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Pre-Pour Checklist

25-point gate before concrete leaves the mixer — rebar, formwork, joints, materials, weather, plant and paperwork.

Pre-Pour Checklist — 25-point clipboard with hold-point stamps
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ConcreteInfo — Pre-Pour Checklist
IS 456:2000 Cl 11, 13 · IS 14687 · IS 3558
Project: ______________
Format ref: CI-PRE-POUR-CHECK
Page ____ of ____

Pre-Pour Checklist

IS 456:2000 Cl 11, 13 · IS 14687 · IS 3558

25-point gate before concrete leaves the mixer — rebar, formwork, joints, materials, weather, plant and paperwork.

  • Rebar diameter, spacing & count match drawing revision noted
  • Cover blocks/spacers correct size & spacing (Table 16 values)
  • Laps staggered; lap lengths per approved BBS
  • Stirrup hooks 135° with 10φ extension in seismic zones (IS 13920)
  • Chair spacing adequate for top steel (slabs/footings)
  • Formwork geometry, lines & levels within IS 14687 tolerances
  • Formwork supports/props computed & braced (no reuse of damaged members)
  • Release agent applied, not on rebar
  • Formwork joints sealed against grout loss
  • Construction joint surface: laitance removed, roughened, wetted (Cl 13.4)
  • Stop-ends/key joints positioned per drawing
  • Embedments, sleeves, insert plates fixed & verified
  • Water stops positioned & clamped
  • Electrical/plumb crossings closed out
  • Mix design approved & valid for grade/exposure
  • Cement/SCM test certs current (within validity)
  • Aggregate moisture tested; batch weights corrected
  • Admixture chloride content declared (IS 9103 Cl 1.3)
  • Batching plant/scales calibration valid
  • Transit-time limit agreed; route clear
  • Vibrators + standby available (IS 3558 immersion practice)
  • Placement equipment (pump/tremie/chute) ready; free fall ≤ 1.5 m arrangement
  • Weather screened: placement ≤ 40 °C; evaporation ≤ 1.0 kg/m²/h; night pour window if hot
  • Curing materials (hessian/compound/ponding) on site before start
  • Cube moulds, ID labels, sampling plan ready (Cl 15.2)

Note: No line on this list may be signed on trust — each is either evidenced or it stays open.

Blank register for site use. Acceptance criteria cited from the Indian Standards named above — align with your project specification before contractual use.

Code references & rights: Indian Standards are the property of the Bureau of Indian Standards (© BIS) — official PDFs at bis.gov.in. Shared in good faith as technical reference for the civil engineering fraternity — always verify against the official publication.