Landcom Book 4 Maintenance - WSUD

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Water Sensitive Urban Design Bioretention Basin Sign-Off Forms Development stage: Bioretention basin ID: Pre-Start Construction Meeting Location: Date: List of Attendees Name Discipline (suggested) Company 1 Developer 2 Site superintendent (civil) 3 Site superintendent (landscape) 4 Civil Contractor 5 Landscape Contractor 6 WSUD - Design Engineer 7 Civil Engineer 8 Landscape Architect 9 Checklist of Sign-Off Forms Sign-Off Form Date Completed Form A Form B Form C Form D Earthworks and Hydraulic / Functional Structures Erosion and Sediment Control Filter Material and Finished Levels Landscape Planting (Macrophyte and Inlet Zone) Construction Tolerances: The construction tolerances on the bioretention systems are to be: •• plus or minus 50 mm on earth works and filter media levels. •• plus or minus 25 mm on hydraulic structures (e.g. pit and weir crests/ bund heights, pipe and pit invert levels) Deviations to be approved only at the discretion of superintendent. 50 Book 4 | MAINTENANCE
Water Sensitive Urban Design Form A - Earthworks and Hydraulic / Functional Structures Purpose: 1) To ensure bulking out, trimming and profiling is in accordance with design specifications (including allowance for 300 mm topsoil and a minimum 300 mm of impervious liner where required). 2) To ensure hydraulic structures associated with the bioretention basin are constructed in accordance with the design specifications. Checklist: Items Checked Satisfactory Action/s (if required) Actions addressed (initial) Bulking out & hard structures As constructed survey of basin base and surrounding bunds, pit crests, inlet and outlet pipes Base levels are at correct elevation, given the minimum allowances for topsoil and impervious liner (where required) Base at correct grading (0.5 percent) Hold Point - Sign off is required from superintendent and bioretention basin designer before proceeding Bunds and impervious liner Laboratory test results of liner material submitted and adequate Delivery docket of liner material submitted and adequate Delivery docket of liner material supplied Geotechnical engineer certification of in-situ compaction or liner placement Geotechnical engineer certification / sign off of key bunds Book 4 | MAINTENANCE 51
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Landcom Book 4 Maintenance - WSUD

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