METHOD STATEMENT R.C.C. WORK · SUBSTRUCTURE / SUPERSTRUCTURE

published on
Arshavtar.in by Er. Kuljit Singh
REVIEWED BY
SIGNATURE
DESIGNATION
DATE
PREPARED BY
SIGNATURE
DESIGNATION
DATE
1. REINFORCED CEMENT CONCRETE (RCC) WORK
1.1 Scope Of Work

Design, formwork, reinforcement, concreting, and curing for RCC elements: footings, columns, beams, slabs, and walls for substructure (below ground) and superstructure (above ground).

1.2 Quality (approx quantity)

As per project BOQ – typically 200 m³ to 5000 m³+ depending on scope.

1.3 Reference Drawing

Structural drawings (G+1, G+2 etc.), RCC details, beam/column schedules, foundation layouts.

🧪 CONCRETE GRADES FOR RCC (M20, M25, M30)
Nominal / design mix weights per m³ (SSD)
GradeMix (C:S:A)Cement (kg)Fine Sand (kg)Coarse Agg (kg)Water (lit)
M201 : 1.5 : 3350 – 380500 – 5501100 – 1200160 – 180
M251 : 1 : 2425 – 450450 – 5201050 – 1150170 – 190
M30design mix450 – 500450 – 5001050 – 1150160 – 180

* Weights indicative based on IS 456. M30 is design mix; proportions vary with admixtures.

RATE VARIATION – SUBSTRUCTURE vs SUPERSTRUCTURE

  • Substructure (below ground): Includes foundation, raft, grade beams. Rates generally ₹ X / m³ (higher due to dewatering, deep excavation, formwork challenges).
  • Superstructure (above ground): Columns, slabs, beams up to 4m. Rates ₹ Y / m³ (baseline).
  • Above 4m height: Additional +10% to +15% on labour component for scaffolding, hoisting, and slower placement.
  • Danger / high-rise (above 8m): Further escalation +20% on formwork & concreting.
⚖️ Typical rate difference: Substructure ≈ +12-18% over superstructure rates. Heights >4m attract extra ₹ 150–250 per m³ on labour.
3. RCC WORK PROCEDURE
3.1 Formwork & Staging
  • Erect formwork as per drawing; ensure alignment, plumb, and rigidity. For heights >4m, use certified staging.
3.2 Reinforcement
  • Cut/bend rebars as per schedule; place with covers; tie securely. Inspect before concreting.
3.3 Concreting
  • Pour concrete in layers; compact with needle vibrator; avoid segregation. For deep beams >1m, pour in stages.
3.4 Curing & Deshuttering
  • Curing for min 7 days (14 days for critical). Deshutter as per IS 456 timelines.
4. RESOURCES PLANNING
Tools & Tackle
ItemRemarks
Concrete mixer / batching plant
Needle vibrator / plate vibrator
Shovels, rakes, wheelbarrows
Rebar cutter / bender
Scaffolding / shuttering plates
Manpower (typical per shift)
CategoryNos.
Engineer / Supervisor1
Mason (finishing)2
Skilled bar bender / carpenter4–6
Unskilled labour8–12
📏 PRODUCTIVITY & MEASUREMENT
ActivityOutput (per 8h)
Formwork erection (m²)8–12 m²
Rebar fixing (kg)80–150 kg (depends on complexity)
Concreting (m³) – pump15–25 m³
Concreting (m³) – manual8–12 m³

Output reduces by 15% for heights >4m due to crane/hoist time.

💰 RATE ANALYSIS – HEIGHT & LOCATION FACTORS
Substructure (below ground)

Includes dewatering, shoring, deep excavation, anti-termite treatment. Rate premium: +12% to +18% over standard superstructure rate.

Superstructure (up to 4m)

Baseline rate (₹ X per m³). Includes normal scaffolding, easy access.

Above 4m height (4m–8m)

Additional +10% to +15% on labour component; extra for crane / hoist.

Above 8m (high rise)

Labour rates increase by +20% on formwork and concreting; requires skilled operators.

📊 Example: If base rate (0–4m) is ₹5000/m³, substructure might be ₹5600–5900/m³; 4–8m add ₹500–700/m³.
Safety & Quality Checks
  • Full PPE, scaffold guard rails, inspection of formwork.
  • Slump tests, cube tests, reinforcement inspection.
  • Daily checklist for heights >2m.

TOOLBOX TALK RECORDS

Date:
MSRA
Name
Signature
Date
Toolbox talk carried out by:
A completed copy must be sent to the EM TS EHS Manager.

Er. Kuljit Singh · Arshavtar.in