| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. SCOPE & REFERENCES | |||
| A1 | Scope defined: pile type (bored/driven), diameter, length, load capacity, number of piles Acceptance: Pile schedule prepared; co-ordinates, cut-off level, toe level, design capacity listed | Cl. 1 — Scope | OK NC NA HOLD |
| A2 | References: IS 2911, IS 14593 (rock socketing), IS 5121 (safety), GFC drawings, soil report Acceptance: Approved drawings, pile design calculations, geotechnical report available on site | Cl. 2 — References | OK NC NA HOLD |
| A3 | Initial/trial pile load test completed per IS 2911 Part 4 before production piling Acceptance: Test load = 2.5× safe working load; settlement limits met; certificate issued by consultant | Cl. 7 (Part 4) — Initial load test | OK NC NA HOLD |
| B. MATERIALS & EQUIPMENT | |||
| B1 | Piling rig mobilised: hydraulic rotary/DMC rig with adequate torque; calibration certificate valid Acceptance: Rig capacity suits pile dia/depth; operator licensed; daily maintenance log maintained | Cl. 5 (Part 1) — Equipment | OK NC NA HOLD |
| B2 | Concrete M35 design mix approved; minimum OPC 400 kg/m³; slump 150-180 mm for tremie Acceptance: Mix design approved; slump at pour 150-180 mm; 6 cubes per pile cast for testing | Cl. 6.5 (Part 1) — Concrete quality | OK NC NA HOLD |
| B3 | Reinforcement cage fabricated per BBS; spacers, chairs, helical ties per drawing Acceptance: Cage dimensions ±25 mm; cover 75 mm; spacers at 2 m c/c; lifting hooks provided | Cl. 6.4 (Part 1) — Reinforcement | OK NC NA HOLD |
| B4 | Bentonite/polymer slurry prepared; density, viscosity, pH tested before use Acceptance: Density 1.03-1.10 g/ml; Marsh viscosity 30-50 sec; pH 9.5-12; sand content <4% | Cl. 6.2 (Part 1) — Stabilising fluid | OK NC NA HOLD |
| C. SITE PREPARATION / PRE-REQUISITES | |||
| C1 | Working platform levelled, compacted; min 300 mm PCC/granular for rig stability Acceptance: Platform CBR >5%; compacted granular ≥300 mm; no soft/saturated areas | Cl. 6.1 (Part 1) — Working platform | OK NC NA HOLD |
| C2 | Pile points surveyed and marked; reference pegs offset from pile centre for check Acceptance: Co-ordinates verified; offset pegs at 1.5 m; tolerance ±50 mm joint-signed | Cl. 6.3 (Part 1) — Setting out | OK NC NA HOLD |
| C3 | Underground utilities cleared; overhead clearance for rig mast confirmed (min 3 m from HT lines) Acceptance: Utility drawings verified; NOC obtained; electrical clearance per IE Rules | Cl. 4 — Safety clearances | OK NC NA HOLD |