Original source · versioned page text
16-003302-3700(A)
From the archive 16-003302- Proposed Stage 3 Plans.zip, inside Operational Works Application OPW16/0345. File date in the archive: 2016-12-23 11:13.
DocuSign Envelope ID: 69D49415-881C-4D35-BC9B-DE8DA1B3BB93
BIO RETENTION BASIN CONSTRUCTION SEQUENCE NOTES: BIO RETENTION INSTALLATION NOTES:
THE CONSTRUCTION AND ESTABLISHMENT OF BIO RETENTION BASINS IS TO BE STAGED AS FOLLOWS: THE PLACEMENT OF DRAINAGE, TRANSITION AND FILTER MEDIA
1. FUNCTIONAL INSTALLATION - ONCE THE MAJORITY OF THE SUBDIVISION WORKS ARE COMPLETE, THE BASIN LAYERS MUST BE UNDERTAKEN CAREFULLY TO ENSURE CORRECT C.I. CAP. EXTEND CAP TO
CONSTRUCTION INCLUDING EARTHWORKS, INLETS, OUTLET STRUCTURES, SUBSOIL DRAINAGE, TRANSITION DEPTH, SLOPE AND COMPACTION: APPROX. 50-100mm ABOVE
LAYERS, FILTER MATERIAL, PROTECTIVE LAYERS AND EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE DEPTH: FILTER MEDIA SHOULD BE INSTALLED AND COMPACTED IN TWO 200m W x 150m D CONCRETE EPOXY SADDLE JOINT
BIORETENTION SURFACE. SCREW
UNDERTAKEN BY THE CIVIL CONTRACTOR. THE FILTER MEDIA WITHIN THE BIO RETENTION BASIN IS TO BE LIFTS FOR DEPTHS OVER 500mm. SURROUND TO CLEANOUT RISER TO TRUNK MAIN FILTER MEDIA LOAM -
CAP FIXED USING 3 SCREWS
COVERED WITH A PROTECTIVE GEOFABRIC LAYER (BIDIM A12 OR EQUIVALENT), THEN COVERED WITH 75mm OF SLOPE: THE TOP SURFACE OF THE DRAINAGE LAYER, TRANSITION 400mm DEPTH CONSISTENT WITH
TOPSOIL AND TURFED OR GRASS SEEDED TO THE SATISFACTION OF COUNCIL. SILT FENCES ARE TO BE ERECTED LAYER AND FILTER MEDIA LAYER SHOULD BE FLAT. A SPREADER BAR CURRENT FAWB SPECIFICATIONS.
AROUND THE OUTSIDE OF THE BASIN. ACCEPTANCE OF THE COMPLETED SUBDIVISION WORKS ON AND OFF SHOULD LEVEL THE SURFACE OF EACH LAYER. 150Ø SUBSOIL DRAIN CLEANOUT FILTER MEDIAN PARTICLE DIA
MAINTENANCE BY COUNCIL IS TO EXCLUDE THE PROTECTIVE LAYERS WITHIN THE BIO BASINS. COMPACTION: THE FILTER MEDIA MUST BE LIGHTLY COMPACTED - PVC PIPE (NON SLOTTED) AND 0.45m MIN. HYDRAULIC
2. BUILDING CONSTRUCTION - THE PROTECTIVE GEOFABRIC AND GRASS LAYER AND THE EROSION AND SEDIMENT DURING INSTALLATION TO PREVENT THE MIGRATION OF FINE CONNECTOR CLEANOUTS AT HEAD CONDUCTIVITY 200mm/hr
CONTROL MEASURES ARE TO REMAIN IN PLACE DURING THE BUILDING CONSTRUCTION PHASE. THE BUILDING PARTICLES. THIS CAN BE ACHIEVED WITH A SINGLE PASS OF A LIGHT OF SUBSOIL DRAIN AND AS
CONSTRUCTION PHASE IS TO BE THE TIME FOR COMPLETION OF 80% OF THE BUILDING CONSTRUCTION AND SITE ROLLER SUCH AS A DRUM LAWN ROLLER. A VIBRATING PLATE CAN SHOWN ON PLAN
ESTABLISHMENT WORKS ON ALLOTMENTS OR 12 MONTHS FOLLOWING COMPLETION OF THE SUBDIVISION WORKS, ALSO BE USED TO COMPACT SMALL BIO RETENTION SYSTEMS OR COARSE SAND TRANSITION
WHICHEVER IS SHORTER. THE MAINTENANCE OF THE BASINS INCLUDING INLETS, OUTLETS AND EROSION AND 'POZITRACK' BOBCATS CAN BE USED FOR LARGE SYSTEMS. ENSURE GRAVEL DRAINAGE LAYER LAYER - 100mm DEPTH
SEDIMENT CONTROL MEASURES IS TO BE UNDERTAKEN BY THE CIVIL CONTRACTOR FOR THE DURATION OF THE ONLY ONE COMPACTING PASS IS MADE OVER THE MEDIA FOR LIGHT - DEPTH 200mm. (NO FINES) (1mm PARTICLE DIA.)
BUILDING CONSTRUCTION PHASE. COMPACTION. 5-7mm AGGREGATE
3. OPERATIONAL ESTABLISHMENT - FOLLOWING COMPLETION OF THE BUILDING CONSTRUCTION PHASE, THE TURF, PROVIDE BIDUM A12 OR
TOPSOIL AND PROTECTIVE GEOFABRIC IS TO BE REMOVED AND THE BASIN RE-PLANTED WITH VEGETATION AND ROCK ARMOURING NOTES: EQUIVALENT TO EXTENTS
LANDSCAPING AS PER THE LANDSCAPE DESIGN DRAWINGS. WORKS UNDERTAKEN FOR OPERATIONAL 1. ROCKS TO BE DURABLE BLUE STONE OR OTHERWISE APPROVED BY SMOOTH WALLED SLOTTED PVC
ESTABLISHMENT ARE TO BE UNDERTAKEN BY OTHERS AND WILL BE SUBJECT TO A SEPARATE ACCEPTANCE BY SUPERINTENDENT. PIPE- MIN 0.5% GRADE AND MAX
COUNCIL FOR ON AND OFF MAINTENANCE. COLLECTOR PIPE
2. EACH ROCK SHALL BE: 1.5m SPACINGS
4. IN-SITU INFILTRATION TEST - AN IN-SITU INFILTRATION TEST WILL BE REQUIRED PRIOR TO ON-MAINTENANCE BEING - ANGULAR IN SHAPE (PROMOTES INTERLOCKING)
GRANTED BY COUNCIL. THE TEST WILL NEED TO ACHIEVE AN AVERAGE RATE OF 180mm/h INFILTRATION (WITHIN - FREE FROM OVERBURDEN, SPOIL, SHALE AND BIO RETENTION BASIN SUBSOIL DRAIN
APPROPRIATE TOLERANCES) WITH AT LEAST 4 SAMPLE LOCATIONS AROUND THE BASIN. ANOTHER IN-SITU
INFILTRATION TEST WILL BE REQUIRED FOR OFF-MAINTENANCE.
ORGANIC MATERIAL. CLEANOUT AND FILTER MEDIA SPECIFICATIONS
3. NEITHER BREADTH NOR THICKNESS OF A SINGLE ROCK SHALL BE SCALE: NTS
LESS THAN ONE HALF ITS LENGTH (ie THE ROCK SHALL BE CHUNKY
RATHER THAN FLAT).
BIO RETENTION PARTICLE SIZE DISTRIBUTION AND PROPERTIES GUIDE: 4. ROCKS TO BE PLACED AND INTERLOCKED INTO POSITION AND BUILT
0.40m
SOURCE: (BIOFILTRATION MEDIA GUIDELINES (VERSION 3.01), PREPARED BY THE FACILITY FOR ADVANCING WATER UP TO FINAL LEVELS SHOWN, ENSURING COVERAGE OF GEOFABRIC.
FILTER MEDIA LOAM
BIOFILTRATION (FAWB), JUNE 2009.) & (BIO-RETENTION TECHNICAL DESIGN GUIDELINES (VERSION 1) PREPARED BY 5. GAPS BETWEEN THE ROCKS ARE TO BE FILLED BY DROPPING SMALL
'WATER BY DESIGN' (OCTOBER 2012) ROCKS INTO GAPS AND LOCKING INTO POSITION WITH A CROWBAR.
COARSE SAND TRANSITION
6. ALL ROCKWORK TO BE PLACED OVER BIDIM A24 OR EQUIVALENT.
MATERIAL COMPOSITION RANGE GUIDE: 7. FOR ROCK SIZED SPECIFIED AS D50 ON THE DRAWINGS, THIS GRAVEL DRAINAGE LAYER
0.10m
CLAY AND SILT <3% (<0.05mm) CORRESPONDS TO THE MEDIAN DIAMETER OF WHICH HALF OF THE
0.20m
VERY FINE SAND 5-30% (0.05-0.15mm) ROCK SIZES SHALL BE GREATER AND HALF OF THEM SHALL BE
FINE SAND 10-30% (0.15-0.25mm) SMALLER. THE ROCK SHALL BE WELL GRADED AND HAVE A
MEDIUM TO COARSE SAND 40-60% (0.25-1.0mm) MAXIMUM SIZE NO GREATER THAN 30% AND A MINIMUM SIZE NO
COARSE SAND 7 -10% (1.0-2.0mm) LESS THAN 30% SMALLER THAN D50. FOR EXAMPLE IF D50 = 400mm IS CLEANOUT AND FILTER MEDIA SPECIFICATIONS
FINE GRAVEL <3.0% (2.0-3.4mm) SPECIFIED, THE EQUIVALENT ROCK DIAMETER RANGES FROM 280 to SCALE: 1:20(A1)
520mm.
WHILE TOTAL CLAY AND SILT CONTENT OF 3% IS RECOMMENDED, A CLAY AND SILT CONTENT UP TO 6% IS
ACCEPTABLE PROVIDED:
· THE SATURATED HYDRAULIC CONDUCTIVITY IS BETWEEN 100mm/hr & 300mm/hr AND
· THE REMAINING MATERIAL MEETS THE COMPOSITION RANGE SPECIFIED ABOVE.
TURF REINFORCED WITH ENKAMAT OR APPROVED
SOIL SPECIFICATIONS: EQUIVALENT INSTALLATION NOTES:
· TOTAL NITROGEN CONTENT - <1000mg/kg 1. PREPARE AND COMPACT BASE SURFACE. EXCAVATE ANCHOR
· ORTHOPHOSPHATE CONTENT - <80mg/kg SOILS WITH TOTAL PHOSPHORUS CONCENTRATIONS >100mg/kg SHOULD TRENCHES AT TOE AND SHOULDER OF BANK, TO BE BACKFILLED
BE TESTED FOR POTENTIAL LEACHING. WHERE PLANTS WITH MODERATE PHOSPHORUS SENSITIVITY ARE TO BE AFTER LAYING TURF.
USED, TOTAL PHOSPHORUS CONCENTRATIONS SHOULD BE <20mg/kg) 2. LAY ENKAMAT OR APPROVED EQUIVALENT AND PIN TO
· ORGANIC MATTER CONTENT - AT LEAST 3% (w/w). AN ORGANIC CONTENT LOWER THAN 3% IS LIKELY TO HAVE MANUFACTURERS SPECIFICATIONS.
TOO LOW A WATER HOLDING CAPACITY TO SUPPORT HEALTHY PLANT GROWTH. IN ORDER TO COMPLY WITH 3. LAY TOPSOIL AND PLACE TURF. SAFETY FENCE TO
BOTH THIS AND THE TOTAL NITROGEN AND ORTHOPHOSPHATE CONTENT REQUIREMENTS, A LOW NUTRIENT LANDSCAPE
ORGANIC MATTER WILL BE REQUIRED. ARCHITECTS DETAIL. REFER DRG. 16-003302-3....
· pH - AS SPECIFIED FOR 'NATURAL SOILS AND SOIL BLENDS' 5.5-7.5 (pH 1:5 IN WATER) FOR FURTHER ROCK
· ELECTRICAL CONDUCTIVITY - AS SPECIFIED FOR 'NATURAL SOILS AND SOIL BLENDS' <1.2 dS/m. BOULDER WALL DETAILS
300mm
PERMEABLE
GEOTEXTILE
MEMBRANE
GRANULAR FILL
TEMP. PONDING LEVEL
100Ø AG PIPE
PROVIDE 300mm THICK CONCRETE 1 BASIN SL: 98.00m AHD
0.15m MIN ALL AROUND
INFILL ENDWALL AROUND PIPE 4
NO FINE CONCRETE
BASE OF
m
300m BIO RETENTION
FILTER MATERIAL
300mm
1.0m WIDE, 0.45m DEEP, 0.20m
THICK CONCRETE (SL81 MESH
CENTRAL) SUPPORT UNDER PIPE
TYPICAL OUTLET THROUGH ROCKWALL DETAIL BIOPOD TYPICAL RETAINING WALL SECTION
SCALE: N.T.S.
SCALE 1:50 (A1)
N.S.C. REF NO. MCU15/0111 & REC15/0031
DRAWN STATUS SCALE CLIENT PROJECT DRAWING TITLE
REVISION DATE ISSUE DETAILS DRAWN DESIGN
1 21.12.16 ORIGINAL ISSUE HT BF FOR APPROVAL PALM LAKE WORKS PTY LTD PALM LAKE RESORT STORMWATER QUALITY
2 NOT FOR CONSTRUCTION STAGE 3
3 1:250 5 0 5 10 A1 NOTES & DETAILS
4 DESIGN APPROVED 1:500 A3 19 TRADING POST ROAD - COOROY
5 ANDREW McPAIL RPEQ 6921 PROJECT No. DRAWING No. REVISION
6 DISCLAIMER
7
C 2015 www.calibreconsulting.co
ALL DIMENSIONS TO BE CHECKED ON SITE BY CONTRACTOR PRIOR TO
CONSTRUCTION. USE WRITTEN DIMENSIONS ONLY, DO NOT SCALE.
16-003302 3700 A
8 FOR & ON BEHALF OF CALIBRE CONSULTING (QLD) PTY LTD
See the original
The page text is free to read. Viewing or downloading an original file needs an account.
Log in to see the originalSearchable page text hides email addresses. Original files are unchanged and may show email addresses.