Work no- 19 Ghaziabad Simantargart Rainwater Harvesting Ke Adhisthapan Ka Karya

Rainwater Harvesting Structure —Precast RCC Ring Based Recharge Pit (6 Cum), Including Recharge Bore Providing, constructing, and installing a complete Rainwater Harvesting (RWH) structure of 6 cubic meters capacity using precast RCC rings, including all associated civil, filtration, and plumbing components. The work includes: > Excavation of pit of required size, including shoring, trimming, leveling, and safe disposal of surplus earth. > Providing and placing precast RCC rings (minimum M30 grade, tongue-and-groove or equivalent jointing system) to achieve required depth and > storage/recharge volume. > Laying PCC (M10) base of minimum 100–150 mm thickness and preparing a stable foundation. > Providing internal filter media layers (coarse sand, gravel, aggregates) as per approved grading and thickness. > Providing and fixing inlet pipeline, silt trap chamber, first-flush arrangement, inspection chamber, and overflow pipeline with required UPVC/HDPE fittings. > Providing & installation of recharge bore 150-200 mm dia, upto 15-30 mtr depth using rotary/auger method including well screens & casing of approved class. > Providing RCC/FRP cover slab, manhole frame, mosquito-proof vents, and safety features. > Backfilling around the structure with approved earth/sand and compacting in layers. > Restoring the site surface (pavers, tiles, soil, landscaping, etc.) to original condition. > Testing, commissioning, and submission of geotagged photos, as-built drawings, and documentation. > All labour, materials, tools, machinery, transportation, and safety provisions complete as required.

Rainwater Harvesting Structure — PPP Modular (Polypropylene) Based Recharge Pit (5 Cum), Including Recharge Bore Providing, fabricating, and installing a 5 cubic meter capacity Rainwater Harvesting recharge pit using high‑strength polypropylene (PPP) modular crates, including all allied works. The work includes: > Excavation of pit to the required dimensions, including trimming, leveling, shoring (if required), and disposal of excavated material. > Supplying and installing UV‑stabilized polypropylene modular crates (minimum 90% void ratio), assembled as per manufacturer’s guidelines to achieve required recharge volume. > Wrapping the entire crate assembly with non‑woven geotextile fabric (minimum 200 gsm) on all sides, properly secured to prevent soil ingress. > Providing suitable base preparation with compacted coarse sand/aggregate bedding layer. > Providing inlet pipeline, silt trap, first‑flush unit, connecting manifolds, and inspection ports. > Providing appropriate pipe connections using UPVC/HDPE pipes and fittings, including elbows, tees, couplers, saddles, etc. > Providing & installation of recharge bore 150-200 mm dia, upto 15-30 mtr depth using rotary/auger method including well screens & casing of approved class. > Providing necessary top cover (soil, pavers, lightweight slab, etc.) depending on load conditions. > Backfilling with sand/earth around the pit and restoring surroundings to original condition. > Testing percolation performance and submitting all documentation including geotagged photographs. > All labour, materials, tools, machinery, and safety measures complete as directed.

Rainwater Harvesting Structure – Plastic Aluminium Composite (PAC) Sheet Based Recharge Pit (4 Cum Capacity) Providing and installing a 4 cubic meter capacity recharge pit using Plastic Aluminium Composite (PAC) sheets as lining material, complete with all accessories. The work includes: > Excavation of pit to required size and depth, including dressing, leveling, and safe disposal of surplus earth. > Fabricating and installing PAC sheet panels (as per approved thickness/specification) to form a self-supporting lining structure with necessary ribs, stiffeners, and fasteners. > Lining the interior with approved filter media layers (coarse sand, gravel, aggregates) in correct sequence and thickness. > Placing non‑woven geotextile fabric behind PAC sheets (where required) to prevent soil migration. > Providing inlet connections, silt trap, first-flush mechanism, inspection chamber, and overflow arrangement with suitable UPVC/HDPE piping and fittings. > Providing & installation of recharge bore 150-200 mm dia, upto 15-30 mtr depth using rotary/auger method including well screens & casing of approved class. > Installing RCC/FRP/paver block top cover with lockable access as per load‑bearing requirement. > Providing mosquito-proofing, ventilation openings, and protective sealings for all joints and corners. > Backfilling with selected material and restoring the surface to original condition. > Carrying out functional testing of percolation and submitting as-built documents and geotagged photos. > All labour, materials, tools, machinery, equipment, and safety arrangements complete in all respects.