| S.No. | Field / Checkpoint | Reference | Status |
|---|---|---|---|
| A. DAILY POUR ENTRIES | |||
| A1 | Date + element + grade + volume + cube IDs Acceptance: All pours logged | Daily log | OK NC NA |
| A2 | RMC supplier + truck count + total m³ Acceptance: Reconciled with bills | Tally with delivery challans | OK NC NA |
| A3 | Slump + cube results (link to test log) Acceptance: Traceable | Cross-referenced | OK NC NA |
| B. MONTHLY SUMMARY | |||
| B1 | Total m³ per grade + per element type Acceptance: Tally with BOQ qty for billing | Aggregated | OK NC NA |
| B2 | Open NCRs from failed cubes Acceptance: Closure progress | Tracked separately | OK NC NA |
Concrete is the most consequential trade on every Indian RCC project — once poured, defects are nearly impossible to fix without demolition. The Daily Concrete Pour Register is the per-pour record that captures every fact about a concrete placement event: location, time, volume, grade, slump, batch ticket, cube samples, temperature, curing start.
This register is the audit trail when concrete fails strength tests (cube < specified) — the engineer traces back: which RMC batch? what mix design? was placement within 30 minutes of batching? what was ambient temperature? was vibration adequate? Without this register, root-cause analysis is impossible; concrete is rejected and demolished blindly.
Per-pour entry: - Pour ID + member reference (Column C-15 / Slab S-4 / Beam B-12) - Date + start time + completion time - Concrete grade (M20 / M25 / M30 / M35 / etc.) - Volume placed (m³) - Source: RMC (with plant name + delivery slip numbers) or site-mixed - Mix design reference - Slump test results (per IS 1199 Part 2) — typical specification 75 ± 25 mm - Cube samples taken: 6 cubes (3 for 7-day, 3 for 28-day) per IS 456 Cl. 16.1 - Cube IDs for later strength tracking - Ambient temperature + weather - Curing method + start time - Placement crew + supervisor - Sign-off by site engineer + PMC + (for premium / structural) structural consultant
Linked documents: batch tickets attached; cube test certificate cross-referenced when received.
1. No cube sampling — IS 456 Cl. 16.1 mandates 6 cubes per 50 m³ (or part thereof) per grade per shift. Sites that skip cubes have no strength compliance evidence.
2. Cube ID confusion — cubes not labelled per pour; on testing day, can't correlate to which pour the cubes belong. The register's cube ID column prevents this.
3. Wrong slump for placement — slump too low (< 50 mm) for slab pour → poor compaction; too high (> 100 mm) for vertical members → segregation. Register's slump value flags issues.
4. Placement > 30 min after batching — concrete loses workability + strength after batch time + 30 min (extended only with retarder). Register's start time vs batch ticket time catches this.
5. Hot weather pour without precautions — pour at > 35°C ambient causes plastic-shrinkage cracking. Register's temperature column flags hot-weather pours; cold-mix-water + curing-start-immediately + sun-shading required.
6. Inadequate curing — concrete cured 3-7 days vs IS 456-mandated 14+ days for water-retaining; site QA engineer + PMC sign-off forces compliance.
7. No cube test certificate filing — cube tested but certificate not attached to register; gap in audit trail.
Companion formats: - Formwork Removal Schedule (FMT-SIT-024) — pour → curing → formwork strip - Curing Register (FMT-SIT-025) — curing duration tracking - Slump Test Log (FMT-SIT-014) — detailed slump records - Cement Consumption Register (FMT-STR-007) — cement reconciliation
Codes: - IS 456:2000 — RCC code; Clause 16 (acceptance criteria); Clause 13 (curing) - IS 10262:2019 — Concrete mix design - IS 1199 Parts 1-7 — Sampling fresh + hardened concrete - IS 516 Part 1 Sec 1:2021 — Compressive strength test - IS 9013:1978 — Accelerated curing