This drainage quality inspection checklist supports civil works projects by documenting site details, drawings, drainage type and materials, and key quality checks. It covers trench safety and alignment, pipe bedding material and depth, pipe size and material verification, gradient and invert levels, and laying direction. Testing options include air or water tests. Manhole position, construction, inverts, and branch counts are verified, followed by visual inspections. Backfill requirements address surround and bedding materials, fibre board at concrete joints, and compaction. Includes principal contractor acceptance and sign off.
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