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Method Statement: Mass Concrete Raft Foundation Pour (Blinding, Waterproofing, Heavy Reinforcement, Thermal Control, Temperature Monitoring, Final QA/QC) – Method Statement
Method Statement: Mass Concrete Raft Foundation Pour (Blinding, Waterproofing, Heavy Reinforcement, Thermal Control, Temperature Monitoring, Final QA/QC) method statement and inspection test plan example.

Method Statement: Mass Concrete Raft Foundation Pour (Blinding, Waterproofing, Heavy Reinforcement, Thermal Control, Temperature Monitoring, Final QA/QC) – Method Statement

AI-assisted method statement with matching ITP, PDF download, and Excel export.

Published 08 Jun 2026 Rev. 00 10 views
About this method statement: This method statement details a complete process for mass concrete raft pours, from blinding and waterproofing to heavy reinforcement and thermal control. It includes testing, temperature monitoring, and ITP-driven acceptance criteria.

More than a static template

Unlike a downloadable Word or PDF template, this method statement is an AI-assisted editable starting point connected directly to a matching Inspection and Test Plan. Every section is structured, project-adaptable, and ready to export.

  • AI-assisted drafting — Customize every section with AI for your specific project scope.
  • Linked ITP — A matching inspection and test plan is generated alongside the method statement.
  • Multiple export formats — Download as a formatted PDF or editable Excel spreadsheet.
  • Editable starting point, not a final document — Review, verify, and adjust all content against your project requirements before use.

Static template vs. Quollnet workflow

FeatureStatic templateQuollnet
Project-specific contentManual fill-in requiredAI-assisted customization
Linked ITPSeparate document, no linkMatching ITP included
Export formatsUsually PDF onlyPDF and Excel
Structured sectionsFree-form layout13 standardized sections
Saved to your accountLocal file onlyCloud-saved, reusable
Content accuracyYou verify everythingAI-assisted, you still verify
CostOften free but time-intensiveFree to customize and download

What you can customize

When you save this method statement to your account, every section becomes editable. The following 13 sections are included:

  • Scope — Defines the activity and its boundaries.
  • References — Standards, specifications, and drawings.
  • Responsibilities — Roles and accountabilities.
  • Resources — Labour, plant, and equipment summary.
  • Materials — Materials and compliance requirements.
  • Equipment — Tools and equipment details.
  • Prerequisites — Hold points and pre-conditions.
  • Method sequence — Step-by-step construction sequence.
  • Safety controls — HSE risk controls and PPE.
  • Environmental controls — Environmental mitigation measures.
  • QA/QC — Quality inspection and test requirements.
  • ITP — Inspection and Test Plan table (has its own page).
  • Attachments — Referenced drawings and documentation.

Why this method statement is used

This method statement is used to define and communicate the approved procedure for carrying out method statement: mass concrete raft foundation pour (blinding, waterproofing, heavy reinforcement, thermal control, temperature monitoring, final qa/qc) on site. It ensures the work is planned in advance, the correct resources and controls are in place, and all personnel understand responsibilities, sequence, quality requirements, and safety controls before work begins. It aligns site execution with the documented scope and acceptance expectations.

Who uses this method statement

This method statement is used by contractors, site supervisors, project engineers, QA/QC engineers, HSE officers, consultants, and client representatives. It serves as a shared reference for planning, execution, supervision, inspection, and approval of the activity on site.

When it is prepared and submitted

The method statement is prepared before the work activity starts and submitted as part of the pre-construction documentation package for review and approval.

Who reviews or approves it

The method statement is usually submitted to the client representative, consultant, resident engineer, or project management consultant for review and approval before the work commences.

Important approval note

This method statement is an AI-assisted editable starting point, not a pre-approved document. Before use on any project, all content must be reviewed and approved by the relevant parties (superintendent, principal contractor, or client representative) in accordance with your contract and project quality plan.

For example: if your specification requires a departure from a referenced standard, that departure must be documented and approved separately — this method statement will not capture that automatically. Always verify against your applicable drawings, specifications, and regulatory requirements.

Method statement content

Scope

Work Scope

This method statement covers all activities required to execute a mass concrete raft foundation pour, including:

  • Setting out, sub-base preparation, and placement of a lean concrete blinding layer.
  • Coordination and installation protection of below-slab waterproofing system (fully bonded sheet or spray-applied) including waterstops and detailing at penetrations.
  • Fabrication, assembly, and installation of heavy reinforcement (bottom and top mats), chairs/spacers, and coordination with embedded items (sleeves, anchors, conduits, earthing).
  • Edge formwork/kicker, pour planning, logistics, and continuous placement of mass concrete.
  • Thermal control plan implementation (pre-cooling, insulation, pour sequence) and early-age temperature monitoring using embedded thermocouples/data loggers.
  • Concrete finishing and curing regime suitable for mass concrete.
  • Monitoring and controlling temperature rise and temperature differentials to mitigate thermal cracking risk.
  • Quality control testing (fresh and hardened concrete), record keeping, non-conformance management, and final acceptance.

Out of scope: Excavation and dewatering works, superstructure works, permanent waterproofing above raft unless stated in project documents.

Objectives

  • Deliver a structurally sound, watertight raft foundation that meets design strength, serviceability, durability, and watertightness requirements.
  • Control early-age thermal gradients to within project-specified limits to prevent thermal cracking [Verify per project specifications].
  • Achieve compliance with applicable standards, ITP, and approved drawings/specifications.

References

Document TypeReference / NumberRevisionNotes
Standard ACI 207 Guidance for heat generation and thermal cracking control
Standard ACI 301 Concrete materials, placing, curing, tolerances
Standard ACI 305, ACI 306 Controls for extreme temperatures during placement and curing
Standards ASTM C94, C143, C1064, C231, C138, C31, C39 Fresh and hardened concrete testing
Standards EN 1992-1-1, EN 13670, EN 206 European practice where applicable [Verify per project specifications]
Standards BS 4449, BS 8666 Reinforcement properties and scheduling
Standard AWS D1.4 Welding of reinforcement [Use only if specified]
Guide ACI 304R Placement practice and pumpability
Standards ASTM D903, ASTM D5385 Waterproofing adhesion and resistance tests (if required by manufacturer)

Responsibilities

RoleResponsibilityName / Party
Project Manager Project Manager Contractor
Construction Manager Construction Manager Contractor
Site Engineer Site Engineer Contractor
QA/QC Engineer QA/QC Engineer Contractor
HSE Manager/Officer HSE Manager/Officer Contractor
Rebar Superintendent/Foreman Rebar Superintendent/Foreman Contractor
Waterproofing Subcontractor Waterproofing Specialist Subcontractor Subcontractor
Supplier / Technologist Ready-Mix Supplier / Concrete Technologist Supplier
Testing Agency Independent Testing Agency Independent

Resources

Resource TypeDescriptionQuantityRemarks
Manpower Site Engineers 2-3
Manpower Surveyor 1
Manpower QA/QC Technicians (field tests, cylinders) 2-4
Manpower HSE Officers (shift coverage) 1-2/shift
Manpower Concrete Pump Operators and Hosemen Per pump
Manpower Rebar Fixers As per bar tonnage
Manpower Finishers/Floats 3-6

Materials

MaterialSpecification / GradeQuantityRemarks
Ready-mix mass concrete EN 206 / ACI 301 compliant; max w/c ≤ 0.45–0.50 [Verify]; slump 100–180 mm pumpable [Verify]; chloride class ≥ Cl 0.2 [Verify] Use SCMs (e.g., 30–60% GGBS or 15–30% fly ash) and retarder as required
Supplementary Cementitious Materials (GGBS, Fly Ash, Silica Fume as specified) Proportions per approved mix design [Verify per project specifications]
Chemical admixtures Set retarder, HRWR (ASTM C494 Types B/D/F/G) dosage per supplier design
Blinding concrete Thickness typically 50–100 mm [Verify per project specifications]
Waterproofing system Manufacturer system data sheet; laps ≥100 mm [Verify]; adhesion per ASTM D903 as applicable; hydrostatic resistance per manufacturer
Waterstops Width 200–300 mm for PVC typical [Verify]; continuous with factory/mitered welds per manufacturer
Spacers/chairs/cover blocks Provide cover as per drawings (e.g., 75–100 mm bottom cover) [Verify]
Reinforcing steel BS 4449 / ASTM A615/A706; laps/couplers per design; mill certs required
Curing materials and insulation Curing compound (ASTM C309/C1315) [Verify]; insulation R-value per thermal plan
Temperature monitoring system Accuracy ±0.5°C typical [Verify]; logging interval configurable (5–30 min)

Equipment

EquipmentCapacity / TypeQuantityInspection Required
Truck-mounted concrete pumps / placing booms 50–60 m boom length typical 2–4 units [Verify] Daily pre-use inspection; third-party certification valid [Verify]
Immersion vibrators 50–75 mm heads; 10–12 kN; radius ~150–250 mm 4–6 units + spares Function test and spare heads available
Screed/beam vibrators and bull floats 2–3 Check straightness and vibration function
Mobile crane 35–80 t [Verify] 1–2 Approved lift plan; operator certification
Thermocouples & data loggers ≥16 channels/logger typical As required Calibration certificates
Concrete field test kits Full set per pump Calibration within validity

Prerequisites

Approvals and Preparations

  • Approved construction drawings, bar bending schedules, waterproofing shop drawings, and method statements (including thermal control plan and pour sequence) obtained.
  • Concrete mix design approved with thermal calculations (adiabatic temperature rise, predicted core temperature, predicted differential) [Verify per project specifications].
  • Pre-pour coordination meeting completed (Contractor, Designer, Employer, Ready-mix Supplier, Waterproofing Subcontractor, Testing Agency). Minutes issued.
  • Logistics plan approved: truck route, pump locations, pour lane/strip sequence, backup pumps, power, lighting, access, emergency egress, and spill response.
  • Permits completed: Excavation permit, Lifting plan/permit, Confined space (if applicable), Night work/noise permit, Hot work (for rebar welding if allowed) [Verify per project HSE plan and local regulations].
  • Instrumentation plan: thermocouple layout drawing, depths, numbering, cable routing, logger positions, sampling frequency, alarm thresholds.
  • Trial mix or mock-up (if specified) completed with temperature rise verification and placement trial (pumpability, finishing, curing).
  • Calibration certificates current: slump cone, thermometers, air meter, unit weight bucket, data loggers, crane and pump certifications.
  • Weather forecast reviewed (48–72 hours). Hot/cold weather measures and contingency materials available (chilled water, ice, windbreaks, heaters, curing blankets) as applicable.
  • Waterproofing materials, primers, tapes, waterstops, and protection boards delivered with manufacturer approvals and MSDS.
  • Inspection request (IR) notifications issued to Employer/Engineer per ITP.

Method Sequence

StepActivityDescriptionResponsibilityInspection / Hold Point
1 Setting out and sub-base preparation Verify levels and bearing strata. Prepare sub-base to design level, compact to required modulus/CBR [Verify], trim and proof-roll. Remove loose/wet spots and replace with compacted fill. Site Engineer / Surveyor Check levels ±10 mm [Verify]
2 Blinding concrete placement Place lean concrete blinding (50–100 mm) to provide clean, level base and protect waterproofing. Finish smooth trowel or wood float as specified. Cure for ≥24 h or as required before waterproofing. Construction Manager Visual & level checks
3 Waterproofing installation Apply primer (if required), lay fully bonded membrane with laps ≥100 mm [Verify], roll for adhesion. Install protection boards over membrane. Detail around penetrations. Maintain cleanliness; no rebar traffic unless protected paths provided. Waterproofing Subcontractor Manufacturer rep inspection (if specified)
4 Waterstop installation at construction joints/penetrations Fix PVC/hydrophilic waterstops centrally in joint plane using clips and ties. Ensure continuity across splices with factory or site welds per manufacturer. At penetrations, install compatible hydrophilic rings and sealing collars. Site Engineer / Waterproofing Subcontractor Dimensional and position check
5 Reinforcement installation – bottom mats and supports Place approved chairs/spacers to achieve bottom cover (e.g., 75–100 mm) [Verify]. Install bottom mat per BBS; tie wires secured; provide continuity at laps/couplers per drawings. Avoid damaging waterproofing by using protection boards and spreader access. Rebar Superintendent Cover gauges and spacings
6 Embedded items and MEP coordination Install sleeves, box-outs, earthing, anchor bolts, and conduits fixed to reinforcement; maintain clear pathways for vibrator access; ensure no clash with waterstops. Verify elevations and coordinates before top mat. Site Engineer / MEP Coordinator Dimensional checks
7 Reinforcement installation – top mats and final checks Install top reinforcement mats with chairs/spacers for top cover (e.g., 50–75 mm) [Verify]. Provide bar supports to prevent flotation. Prepare pour lanes/strips (e.g., advancing front). Rebar Superintendent Cover and stability checks
8 Formwork/edge shutter and kicker Install edge shutters/kickers to required elevations. Provide grout-tight joints and pressure capability for head of concrete. Apply release agent where needed. Construction Manager Formwork check
9 Thermocouple installation and commissioning Install thermocouples at specified grid spacing (e.g., 10–15 m) and depths (surface ~50 mm below, mid-depth, and near core). Route armored cables to loggers outside pour area. Label channels. Program logging interval (e.g., 5–15 min for first 48 h, then 30–60 min). QA/QC Engineer Continuity check and channel mapping
10 Pre-pour meeting and checklist Confirm readiness: ITP holds cleared, manpower, equipment redundancy, lighting, traffic plan, communication plan, emergency plan, test kits, cylinders, curing materials, insulation, admixture contingency. Approve start time considering temperature/wind. Project Manager / QA/QC Sign-off by Engineer/Employer
11 Concrete delivery, acceptance, and placement Verify delivery tickets for mix ID, time, water added, temperature. Reject trucks exceeding time limit [e.g., 90 min] or temperature (>30–32°C) [Verify]. Place in lifts 450–600 mm; maintain a live leading edge; avoid cold joints. Use pumps/booms per sequence. Construction Manager / QA/QC Ticket check; fresh tests
12 Vibration/compaction Systematically insert poker vertically, spacing ~8–10 times head diameter; penetrate 50–100 mm into previous layer; duration 5–15 s until air release ceases and mortar sheen appears. Avoid over-vibration and displacing bars/waterstops. Pump Crew / Finishers Supervisor observation
13 Finishing and initial curing Screed to level; finish per specification (typically float finish). Immediately commence curing: continuous wet cure or curing compound plus insulation blankets/boards according to thermal plan. Finishers Surface check
14 Thermal control during curing Maintain insulation to limit temperature differential (typ. ≤20°C) and peak core temperature (typ. ≤65–70°C) [Verify]. Adjust insulation layers, apply windbreaks, or use surface cooling if needed. Do not strip insulation until differential ≤10°C [Verify]. QA/QC Engineer Review logger data
15 Concrete testing and strength verification Cast cylinders/cubes at start, middle, and end of pour; cure as per ASTM C31/BS EN 12390. Test at 7 and 28 days or as specified. Consider maturity method (ASTM C1074) if approved for early loading decisions. QA/QC / Testing Agency Specimen ID and curing checks
16 Inspection of surface and defects Inspect for cracks, laitance, honeycombing, or surface defects. Map any cracks; measure widths. Execute approved repairs. Investigate causes if thermal cracking observed. Site Engineer / QA/QC Visual and crack gauge
17 Final acceptance Submit as-builts (rebar, embeds, thermocouple layout), material certs, test results, temperature history, waterproofing warranties, and inspection records for Engineer approval. Project Manager / QA/QC Document review

Health, Safety, and Environment (HSE) – Safety Controls

Key Task-Specific Hazards and Controls

1) Hazard: Deep excavation edges and access/egress
- Likely consequence: Falls from height; entrapment; vehicle rollover
- Engineering/procedural control: Edge protection (toe boards + guardrails); designated access ramps; anti-slip walkways; controlled one-way traffic; spotters at ramps
- Required PPE: Helmet, high-vis, safety boots, gloves
- Collective preventive measure: Physical barriers, edge protection nets where needed
- Inspection/permit/supervision: Daily excavation/edge inspections; Excavation Permit; banksman for vehicle movements [Verify per project HSE plan and local regulations]

2) Hazard: Crane and rebar mat lifting operations
- Likely consequence: Dropped loads, struck-by, crush injuries
- Engineering/procedural control: Approved lift plan and rigging; certified slings/shackles; exclusion zones; taglines; weather/wind limits [e.g., stop >9–12 m/s, verify]
- Required PPE: Helmet with chin strap, gloves, safety boots, eye protection
- Collective preventive measure: Barriers and banksmen; radio communication protocol
- Inspection/permit/supervision: Appointed person sign-off; crane inspection and operator certification; pre-lift checklist

3) Hazard: Concrete pump hose whipping/line burst
- Likely consequence: Impact injuries; exposure to wet concrete
- Engineering/procedural control: Secure end-hose; use anti-whip devices; controlled priming; pressure relief before disconnection
- Required PPE: Face shield or safety glasses, chemical-resistant gloves, rubber boots, long sleeves
- Collective preventive measure: Exclusion zone around end-hose; trained hosemen only
- Inspection/permit/supervision: Daily pump/line inspection; pressure gauges functional; supervisor authorization for line changes

4) Hazard: Contact with wet concrete (alkaline burns)
- Likely consequence: Chemical burns, dermatitis, eye injury
- Engineering/procedural control: Provide wash stations; minimize direct contact; barrier creams; safe removal of contaminated clothing
- Required PPE: Alkali-resistant gloves, goggles/face shield, rubber boots, long sleeves
- Collective preventive measure: Task briefings; SDS available on site
- Inspection/permit/supervision: HSE inspections; first-aid readiness; eyewash stations

5) Hazard: Working over waterproofing membrane
- Likely consequence: Puncture leading to leakage risk
- Engineering/procedural control: Lay protection boards and temporary walkways; prohibit sharp tools; use spreader plates under ladders/props
- Required PPE: Soft-soled boots, gloves
- Collective preventive measure: Dedicated access routes and supervision
- Inspection/permit/supervision: Waterproofing specialist to sign off before rebar works

6) Hazard: Thermal effects during mass pour (hot surfaces, steam) and heat stress/cold stress
- Likely consequence: Heat exhaustion or hypothermia; thermal shock to concrete if improper cooling
- Engineering/procedural control: Shift rotation; hydration and rest areas; staged insulation removal; control cooling rate ≤2–3°C/h [Verify]
- Required PPE: Weather-appropriate PPE; hydration packs
- Collective preventive measure: Shade structures/heaters as needed
- Inspection/permit/supervision: Weather monitoring; HSE oversight; implement ACI 305/306 measures

7) Hazard: Night work, limited visibility
- Likely consequence: Trips, struck-by, poor quality control
- Engineering/procedural control: Lighting ≥50 lux on general areas and ≥100–150 lux at workfaces [Verify]; backup generators; reflective signage
- Required PPE: High-vis, headlamps if needed, eye protection
- Collective preventive measure: Light towers positioned outside exclusion zones
- Inspection/permit/supervision: Night work permit; lighting inspection log

8) Hazard: Noise and vibration from equipment
- Likely consequence: Hearing damage; hand–arm vibration syndrome
- Engineering/procedural control: Maintain equipment; limit exposure time; low-vibration tools
- Required PPE: Hearing protection (SNR per site), anti-vibration gloves
- Collective preventive measure: Noise barriers where feasible
- Inspection/permit/supervision: Occupational monitoring as required

9) Hazard: Slips/trips on wet surfaces and hoses
- Likely consequence: Sprains, fractures
- Engineering/procedural control: Hose management; keep walkways clear; anti-slip mats on ramps
- Required PPE: Slip-resistant boots
- Collective preventive measure: Housekeeping regime with assigned steward
- Inspection/permit/supervision: Supervisor walkdowns hourly during pour

10) Hazard: Hot works on rebar (if permitted)
- Likely consequence: Fire, fumes, burns
- Engineering/procedural control: Hot Work Permit; fire watch; fire blankets over waterproofing; local extraction
- Required PPE: Welding hood, fire-resistant clothing, gauntlets
- Collective preventive measure: Fire extinguishers and spark containment
- Inspection/permit/supervision: Permit-to-work; gas test if confined space [Verify per project HSE plan]

Environmental Controls

Controls and Mitigations

  • Concrete washout: Provide lined, bunded washout pit ≥110% volume of a truck washout. Collect and dispose via licensed recycler. Prevent discharge to storm drains.
  • Alkaline runoff: Manage curing water and rainwater on fresh concrete. Test and treat to pH 6–9 before discharge [Verify per local regulations].
  • Noise/working hours: Comply with noise permit, use acoustic shrouds for pumps where feasible, schedule loud activities during permitted hours.
  • Dust and debris: Minimal during concrete placement; maintain clean access roads; wheel wash as needed.
  • Waterproofing primers/solvents: Store in ventilated, bunded areas; use spill kits; avoid ignition sources. Follow SDS requirements.
  • Fuel and oil management: Spill kits at pumps/cranes; drip trays under static plant; refuel in designated areas only.
  • Waste segregation: Separate scrap steel, packaging, plastic membranes; track via waste transfer notes.
  • Light pollution for night pours: Direct light away from residences; use shielded towers.
  • Water use: Optimize curing water; prefer membrane curing in water-scarce environments if compatible with thermal plan.
  • Ecology: Prevent contamination of groundwater; ensure dewatering discharges (if any) are filtered and permitted.
  • Verification: Environmental inspections each shift; non-conformance to trigger corrective action plan.

QA/QC

Quality Assurance and Control Plan

  • Document Controls: Use approved drawings/specs; maintain RFI/NCR logs; issue IRs per ITP milestones.
  • Materials Verification: Mill certificates for rebar; waterproofing product datasheets and warranties; concrete mix approval; admixture certifications. Traceability maintained via delivery tickets and batch IDs.
  • Calibration: Field test apparatus and data loggers within calibration validity; maintain certificates on-site.
  • Mock-ups/Trials: Conduct where specified for waterproofing seams and concrete pumpability/thermal performance.
  • Inspection and Testing: Follow ITP frequencies. Minimum fresh concrete tests per ASTM standards; compressive strength at 7/28 days; temperature logging as per thermal plan; cover checks pre-pour.
  • Acceptance Criteria: Strength ≥ specified; slump/air/temp within limits; temperature differential and peak within thermal plan; waterproofing continuous without defects; rebar cover within tolerance.
  • Thermal Management: Implement controls based on logger data; adjust insulation layers; record interventions.
  • Nonconformance: Raise NCR for deviations; investigate root cause; corrective measures approved by Engineer.
  • Records/Handover: Include IRs, test results, logger data, as-built drawings, waterproofing inspection records, delivery tickets, curing logs, and acceptance certificates.
  • Training/Competency: Operators certified; waterproofing installers approved by manufacturer; QC technicians competent in ASTM/EN test methods.
  • Interfaces: Coordinate with MEP for penetrations; ensure waterstops continuity and embedment. Protect waterproofing during rebar installation with walkways/protection boards.

Attachments

  • Approved drawings: raft foundation GA, sections, rebar details, waterstops and waterproofing layouts
  • Thermal Control Plan: calculations, predicted temperature rise/differential, insulation strategy, contingency measures
  • Pour Sequence and Logistics Plan: pump layout, pour strips, traffic management, lighting plan
  • Mix Design Submittals: cementitious contents, SCMs, admixtures, aggregate gradation, trial results
  • Manufacturer Data Sheets: waterproofing system, primers, tapes, protection boards, curing compounds
  • Calibration Certificates: testing devices, data loggers, pumps, crane
  • Risk Assessments and Method Statements (RAMS): lifting, pumping, night work, hot/cold weather concreting
  • Pre-pour Checklists and ITP Inspection Requests
  • Emergency Response Plan and Spill Control Procedures

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ITP preview

The first inspection activities from the linked ITP for Method Statement: Mass Concrete Raft Foundation Pour (Blinding, Waterproofing, Heavy Reinforcement, Thermal Control, Temperature Monitoring, Final QA/QC):

ActivityInspection / TestAcceptance CriteriaResponsibilityRecord
Sub-base preparation and levelsSurvey check; compaction/plate load if specifiedLevels within ±10 mm; no soft spots or standing waterSite Engineer / QA/QCIR, survey report
Blinding concrete placementRandom coring or depth probe (if required)Thickness 50–100 mm; surface smooth and sound [Verify]QA/QC / EngineerIR, photos
Waterproofing membrane installationAdhesion check (ASTM D903) if specified; spark/holiday test if applicableContinuous, defect-free, laps sealed; protection boards installedWaterproofing Subcontractor / QA/QC / EngineerIR, manufacturer inspection sheet

Showing 3 of 19 inspection activities. View full ITP →

Related Inspection and Test Plan

An Inspection and Test Plan (ITP) is available for Method Statement: Mass Concrete Raft Foundation Pour (Blinding, Waterproofing, Heavy Reinforcement, Thermal Control, Temperature Monitoring, Final QA/QC). The ITP defines the inspection activities, acceptance criteria, hold and witness points, responsible parties, and records required to verify the work described in this method statement.

View the Method Statement: Mass Concrete Raft Foundation Pour (Blinding, Waterproofing, Heavy Reinforcement, Thermal Control, Temperature Monitoring, Final QA/QC) ITP →

Frequently asked questions

A commonly used benchmark is a maximum surface-to-core differential of 20°C, with peak core temperatures limited to 65–70°C. Verify per project specifications.

Typically in a 10–15 m grid with sensors at near-surface, mid-depth, and core locations, all routed to data loggers for continuous monitoring.

A slump in the range of 100–180 mm is typical for pumpability; confirm with the approved mix design and placement equipment.

Install protection boards and dedicated walkways; prohibit sharp tools and use spreader plates under ladders and supports.

Only when the measured temperature differential is within the allowable limit (often ≤10°C) and cooling rates are controlled. Verify per thermal plan.

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