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SDA-1116-034770 - Proposed nbn Facility at 23 Jirrima Cres Cooroibah - Response to Information Request
Attached to the e-mail SDA-1116-034770 - Proposed nbn Facility at 23 Jirrima Cres Cooroibah - Response to Information Request .eml, inside MCU16/0099 & OPW16/0218 - Proposed NBN Facility at 23 Jirrima Cres Cooroibah - Response to Information Request.
13 February 2017 Attn: Gabriel Escobar Department of Infrastructure, Local Government and Planning PO Box 1129 Maroochydore QLD 4558 Dear Sir/Madam, Response to Information Request – SDA-1116-034770 – Material Change of Use for a Telecommunications Facility, and Operational Works for Waterway Barrier Works, located at 23 Jirrima Crescent, Cooroibah (Lot 47 on RP136461) We refer to your request for further information on 21 November 2016, in accordance with section 276 of the Sustainable Planning Act 2009 at 23 Jirrima Crescent, Cooroibah (Lot 47 on RP136461). Prior to addressing the Department’s requested information, we inform the Department that the proposed compound area for the Telecommunications Facility has been relocated approximately 40 m south-east of the original proposed location. This is in direct response to Noosa Council’s Information Request, which requested the following: “Riparian Buffer Area The infrastructure use is proposed within a riparian buffer area. The proposed location of the infrastructure use is contrary to Specific Outcome O5 of the Biodiversity Overlay Code and is not supported. Information Required 1. Please provide amended plans siting the proposed infrastructure use and associated lease area wholly outside the riparian buffer area.” Please find attached as Appendix A the Amended Proposal Plans which illustrate the revised compound location. If the Department could please utilise the new plans throughout the remainder of the referral assessment, it would be greatly appreciated. We note that no changes to the access track or associated Waterway Barrier Works are proposed. Thus, in accordance with section 278(1) (a) of the Sustainable Planning Act 2009, please find below our formal response to the Department’s requested information: Raising or Constructing Waterway Barrier Works 1. IDAS form 27 mandatory information Please provide scaled drawings of the proposed waterway barrier works (new culvert crossing), the following should be included;
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- details of the waterway (stream profile, morphology, riparian habitats);
Please refer to Appendix B for detailed design drawings of the proposed culvert replacement,
which incorporates details of the waterway.
With specific regard to riparian habitats, it is advised that a pre-clearing flora and fauna survey will
be undertaken by suitably qualified ecologists prior to any construction works commencing, as per
the requirements of the Nature Conservation Act 1992 (NC Act). This survey will be undertaken in
accordance with Section 3.2.1 of the Flora Survey Guidelines – Protected Plants, and will survey
both the clearing impact area associated with the facility, together with a 100 m buffer zone.
Likely development impacts on riparian Habitats existing in the waterway as a result of the culvert
replacement will be identified through this process, and suitable management measures will be
identified at that time. These management measures will then be incorporated into a Construction
Management Plan.
- details of the design features that mitigate the impacts on fish passage, e.g. how the
proposed culvert meets the design requirements of the self-assessable code WWBW01- Part
3, Culvert Crossings.
The following design features have been incorporated into the culvert design to mitigate the impacts
on fish passage:
• The culvert will be installed at approximately 550mm below bed level;
• The culvert will be backfilled with bed material won from the site to maintain and simulate natural
bed surface; and
• The culvert will be installed at a minimum of 1200mm wide to allow for fish passage.
- Include details of the culvert base, will it be at or below bed level, details of the culvert cell
bed – e.g. concrete or natural bed, any low flow channels incorporated into the design, and
dimensions of the crossing - including cross sections of the culvert crossing within the
waterway.The infrastructure use is proposed within a riparian buffer area. The proposed
location of the infrastructure use is contrary to Specific Outcome O5 of the Biodiversity
Overlay Code and is not supported.
Details of the culvert base are as follows:
• The culvert base will be approximately 550mm below bed level;
• The base will comprise a concrete slab, backfilled with bed material won from the site;
• No low-flow channels are proposed to be incorporated; and
• Dimensions of the crossing is as follows:
o 2mmx1200mmx1200mm reinforced concrete box culverts (RCBCs); and
o 4800mm long.
2. POI1 – Development will not increase the risk of mortality, disease or injury or compromise the
health and productivity of fisheries resources.
It has been stated that the development does not comply with section 5.1.6 of the self-assessable
code WWBW01- Part 3: Culvert Crossings- “if it is necessary to remove vegetation (marine, aquatic
or riparian) for the development, the vegetation is to be cut no lower than ground level and the roots
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are to be left in the ground to aid in stabilisation. If deep excavation is required during construction
the roots may only be removed within the construction footprint area under this code.”
Please provide further information on this aspect of the development and how the development will
not increase the risk to fisheries resources if this requirement cannot be met.
Minor vegetation clearing is required as part of the culvert replacement. The vegetation required to be
removed at the roots will be contained wholly within the construction footprint, to allow for construction of
the foundation of the new culvert. The extent of the vegetation to be cleared is shown in the Photographs
attached within Appendix C.
All other vegetation clearing will comply with Section 5.1.6 of the self-assessable code WWBW01-Part 3:
Culvert Crossings, in that it will not be cut below ground level. This minor clearing is not considered to
constitute a significant risk to fisheries resources.
3. PO4 – response to AO4.2 of SDAP Module 5.2; If the barrier remains in place, fish passage
provision in accordance with the approved design and operation is maintained as long as the barrier
remains.
Please detail how the culvert will be maintained so that the fish passage features of the structure
(e.g. low flow channel and culvert cells) remain navigable by fish (i.e. not silted up or block by
debris).
The following measures will be incorporated into the culvert design so that the fish passage features of the
structure remain navigable by fish:
• Steps and drops in elevation across the bed gradient will be eliminated to provide a level fish
crossing;
• The culvert will be installed at approximately 550mm below bed level;
• The culvert will be backfilled with bed material won from the site to maintain and simulate natural
bed surface;
• The culvert will be installed at a minimum of 1200mm wide to allow for fish passage; and
• The proposed culvert will increase the cell cross-sectional area of the existing culvert
configuration.
4. PO10 – Offsets.
Without detailed designs of the culvert crossing, it cannot be determined whether the proposed
development will result in a significant residual impact to fish passage. Please provide detailed
design drawings including information on the design features incorporated into the culvert design
that have been utilised to allow for fish passage through the structure. Refer to the DILGP Significant
Residual Impact Guideline – section 3.8 “Waterways providing for fish passage” to determine if a
significant residual impact is expected.
Please refer to Appendix B for detailed design drawings of the proposed culvert replacement.
The proposed culvert replacement will not result in a significant residual impact to fish passage given the
following:
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• The proposed culvert is to feature a larger, cell cross-sectional area compared to the existing
culvert configuration. This will prevent increased water depth upstream of the barrier, which can
result in loss of in-stream plants, leading to reduced food supply or loss of breeding habitat;
• The proposed culvert cell has been adopted to provide equal or better fish passage for the
waterway;
• The waterway bed is to be retained with natural substrate comparable to the natural substrate
size and consistency; and
• During and after construction, the works will be undertaken as per the requirements of
WWBW01 Part 3 Section 5.1, including:
o The waterway will be restored to its existing condition immediately on completion of the
works;
o Impacts on water quality during construction will be minimised by undertaking works
set out in the Best Practice Erosion and Sediment Control guidelines 2008;
o Construction works will not occur during times of elevated flows; and
o Provision will be made to minimise the risk of fish killing during construction, such as
through entrapment of fish upstream of work site.
5. PO20 - Fish passage is provided for:
(1) in the inherent design of the waterway barrier works
(2) over the in-situ life of the barrier in that position through adequate construction and maintenance
of the barrier.
Please confirm through providing detailed plans that the culvert design will comply with the design
provisions of the self-assessable code WWBW01- Part 3 Culvert Crossings for Amber waterways.
If the plans are not in line with the self-assessable code, please provide detail on the following, in
relation to the culvert crossing:
- The expected drown out characteristics of the culvert crossing and the ability for fish to
cross the barrier under all flow conditions – i.e. water velocities will not exceed 0.3ms
through the low flow channel
- The expected timing and duration of drown out events and the delay expected to fish
passage when there are flows in the system but no fish passage being provided.
As shown on the detailed plans, the culvert design complies with the design provisions of the self-assessable
code WWBW01- Part 3 Culvert Crossings for Amber waterway, whereby fish passage is provided by the
following culvert design features:
• The culvert will be installed at approximately 550mm below the bed level;
• The culvert will be backfilled with bed material won from the site to maintain and simulate natural
bed surface;
• The culvert will be installed at a minimum of 1200mm wide to allow for fish passage; and
• The culvert will be installed at no steeper gradient than the waterway bed gradient to limit
velocity increases through the culvert.
6. PO23 - Waterway barriers that are culverts provide adequate fish passage for the site, and:
(1) fish passage is provided for the life of the crossing
(2) hydraulic conditions (depth, velocities and turbulence) from the downstream to the upstream
limit of the structure allow for fish passage of all fish attempting to move through the crossing at all
flows up to the drownout of the structure.
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Please provide the following information in relation to the culvert crossing design:
- please provide information on why a bridge is not suitable at this site (i.e. the reason a
culvert has been proposed instead of a bridge)
The proposed works consist of replacing an existing culvert. A bridge would not be a practical option
for a low height structure in this instance.
- provide information or drawings which detail that the culverts cells extend 100 per cent of
the main channel width or that they comply with the self-assessable code.
The culvert cells are designed to extend 100 per cent of the main channel width, and the crossing
incorporates at least one (box) culvert with a minimum width of 1200mm in accordance with
WWWBW01 Part 3 for amber waterways.
- confirm that the culvert crossing and associated erosion protection are installed at no
steeper gradient than the waterway bed gradient
-
The culvert crossing is to be installed at the gradient of the existing waterway bed.
Prior to undertaking the works, the appointed contractor will prepare a Construction Environmental
Control Plan (CEMP) for approval, identifying risks and management of these risks during
construction, including associated erosion and sediment control/protection required.
- provide detailed designs showing that there are no drops in elevation at the joins of the
culvert invert, apron and scour protection, and how this will be maintained for the life of the
crossing
As shown within the detailed design drawings attached as Appendix B, there will be no drops in
elevation at the joints of the culvert invert, apron or scour protection.
- Confirm which is applicable:
o The culvert will be buried a minimum of 300millimetres to allow bed material deposit
and reform the natural bed on top of the culvert base, or;
o The base of the culvert is the stream bed, or;
o The base of the culvert cell is roughened throughout the culvert floor to simulate
natural bed conditions.
The culvert will be buried a minimum of 300mm to allow for bed material deposit and reform the
natural bed on top of the culvert base.
- Please indicate if any baffles or other roughening elements are to be used
According to WWBW01 Part 3, roughening is only required for red waterways, or amber waterways
where the culvert is installed at less than 300mm below the natural bed level. In this instance, the
proposed culvert will be installed at approximately 550mm below bed level, therefore no baffles or
other roughening elements are proposed to be used.
7. PO25 All waterway barriers are designed, constructed and maintained to provide adequate fish
passage for the site and fish passage is provided for the life of the barrier.
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Please detail how fish passage will be maintained with particular reference to expected or modelled
hydraulic conditions from the downstream to the upstream limit of the crossing.
Please confirm through providing plans that the culvert design will comply with the design
provisions of the self-assessable code WWBW01- Part 3 Culvert Crossings. If the plans are not in
line with the self-assessable code;
- please detail how hydraulic conditions over the barrier will allow for fish passage over all
flow conditions.
- how water quality across the barrier will allow for fish passage.
Response
• how hydraulic conditions over the barrier will allow for fish passage over all flow conditions;
Please refer to Appendix C for detailed design drawings of the proposed culvert replacement.
Hydraulic conditions over the barrier will allow for fish passage over all flow conditions given the
following:
• The culvert crossing is to be installed at a no steeper gradient than the waterway bed gradient
to limit velocity increases through the culvert as fish can only swim against relatively low
velocities;
• A larger cell cross-sectional area compared to the existing culvert configuration is proposed.
This will prevent increased water depth upstream of the barrier which can result in a loss of in-
stream plants, leading to reduced food supply or loss of breeding habitat; and
• The obvert of the culvert is installed at approximately 550mm below the bed level.
• how water quality across the barrier will allow for fish passage.
Water quality across the barrier will allow for fish passage given the following:
• Impacts on water quality during construction will be minimised by undertaking works set out in
the Best Practice Erosion and Sediment Control guidelines 2008;
• Prior to undertaking the works, the contractor shall prepare a Construction Environmental
Control Plan (CEMP) for approval, identifying risks and management of these risks during
construction, including associated erosion and sediment control/protection required; and
• The culvert will be recessed into the natural bed by 550mm and backfilled with bed material
comparable to the natural substrate size and consistency to minimise impact on water quality.
We consider that the information above provides an adequate response to all of the information requested
in accordance with s.278 of the Sustainable Planning Act. Please contact Kelly Pickering on (07) 3173 8353,
or alternatively by e-mail [email protected] if you require further information.
Yours Sincerely,
Kelly Pickering
Town Planner (Aurecon)
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Appendices
Appendix A – Amended Proposal Plans
Appendix B – Detailed Design Drawings
Appendix C – Photographs
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Appendix A – Amended Proposal Plans
8
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Appendix A — Amended Proposal Plans
Page 9
Client:
DATE OF ISSUE
DRAWING PACKAGE VERSION
GENERAL SITE CODE: 4GYM-51-36-COOO
Client:
COOROIBAH
ERICSSON
23 JIRRIMA CRESCENT
ELECTRICAL
COOROIBAH
Client:
QLD 4565
RF AND TX CONFIGURATIONS
RFNSA No.: 4565010 Project:
NATIONAL BROADBAND
STRUCTURAL NETWORK
SITE No: 4GYM-51-36-COOO
COOROIBAH
23 JIRRIMA CRESCENT
COOROIBAH
QLD 4565
CIVIL PRELIMINARY
MONOPOLE DOCUMENTATION
Rev Date Revision Details
LEASE
DESIGNER: JR
DISTRIBUTION PROJECT SUMMARY CHECKED:
APPROVED:
MR
LS
Drawing Title:
COVER SHEET
Drawing No. Revision
4GYM-51-36-COOO-T1 03
COPYRIGHT © NBN Co LIMITED ABN 86 136 533 741 . ALL RIGHTS RESERVED. VERSION 10 - SEPT 2011
Page 10
Client:
Client:
ERICSSON
Client:
Project:
NATIONAL BROADBAND
NETWORK
SITE No: 4GYM-51-36-COOO
COOROIBAH
23 JIRRIMA CRESCENT
COOROIBAH
QLD 4565
PRELIMINARY
Rev Date Revision Details
DESIGNER: JR
CHECKED: MR
APPROVED: LS
Drawing Title:
SITE SPECIFIC
NOTES
Drawing No. Revision
4GYM-51-36-COOO-C1 02
COPYRIGHT © NBN Co LIMITED ABN 86 136 533 741 . ALL RIGHTS RESERVED. VERSION 10 - SEPT 2011
Page 11
Client:
SITE LOCATION
Client:
ERICSSON
Client:
COPYRIGHT © WHEREIS.COM
SITE CO-ORDINATES Project:
NATIONAL BROADBAND
MONOPOLE LOCATION NETWORK
SITE No: 4GYM-51-36-COOO
COOROIBAH
23 JIRRIMA CRESCENT
COOROIBAH
QLD 4565
PRELIMINARY
Rev Date Revision Details
DESIGNER: JR
CHECKED: MR
APPROVED: LS
Drawing Title:
OVERALL
SITE PLAN
Drawing No. Revision
4GYM-51-36-COOO-C2 03
COPYRIGHT © NBN Co LIMITED ABN 86 136 533 741 . ALL RIGHTS RESERVED. VERSION 10 - SEPT 2011
Page 12
Client:
Client:
ERICSSON
Client:
Project:
NATIONAL BROADBAND
NETWORK
SITE No: 4GYM-51-36-COOO
COOROIBAH
23 JIRRIMA CRESCENT
COOROIBAH
QLD 4565
PRELIMINARY
Rev Date Revision Details
DESIGNER: JR
CHECKED: MR
APPROVED: LS
Drawing Title:
SITE SETOUT
PLAN
Drawing No. Revision
4GYM-51-36-COOO-C3 02
COPYRIGHT © NBN Co LIMITED ABN 86 136 533 741 . ALL RIGHTS RESERVED. VERSION 10 - SEPT 2011
Page 13
Client:
Client:
ERICSSON
Client:
Project:
NATIONAL BROADBAND
NETWORK
SITE No: 4GYM-51-36-COOO
COOROIBAH
23 JIRRIMA CRESCENT
COOROIBAH
QLD 4565
PRELIMINARY
Rev Date Revision Details
DESIGNER: JR
CHECKED: MR
APPROVED: LS
Drawing Title:
SITE ELEVATION
AND DETAILS
Drawing No. Revision
4GYM-51-36-COOO-C4 02
COPYRIGHT © NBN Co LIMITED ABN 86 136 533 741 . ALL RIGHTS RESERVED. VERSION 10 - SEPT 2011
Page 14
Client:
Client:
ERICSSON
Client:
Project:
NATIONAL BROADBAND
NETWORK
SITE No: 4GYM-51-36-COOO
COOROIBAH
23 JIRRIMA CRESCENT
COOROIBAH
QLD 4565
PRELIMINARY
Rev Date Revision Details
DESIGNER: JR
CHECKED: MR
APPROVED: LS
Drawing Title:
NBN ANTENNA
CONFIGURATION
& SETOUT PLAN
Drawing No. Revision
4GYM-51-36-COOO-A1 02
COPYRIGHT © NBN Co LIMITED ABN 86 136 533 741 . ALL RIGHTS RESERVED. VERSION 10 - SEPT 2011
Page 15
Appendix B – Detailed Design Drawings
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Appendix B — Detailed Design Drawings
Page 16
Client:
CULVERT SETOUT DATA
POINT E N IL
A 499973.6719 7085511.3088 2.529
B 499973.9585 7085506.5173 2.482
Client:
3.5
2.5
3.0
5
2.5
2.
ERICSSON
2.5
3.0 Client:
3.5
3.5 C C
3.5 C C C
C C
C C
C C
C C
C C
C C
C C
C C
C C
C C
C Project:
NATIONAL BROADBAND
NETWORK
3.5
3.5 COOROIBAH
3.0 3.5
3.5 2.5
4.0
3.0
2.5
EXISTING CONTOUR - 0.050m INTERVAL
01 21.12.16 PRELIMINARY ISSUE
3.5
EXISTING CONTOUR - 0.5m INTERVAL
Rev Date Revision Details
2.5 EXISTING CONTOUR LABEL
3.5
PROPOSED CULVERT
Aurecon Australia Pty Ltd ABN 54 005 139 873
EXISTING CULVERT
1. REFER DRAWING 4GYM-51-36-C000-C6 FOR CULVERT ELEVATION AND
DESIGNER: A.O.H
SECTION. C PROPOSED CHECKED: CS
2. EXISTING PAVEMENT TO BE RECONSTRUCTED TO THE EXTENT SHOWN NBN SUBMAIN (UNDERGROUND)
ON THE PLAN DUE TO THE DETERIORATING CONDITION. THE APPROVED: LS
RECONSTRUCTION APPLIES TO THE EXISTING CONCRETE PAVEMENT Drawing Title:
AND EXISTING TIMBER LOGS, TO BE REPLACED WITH CONCRETE
PAVEMENT IN ACCORDANCE TO IPWEA STD. DRG. NO. RS-050. TIE PROPOSED ACCESS ROAD TO BE PLAN 1 0 2 4m
RECONSTRUCTED
SMOOTHLY TO EXISTING ACCESS TRACK AND MAKE GOOD. SUITABLE 1:100
SUB BASE SHALL BE CONSTRUCTED UNDER PROPOSED CONCRETE SCALE 1:100
PAVEMENT AS DIRECTED BY GEOTECHNICAL ENGINEER.
3. THE CONTRACTOR SHALL CONFIRM THE SUBGRADE STRENGTH OF ALL
ROADS AND OBTAIN A 4-DAY SOAKED CBR FOR THE SUBGRADE. THE
Drawing No. Revision
REQUIRED SUB BASE THICKNESS SHALL BE APPROVED BY THE
GEOTECHNICAL ENGINEER PRIOR TO COMMENCEMENT.
01
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Client:
Client:
ERICSSON
Client:
ELEVATION PROPOSED CULVERT
(CULVERT INLET)
2x1200 mm CLEAR OPENING EXISTING CULVERT Project:
1:50
1. EXISTING CONCRETE PAVEMENT TO BE REPLACED WITH THE PROPOSED
NATIONAL BROADBAND
2x1200x1200 RCBCs. NETWORK
2. CULVERT CROSSINGS TO BE INSTALLED BELOW BED LEVEL AS SHOWN AS PER
THE REQUIREMENTS OF WWBW01 PART 3 : CULVERT CROSSINGS. CULVERT
BASE IS TO BE BACKFILLED WITH BED MATERIAL WON FROM SITE TO SIMULATE
NATURAL BED CONDITIONS TO FACILITATE FISH PASSAGE. THE GEOTECHNICAL
ENGINEER SHALL CARRY OUT INSPECTION OF THE EXISTING BED SUBSTRATE
COOROIBAH
TYPES AND BANK STABILITY ASSESSMENT. UNSUITABLE MATERIAL IS TO BE
REMOVED AND BACKFILLED WITH ROCKFILL IF DIRECTED.
3. CONTRACTOR TO PROVIDE TEMPORARY VERTICAL SUPPORT FOR EXISTING
CONDUITS DURING CONSTRUCTION. ALTERNATIVELY, EXISTING SERVICES TO
BE RE-ROUTED PRIOR TO CULVERT CONSTRUCTION SUBJECT TO THE
APPROVAL OF THE UTILITY OWNER.
01 21.12.16 PRELIMINARY ISSUE
Rev Date Revision Details
Aurecon Australia Pty Ltd ABN 54 005 139 873
DESIGNER: A.O.H
CHECKED: CS
APPROVED: LS
Drawing Title:
LONGITUDINAL
500 0 1000 2000mm
SECTION Drawing No. Revision
1:50
SCALE 1:50
01
Page 18
Client:
GENERAL NOTE
DRAINAGE STRUCTURES
1. THE CONTRACTOR SHALL COMPLY WITH THE REQUIREMENT OF THE CURRENT AUSTRALIAN STANDARDS,
1. TO FACILITATE THE FISH PASSAGE, THE CULVERT HAS BEEN DESIGNED AS FOLLOWS:
SPECIFICATIONS AND CODES 1. LEVEL ON DRAINAGE LONGITUDINAL SECTION REFERS TO THE LEVEL AT THE a. ELIMINATE STEPS AND DROPS IN ELEVATION ACROSS THE BED GRADIENT TO
2. ALL WORK SHALL BE CARRIED OUT IN COMPLIANCE WITH THE CURRENT QUEENSLAND WORKPLACE HEALTH AND STRUCTURE SETOUT POINT. PROVIDE A LEVEL FISH CROSSING TO AVOID THE NEED FOR FISH TO JUMP OVER
SAFETY ACT REGULATIONS AND GUIDELINES. 2. SETOUT POINTS UNLESS NOTED OTHERWISE ON DETAIL PLANS SHALL BE THE CENTRE AN OBSTRUCTION
3. ANY DISCREPANCY BETWEEN THESE DRAWING AND THE ABOVE MENTIONED DOCUMENTS SHALL BE REFERRED TO OF STRUCTURE. b. INSTALL THE CULVERT AT A MINIMUM OF 300mm BELOW THE BED LEVEL; AND
THE SUPERINTENDENT BEFORE PROCEEDING WITH ANY WORK. 3. THE FINISHED FOUNDATION FOR THE CULVERT BASE SLAB SHALL BE INSPECTED BY AN c. BACKFILL THE INVERT OF CULVERT WITH BED MATERIAL WON FROM THE SITE TO
4. NO SUBSTITUTE MATERIALS SHALL BE USED WITHOUT PRIOR WRITTEN APPROVAL OF THE SUPERINTENDENT. RPEQ QUALIFIED GEOTECHNICAL ENGINEER BEFORE PLACING OF BLINDING CONCRETE MAINTAIN AND SIMULATE NATURAL BED SURFACE
5. SETOUT COORDINATES / DIMENSION ARE TO BE CONFIRMED ON SITE BY THE CONTRACTOR PRIOR TO AND THE FOUNDATION REMEDIED AS THEY DIRECT. d. INSTALL A MINIMUM 1200mm WIDE CULVERT TO ALLOW FOR FISH PASSAGE
COMMENCEMENT OF WORKS. DRAWING SHALL NOT BE SCALED.
e. PROPOSED CULVERT INCREASES THE CELL CROSS-SECTIONAL AREA OF THE
6. IN SOME CASES THE DRAWING DEPICT THE INSTALLATION DIAGRAMMATICALLY. THE CONTRACTOR SHALL SET OUT ALL 4. REINFORCEMENT EXISTING CULVERT CONFIGURATION
WORK TO SUIT ACTUAL ON SITE DIMENSIONS. 4.1. DEFORMED BARS = GRADE D500N. Client:
f. POST CONSTRUCTION - ALL CULVERTS MUST BE KEPT CLEAR OF BLOCKAGES
7. THE CONTRACTOR SHALL BE AWARE OF ALL EXISTING STRUCTURES AND SERVICES WITHIN AND ADJACENT TO THE 4.2. ALL REINFORCING STEEL TO BE ACRS CERFIFIED. THE CONTRACTOR SHALL PROVIDE THROUGH A REGULAR INSPECTION PROGRAM
SITE OF THE WORKS AND SHALL BE RESPONSIBLE FOR ANY DAMAGE TO THESE SERVICES AND STRUCTURES DURING MANUFACTURER EVIDENCE OF COMPLIANCE BEFORE ANY REINFORCEMENT IS 2. IN ACCORDANCE TO DILGP SIGNIFICANT RESIDUAL IMPACT GUIDELINE SECTION 3.8,
THE COURSE OF THE CONTRACT. SUPPLIED TO THE PROJECT. THE FOLLOWING HAS BEEN INCORPORATED INTO THE CULVERT DESIGN :
8. THE SERVICES SHOWN ON THESE PLANS ARE PROVIDE FOR INFORMATION ONLY AND NO RESPONSIBILITY IS TAKEN 4.3. REINFORCING BAR LAPS: a. LARGER CELL CROSS-SECTIONAL AREA THAN EXISTING CULVERT
FOR THE ACCURACY OR COMPLETENESS OF THE INFORMATION SUPPLIED.
CONFIGURATION - TO PREVENT INCREASED WATER DEPTH UPSTREAM OF THE
9. THE EXTENT AND LOCATION OF EXISTING SERVICES SHOWN IN THESE PLANS ARE APPROXIMATE ONLY. EXACT
BARRIER WHICH CAN RESULT IN: LOSS OF IN-STREAM PLANTS, LEADING TO
LOCATION AND DEPTHS OF SERVICES ARE TO BE VERIFIED BY THE CONTRACTOR PRIOR TO CONSTRUCTION. THE MINIMUM SPLICING LENGTHS, UNLESS NOTED OTHERWISE
REDUCED FOOD SUPPLY OR LOSS OF BREEDING HABITAT
CONTRACTOR SHALL LIASE WITH THE SERVICE AUTHORITIES TO CONFIRM LOCATION AND TO DETERMINE ANY
REQUIREMENTS FOR PROTECTION, SUPPORT OR RELOCATION OF AFFECTED SERVICES.
BAR SIZE
MINIMUM LAP LENGTH
N12
390
N16
600
N20 N24 N28 N32
820 1060 1320 1590
b. PROPOSED CULVERT CELL HAS BEEN ADOPTED TO PROVIDE EQUAL OR BETTER
FISH PASSAGE FOR THE WATERWAY
ERICSSON
10. CONTRACTORS TO LIAISE WITH THE RELEVANT SERVICES AUTHORITY FOR THE COORDINATION OF SHUTDOWN AND
c. THE WATERWAY BED IS RETAINED WITH NATURAL SUBSTRATE COMPARABLE TO
CONNECTION TO THE EXISTING SERVICES.
THE NATURAL SUBSTRATE SIZE AND CONSISTENCY
11. ALL PRODUCTS AND MATERIALS ARE TO BE MANUFACTURED TO THE APPLICABLE AUTRALIAN STANDARD OR PROJECT GRASS / TURF REINSTATEMENT d. DURING AND AFTER CONSTRUCTION, THE WORKS WILL BE UNDERTAKEN AS PER
SPECIFICATION AS APPLICABLE. CONTRACTOR TO PROVIDE TEST CERTIFICATES FOR ALL MATERIAL AS PER THE
THE REQUIREMENTS OF WWBW01 PART 3 SECTION 5.1. Client:
SPECIFICATION. GRASSED SURFACES WITHIN THE AREA ARE TO BE REINSTATED. THIS INCLUDES NOT
3. CULVERT CELLS ARE DESIGNED TO EXTEND 100 PER CENT OF THE MAIN CHANNEL
12. ALL CONSTRUCTION MATERIALS AND WORKMANSHIP SHALL BE IN ACCORDANCE WITH THE RELEVANT SPECIFICATION ONLY THE AREA DIRECTLY AFFECTED BY EXCAVATION FOR THE STORMWATER UPGRADE
WIDTH AND THE CROSSING INCORPORATES AT LEAST ONE (BOX) CULVERT WITH A
FOR THE WORKS TOGETHER WITH THE REQUIREMENTS OF ALL THE RELEVANT CODES OF PRACTICE REFERRED TO WORKS BUT ALSO AREAS OF THE SITE ACCESSED BY HEAVY VEHICLES OR AREAS USED
MINIMUM WIDTH OF 1200MM IN ACCORDANCE WITH WWWBW01 PART 3 FOR AMBER
THEREIN AND THE REQUIREMENTS OF THE STATUTORY AUTHORITIES WHERE APPLICABLE. FOR STORAGE OF EXCAVATED OR OTHER MATERIALS, OR SITE COMPOUNDS.
WATERWAYS.
13. ALL LOCATIONS, ORIENTATION AND LEVELS SHALL BE VERIFIED ON SITE BEFORE COMMENCING ANY WORK,
4. CULVERT CROSSING ARE INSTALLED AT THE GRADIENT OF THE EXISTING WATERWAY
DISCREPANCIES SHALL BE REFERRED TO THE DESIGN MANAGER.
BED.
14. DRAINLINE LEVELS MUST BE CHECKED FOR CONFLICT WITH SERVICES AND CONFLICTS RESOLVED WITH THE DESIGN
5. PRIOR TO UNDERTAKING THE WORKS, THE CONTRACTOR SHALL PREPARE A
MANAGER.
CONSTRUCTION ENVIRONMENTAL CONTROL PLAN (CEMP) FOR APPROVAL,
15. DO NOT OBTAIN DIMENSIONS BY SCALING DRAWINGS
IDENTIFYING RISKS AND MANAGEMENT OF THESE RISKS DURING CONSTRUCTION,
16. NATURAL SURFACE LEVELS ON THE DRAWINGS ARE INDICATIVE ONLY.
INCLUDING ASSOCIATED EROSION AND SEDIMENT CONTROL/PROTECTION REQUIRED.
17. ALL DIMENSION, LENGTHS ETC. ARE IN METRES UNLESS NOTED OTHERWISE
6. PERIODIC INSPECTIONS SHALL BE CARRIED OUT FOR THE LIFE OF CULVERT CROSSING
18. ALL LEVELS ARE IN METRES TO AHD.
IN ACCORDANCE WITH CODE (WWWBW01 PART 3) REQUIREMENTS BY THE OWNER OF
THE ASSET.
PIPES AND CULVERTS Project:
7. STORMWATER QUALITY:
a. IMPACTS ON WATER QUALITY DURING CONSTRUCTION WILL BE MINIMISED BY
1. RCP = REINFORCED CONCRETE PIPE
2. RCBC = REINFORCED CONCRETE BOX CULVERT
UNDERTAKING WORKS SET OUT IN THE BEST PRACTICE EROSION AND SEDIMENT NATIONAL BROADBAND
CONTROL GUIDELINES 2008
3.
4.
ALL PIPES AND CULVERTS SHALL HAVE A 100 YEAR DESIGN LIFE.
ALL BOX CULVERT LENGTHS ARE MULTIPLES OF 1.2M AND PIPE CULVERT LENGTH ARE MULTIPLE OF 2.44M.
b. PRIOR TO UNDERTAKING THE WORKS, THE CONTRACTOR SHALL PREPARE A NETWORK
CONSTRUCTION ENVIRONMENTAL CONTROL PLAN (CEMP) FOR APPROVAL,
5. ALL BOX CULVERT AND PIPE SIZES ARE IN MILLIMETRES.
IDENTIFYING RISKS AND MANAGEMENT OF THESE RISKS DURING CONSTRUCTION,
6. RCBC/SLBC REINFORCED CONCRETE HEADWALLS SHALL BE CONSTRUCTED IN ACCORDANCE WITH.
INCLUDING ASSOCIATED EROSION AND SEDIMENT CONTROL/PROTECTION
7. GENERAL ARRANGEMENT AND INSTALLATION OF PRECAST UNITS FOR RCBC'S SHALL BE IN ACCORDANCE WITH TMR
STANDARD DRAWING 1316 AND 1318.
REQUIRED. COOROIBAH
c. THE CULVERT IS RECESSED INTO THE NATURAL BED AS SHOWN AND IS THEN
8. CONSTRUCTION OF REINFORCED CONCRETE WINGWALLS AND APRONS FOR FRC/RCP'S SHALL BE IN ACCORDANCE
BACKFILLED WITH BED MATERIAL COMPARABLE TO THE NATURAL SUBSTRATE
WITH TMR STD DRG 1303 WITH CUT OFF WALL.
SIZE AND CONSISTENCY TO MINIMISE IMPACT ON WATER QUALITY
9. THE GEOTECHNICAL ENGINEER SHALL CARRY OUT INSPECTION OF SITU MATERIAL UNDER CULVERTS AND THE
8. HYDRAULIC CONDITIONS OVER THE BARRIER WILL ALLOW FOR FISH PASSAGE:
PRESENCE OF ACID SULPHATE SOIL (ASS). UNSUITABLE MATERIAL IS TO BE REMOVED AND BACKFILLED WITH
a. CULVERT CROSSING IS INSTALLED AT NO STEEPER GRADIENT THAN THE
APPROVED MATERIAL IF DIRECTED.
WATERWAY BED GRADIENT TO LIMIT VELOCITY INCREASES THROUGH THE
10. BATTER SLOPES IN THE VICINITY OF BOX CULVERTS/PIPE INLET/OUTLETS MUST BE LOCALLY SHAPED SO THAT
CULVERT AS FISH CAN ONLY SWIM AGAINST RELATIVELY LOW VELOCITIES
BATTERS DO NOT PROTRUDE IN FRONT OF WINGWALLS/APRONS MAXIMUM LOCAL SLOPES OF 1:1 MAY BE USED FOR
b. LARGER CELL CROSS-SECTIONAL AREA THAN EXISTING CULVERT
1M MAX HEIGHT, BUT MUST BE PROTECTED USING ROCK MATTRESS DESIGN BATTER SLOPE IS ACHIEVED.
CONFIGURATION - TO PREVENT INCREASED WATER DEPTH UPSTREAM OF THE
11. ALL PIPE/BOX CULVERT EXTENSIONS WILL BE ON SAME GRADE AND ALIGNMENT AS EXISTING UNLESS NOTED
BARRIER WHICH CAN RESULT IN: LOSS OF IN-STREAM PLANTS, LEADING TO
OTHERWISE.
REDUCED FOOD SUPPLY OR LOSS OF BREEDING HABITAT
12. INSTALLATION, BEDDING AND FILLING/BACKFILLING AGAINST/OVER CULVERTS SHALL BE IN ACCORDANCE WITH TMR
c.
STD DRG NO. 1359.
01 21.12.16 PRELIMINARY ISSUE
Rev Date Revision Details
Aurecon Australia Pty Ltd ABN 54 005 139 873
DESIGNER: A.O.H
CHECKED: CS
APPROVED: LS
Drawing Title:
Drawing No. Revision
01
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Appendix C – Photographs
Photo 1 – Existing culvert crossing
10
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Appendix C — Photographs
Photo 1 — Existing culvert crossing
10
Page 20
Photo 2 – Existing culvert crossing
11
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Photo 2 — Existing culvert crossing
14
Page 21
Photo 3 – Waterway
12
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Photo 3 — Waterway
12
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Photo 4 – Waterway
13
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Photo 4 — Waterway
13