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2014022_71_SeaviewTce_SWMP-revC_full · OPW16/0021
From the archive OPW16/0021- Response - Civil Plans. File date in the archive: 2016-05-16 04:05.
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Stormwater!Management(Plan(!
71#Seaview#Terrace,"Sunshine(Beach!
MARKUS'HASLER'!
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Stormwater Management Plan
71 Seaview Terrace, Sunshine Beach
MARKUS HASLER
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Page 2
AquaIntel!Pty!Ltd!
t:!+7!5414!7185!m:!0400!436!391!
e:[email protected]!
w:!www.aquaintel.com.au!
ACN:!153!875!953!!ABN:!83!572!946!845!
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Document!Information!
Stormwater!Management!Plan!!
Report!Title!
71!Seaview!Terrace,!Sunshine!Beach!
Version! Rev!C!
Author(s)! Kelly!McKendry!
Approved!by! KMcK!(RPEQ!09298)!
Signed! !
Date! 6!May!2016!
Doc!No! 2014022TRPTT003!
Distribution! TOD!Consulting!Engineers!
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AquaIntel!Projects:2014022_Seaview_Tce_SWMP:reporting:REVC:2014022_71_SeaviewTce_SWMPT
Document!Path:!
revC.docx!
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[OCR of page images]
Aqualntel Pty Ltd
t: +7 5414 7185 m: 0400 436 391
e: [email protected]
w: www.aquaintel.com.au
ACN: 153 875 953 ABN: 83 572 946 845
Document Information
Stormwater Management Plan
Report Title 71 Seaview Terrace, Sunshine Beach
Version Rev C
Author(s) Kelly McKendry
Approved by
KMcK (RPEQ 09298)
Signed YW
Date 6 May 2016
Doc No 2014022-RPT-003
Distribution TOD Consulting Engineers
Aquaintel Projects:2014022_Seaview_Tce_SWMP:reporting:REVC:2014022_71_SeaviewTce_SWMP-
revC.docx
Page 3
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Executive!Summary!
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AquaIntel! has! been! commissioned! by! TOD! Consulting! Engineers! on! behalf! of! Universal!
Property! Company! Establishment! to! prepare! a! Stormwater! Management! Plan! (SWMP)! to!
support! the! Operational! Works! Approval! for! the! residential! development! at! 71! Seaview!
Terrace,!Sunshine!Beach!(Lot!1!RP197117).!!This!document!supersedes!both!the!original!the!
stormwater! management! plan! (Rev! A)! prepared! by! AquaIntel! (January! 2014)! in! support! of!
the! Material! Change! of! Use! application! and! the! previous! Stormwater! Management! Plan!
(RevB)! submitted! with! the! Operational! Works! application! for! the! site.! ! This! document! is!
prepared! to! address! the! RFI! for! the! Operational! Works! application! and! specifically! Items! 1!
and!3!(Doc!Ref!MLEWIS:OPW16/0021,!issued!5!April!2016).!
!
The!site!is!currently!undeveloped!and!well!vegetated.!!The!site!is!located!adjacent!to!Noosa!
National!Park.!There!is!a!small!external!catchment!draining!through!the!site!from!the!west.!!
The! site! grades! from! the! west! to! the! east! and! currently! runoff! from! the! site! collects! in! a!
drainage!line!near!the!eastern!boundary!of!the!site!and!discharges!to!the!beach.!!!
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It!is!proposed!that!the!residence!be!constructed!with!a!living!‘green’!roof!consisting!of!up!to!
200!mm!of!planted!material!covering!the!shell!like!structure.!!The!roof!will!drain!via!an!under!
surface!drainage!network!and!a!series!of!intercept!drains!to!the!edges!of!the!roof.!!
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Environmental! best! management! practices! are! proposed! for! treatment! of! stormwater!
generated!by!the!site.!Stormwater!will!be!treated!using!a!number!of!treatment!devices!prior!
to!discharge!to!the!receiving!environment.!The!stormwater!treatment!train!for!the!site!will!
consist! of! a! combination! of! areas! treated! within! two! separate! bioretention! basins,! water!
harvesting!and!reuse!on!site,!and!maintenance!of!discharge!from!the!green!roof!into!natural!
gullies.! ! While! it! is! not! proposed! to! direct! all! site! runoff! through! a! formal! water! quality!
treatment!device,!this!report!demonstrates!that!the!Water!Quality!Objectives,!defined!in!the!
SPP,!will!be!met!by!the!overall!treatment!train!proposed!for!the!developed!portion!of!the!site.!
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Non_worsening!of!peak!flows!from!the!site!has!been!demonstrated!through!the!incorporation!
of!a!detention!basin!and!stormwater!tank.!!Runoff!from!the!external!catchment!to!the!west!
of! the! site! will! be! managed! by! diverting! the! existing! drainage! paths! along! the! western!
boundary!and!allowing!flow!to!continue!through!the!area!of!the!site!to!the!north!which!will!
not!be!developed.!Runoff!from!the!driveway!will!be!captured!initially!in!a!detention!basin!(to!
be!co_located!with!a!bioretention!basin)!then!discharge!will!be!returned!to!sheet!flow!prior!to!
entering!natural!drainage!gullies!below!the!development!footprint.!!The!grassed!area!on!the!
southern!side!of!the!proposed!building!and!pool!deck!area!will!be!captured!via!a!bioretention!
basin! for! treatment! (but! limited! detention)! prior! to! exiting! the! site! via! a! piped! outflow! to!
below! RL26! and! a! spreader! at! that! location! to! minimise! the! risk! associated! with! flow!
concentration.!!In!order!to!achieve!non_worsening!of!peak!flows!from!the!site!it!is!necessary!
to!capture!flow!from!the!southern!part!of!the!green!roof!and!pass!them!through!a!detention!
tank.! ! The! detention! tank! (denoted! Stormwater! Tank)! will! discharge! via! the! same! level!
spreader!as!that!which!outlets!the!southern!bioretention!basin.!!To!reduce!concentration!of!
flows! and! to! maintain! the! natural! hydrologic! regime! as! far! as! possible! it! is! proposed! that!
runoff! from! the! Green! roof! (North)! and! Lower! Lawn! (North! and! South)! be! return! to! sheet!
flow! prior! to! exiting! at! the! environmental! line.! ! Runoff! from! the! hard! roof! area! will! be!
directed!to!a!rainwater!tank!for!reuse!on!site,!with!overflows!directed!to!the!stormwater!tank!
that!also!services!the!Green!Roof!(South).!
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This!Stormwater!Management!Plan!demonstrates!that!effective!treatment!of!stormwater!at!
the!proposed!development!can!be!achieved!through!the!application!and!appropriate!design!
of! Water! Sensitive! Urban! Design! (WSUD)! principles! in! accordance! with! legislative!
requirements! and! best! practice! guidelines.! The! treatment! train! proposed! for! the!
development!site!achieves!the!performance!criteria!set!by!the!Noosa!Shire!Council.!!!On!site!
detention! will! ensure! the! non_worsening! criteria! is! achieved! and! downstream! impacts! are!
insignificant.!!A!treatment!train!that!both!detains!and!treats!part!of!the!site!while!allowing!
the! balance! of! the! site! to! be! released! at! the! development! extent! will! act! to! maintain! the!
natural! hydrologic! regime! as! far! as! practical! and! ensure! that! stormwater! runoff! is! balance!
between!the!natural!gullies!within!the!site.!
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Contents!
EXECUTIVE!SUMMARY! I!
1! INTRODUCTION! 1!
1.1! SITE!CHARACTERISTICS! 1!
1.2! PREVIOUS!INVESTIGATIONS! 2!
2! STORMWATER!QUALITY! 5!
2.1! DESIGN!OBJECTIVES! 5!
2.2! STORMWATER!QUALITY!TREATMENT! 5!
2.2.1! STRATEGY! 5!
2.3! MODELLING!APPROACH! 7!
2.3.1! PHILOSOPHY! 7!
2.3.2! MUSIC!SETUP! 7!
2.3.3! CATCHMENT!AREAS! 8!
2.3.4! MUSIC!MODEL!LAYOUT! 9!
2.4! TREATMENT!MEASURES! 10!
2.4.1! RAINWATER!TANKS! 10!
2.4.2! BIORETENTION!SYSTEM! 11!
2.4.3! SEDIMENT!FOREBAYS! 11!
2.5! RESULTS! 13!
3! STORMWATER!QUANTITY! 14!
3.1! SITE!DRAINAGE!AND!CATCHMENT!DEFINITION! 14!
3.2! EXISTING!SCENARIO! 15!
3.3! RATIONAL!METHOD!CALIBRATION! 16!
3.4! DEVELOPED!SCENARIO! 16!
3.5! MITIGATED!SCENARIO! 18!
4! DETAILED!DESIGN!DOCUMENTATION! 22!
5! BIORETENTION!MAINTENANCE!MANUAL! 23!
6! WATER!QUALITY!MONITORING! 24!
6.1! CONSTRUCTION! 24!
6.2! OPERATIONAL! 24!
7! CONCLUSIONS! 25!
8! REFERENCES! 26!
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APPENDICES!
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Appendix!1:!OPW!Drawings! !
Appendix!2:!Rational!Method! !
Appendix!3:!WBNM!results! !
Appendix!4:!Bioretention!Maintenance!Manual! !
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Contents
EXECUTIVE SUMMARY I
1 INTRODUCTION 1
1.1 SITE CHARACTERISTICS 1
1.2 PREVIOUS INVESTIGATIONS 2
2 STORMWATER QUALITY 5
2.1 DESIGN OBJECTIVES 5
2.2 © STORMWATER QUALITY TREATMENT 5
2.2.1 STRATEGY 5
2.3. MODELLING APPROACH 7
2.3.1 PHILOSOPHY 7
2.3.2 MUSIC SETUP 7
2.3.3. CATCHMENT AREAS 8
2.3.4 MUSIC MODEL LAYOUT 9
2.4 TREATMENT MEASURES 10
2.4.1 RAINWATER TANKS 10
2.4.2 BIORETENTION SYSTEM 11
2.4.3. SEDIMENT FOREBAYS 11
2.5 RESULTS 13
3 STORMWATER QUANTITY 14
3.1 SITE DRAINAGE AND CATCHMENT DEFINITION 14
3.2 EXISTING SCENARIO 15
3.3. RATIONAL METHOD CALIBRATION 16
3.4 DEVELOPED SCENARIO 16
3.5 MITIGATED SCENARIO 18
4 DETAILED DESIGN DOCUMENTATION 22
5 BIORETENTION MAINTENANCE MANUAL 23
6 WATER QUALITY MONITORING 24
6.1 CONSTRUCTION 24
6.2 OPERATIONAL 24
7 CONCLUSIONS 25
8 REFERENCES 26
APPENDICES
Appendix 1: OPW Drawings
Appendix 2: Rational Method
Appendix 3: WBNM results
Appendix 4: Bioretention Maintenance Manual
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FIGURES!
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Figure!1:!Locality!Plan! 3!
Figure!2:!Development!Layout! 4!
Figure!3:!Conceptual!Water!Quality!Treatment!Train! 7!
Figure!4:!Model!Layout! 9!
Figure!5:!WSUD!Strategy! 12!
Figure!6:!Catchment!Plan! 20!
Figure!7:!Detention!Strategy! 21!
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TABLES!
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Table!1:!Site!stormwater!quality!objectives!(operational!phase)! 5!
Table!2:!Impervious!Percentage! 8!
Table!3:!Catchment!Areas! 9!
Table!4:!MUSIC!Rainwater!Tank!Parameters! 10!
Table!5:!Bioretention!Basin!Design!Parameters! 11!
Table!6:!MUSIC!Results!–!LoadbBased!Pollutant!Outputs! 13!
Table!7:!!WBNM!SubbCatchment!Fraction!Impervious!Values!–!Existing!Scenario! 15!
Table!8:!!Existing!Scenario!WBNM!Outlet!Peak!Flows! 15!
Table!9:!Rational!Method!Calibration!Summary!(Total!Catchment)! 16!
Table!10:!Rational!Method!Peak!Flows!Versus!WBNM!Peak!Flows! 16!
Table!11:!!WBNM!SubbCatchment!Fraction!Impervious!Values!–!Developed!Scenario! 17!
Table!12:!!Developed!Scenario!WBNM!Outlet!Peak!Flows!–!Outlet!1! 17!
Table!13:!!Developed!Scenario!WBNM!Outlet!Peak!Flows!–!Outlet!2! 18!
Table!14:!Storage!and!Outlet!Details!of!Detention!System! 18!
Table!15:!!Comparison!of!WBNM!Outlet!Peak!Flows!–!Outlet!1! 19!
Table!16:!!Comparison!of!WBNM!Outlet!Peak!Flows!–!Outlet!2! 19!
Table!17:!!Level!Spreader!Calculations! 22!
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FIGURES
Figure 1: Locality Plan
Figure 2: Development Layout
Figure 3: Conceptual Water Quality Treatment Train
Figure 4: Model Layout
Figure 5: WSUD Strategy
Figure 6: Catchment Plan
Figure 7: Detention Strategy
TABLES
Table 1: Site stormwater quality objectives (operational phase)
Table 2: Impervious Percentage
Table 3: Catchment Areas
Table 4: MUSIC Rainwater Tank Parameters
Table 5: Bioretention Basin Design Parameters
Table 6: MUSIC Results — Load-Based Pollutant Outputs
Table 7: WBNM Sub-Catchment Fraction Impervious Values — Existing Scenario
Table 8: Existing Scenario WBNM Outlet Peak Flows
Table 9: Rational Method Calibration Summary (Total Catchment)
Table 10: Rational Method Peak Flows Versus WBNM Peak Flows
Table 11: WBNM Sub-Catchment Fraction Impervious Values — Developed Scenario
Table 12: Developed Scenario WBNM Outlet Peak Flows — Outlet 1
Table 13: Developed Scenario WBNM Outlet Peak Flows — Outlet 2
Table 14: Storage and Outlet Details of Detention System
Table 15: Comparison of WBNM Outlet Peak Flows — Outlet 1
Table 16: Comparison of WBNM Outlet Peak Flows — Outlet 2
Table 17: Level Spreader Calculations
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1 Introduction!
AquaIntel! has! been! commissioned! by! TOD! Consulting! Engineers! on! behalf! of!
Universal! Property! Company! Establishment! to! update! a! previously! prepared!
Stormwater! Management! Plan! (SWMP)! to! support! the! Operational! Works!
application!for!the!residential!development!at!71!Seaview!Terrace,!Sunshine!Beach!
(Lot! 1! RP197117).! ! This! document! supersedes! the! Stormwater! Management! Plan!
(SWMP)!prepared!by!AquaIntel!(2014)!in!support!of!the!MCU!application!for!the!site.!!
This!document!(RevC)!is!also!an!update!to!address!the!issues!raised!in!the!RFI!for!the!
Operational!Works!application!issued!on!the!5!April!2016.!
The!development!will!be!required!to!comply!with!the!Division!20!–!Water!Sensitive!
Urban!Design!Code!of!the!Noosa!Shire!Council’s!(NSC)!“The!Noosa!Plan”.!!From!this,!
the! load! based! Water! Quality! Objectives! (WQO’s)! stipulated! in! the! State! Planning!
Policy!July!2014!for!the!South!East!Queensland!region!will!be!adopted!for!the!site.!!In!
addition! the! development! has! received! development! conditions! based! on! the!
Material!Change!of!Use!planning!application!for!the!site.!!
The!purpose!of!this!SWMP!is!to!identify!the!stormwater!quality,!detention!and!water!
reTuse!options!that!could!be!implemented!within!the!site!to!achieve!elements!of!the!
code! and! address! Development! Conditions! 28a! and! 28b.! ! This! revision! (RevC)! also!
looks! to! address! items! 1! and! 3! of! the! RFI! issued! with! respect! to! the! Operational!
Works!application!on!the!5!April!2016.!!The!objectives!of!this!SWMP!are!to:!!
• Ensure!the!proposed!development!maintains!or!improves!the!environmental!
values!of!the!receiving!waters!within!the!receiving!catchment!throughout!the!
operational!phase;!!
• Consider! suitable! Stormwater! Quality! Improvement! Devices! (SQID’s)! based!
on!Water!Sensitive!Urban!Design!(WSUD)!principles;!
• Recommend!an!appropriate!stormwater!treatment!strategy!for!the!proposed!
development! that! complies! with! Noosa! Shire! Council! (NSC)! water! quality!
objectives;!!
• Ensure! the! development! achieves! nonTworsening! of! stormwater! flows!
downstream!of!the!site;!
• Show!compliance!with!the!MCU!approval!conditions!(Specifically!No.!28);!and!
• Address!Items!1!and!3!of!the!RFI!issued!by!NSC!on!the!5!April!2016.!
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1.1 Site!Characteristics!
The! location! of! the! site! is! shown! in! Figure! 1.! ! ! The! total! site! area! is! approximately!
9,942m2.!The!site!is!currently!well!vegetated!with!no!structures!or!buildings!on!the!
site.!The!site!is!adjacent!to!Noosa!National!Park!to!the!north,!two!residential!lots!to!
the!west,!a!single!residential!lot!to!the!south!and!Sunshine!Beach!to!the!east.!
The!site!grades!from!the!west!to!the!east,!with!elevations!ranging!from!51!m!AHD!to!
7! m! AHD,! and! discharges! to! the! beach.! ! There! is! a! 2856! m2! of! external! catchment!
located!along!the!western!boundary!(existing!residential!lots!on!McAnally!Drive).!!
The! site! is! located! on! the! frontal! beach! dunes! and! the! area! of! proposed!
development!is!not!influenced!by!regional!or!local!flooding!or!storm!tide.!!!
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Page 8
! It!is!proposed!that!a!single!residential!building!be!constructed!on!approximately!one! third!of!the!site!and!it!is!to!consist!of!a!collection!of!curved!shell!like!structures!with! living!‘green’!roofs.!The!development!layout!is!provided!in!Figure!2.! ! 1.2 Previous!Investigations! A! SWMP! was! completed! for! a! previously! proposed! building! on! the! site! by! JFP! in! October! 2009.! ! The! proposed! building! has! been! altered! significantly! in! the! current! design.! In! 2014! AquaIntel! prepared! a! SWMP! for! submission! with! the! MCU! application! for! the!current!development!layout.!!AquaIntel!then!modified!the!SWMP!to!reflect!the! detailed! design! for! the! development! and! for! submission! of! the! Operational! Works! application! in! January! 2016.! This! document! supersedes! the! previous! SWMPs! by! AquaIntel.! ! ! ! ! ! ! ! ! 2!
Page 9
LEGEND) Data)Source)Notes:)
#
Project:))71#Seaview#Terrace#Stormwater#
#
#Management#Plan)
#Site#Locality#
)#
# ##
Figure)1))Locality)Plan)
# ##
#
# ##
#
# ##
#
# ##
Date:)20/09/14 # ##
Drawn)by:)KM#
[OCR of page images]
SCY ry
ete Oe
Data Source Notes:
nmeAn ay
Inve
Project: 71 Seaview Terrace Stormwater
Management Plan
LEGEND
Ty Site Locality
Figure 1 Locality Plan
a”
Date: 20/09/14
Drawn by: KM aqua
Page 10
LEGEND) Data)Source)Notes:) Project:))71#Seaview#Terrace#Stormwater#Management#Plan#
# Proposed#development#layout#provided#by#TOD#
ConsulDng#for#use#in#this#invesDgaDon.# #
# ## # #
# ## ) )Figure)2))Development)Layout#
# ## #
# ## Date:)29/01/16 # ##
# ## Drawn)by:)KM#
[OCR of page images]
Sa
<i
LEGEND
Data Source Notes:
Proposed development layout provided by TOD
Consulting for use in this investigation.
Project: 71 Seaview Terrace Stormwater Management Plan
Date: 29/01/16
Drawn by: KM
Figure 2 Development Layout nr~
aquaintel
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2 Stormwater!Quality!
2.1 Design!Objectives!
This! report! identifies! the! stormwater! quality! management! objectives! for! the!
operational! phase! (postTconstruction! phase)! of! the! proposed! development.!!
Construction! based! stormwater! quality! management! objectives! will! need! to! be!
addressed!as!part!of!operational!works!documentation.!
Water! quality! objectives! or! performance! criteria! for! the! proposed! urban!
development!in!this!location!are!those!stipulated!in!the!State!Planning!Policy!–!July!
2014! for! the! South! East! Queensland! region.! ! The! applicable! water! quality! design!
objectives!for!this!location!are!shown!in!Table!1!below.!!!
However,!the!applicability!of!these!objectives!for!this!development!are!questionable.!!
The!SPP!states!that!“the!making!a!material!change!of!use!or!carrying!out!operational!
work!for!the!purposes!of,!or!associated!with,!a!single!detached!dwelling”!is!outside!
the! scope! of! the! policy.! ! However,! the! policy! does! apply! where! a! MCU! or! ROL! for!
urban!purposes!includes!a!land!area!greater!than!2500!m2.!!In!order!to!demonstrate!
a!high!level!of!protection!of!the!environmental!values!of!the!receiving!waters!within!
the!receiving!catchment!the!water!quality!objectives!provided!in!Table!1!are!adopted!
for!use!in!this!investigation.!
Table!1:!Site!stormwater!quality!objectives!(operational!phase)!
Minimum!reductions!in!mean!annual!loads!from!unmitigated!development!(%)!
Total!Suspended! Total! Total!Nitrogen!! Gross!pollutants!!
Solids!(TSS)! Phosphorous!(TP)! (TN)! >5!mm!
80! 60! 45! 90!
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2.2 Stormwater!Quality!Treatment!
2.2.1 Strategy!
The!proposed!development!is!unique!with!respect!to!water!quality!as!the!majority!of!
the! structure! is! proposed! to! be! covered! in! a! living! ‘green’! roof.! ! Detail! of! the!
proposed!living!’green’!roof!is!contained!within!the!site!landscape!plan!(James!Birrell!
Design! Lab,! 2015).! ! The! green! roof! is! proposed! to! consist! of! cells! of! planted! soil!
media!of!a!total!depth!of!200!mm.!!These!cells!will!be!drained!via!an!under!drainage!
network! and! gravel! drainage! channels! to! the! edges! of! the! structure! prior! to!
discharge!from!the!roof.!
While!the!living!‘green’!roof!will!in!effect!act!to!reduce!impervious!area!and!provide!
a!level!of!water!quality!treatment,!for!the!purpose!of!quantification!of!stormwater!
quality! the! roof! area! has! been! included! in! the! quality! treatment! strategy! as!
catchment!area!and!not!as!a!treatment!device.!!
The!treatment!train!for!the!proposed!development!has!been!reviewed!based!on!the!
RFI!Items!1!and!3!and!is!shown!in!Figure!3.!!The!objective!of!the!treatment!train!is!to!
! ! ! 5!
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! treat!runoff!from!the!site!to!a!quality!which!achieves!the!objectives!of!the!SPP!but! which!will!also!maintain!the!natural!hydrological!regime!as!far!as!is!practical.!!! The!external!catchment!will!not!contribute!runoff!to!any!bioretention!or!detention! system!on!site!and!will!be!diverted!around!the!site!to!the!north.!!The!driveway!will! be! directed! to! a! bioretention! basin! of! 5m2,! to! be! coTlocated! with! the! detention! basin,! at! the! northern! end! of! the! driveway.! ! Discharge! from! this! basin! will! be! returned!to!sheet!flow!prior!to!being!discharged!to!natural!areas!within!the!site!but! below!the!development!footprint.!!The!grassed!area!only!the!southern!boundary!of! the!site!and!the!pool!deck!and!lawn!are!to!be!collected!and!treated!in!a!bioretention! basin!of!12m2!surface!area,!outleting!into!the!receiving!environment!via!a!pipe!and! level! spreader! at! a! location! on! site! below! the! elevation! stipulated! by! the! development! MCU! approval! conditions.! ! The! hard! surface! roof! will! be! collected! within!a!25!kL!tank!and!reused!on!the!site!at!an!assumed!rate!of!500!L/day.!!Green! Roof!(North!and!South)!and!the!lawn!areas!below!the!building!are!not!proposed!to! be!treated!but!instead!the!runoff!from!the!green!roof!is!to!be!spread!and!returned!to! sheet!flow!prior!to!reaching!the!natural!vegetation.!!While!it!is!proposed!that!part!of! the!site!will!not!pass!directly!through!a!water!quality!improvement!device!it!will!be! demonstrated! that! this! overall! treatment! train! is! sufficient! to! meet! the! entire! treatment!needs!of!the!site.! During! the! detailed! building! design! FLOTH! Sustainable! Building! Consultants! have! undertaken! the! hydraulic! design! of! the! internal! stormwater! management! infrastructure.! ! The! internal! hydraulic! design! has! been! modified! from! that! initially! proposed!with!the!OPW!application!in!order!to!address!the!issues!raised!in!the!RFI! (April!2016).!!As!noted!above!it!is!proposed!that!runoff!from!the!‘hard’!roof!area!be! collected!within!a!‘Rainwater!Tank’!and!will!now!be!used!for!limited!internal!use!and! external! water! demands.! ! Water! will! no! longer! be! harvested! from! the! green! roof! areas!for!reuse!on!the!site!and!instead!will!be!either!discharged!to!the!lawn!areas!in! order!to!return!flows!to!sheet!flow!prior!to!entering!existing!drainage!paths!or!will! be!collected!in!a!detention!tank!in!order!to!mitigate!any!increases!in!peak!flows!from! the! site.! ! Discharges! from! the! site! will,! as! far! as! practical,! be! directed! to! the! predevelopment!drainage!paths!below!the!proposed!development!footprint.! ! ! ! ! ! 6!
Page 13
!
!
Figure!3:!Conceptual!Water!Quality!Treatment!Train!
2.3 Modelling!Approach!
2.3.1 Philosophy!
As! discussed! above! a! conservative! approach! to! the! quantification! of! water! quality!
load! generation! and! treatment! as! a! result! of! the! proposed! living! ‘green’! roof! has!
been!adopted!for!this!investigation.!!The!areas!of!‘green’!roof!have!been!included!in!
the! MUSIC! model! as! forest! source! nodes! and! not! as! treatment! devices.! ! It! is!
proposed!that!the!roof!areas!be!planted!with!native!endemic!species!and!thus!will!
reflect! the! surrounding! forest! areas! rather! than! an! urban! garden.! The! ‘green’! roof!
areas! will,! in! fact,! provide! a! certain! level! of! water! quality! treatment! similar! to! a!
bioretention!garden;!however,!this!has!not!been!included!in!the!modelling.!!
Hydraulic! design! and! site! water! reuse! estimates! have! been! modified! from! the!
original! OPW! application.! ! The! currently! proposed! treatment! train! aims! to! address!
items!raised!in!the!NSC!RFI!(5!April!2016).!!The!proposed!treatment!train!differs!from!
both! the! previous! OPW! application! and! the! proposal! presented! in! the! superseded!
SWMP!(AquaIntel,!2014).!!As!such!the!MUSIC!model!has!been!amended.!!
In!order!to!quantify!load!reductions!a!base!case!(unmitigated)!assuming!the!building!
has!the!green!roof!areas!is!compared!to!mitigated!scenarios!including!the!inclusion!
of!reuse!estimates!and!treatment!devices.!!
2.3.2 MUSIC!Setup!
An! assessment! of! stormwater! runoff! quality! from! the! proposed! development! site!
has! been! conducted! using! the! Cooperative! Research! Centre! for! Catchment!
Hydrology’s! (CRCCH)! Model! for! Urban! Stormwater! Improvement! Conceptualisation!
(MUSIC).! MUSIC! is! a! decision! support! tool,! used! to! plan! and! design! appropriate!
! ! ! 7!
Page 14
!
urban! stormwater! management! systems! at! the! conceptual! level.! ! MUSIC! Version!
6.1.0,!released!in!2015,!was!used!in!this!assessment.!
Climate!data!for!the!catchment!was!sourced!from!the!MUSIC!model!database.!!The!
rainfall! and! evaporation! data! template! for! this! site! has! been! based! on! data! from!
Cooroy!from!1/1/1973T!31/12/1983!with!six!(6)!minute!rainfall!duration.!
The!“MUSIC!Modeling!Guidelines”!(Water!By!Design,!2010)!was!used!as!the!basis!for!
constructing! the! MUSIC! model.! ! The! default! parameters! of! the! MUSIC! model! were!
used!in!representing!the!treatment!nodes!(where!applicable).!!
Source! node! parameters! for! urban! residential! (roof,! road! and! ground! level)! and!
forest!from!the!“MUSIC!Modeling!Guidelines”!(Water!By!Design,!2010)!were!used!in!
the!MUSIC!model.!
The! following! scenarios! were! modelled! in! order! to! assess! the! performance! of! the!
proposed!development!and!treatment!devices:!
1. Base! Case! –! developed! case! with! the! inclusion! of! the! building! with! a!
conventional!impervious!roof;!
2. Green! Roof! –! the! inclusion! of! the! roofed! areas! as! forest! source! nodes,! no!
additional!treatment;!and!
3. Mitigated! –! the! inclusion! of! the! green! roof! and! additional! water! quality!
treatment!devices,!namely!bioretention!gardens.!
The!fraction!impervious!value!applied!for!each!of!the!source!nodes!in!the!scenarios!
outlined!above!are!detailed!in!Table!2.!
!
Table!2:!Impervious!Percentage!
Source!Node! Base!Case! Green!Roof! Mitigated!
Driveway! 100%! 100%! 100%!
Deck!areas!(excluding!pool!
100%! 100%! 100%!
surface)!
Roof! 100%! 0%! 0%!
Garden/lawn! 0%! 0%! 0%!
!
2.3.3 Catchment!Areas!
For!the!purposes!of!water!quality!modelling!the!development!site!has!been!split!into!
catchments! that! report! to! the! various! water! quality! treatment! devices.! Each!
catchment! is! then! divided! into! roofed,! paved,! road! and! grassed! areas.! ! Significant!
areas!of!the!site!remain!undeveloped!and!have!been!included!in!the!MUSIC!model!as!
forested,! however,! results! are! reported! upstream! of! these! areas.! Table! 3! outlines!
the!catchment!areas!represented!within!the!MUSIC!model.!The!stormwater!quality!
catchments!are!provided!in!Figure! 5.!External!catchments!have!not!been!modelled!
as!they!do!not!contribute!to!the!water!quality!improvement!devices.!
!
!
! ! ! 8!
Page 15
!
!
Table!3:!Catchment!Areas!
Drive! Roof! Deck! Grassed! Forest!
Total!
Catchment!
(ha)! (ha)! (ha)! (ha)! (ha)#!
(ha)!
External! ! ! ! ! 0.286!
0.286!
D1c! ! ! ! ! 0.155!
0.155!
Driveway! 0.026! ! ! ! ! 0.026!
Green_Roof! ! 0.067! ! ! ! 0.067!
Lower_A! ! ! ! 0.024! ! 0.024!
Lower_B! ! ! 0.02736! 0.02964! ! 0.057!
Roof! ! 0.022! ! ! ! 0.022!
D2b! ! ! ! ! 0.221! 0.221!
C3! ! ! ! ! 0.317! 0.317!
! ! ! ! ! 0.286! 0.286!
#!Forest!sources!nodes!for!the!undeveloped!portion!of!the!site!have!been!included!in!
the!MUSIC!model!however!results!are!reported!at!the!outlet!of!the!developed!areas.!!
2.3.4 MUSIC!Model!Layout!
As! the! management! of! urban! stormwater! needs! to! take! a! holistic! approach,! a!
number! of! management! measures! need! to! be! implemented! in! series! to! form! a!
treatment!train.!The!correct!utilisation!of!various!devices!within!the!treatment!train!
is! imperative! to! target! the! desired! pollutants,! from! the! gross! solids! to! the! fine!
particles.!!Figure! 4!shows!the!MUSIC!model!layout!for!the!development!(Mitigated!
Scenario).!
!
Figure!4:!Model!Layout!
!
! ! ! 9!
Page 16
!
!
2.4 Treatment!Measures!
Runoff! from! the! development! will! be! treated! via! two! bioretention! basins.! ! The!
location! of! the! basins! is! shown! in! Figure! 5.! ! The! area! of! concrete! roof! will! also! be!
captured!in!a!rainwater!tank!for!reuse!within!the!development.!
2.4.1 Rainwater!Tanks!
!
!
Through! appropriate! design! of! rainwater! tanks! it! has! been! found! that! significant!
reductions!in!runToff!can!be!achieved.!!Rainwater!tanks!not!only!provide!temporary!
detention!of!stormwater!runToff,!but!also!provide!a!significant!alternative!for!water!
supply!uses.!!Collected!roof!water!is!suitable!for!garden!irrigation!or!toilet!flushing!
with!no!additional!treatment.!!!
An! additional! benefit! to! rainwater! tanks! is! that! the! detention! of! stormwater! flows!
can! alter! the! pollutant! transportation! characteristics! of! a! catchment.! ! Rainwater!
tanks! can! be! incorporated! into! building! design! so! that! they! do! not! impact! on! the!
aesthetics!of!an!urban!development.!!!
The!modified!OPW!treatment!train!proposes!one!tank!to!be!utilised!for!stormwater!
treatment! (the! Rainwater! Tank).! ! A! second! tank! (Stormwater! Tank)! will! be! utilised!
for!detention!purposes!only!and!does!not!form!part!of!the!water!quality!treatment!
train.!!The!size!and!outlet!pipework!included!in!the!MUSIC!model!as!shown!in!Table!
4.!!As!the!proposed!reuse!from!the!tank!is!now!to!be!limited!to!nonTpotable!internal!
use!and!external!use!there!is!no!additional!treatment!of!the!water!proposed!prior!to!
use.!!!
Estimates!of!reuse!have!been!reduced!to!500!L/d!which!is!considered!reasonable!for!
the!size!and!scale!of!the!proposed!development!and!are!modelled!as!noted!Table!4.!
Table!4:!MUSIC!Rainwater!Tank!Parameters!
Rainwater!
Parameter!
Tank!
Tank!Volume!(kL)! 25!
2
Surface!Area!(m )! 12.5!
Equivalent!Overflow!Pipe!(mm)! 212!
Constant!Daily!Outflow!to!Reuse!
0.5!
(kL/d)!#!
#!ReTuse!estimates!applied!as!a!constant!daily!demand.!
! ! ! 10!
Page 17
!
!
!
2.4.2 Bioretention!System!
!
!
Bioretention! systems! use! ponding! above! a! treatment! surface! to! maximise! the!
volume! of! runoff! flowing! through! the! filtration! media.! They! typically! convey! flows!
above! the! design! event! through! overflow! pits.! ! The! treatment! system! operates! by!
firstly!filtering!surface!flows!through!surface!vegetation!and!then!percolating!runoff!
through! prescribed! filtration! media.! ! This! media! provides! treatment! through! fine!
filtration,!extended!detention!and!biological!uptake!of!nutrients.!!!
As! these! systems! take! approximately! 12T24! h! to! drain,! the! maximum! depth! of!
ponding! allowed! to! occur! over! the! filter! area! has! been! limited! to! 300! mm.! ! The!
depth! of! the! filter! media! has! been! limited! to! 400! mm.! ! Table! 5! summarises! the!
proposed! design! parameters! for! the! bioretention! basin! for! this! development.!!
Indicative!bioretention!locations!are!highlighted!in!Figure!5.!
!
Table!5:!Bioretention!Basin!Design!Parameters!
Parameter! Bio1! Bio2!
Extended!Detention!Depth!(m)! 0.3! 0.3!
2
Storage!Surface!Area!(m )! 5! 12!
2
Filter!Media!Area!(m )! 5! 12!
Unlined!Filter!Media!Perimeter!(m)! 0.01! 0.01!
Saturated!Hydraulic!Conductivity!
200! 200!
(mm/hr)!
Filter!Depth!(m)! 0.4! 0.4!
TN!Content!of!Filter!Media!(mg/kg)! 800! 800!
Orthophosphate!Content!of!Filter!
55! 55!
Media!(mg/kg)!
Exfiltration!Rate!(mm/hr)! 0.0! 0.0!
Overflow!Weir!Length!(m)! 5.0! 5.0!
2.4.3 Sediment!Forebays!
Due!to!the!size!(<2ha)!and!nature!of!the!development!it!is!sediment!forebays!are!not!
required.! Bioretention! areas! should! be! monitored! to! ensure! that! the! deposition! of!
coarse!sediment!on!the!filter!media!surface!does!not!affect!the!bioretention!system!
function.!!
!
! ! ! 11!
Page 18
LEGEND) Data)Source)Notes:) Project:))!71!Seaview!Terrace!Stormwater!Management!Plan!
! !! Proposed!development!layout!provided!by!TOD!
ConsulDng!for!use!in!this!invesDgaDon.! !
!!!!!!!!!!!!!!!!!Roof!Area
! !! ! !BioretenDon! ! !
! ! !! )Figure)5)WSUD)Strategy!
!
!Paved!Areas
!! ! !Site!Catchment! !
! ! !! Date:)4/05/16 !!
!
!Grassed!Areas
!! ! !External!Catchment! Drawn)by:)KM!
! !!
! !!
! !!
! !!
[OCR of page images]
LEGEND Data Source Notes:
Proposed development layout provided by TOD
Roof Area || Bioretention Consulting for use in this investigation.
Figure 5 WSUD Strategy
Paved Areas [] Site Catchment
Date: 4/05/16
Grassed Areas External Catchment Drawn by: KM
Project: 71 Seaview Terrace Stormwater Management Plan
Page 19
!
2.5 Results!
MUSIC! modelling! of! the! proposed! treatment! train! for! the! residence! at! 71! Seaview!
Terrace! at! Sunshine! Beach,! was! performed! to! ensure! the! identified! load! based!
Water! Quality! Objectives! were! achieved.! ! Table! 6! presents! the! loadTbased! outputs!
generated! by! the! development.! Unmitigated! loads! are! reported! based! on! the!
assumption! that! the! proposed! residence! has! a! green! type! roof.! ! Mitigated! loads!
include!the!bioretention!gardens,!stormwater!tank!and!reuse.!
!
Table!6:!MUSIC!Results!–!LoadbBased!Pollutant!Outputs!
Reduction!
Target!
Pollutant! Unmitigated!! Mitigated!! Achieved!!!!! Compliance!
Reduction!
(%)!
Flow! 1.74! 1.55! 10.9! T! b!
TSS! 318! 62.5! 80.4! 80%! !!
TP! 0.598! 0.212! 64.5! 60%! !!
TN! 3.16! 1.55! 50.8! 45%! !!
GP! 29.6! 0! 100! 90%! !!
!
!
!
! !
! ! ! 13!
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!
3 Stormwater!Quantity!
The!objective!of!this!component!of!the!study!is!to!investigate!the!potential!impact!
that! the! proposed! development! will! have! on! peak! flows! discharging! from! the! site.!!
Where! any! increases! of! peak! flows! are! found,! potential! mitigation! options! will! be!
investigated!in!the!form!of!a!detention!system.!!!
Hydrologic!modelling!of!the!catchment!has!been!carried!out!using!WBNM!software!
developed! jointly! by! the! University! of! Wollongong,! Rienco! Consulting! and! Balance!
R&D.! ! The! 2012! version! has! been! used! for! this! investigation.! ! A! peak! flow! rational!
method!calibration!has!also!been!carried!out.!
Modelling! has! been! carried! out! for! the! 2,! 5,! 10,! 20,! 50! and! 100! year! ARI! storm!
events.!!The!following!scenarios!have!been!investigated:!
1. Existing!Scenario!
2. Developed!Scenario!–!conventional!roof!(100!%!impervious)!
3. Mitigated!Scenario!
A! conventional! impervious! roof! type! was! modelled! in! order! to! conservatively!
quantify! the! likely! impact! the! ‘green’! roof! may! have! on! peak! flow! generated! from!
the!site.!!It!is!recognized!that!while!the!roof!will!be!covered!with!up!to!200!mm!of!
planted!media!it!will!not!act!entirely!as!a!catchment!with!0%!impervious!fraction.!!In!
reality,! the! peak! flows! generated! from! the! green! roof! will! likely! fall! between! a!
partially!impervious!catchment!and!a!fully!impervious!catchment.!!!
3.1 Site!Drainage!and!Catchment!Definition!
The! site! is! relatively! steep! with! runoff! flowing! in! a! north! easterly! direction!
predominately!as!sheet!flow!with!limited!channel!delineation.!As!noted!above!there!
is! an! external! catchment! to! the! west,! consisting! of! two! existing! residential!
allotments!on!McAnally!Drive,!which!currently!drains!through!the!site.!!!
There!is!an!existing!gully!and!drainage!line!located!to!the!north!of!the!site!boundary!
which!conveys!stormwater!from!the!outlet!at!the!turnaround!on!McAnally!Drive,!the!
national! park! and! likely! receives! flow! from! the! subject! site.! ! The! drainage! line!
appears!to!cross!the!site!at!the!northeastern!corner.!!
For!the!purposes!of!this!investigation!it!is!assumed!that!all!site!runoff!flows!across!
the! northern! boundary! and! for! calculation! of! nonTworsening! peak! flows! will! be!
measured!at!the!outlet!of!the!site!subTcatchment!at!the!boundary.!
SubTcatchments! delineated! for! the! WBNM! model! have! been! based! on! detailed!
survey!and!existing!contour!details!provided!for!the!site.!!The!WBNM!subTcatchment!
layout!is!shown!in!Figure!6.!!The!WBNM!model!has!been!split!into!4!subTcatchments!
in! order! to! represent! the! site.! The! external! catchment! to! the! west! of! the! site! has!
been!included!in!the!model!as!runoff!from!the!area!would!be!directed!through!the!
site!but!not!flow!into!the!proposed!developed!area.!A!small!portion!of!the!site!at!the!
north!western!corner,!which!is!proposed!not!to!be!developed,!flows!off!site!to!the!
north!and!has!not!been!included!in!modeling.!
! ! ! 14!
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!
3.2 Existing!Scenario!
SubTcatchment! fraction! impervious! values! have! been! calculated! based! on! aerial!
imagery! data.! ! The! existing! scenario! subTcatchment! areas! and! fraction! impervious!
values!for!each!subTcatchment!are!tabulated!below!in!Table!7.!
!
Table!7:!!WBNM!SubbCatchment!Fraction!Impervious!Values!–!Existing!Scenario!
Existing!Scenario!!
WBNM!SubbCatchment! Area!(ha)!
Impervious!(%)!
External! 0.2856! 75!
C1! 0.2265! 0!
C2! 0.3490! 0!
C3! 0.3173! 0!
TOTAL! 1.1784! !
!
The!WBNM!model!has!been!calibrated!to!Rational!Method!derived!peak!flows!at!the!
catchment!outlet.!!Details!of!the!Rational!Method!calibration!are!provided!in!Section!
3.3.!
The! WBNM! model! has! been! calibrated! by! adjusting! the! WBNM! catchment! lag!
parameter.!!The!value!of!the!catchment!lag!parameter!adopted!for!the!investigation!
is!1.49,!which!is!within!the!accepted!range!of!values!provided!in!the!WBNM!technical!
reference!manual.!The!rainfall!loss!rates!adopted!for!this!investigation!are!initial!and!
continuing!losses!of!0!mm!and!2.5!mm!for!pervious!areas,!and!0!mm!and!0!mm!for!
impervious!areas,!respectively.!
WBNM!modelling!has!been!carried!out!for!the!range!of!standard!design!ARI!events!
ranging!from!2!year!up!to!100!years.!!Modelling!has!also!been!carried!out!for!the!full!
range! of! standard! design! event! storm! durations! ranging! from! 15! minutes! up! to! 3!
hours.!!Peak!flows!tabulated!in!this!report!represent!the!peak!values!extracted!from!
this!range!of!storm!events.!!
Table!8:!!Existing!Scenario!WBNM!Outlet!Peak!Flows!
2yr!ARI! 5yr!ARI! 10yr!ARI! 20yr!ARI! 50yr!ARI! 100yr!ARI!
Catchment! (m3/s)!
(m3/s)! (m3/s)! (m3/s)! (m3/s)! (m3/s)!
External! 0.124! 0.153! 0.17! 0.193! 0.201! 0.222!
C1! 0.188! 0.24! 0.27! 0.311! 0.329! 0.365!
C2! 0.111! 0.147! 0.167! 0.195! 0.208! 0.233!
C3! 0.102! 0.135! 0.154! 0.18! 0.191! 0.214!
Outlet! 0.298! 0.387! 0.437! 0.506! 0.536! 0.598!
!
! ! ! 15!
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!
3.3 Rational!Method!Calibration!
The! existing! scenario! WBNM! model! has! been! calibrated! to! the! Rational! Method!
derived!peak!flows!at!the!outlet!of!the!catchment!draining!to!northern!boundary!of!
the!site!(WBNM!catchment!node!‘Outlet’).!!The!adopted!calibration!parameters!are!
detailed!in!the!Section!3.1.!
A!summary!of!the!Rational!Method!calculation!input!parameters!is!provided!below!
in!Table!9!and!additional!details!of!the!Rational!Method!calculation!are!provided!in!
Appendix!1!of!this!report.!
Table!9:!Rational!Method!Calibration!Summary!(Total!Catchment)!
Parameter! Value!
Time!of!Concentration!(tc)! 6!min!
Catchment!Area! 1.1784!ha!
C10!Value! 0.48!
100!year!Rainfall!Intensity! 302.7!mm/hr!
!
A! comparison! of! peak! Rational! Method! flow! rates! compared! with! peak! WBNM!
model!flow!rates!are!provided!in!Table!10!below.!
Table!10:!Rational!Method!Peak!Flows!Versus!WBNM!Peak!Flows!!
2yr!ARI! 5yr!ARI! 10yr!ARI! 20yr!ARI! 50yr!ARI! 100yr!ARI!
Catchment! (m3/s)!
(m3/s)! (m3/s)! (m3/s)! (m3/s)! (m3/s)!
Rational! 0.24! 0.3! 0.33! 0.42! 0.54! 0.62!
WBNM! 0.298! 0.387! 0.437! 0.506! 0.536! 0.598!
%!Difference! 19%! 22%! 24%! 17%! T1%! T4%!
!
The!above!results!show!that!a!reasonable!peak!flow!calibration!has!been!achieved,!
particularly!for!the!larger!events!of!the!WBNM!model!when!compared!to!a!Rational!
Method! calculation.! ! The! WBNM! model! estimates! slightly! lower! peak! flows! in! the!
smaller! events,! however,! this! would! be! considered! acceptable! in! assessing! nonT
worsening!of!flows.!
3.4 Developed!Scenario!
The! proposed! development! has! been! incorporated! into! the! WBNM! model! by!
adjusting! the! site! subTcatchments! and! the! fraction! impervious! values.! ! Fraction!
impervious! values! of! the! existing! and! proposed! scenarios! are! provided! in! Table! 11!
below.!!The!modelled!development!case!adopts!conventional!impervious!fractions!as!
a! conservative! estimate.! The! developed! scenario! WBNM! model! layout! is! shown! in!
Figure!6!of!this!report.!!!
The! developed! catchments! have! been! modified! to! reflect! the! altered! water!
management! strategy! for! the! site.! ! This! modification! was! undertaken! in! order! to!
address! Items! 1! and! 3! of! the! OPW! RFI! (NSC! 5! April! 2016)! and! differs! from! that!
proposed! in! the! original! OPW! application! (AquaIntel,! RevB,! January! 2016).! ! The!
! ! ! 16!
Page 23
!
existing!case!natural!catchment!divide!was!determined!to!fall!approximately!through!
the! centre! of! the! proposed! building! (Figure! 6).! ! As! such! and! in! order! to! maintain!
outlet! of! stormwater! runoff! into! the! predevelopment! drainage! pathways! it! is!
proposed! that! the! development! outlet! stormwater! runoff! into,! as! far! as! practical,!
the!same!drainage!pathways!as!the!predevelopment!case.!!!
!
Table!11:!!WBNM!SubbCatchment!Fraction!Impervious!Values!–!Developed!Scenario!
Developed!Scenario!
Existing!Scenario!
WBNM!SubbCatchment! Area!(ha)! b!Conventional!
Impervious!(%)!
Impervious!(%)!
External! 0.288! 75! 75!
D1c! 0.155! 0! 0!
D1a_Driveway! 0.026! 100! 0!
Green_Roof_North! 0.016! 100#! 0!
Green_Roof_South! 0.048! 100 ! # 0!
Lower_A_North! 0.009! 0! 0!
Lower_A_South! 0.015! 0! 0!
Lower_B! 0.057! 48! 0!
Roof! 0.022! 100! 0!
C3! 0.317! 0! 0!
Total! 1.175! ! !
#!It!is!noted!that!while!this!area!is!proposed!to!be!green!roof!it!is!modelled!for!the!
purposes! of! analysis! of! potential! increase! in! peak! flow! from! the! development! as!
100%!impervious.!
Peak! flows! tabulated! in! this! report! represent! the! peak! values! extracted! from! the!
modelled!range!of!storm!events.!!
Table!12:!!Developed!Scenario!WBNM!Outlet!Peak!Flows!–!Outlet!1!
Developed!
Existing!Peak! Change!in!Peak! %!increase!in!Peak!
!! Flow!(m3/s)!
Conventional!Peak!
Flow!(m3/s)! Flow!
Flow!(m3/s)!
2!year! 0.19! 0.19! 0.00! 0%!
5!year! 0.24! 0.25! 0.01! 1%!
10!year! 0.27! 0.28! 0.01! 1%!
20!year! 0.31! 0.32! 0.01! 1%!
50!year! 0.33! 0.33! 0.00! 0%!
100!year! 0.37! 0.37! 0.00! 0%!
!
!
!
!
! ! ! 17!
Page 24
!
Table!13:!!Developed!Scenario!WBNM!Outlet!Peak!Flows!–!Outlet!2!
Developed!
Existing!Peak! Change!in!Peak! %!increase!in!Peak!
!! Flow!(m3/s)!
Conventional!Peak!
Flow!(m3/s)! Flow!
Flow!(m3/s)!
2!year! 0.11! 0.13! 0.02! 15%!
5!year! 0.15! 0.17! 0.02! 12%!
10!year! 0.17! 0.19! 0.02! 10%!
20!year! 0.20! 0.22! 0.02! 9%!
50!year! 0.21! 0.23! 0.02! 9%!
100!year! 0.23! 0.26! 0.02! 8%!
!
It!can!be!seen!that!the!peak!flows!have!increased!to!the!catchment!outlets.!!This!is!a!
result! of! the! development! increasing! the! impervious! area.! ! Mitigation! within! the!
catchment! will! be! required.! ! In! order! to! achieve! a! conservative! outcome! and!
recognizing! that! the! ‘green’! roof! will! not! act! entirely! as! a! catchment! with! a! 0%!
impervious!fraction!sizing!of!detention!infrastructure!was!undertaken!based!on!the!
developed!scenarios!with!the!conventional!roof!structure.!
3.5 Mitigated!Scenario!
When!comparing!the!peak!flows!in!the!existing!and!developed!scenarios,!increases!
in!the!peak!discharge!occur!at!the!catchment!outlets.!!As!a!result!a!realignment!of!
discharge! locations! has! been! undertaken,! as! described! previously.! ! Detention! will!
occur!from!the!driveway!via!the!combined!detention!and!bioTretention!basin,!flows!
from! the! hard! roof! will! be! captured! initially! in! the! 25! kL! Rainwater! Tank,! with!
overflows!to!the!25!kL!Stormwater!Tank,!with!low!flow!outlet!pipes!reducing!volume!
release!and!velocity!rates.!!The!Rainwater!Tank!will!not!serve!as!detention!storage.!!
Runoff!from!the!northern!half!of!the!green!roof!will!be!directed!primarily!onto!lawns!
to! create! sheet! flow! prior! to! exiting! into! the! natural! bushland.! ! Runoff! from! the!
southern!half!of!the!green!roof!will!be!directed!to!the!25!kL!Stormwater!Tank.!!The!
mitigated!scenario!is!detailed!in!Figure!7.!
Table!14:!Storage!and!Outlet!Details!of!Detention!System!
Peak!100!yr!
Storage! Storage!Height!
Catchment! Outlet!Dimensions! Water!Depth!
Volume!(m3)! (m)!
(m)!
1!x!50mm!at!the!
base!of!the!tank!plus!
SW!Tank!! 25! 2.0! 1.97!
1!x!100mm!IL!0.9m!
above!base!
2!x!225!mm!at!1.775!
Rainwater!
25! 2.0! from!the!base!of!the! 2.0!
Tank!
tank!
Driveway!
5m!weir!plus!50mm!
Detention! 7! 0.7!#! 0.704!
outlet!
Basin!
! ! ! 18!
Page 25
!
#! Measured! from! top! of! Bioretention! Extended! Detention! zone.! Total! depth! of! combined!
bioretention!and!detention!storage!is!1!m!above!planted!filter!media.!
All! modeling! parameters! remain! consistent! between! the! developed! and! mitigated!
scenarios,! with! the! addition! of! the! stormwater! and! rainwater! tanks! and! detention!
basin.!
A! comparison! of! the! peak! flows! between! the! existing,! developed! and! mitigated!
scenarios! are! presented! below! in! Table! 15and! Table! 16.! ! It! can! be! seen! that! nonT
worsening!of!peak!flows!are!achieved!at!each!outlet!to!the!site.!!
!
Table!15:!!Comparison!of!WBNM!Outlet!Peak!Flows!–!Outlet!1!
Existing!Peak! Developed!Peak! Mitigated!Peak! Change!in!Peak!
! Flow!(m3/s)! Flow!(m3/s)! Flow!(m3/s)! Flow!(m3/s)!
2!year! 0.19! 0.19! 0.19! 0.00!
5!year! 0.24! 0.25! 0.24! 0.00!
10!year! 0.27! 0.28! 0.27! 0.00!
20!year! 0.31! 0.32! 0.31! 0.00!
50!year! 0.33! 0.33! 0.33! 0.00!
100!year! 0.37! 0.37! 0.36! T0.01!
!
!
Table!16:!!Comparison!of!WBNM!Outlet!Peak!Flows!–!Outlet!2!
Existing!Peak! Developed!Peak! Mitigated!Peak! Change!in!Peak!
! Flow!(m3/s)! Flow!(m3/s)! Flow!(m3/s)! Flow!(m3/s)!
2!year! 0.11! 0.13! 0.11! 0.00!
5!year! 0.15! 0.17! 0.15! 0.00!
10!year! 0.17! 0.19! 0.17! 0.00!
20!year! 0.20! 0.22! 0.20! 0.00!
50!year! 0.21! 0.23! 0.21! 0.00!
100!year! 0.23! 0.26! 0.23! 0.00!
!
! !
! ! ! 19!
Page 26
LEGEND) Data)Source)Notes:) Project:))!71!Seaview!Terrace!Stormwater!Management!Plan!
! Proposed!development!layout!provided!by!TOD!
Consul>ng!for!use!in!this!inves>ga>on.! !
!Exis>ng!Catchment! ! !Drainage!line! Hydraulic!design!provided!by!FLOTH!for!use!in!this! !
!! inves>ga>on! )))))))))Figure)6))Catchment)Plan)
!Developed!Catchment ! !Deten>on!area! ! !
! !! Date:)29/01/15!
!Sheet!flow ! ! !Overflow! Drawn)by:)KM!
[OCR of page images]
LEGEND
Existing Catchment
| Developed Catchment
——-> Sheet flow
—> Drainage line
im Detention area
—S> Overflow
Data Source Notes:
Proposed development layout provided by TOD
Consulting for use in this investigation.
Hydraulic design provided by FLOTH for use in this
investigation
Project: 71 Seaview Terrace Stormwater Management Plan
Figure 6 Catchment Plan
Date: 29/01/15
Drawn by: KM
And
aquaintel
Page 27
!
!
!
!
!
!
Figure!7:!Detention!Strategy!
! !
! ! ! 21!
[OCR of page images]
aquaintel
Hard Roof Driveway External
Catchment
Grassed and Pool Area Green Roof Sth [Green RoofNth | > \
Bio Basin
Design by (5 m?— 300 mm ED;
others 400 mm filter media;
onan fawa Nitti Lower Lawn Nth } 100 mm dia. outlet) }
T
1
1
1
1
1
1
1
! Design by Design by I
' jj others ¥ others \ 1
1 Rainwater Tank \ '
1 25 m' volume — \
Bio Basin 1 2x 225mm; | sag Liday reuse) \ !
(12 m?-300mmED {A R775 AL \ '
above finished surface; }1 ‘ 1
400 mm filter media;) 3% \ 1
No Detention ! \ 1
1 1
1.x 100 mm dia; 1 1x50 mm; IL 0.0 RL from base return to sheet" ! '
IL -0.4 RL from 1 1x 100 mm dia; IL 0.9 RL from base flow prior to 1 I
finished surface 1 Outlet down hill environmental line \ ' 1
Outlet down hill ¥ , ¥ 4 v
Outlet 2 (Sth) Outlet 1(Nth)
Receiving Environment
Figure 7: Detention Strategy
21
Intelligent Water Management Solutions
Page 28
!
4 Detailed!Design!Documentation!
Detailed! design! documentation! has! been! prepared! by! TOD! Consulting! Engineers.!!
The! detailed! design! documentation! for! the! bioretention! systems! were! prepared! in!
accordance! with! the! “Bioretention! Technical! Design! Guidelines! –! Version! 1”!
(WaterbyDesign,!October!2012).!!!
Outlet! pipework! from! the! lower! bioretention! basin! and! Stormwater! Tank! is! to! be!
piped!below!RL!26!and!outlet!via!a!spreader.!!Calculation!of!level!spread!length!has!
been!undertaken!using!the!International!Erosion!Control!Association!Guidelines!and!
are!as!follows!in!Table!17.!
!
Table!17:!!Level!Spreader!Calculations!
!! Value! Reference!
100!yr!ARI!Peak!Flow!(m3/s)! 0.22!
!
Table!1!–!IESA!Level!Spreader!Fact!Sheet!
Max!Allowable!Discharge!Velocity!(m/s)! 0.9!
Poor!Soils;!>20%!grade!
Table!2!–!IESA!Level!Spreader!Fact!Sheet!
Sill!Length!(m!per!m3/s)! 19.4!
25%!grade!
Minimum!Calculated!Sill!Length!(m)! 4.3!
!
!
! !
! ! ! 22!
Page 29
!
5 Bioretention!Maintenance!Manual!
The!owner!(or!tenant)!of!the!site!will!be!the!asset!custodian!and!be!responsible!for!
maintenance!of!the!bioretention!system.!!The!asset!custodian!will!need!to!undertake!
onTgoing! maintenance! of! the! water! quality! devices.! ! Maintenance! for! the!
bioretention!basins!may!involve!the!following:!
1. Scheduled!inspections;!
2. Removal!of!noxious!plants!or!weeds;!
3. Maintaining!the!desired!vegetation;!!
4. Repairing!erosion;!
5. Unblocking!inlets!and!outlets;!
6. Removing!litter!and!debris;!
7. Managing!algal!or!moss!growth;!and!
8. Maintaining!the!permeability!of!the!filtration!media.!
To! assist! the! owner! (or! tenant)! with! the! onTgoing! maintenance! of! the! stormwater!
quality!devices!being!installed!onTsite,!a!Bioretention!Maintenance!Manual!has!been!
developed!and!is!provided!in!Appendix!4.!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
! ! ! 23!
[OCR of page images]
a
aquaintel
5 Bioretention Maintenance Manual
The owner (or tenant) of the site will be the asset custodian and be responsible for
maintenance of the bioretention system. The asset custodian will need to undertake
on-going maintenance of the water quality devices. Maintenance for the
bioretention basins may involve the following:
1.
NouwFYWwD
8.
Scheduled inspections;
Removal of noxious plants or weeds;
Maintaining the desired vegetation;
Repairing erosion;
Unblocking inlets and outlets;
Removing litter and debris;
Managing algal or moss growth; and
Maintaining the permeability of the filtration media.
To assist the owner (or tenant) with the on-going maintenance of the stormwater
quality devices being installed on-site, a Bioretention Maintenance Manual has been
developed and is provided in Appendix 4.
23
Page 30
!
6 Water!Quality!Monitoring!
6.1 Construction!
The! management! of! the! site! during! the! construction! phase! is! an! important! step! in!
ensure! water! quality! standards! are! achieved.! ! Implementation! of! best! practice!
Erosion! and! Sediment! Control! techniques! is! imperative! to! managing! the! quality! of!
runoff!affected!by!construction!works.!!!
The! following! points! provide! general! guidance! on! the! management! of! stormwater!
during!the!construction!phase.!!Detailed!Erosion!and!Sediment!Control!Management!
Plans!should!be!provided!during!the!operation!works!application!stage!in!accordance!
with!Council’s!Maroon!Manual!T!“Manual!for!Erosion!and!Sediment!Control”.!
1. Establish!a!single!stabilised!entry/exit!point!for!the!site!works;!!
2. Construct! a! shakeTdown! grid! at! the! entrance! to! facilitate! the! removal! of!
sediment! from! trucks! leaving! the! site.! The! access! road! extending! from! the!
end!of!existing!road!or!kerb!to!the!grid!should!comprise!a!150T200!mm!deep!
pad!of!40!mm!crushed!rock;!!
3. Install!sediment!fences!along!the!lower!boundaries!of!the!site;!
4. Install!bins!and/or!windTproof!litter!areas!onTsite!to!minimise!the!dispersion!
of!gross!pollutants;!!
5. Maintain! on! site! spare! materials! necessary! for! the! emergency! repair! of! all!
erosion! control! devices.! This! includes! silt! fences,! clean! crushed! rock! for!
reapplication! to! the! entrance! road! and! for! replacement! of! rock! within!
temporary!drainage!channels;!!
6. Following! each! day’s! construction! works,! ensure! that! any! material! on! road!
surfaces!is!swept!from!the!road,!and!not!permitted!to!be!washed!down!the!
gutters!and!piped!drainage!systems.!
7. Final! establishment! of! any! bioretention! basin! should! not! occur! until! full!
stabilisation! of! the! upstream! catchment! has! occurred;! preferably! these!
should! be! temporarily! turfed! during! the! maintenance! period! while! dwelling!
construction!is!occurring.!
!
It!shall!be!the!responsibility!of!the!developer,!through!their!principal!contractor,!to!
ensure!that!temporary!sediment!and!erosion!controls!are!installed!and!maintained!
correctly.!!
6.2 Operational!
Water! quality! monitoring! of! the! bioretention! system! is! not! proposed! for! the!
operational! phase.! ! The! “Maintaining! Vegetated! Asset”! guideline! highlights! that!
water! quality! monitoring! is! not! recommended! to! determine! the! performance! of!
every! vegetated! stormwater! asset,! as! it! is! a! specialized! field! that! is! complex! and!
costly.!!In!line!with!this!guideline!the!onTgoing!monitoring!of!water!quality!from!this!
device!is!not!considered!necessary!considering!the!small!size!of!the!development.!
! ! ! 24!
Page 31
!
7 Conclusions!
It! can! be! seen! from! the! results! presented! in! Table! 6! that! the! treatment! train!
proposed! for! the! development! achieves! the! performance! criteria! set! by! the! NSC.!!
Annual! Load! Reductions! of! Total! Suspended! Solids! (TSS),! Total! Nitrogen! (TN)! and!
Gross!Pollutants!(GP)!have!been!met.!!
A! detention! system! consisting! of! a! Stormwater! Tank! and! a! detention! basin! is!
proposed!on!the!site!in!order!to!achieve!Council’s!nonTworsening!criteria.!Table!15!
and!Table!16!provides!a!comparison!of!the!peak!existing,!developed!and!mitigated!
flows.!!It!can!be!seen!that!whilst!peaks!flows!increase!under!the!developed!scenario!
in! Catchment! 2,! the! modelled! detention! tank! ensures! nonTworsening! is! achieved.!!
Similarly! the! inclusion! of! the! small! detention! basin! at! the! northern! end! of! the!
driveway! ensures! that! the! peak! flows! within! Catchment! 1! are! mitigated! to! preT
development!condtions.!
This! plan! demonstrates! that! effective! treatment! of! stormwater! generated! by! the!
proposed!development!can!be!achieved!through!the!integration!of!Water!Sensitive!
Urban! Design! (WSUD)! principles.! ! Through! the! incorporation! of! bioretention!
gardens,!reuse!and!detention!system,!the!plan!successfully!demonstrates:!
• Compliance!with!the!requirements!of!NSC’s!Water!Quality!Objectives;!
• Ecological!sustainability!in!terms!of!the!development’s!impact!upon!receiving!
waters;!!
• Compliance!with!NSC!nonTworsening!of!peak!flows!in!the!2,!5,!10,!20,!50!and!
100!year!ARI!storm!events!(Development!Condition!28a);!and!!
• Addresses!concerns!raised!in!the!NSC!RFI!(dated!5!April!2016).!
!
!
! !
! ! ! 25!
Page 32
!
8 References!
!
!
1. WaterbyDesign!(2012),!“Maintaining!Vegetated!Assets”.!
!
2. WaterbyDesign!(2012),!“Bioretention!Technical!Design!Guidelines”.!
!
3. WaterbyDesign!(2010),!“MUSIC!Modelling!Guidelines”.!
!
4. Sunshine!Coast!Council!(2008),!“Manual!for!Erosion!and!Sediment!Control!–!
Maroon!Manual”.!
!
5. Noosa!Council!Council!(2006),!“The!Noosa!Plan”.!
!
6. Healthy! Waterways! (June! 2006),! “Water! Sensitive! Urban! Design! Technical!
Design!Guidelines!for!South!East!Queensland”.!
!
7. Queensland! Government! –! Natural! Resources! and! Water! (2007),!
“Queensland!Urban!Drainage!Manual!–!Volume!1!2nd!Edition”.!
!
8. Queensland!Government!(2014),!State!Planning!Policy!
!
!
!
!
! ! ! 26!
[OCR of page images]
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References
WaterbyDesign (2012), “Maintaining Vegetated Assets”.
WaterbyDesign (2012), “Bioretention Technical Design Guidelines”.
WaterbyDesign (2010), “MUSIC Modelling Guidelines”.
Sunshine Coast Council (2008), “Manual for Erosion and Sediment Control —
Maroon Manual”.
Noosa Council Council (2006), “The Noosa Plan”.
Healthy Waterways (June 2006), “Water Sensitive Urban Design Technical
Design Guidelines for South East Queensland”.
Queensland Government -— Natural Resources and Water (2007),
“Queensland Urban Drainage Manual - Volume 1 2"4 Edition’.
Queensland Government (2014), State Planning Policy
26
Page 33
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Appendix!1:!OPW!Drawings! ! ! ! ! ! ! ! ! [OCR of page images] 7 aquaintel Appendix 1: OPW Drawings Intelligent Water Management Solutions
Page 34
INSTALL URETEK GROUT ALONG THIS BOUNDARY TO A DEPTH OF 2.5m BELOW THE EXISTING SURFACE
290 BLOCKWORK RETAINING WALL ON
FOOTINGS SUPPORTED BY SCREW PILES
AS SHOWN. REFER DETAILS ON
STRUCTURAL DRAWING SET SHEET S21.
RV1 INSTALL CONCRETE PILES
PILING RIG TO RL 51.00
SITE TEMPORARY ACCESS :
A ESTABLISH SITE SURVEY MONITORING 290 BLOCKWORK RETAINING
- RV1
POINTS AND ISSUE SURVEY TO ENGINEER.
COMPLETE PRE CONSTRUCTION
WALL ON FOOTINGS
RV1 INSPECTIONS AND DILAPIDATION REPORTS SUPPORTED BY SCREW ROOF RL 52.55
RT
FOR ADJACENT STRUCTURES, POOLS, PILES AS SHOWN.
RV1 FILL WORKING
FENCES AND PATHS.
RT PLATFORM TO RL 49.30 ROOF RL 52.55
RV1 STAGE 1 PROCEDURE :
2.5m MIN
AFTER WALL
URETEK
STRIP AND LEVEL AT SITE ENTRANCE TO
INSTALLATION FORM TEMPORARY TRACK LEVEL 2 RL 49.55
RV1 INSTALL BOTH VERTICAL AND RAKING
SCREW PILES FILL WORKING
INSTALL 290 BLOCK RETAINING WALL AND WORKING PLATFORM STEEL
FILL TO FORM A WORKING PLATFORM. LEVEL 2 RL 49.55 PLATFORM TO RL 49.30
LOCALLY STABILISE ADJACENT FOOTINGS AFTER WALL PLATES SUPPORTED ON
MAXIMUM 1:2 BATTER TO BLOCK WALLS AND FENCES. MONITOR INSTALLATION STEEL BEAMS AS REQUIRED,
SLOPE. ADJACENT STRUCTURES, WALLS AND
SPANNING BETWEEN
GROUND LEVELS.
SCREW PILES.
LEVEL 1 RL 45.00
MAXIMUM 1:2 BATTER RL VARIES. REFER PLAN
LEVEL 1 RL 45.00 SLOPE. INSTALL CONCRETE
PILES TO RL 49.10
EARTHWORKS - STAGE 1 SCREW PILES : BASEMENT RL 40.80
1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1 RV1 219 x 8.2 GALV AND EPOXY PAINTED SCREW PILE
MINIMUM 8m DEEP 30T SWL. CONC. FILL (25 MPa)
RL 40.00
RV2 219 x 12.7 GALV AND EPOXY PAINTED SCREW PILE
MINIMUM 6m DEEP 60T SWL. CONC. FILL (25 MPA) SECTION A STAGE 1
WORKING PLATFORM STEEL
1:200 UNREDUCED AT A3
-
RT RAKING AT 1 IN 2.75 - 219 x 8.2 GALV AND EPOXY PAINTED SCREW PILE 1:100 UNREDUCED AT A1
SECTION B STAGE 2
PLATES SUPPORTED ON MINIMUM 12m LONG SWL = 60T TENSION. CONC. FILL (25 MPA)
STEEL BEAMS AS REQUIRED,
1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1
-
SPANNING BETWEEN B
SCREW PILES. -
TOP CONCRETE PILES DIMINISHES TOP CONCRETE PILES DIMINISHES
TOP CONCRETE PILES RL 51.00 TOP CONCRETE PILES RL 51.00 TOP CONCRETE PILES RL 51.00 WITH NATURAL SURFACE WITH NATURAL SURFACE
TOE AT RL 45.00 TOE AT RL 44.00 TOE AT RL 42.00 TOE AT RL 41.00 TOE AT RL 42.00
3.0m
2.5m
2.5m
TOP CONCRETE TOP CONCRETE
PILES RL 49.10 PILES RL 49.10
TOP CONCRETE TOP CONCRETE
PILES RL 49.10 TOE AT RL 41.00 TOE AT RL 42.00 PILES RL 46.50
TOP CONCRETE PILES RL 49.10
10
9.
TOE AT RL 38.00 TOE AT RL 40.00 TOE AT RL 42.00
.00 L 4
R
RL LES
EARTHWORKS - STAGE 2 STAGE 2 PROCEDURE :
AT E PI
40
1:200 UNREDUCED AT A3
T
1:100 UNREDUCED AT A1
INSTALL URETEK GROUT ALONG TOP BOUNDARY TO A DEPTH OF 2.5m MIN
RE
GRADUALLY INSTALL TEMPORARY SCREW PILES AND CONSTRUCTION PLATFORM OR A SUITABLE LEVELED PLATFORM FOR
NC
CFA PILE RIG.
E
CO
TO
LOCALLY STABILISE ADJACENT FOOTINGS TO BLOCK WALLS AND FENCES. MONITOR ADJACENT STRUCTURES, WALLS AND
GROUND LEVELS.
P
INSTALL 450mm DIAMETER CONTIGUOUS CFA GROUT PILED WALLS AS INDICATED ON PLAN.
TO
FORM TABLE DRAIN ALONG WESTERN BOUNDARY TO COLLECT ANY CONCENTRATED STORMWATER FROM ABOVE AND
ACROSS SITE, DISCHARGING TO APPROVED LOCATION AFTER INSTALLATION OF SEDIMENT / EROSION CONTROL ALL AS
DETAILED ON THE STORMWATER MANAGEMENT PLAN.
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to
copyright in accordance with the Brisbane address
GROUND LEVEL
UNIVERSAL PROPERTY A. VENESS
Designed
S. PRYSTUPA
Verified
PROPOSED NEW RESIDENCE AT EARTHWORKS PLANS AS SHOWN A1
agreement between Tod 283 ELIZABETH ST
Consulting pty ltd (tc) and tc's
client. This drawing shall only be
BRISBANE 4000
AUSTRALIA
COMPANY H. GRAY S. PRYSTUPA 71 SEAVIEW TCE, SUNSHINE BEACH STAGE 1 AND STAGE 2 Drawing Number
architects
ESTABLISHMENT 14517-OP22
postal address
used for this specific project. GPO BOX 353 Approved RPEQ No
planners BRISBANE RDP RP197117
interiors QUEENSLAND 4001
AUSTRALIA
Noosa: 07 5449 9600 S. PRYSTUPA 1137 LOCAL AUTHORITY NOOSA
This drawing shall not be used B 30.3.16 ISSUED FOR CONSTRUCTION A.V.
for construction until marked as Noel Robinson Architects Pty Ltd
tel +61(0)7 3229 5266
fax +61(0)7 3221 0796
Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date MCU APPROVAL 14/0084 HORIZ DATUM 0 10 20 30 40 50 60 Sheet Revision
ABN 62 323 175 502 [email protected] PO Box 61, Noosaville, QLD 4566
A 27.1.16 OPERATIONAL WORKS APPROVAL A.V. ROL APPROVAL VERT DATUM AHD
1 of 12 B
www.nrarc.com
'issued for construction' in the [email protected] www.todconsulting.com
DECEMBER 2015
ACN 010 011 720
revision description. Rev Date Revision Description Drawn ABN 39 128 805 336
OPW APPROVAL RL 41.410 MEASUREMENT BAR - INCREMENTS IN mm
Page 35
C
-
5
0
.2
.3
5
0
.3
49
RL 46.50
49
.4
49
CONSTRUCT AN EARTH RAMP
49
CONSTRUCT A 300 THICK DOWN BETWEEN PILE ROWS
PILE RESTRAINT SLAB
REFER BELOW FOR CONTINUATION
REFER STRUCTURAL DRAWING
SET FOR INFORMATION.
5
5
5
25
2
.3
2
.4
.4
.4
49
49
49
49
25
.4
49
STAGE 3 PROCEDURE :
PROGRESSIVELY REMOVE TEMPORARY
CONSTRUCTION PLATFORM AND
CONSTRUCT REINFORCED CONCRETE WALL
RL 46.50
HEAD BEAM PILE CAP, ON DOWN HILL SIDE
OF ACCESS.
0
INSTALL NEW PILE RESTRAINT SLAB
.3
REINSTATE SURFACE PROTECTION AND
49
SURFACE DRAINAGE TO SOILS BETWEEN
BOUNDARY AND NEW WALL, TO AVOID
EROSION AND LOCAL SURFACE SAND SLIP.
5
.3
MONITOR ADJACENT STRUCTURES, WALLS,
49
GROUND LEVELS AND SITE MONITORING
SURVEY POINTS.
EXCAVATE BEYOND THE PILE RESTRAINT
SLAB TO FORM THE RAMP DOWN TO THE
LOWER TURNAROUND PLATFORM.
CUT/FILL PLATFORM AREA AND USE
TEMPORARY SANDBAG RETAINING
STRUCTURES TO RETAIN FILL.
EARTHWORKS - STAGE 3
0
.5
49
1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1
DENOTES FINISHED CONCRETE SURFACE LEVEL.
CONSTRUCT A
300 THICK PILE
RESTRAINT SLAB
ROOF RL 52.55
CONSTRUCT AN EARTH RAMP
RL 46.50
LEVEL 2 RL 49.55
DOWN BETWEEN PILE ROWS
TURNAROUND PLATFORM
CUT
SCREW PILES FROM FILL
CONSTRUCTION
PLATFORM TO REMAIN.
REFER ABOVE FOR CONTINUATION
LEVEL 1 RL 45.00
RL VARIES. REFER PLAN
RL 46.50
TEMPORARY RETAINING
STRUCTURE. VARIES BETWEEN
1.0m AND 2.0m HIGH. REFER
DETAIL ON OP30.
BASEMENT RL 40.80
RL 38.00
POOL PLANT RL 37.25
SECTION C STAGE 3
1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1
- EARTHWORKS - STAGE 3 - CONTINUED
1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to
copyright in accordance with the Brisbane address
GROUND LEVEL
UNIVERSAL PROPERTY A. VENESS
Designed
S. PRYSTUPA
Verified
PROPOSED NEW RESIDENCE AT EARTHWORKS PLAN AS SHOWN A1
agreement between Tod 283 ELIZABETH ST
Consulting pty ltd (tc) and tc's
client. This drawing shall only be
BRISBANE 4000
AUSTRALIA
COMPANY H. GRAY S. PRYSTUPA 71 SEAVIEW TCE, SUNSHINE BEACH STAGE 3 Drawing Number
architects
ESTABLISHMENT 14517-OP23
postal address
used for this specific project. GPO BOX 353 Approved RPEQ No
planners BRISBANE RDP RP197117
C 4.5.16 AMENDED AS CLOUDED A.V. interiors QUEENSLAND 4001
S. PRYSTUPA 1137
This drawing shall not be used
AUSTRALIA
Noosa: 07 5449 9600 LOCAL AUTHORITY NOOSA
B 30.3.16 ISSUED FOR CONSTRUCTION A.V. tel +61(0)7 3229 5266 Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date 0 10 20 30 40 50 60 Sheet Revision
for construction until marked as Noel Robinson Architects Pty Ltd fax +61(0)7 3221 0796
[email protected] PO Box 61, Noosaville, QLD 4566 MCU APPROVAL 14/0084 HORIZ DATUM
ABN 62 323 175 502
A 27.1.16 OPERATIONAL WORKS APPROVAL A.V. ROL APPROVAL VERT DATUM AHD
2 of 12 C
www.nrarc.com
'issued for construction' in the [email protected] www.todconsulting.com
DECEMBER 2015
ACN 010 011 720
revision description. Rev Date Revision Description Drawn ABN 39 128 805 336
OPW APPROVAL RL 41.410 MEASUREMENT BAR - INCREMENTS IN mm
Page 36
DRIVEWAY RESTRAINING SLAB
CONSTRUCT AN EARTH RAMP
RL 46.50
DOWN BETWEEN WORKING
PLATFORMS
WORKING PLATFORM AT RL 44.50
RL 44.50
E
OP25
RL UR OW
.00 CE
E RA FO TE
WORKING PLATFORM AT RL 44.50
TO TU TO CRE
40 FA
AT L S LL
43.00
NA LES ON
PI P C
TOP CONCRE
TE PILES RL
44.40
TE PILES RL
TO
TOE AT RL 36
.50
.50
TOE AT RL 36
RL 4.3 E
AT L 4 RET
.40
.00
35 0
RL 44
PILES
R C
E
TO ES ON
E T
ONCR 36.50
TOP CONCRE
ADDITIONAL STAND ALONE
TOP C T RL
PI P C
TOE A PILE TOP RL 44.40
TO
TOE AT RL 36.50
L
E
1:2 MAXIMUM BATTER
WORKING PLATFORM AT RL 44.50
STABILISE EMBANKMENT
EARTHWORKS - STAGE 4
1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1
STAGE 4 PROCEDURE :
EXCAVATE TO FORM THE RAMP DOWN TO
THE NEXT WORKING PLATFORM AT RL 44.50.
CUT FOR PLATFORM AREA ALONG
PREVIOUSLY INSTALLED PILED WALL.
INSTALL PROPOSED PILES AT THIS LEVEL
AS INDICATED ON THE PLAN
STABILISE CUT BANKS WITH URETEK OR
APPROVED SIMILAR.
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to
copyright in accordance with the Brisbane address
GROUND LEVEL
UNIVERSAL PROPERTY A. VENESS
Designed
S. PRYSTUPA
Verified
PROPOSED NEW RESIDENCE AT EARTHWORKS PLAN AS SHOWN A1
agreement between Tod 283 ELIZABETH ST
Consulting pty ltd (tc) and tc's
client. This drawing shall only be
BRISBANE 4000
AUSTRALIA
COMPANY H. GRAY S. PRYSTUPA 71 SEAVIEW TCE, SUNSHINE BEACH STAGE 4 Drawing Number
architects
ESTABLISHMENT 14517-OP24
postal address
used for this specific project. GPO BOX 353 Approved RPEQ No
planners BRISBANE RDP RP197117
interiors QUEENSLAND 4001
AUSTRALIA
Noosa: 07 5449 9600 S. PRYSTUPA 1137 LOCAL AUTHORITY NOOSA
This drawing shall not be used B 30.3.16 ISSUED FOR CONSTRUCTION A.V.
for construction until marked as Noel Robinson Architects Pty Ltd
tel +61(0)7 3229 5266
fax +61(0)7 3221 0796
Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date MCU APPROVAL 14/0084 HORIZ DATUM 0 10 20 30 40 50 60 Sheet Revision
ABN 62 323 175 502 [email protected] PO Box 61, Noosaville, QLD 4566
A 27.1.16 OPERATIONAL WORKS APPROVAL A.V. ROL APPROVAL VERT DATUM AHD
3 of 12 B
www.nrarc.com
'issued for construction' in the [email protected] www.todconsulting.com
DECEMBER 2015
ACN 010 011 720
revision description. Rev Date Revision Description Drawn ABN 39 128 805 336
OPW APPROVAL RL 41.410 MEASUREMENT BAR - INCREMENTS IN mm
Page 37
D
-
POUR 450 DEEP LEVEL 1
BEAM FOR PILE DRIVEWAY RESTRAINING SLAB
RESTRAINT AT RL 45.00
REFER STRUCTURAL DRAWING
SET FOR INFORMATION.
RV1 RV1
RV1
RV1
E RV1
-
RV1
RV1 RV1
RV1
RV1
RV1
WORKING PLATFORM AT RL 44.50
POUR LEVEL 1 SLAB FOR
PILE RESTRAINT AT RL 45.00
REFER STRUCTURAL DRAWING
SET FOR INFORMATION.
EARTHWORKS - STAGE 5
1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1
STAGE 5 PROCEDURE :
INSTALL SCREW PILES AS SHOWN ON THE
PLAN IN ACCORDANCE WITH THE
SPECIFICATION AND TO THE CONTRACTORS
DETAILS.
POUR BEAM AND LEVEL 1 SLAB AS SHOWN SCREW PILES :
ON THE PLAN, REFERRING TO THE
ROOF RL 52.55 STRUCTURAL DRAWINGS FOR THE ROOF RL 52.55
RV1 219 x 8.2 GALV AND EPOXY PAINTED SCREW PILE
REQUIRED DETAILS. MINIMUM 8m DEEP 30T SWL. CONC. FILL (25 MPa)
RV2 219 x 12.7 GALV AND EPOXY PAINTED SCREW PILE
MINIMUM 6m DEEP 60T SWL. CONC. FILL (25 MPA)
RT RAKING AT 1 IN 2.75 - 219 x 8.2 GALV AND EPOXY PAINTED SCREW PILE
LEVEL 2 RL 49.55 LEVEL 2 RL 49.55
MINIMUM 12m LONG SWL = 60T TENSION. CONC. FILL (25 MPA)
EXISTING
SURFACE BACKFILL AS PER THE
ARCHITECT AND
LANDSCAPE
SCREW PILES FROM ARCHITECTS DRAWINGS
POUR BEAM FOR PILE CONSTRUCTION
LEVEL 1 RL 45.00
RESTRAINT PLATFORM TO REMAIN. LEVEL 1 RL 45.00
RL VARIES. REFER PLAN
ALL VERTICAL AND RAKING SCREW PILES SHALL FOUND AT LEAST 5m
BELOW A 27° LIINE PROJECTED FROM THE BASE OF THE SLOPE, AND
POUR SLAB (BEYOND) AT LEAST 7.0m BELOW ORIGINAL GROUND LEVEL.
FOR PILE RESTRAINT
THE SCREW PILING CONTRACTOR MUST ALLOW FOR PRE-BORING
AT RL 45.00 WHERE NECESSARY TO PENETRATE WEATHERED SANDSTONE
BASEMENT RL 40.80 BASEMENT RL 40.80 LAYERS.
RL 40.00 SCREW PILES ARE TO BE DESIGNED AND INSTALLED BY THE
CONTRACTOR TO SAFELY WITHSTAND THE SPECIFIED SAFE WORKING
LOADS, AND CERTIFIED BY AN EXPERIENCED RPEQ ENGINEER, WHO
SHALL PROVIDE APPROPRIATE FORM 15 AND FORM 16
RL 38.00
POOL PLANT RL 37.25 POOL PLANT RL 37.25
RL 36.50
SECTION D STAGE 5 SECTION E
1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1
- 1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1
-
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to
copyright in accordance with the Brisbane address
GROUND LEVEL
UNIVERSAL PROPERTY A. VENESS
Designed
S. PRYSTUPA
Verified
PROPOSED NEW RESIDENCE AT EARTHWORKS PLAN AS SHOWN A1
agreement between Tod 283 ELIZABETH ST
Consulting pty ltd (tc) and tc's
client. This drawing shall only be
BRISBANE 4000
AUSTRALIA
COMPANY H. GRAY S. PRYSTUPA 71 SEAVIEW TCE, SUNSHINE BEACH STAGE 5 Drawing Number
architects
ESTABLISHMENT 14517-OP25
postal address
used for this specific project. GPO BOX 353 Approved RPEQ No
planners BRISBANE RDP RP197117
interiors QUEENSLAND 4001
AUSTRALIA
Noosa: 07 5449 9600 S. PRYSTUPA 1137 LOCAL AUTHORITY NOOSA
This drawing shall not be used B 30.3.16 ISSUED FOR CONSTRUCTION A.V.
for construction until marked as Noel Robinson Architects Pty Ltd
tel +61(0)7 3229 5266
fax +61(0)7 3221 0796
Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date MCU APPROVAL 14/0084 HORIZ DATUM 0 10 20 30 40 50 60 Sheet Revision
ABN 62 323 175 502 [email protected] PO Box 61, Noosaville, QLD 4566
A 27.1.16 OPERATIONAL WORKS APPROVAL A.V. ROL APPROVAL VERT DATUM AHD
4 of 12 B
www.nrarc.com
'issued for construction' in the [email protected] www.todconsulting.com
DECEMBER 2015
ACN 010 011 720
revision description. Rev Date Revision Description Drawn ABN 39 128 805 336
OPW APPROVAL RL 41.410 MEASUREMENT BAR - INCREMENTS IN mm
Page 38
STAGE 6 PROCEDURE :
EXCAVATE BEYOND THE LEVEL 1 WORKING
20mm PLATE WALINGS WITH 3 x 150 UB
PLATFORM TO FORM THE RAMP DOWN TO A STRONG BACKS WELDED TO PILES AS SHOWN.
LOWER TURNAROUND PLATFORM AT RL 41.00.
EXCAVATE TO FORM ANOTHER RAMP DOWN
TO THE POOL LEVEL WORKING PLATFORM
.
CUT/FILL PLATFORM AREA AND USE AX
SCREW PILE
TEMPORARY SANDBAG RETAINING
. 0 m M .
2 G
AT LON
STRUCTURES TO RETAIN FILL.
STABILISE CUT BANKS WITH URETEK OR DRIVEWAY RESTRAINING SLAB ES
APPROVED SIMILAR AS REQUIRED. PIL 6.0m
W E
RE TO B
SC
2 19 ILES
Ø S. P
CR
SCREW PILE
LEVEL 1 BEAM AT RL 45.00
TEMPORARY RETAINING
STRUCTURE. VARIES BETWEEN C K
1.0m AND 2.0m HIGH. G BA
E
R ON
OP25 ST
UB
150 K
C
LEVEL 1 SLAB AT RL 45.00 BA
NG
T RO
S
UB AC
K
EARTHWORKS - STAGE 6 150 GB
600
ON
TR
BS
1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1 U G
150 KIN
RL 43.00
OR 37.00
RL 44.50
W
400
0
L
VE AT RL
RL 41.0
LE
O OL ORM
200
P F
AT
PL
LEVEL 1 WORKING
PLATFORM AT RL 44.50
00
41.
.50
RL
RL 44
4.00
RL 4 0
RL 43.0
0
TEMPORARY RETAINING
ESHAP
E RL 42.0
AND R STRUCTURE DETAIL
O S T A BILISE LA TF ORMS
ETE T KING P .0 0 1:50 UNREDUCED AT A3
HOTCR Y WOR RL 41
75mm S R TEMPORAR
1:25 UNREDUCED AT A1
FO
BANK
0.00
RL 4
PROVIDE 4 x RV2 SCREW PILES
UNDER RAINWATER TANK
G
AININ
Y RET HIGH.
ORAR
TEMP TURE. 2.0m
C
STRU
00
37.
PROVIDE 4 x RV2 SCREW PILES
20mm PLATE WALINGS WITH 3 x 150 UB UNDER STORMWATER TANK
RL
STRONG BACKS WELDED TO PILES AS
SHOWN ON THE ADJACENT DETAIL.
75mm SHOTCRETE TO STABILISE AND
RESHAPE BANK FOR TEMPORARY
Ø219 SCREW PILES AT 2.0m MAX. WORKING PLATFORMS
CRS. PILES TO BE 6.0m LONG.
1
BOUNDARY
1
POOL LEVEL WORKING 30° SLIPLINE
PLATFORM AT RL 37.00
30°0
TEMPORARY RETAINING
'0"
STRUCTURE. VARIES BETWEEN E
FAC
1.0m AND 2.0m HIGH. L SUR
A
UR
2.0m MAX.
INE NAT
TL POOL LEVEL WORKING TEMPORARY RETAINING
CU
PLATFORM AT RL 37.00 STRUCTURE. VARIES
BETWEEN 1.0m AND
1 2.0m HIGH.
4.0m MIN.
10
F
-
SECTION F
TEMPORARY RETAINING 1:200 UNREDUCED AT A3
-
1:100 UNREDUCED AT A1
STRUCTURE. VARIES BETWEEN
1.0m AND 2.0m HIGH.
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to
copyright in accordance with the Brisbane address
GROUND LEVEL
UNIVERSAL PROPERTY A. VENESS
Designed
S. PRYSTUPA
Verified
PROPOSED NEW RESIDENCE AT EARTHWORKS PLAN AS SHOWN A1
agreement between Tod 283 ELIZABETH ST
Consulting pty ltd (tc) and tc's
client. This drawing shall only be
BRISBANE 4000
AUSTRALIA
COMPANY H. GRAY S. PRYSTUPA 71 SEAVIEW TCE, SUNSHINE BEACH STAGE 6 Drawing Number
architects
ESTABLISHMENT 14517-OP26
postal address
used for this specific project. GPO BOX 353 Approved RPEQ No
planners BRISBANE RDP RP197117
C 4.5.16 AMENDED AS CLOUDED A.V. interiors QUEENSLAND 4001
S. PRYSTUPA 1137
This drawing shall not be used
AUSTRALIA
Noosa: 07 5449 9600 LOCAL AUTHORITY NOOSA
B 30.3.16 ISSUED FOR CONSTRUCTION A.V. tel +61(0)7 3229 5266 Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date 0 10 20 30 40 50 60 Sheet Revision
for construction until marked as Noel Robinson Architects Pty Ltd fax +61(0)7 3221 0796
[email protected] PO Box 61, Noosaville, QLD 4566 MCU APPROVAL 14/0084 HORIZ DATUM
ABN 62 323 175 502
A 27.1.16 OPERATIONAL WORKS APPROVAL A.V. ROL APPROVAL VERT DATUM AHD
5 of 12 C
www.nrarc.com
'issued for construction' in the [email protected] www.todconsulting.com
DECEMBER 2015
ACN 010 011 720
revision description. Rev Date Revision Description Drawn ABN 39 128 805 336
OPW APPROVAL RL 41.410 MEASUREMENT BAR - INCREMENTS IN mm
Page 39
G SMALL VEHICLE TURNAROUND AREA
-
PREVIOUS DRIVEWAY POUR
ROOF RL 52.55
PREVIOUS DRIVEWAY RESTRAINING SLAB POUR
PARTIAL LEVEL 2 POUR FOR WORKING
PLATFORM/TURN AROUND AREA LEVEL 2 RL 49.55
PREVIOUS LEVEL 1 POUR LEVEL 1 RL 45.00
E RL VARIES.
OP25
REFER PLAN
.55
SCREW PILES FROM
49
CONSTRUCTION
RL PLATFORM TO REMAIN.
AT
BASEMENT RL 40.80
AB
PARTIAL LEVEL 2 POUR FOR WORKING
SL
PLATFORM/TURN AROUND AREA
REFER STRUCTURAL DRAWING SET FOR INFORMATION.
POOL PLANT RL 37.25
CONSTRUCT Ø450 R.C. COLUMN UP FROM RL 36.50
PREVIOUSLY CONSTRUCTED ISOLATED
PILE BELOW.
REFER STRUCTURAL DRAWING SET FOR INFORMATION.
SECTION G STAGE 7
1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1
-
EARTHWORKS - STAGE 7
1:200 UNREDUCED AT A3
1:100 UNREDUCED AT A1
STAGE 7 PROCEDURE :
POUR COLUMN AND PART LEVEL 2 SLAB AS
SHOWN ON THE PLAN, REFERRING TO THE
STRUCTURAL DRAWINGS FOR THE
REQUIRED DETAILS.
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to
copyright in accordance with the Brisbane address
GROUND LEVEL
UNIVERSAL PROPERTY A. VENESS
Designed
S. PRYSTUPA
Verified
PROPOSED NEW RESIDENCE AT EARTHWORKS PLAN AS SHOWN A1
agreement between Tod 283 ELIZABETH ST
Consulting pty ltd (tc) and tc's
client. This drawing shall only be
BRISBANE 4000
AUSTRALIA
COMPANY H. GRAY S. PRYSTUPA 71 SEAVIEW TCE, SUNSHINE BEACH STAGE 7 Drawing Number
architects
ESTABLISHMENT 14517-OP27
postal address
used for this specific project. GPO BOX 353 Approved RPEQ No
planners BRISBANE RDP RP197117
interiors QUEENSLAND 4001
AUSTRALIA
Noosa: 07 5449 9600 S. PRYSTUPA 1137 LOCAL AUTHORITY NOOSA
This drawing shall not be used B 30.3.16 ISSUED FOR CONSTRUCTION A.V.
for construction until marked as Noel Robinson Architects Pty Ltd
tel +61(0)7 3229 5266
fax +61(0)7 3221 0796
Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date MCU APPROVAL 14/0084 HORIZ DATUM 0 10 20 30 40 50 60 Sheet Revision
ABN 62 323 175 502 [email protected] PO Box 61, Noosaville, QLD 4566
A 27.1.16 OPERATIONAL WORKS APPROVAL A.V. ROL APPROVAL VERT DATUM AHD
6 of 12 B
www.nrarc.com
'issued for construction' in the [email protected] www.todconsulting.com
DECEMBER 2015
ACN 010 011 720
revision description. Rev Date Revision Description Drawn ABN 39 128 805 336
OPW APPROVAL RL 41.410 MEASUREMENT BAR - INCREMENTS IN mm
Page 40
SPREAD WATER FROM TABLE DRAIN AND OVERLAND FLOW OVER
TABLE DRAIN PLACED BEHIND PILING ARRANGEMENT TO COLLECT ADJACENT OVERLAND FLOW. DIRECT OUT PAST LINE OF PROPOSED SERVICE STRUCTURE. PILE CAP. CONSTRUCT PILE CAP AT NATURAL SURFACE LEVEL.
X Y 600 SQ x 500 DEEP SUMP PIPED TO OSD
OP29 OP29
TABLE DRAIN TABLE DRAIN TABLE DRAIN
OPEN DRAIN OPEN DRAIN OPEN DRAIN Ø225 SERVICE STRUCTURE.
OPEN DRAIN u
TO O PVC PIPE
N
5 RL 49.50
5
0
AI
.3 SD
.4
.4
0 49
DR
49
49
.5
49
ED
49.
0
25
.3
AT
49
GR
SURFACE WATER 5
5
52 49.
5
2
SURFACE WATER
2
. 525
.5
.5
5
OVERLAND FLOW PATH 49
.4
49
49
OVERLAND FLOW PATH
49
5
RIP RAP ROCK PROTECTION. USE
2
.5
49.
49
525 400-500mm GRANITE BOULDERS TO FORM
SPILLWAY ANTI-SCOUR PROTECTION.
OSD AND BIO-RETENTION.
REFER SHEETS OP31 AND OP32
GARAGE SURFACE WATER OVERLAND FLOW PATH
CARPARKING WORKSHOP
0
RL 49.55
.4
49
MAIN RESIDENCE ENTRY 49.
5 5
5
5
.5
RL 49.55
.5
49.
5
49
.4
49
55
49
49.
55
DRIVEWAY PLAN
1:200 UNREDUCED AT A3
50 1:100 UNREDUCED AT A1
49.
DENOTES FINISHED CONCRETE SURFACE LEVEL.
WEBFORGE STEEL GRATING
OR APPROVED SIMILAR
R.L. AS SHOWN
PIPE SL82 MESH PLACED
CENTRALLY 225 LAPS
I.L.
150
150 600 x 600 150
TYPICAL GRATED PIT DETAIL
PROPRIETARY PRECAST PITS AND GRATES MAY BE USED IN PLACE OF
THOSE SHOWN, SO LONG AS THEY ARE APPROVED IN ADVANCE BY THE
ENGINEER ALL GRATES ARE TO BE OF CYCLE SAFE DESIGN, HEAVY DUTY
TYPE MANUFACTURED TO AS 3996 - LOAD CLASS C IF CONSTRUCTED OF
MILD STEEL, GRATES ARE TO BE HOT DIPPED GALVANISED AFTER
FABRICATION
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to
copyright in accordance with the Brisbane address
GROUND LEVEL
UNIVERSAL PROPERTY A. VENESS
Designed
S. PRYSTUPA
Verified
PROPOSED NEW RESIDENCE AT DRIVEWAY AND OVERLAND AS SHOWN A1
agreement between Tod 283 ELIZABETH ST
Consulting pty ltd (tc) and tc's
client. This drawing shall only be
BRISBANE 4000
AUSTRALIA
COMPANY H. GRAY S. PRYSTUPA 71 SEAVIEW TCE, SUNSHINE BEACH FLOW PATH DETAILS Drawing Number
architects
ESTABLISHMENT 14517-OP28
postal address
used for this specific project. GPO BOX 353 Approved RPEQ No
planners BRISBANE RDP RP197117
C 4.5.16 AMENDED AS CLOUDED A.V. interiors QUEENSLAND 4001
S. PRYSTUPA 1137
This drawing shall not be used
AUSTRALIA
Noosa: 07 5449 9600 LOCAL AUTHORITY NOOSA
B 30.3.16 ISSUED FOR CONSTRUCTION A.V. tel +61(0)7 3229 5266 Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date 0 10 20 30 40 50 60 Sheet Revision
for construction until marked as Noel Robinson Architects Pty Ltd fax +61(0)7 3221 0796
[email protected] PO Box 61, Noosaville, QLD 4566 MCU APPROVAL 14/0084 HORIZ DATUM
ABN 62 323 175 502
A 27.1.16 OPERATIONAL WORKS APPROVAL A.V. ROL APPROVAL VERT DATUM AHD
7 of 12 C
www.nrarc.com
'issued for construction' in the [email protected] www.todconsulting.com
DECEMBER 2015
ACN 010 011 720
revision description. Rev Date Revision Description Drawn ABN 39 128 805 336
OPW APPROVAL RL 41.410 MEASUREMENT BAR - INCREMENTS IN mm
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