Vasundhara Cost Intelligence · Engineering Workbench

RCC calibration ledger.

The first executable Cost Computer ledger: explicit quantities multiplied by explicit evidence ranges. This is a calibration instrument, not a released construction rate.

PRODUCTION GATE: CLOSED
Research observations are deliberately prevented from becoming a project estimate until commercial basis, productivity, logistics and cross-check evidence are complete.

Calibration basis

M25 ready-mix₹4,261–5,327 / cum

Raipur market observation; delivery within city limits stated by source. Research-only.

Fe500D reinforcement₹52–60 / kg

Raipur dealer-to-retail observation. Exact brand, GST and delivered-site basis unresolved.

Foundation formwork₹165–250 / sqm

SECL Manikpur bidder distribution; commercial reconciliation pending.

Computed component envelope

Concrete · 1.000 cum₹4,261–5,327
Rebar · 100 kg₹5,200–6,000
Formwork · 5 sqm₹825–1,250
Calibration envelope₹10,286–12,577

This sum is a component calibration envelope only. It is not an installed RCC rate and must not be used as a project budget.

What happens next

  1. Normalize two independent Fe500D quotations for exact diameter, brand/mill, GST and delivered-site basis.
  2. Capture productive steel-fixer output with crew composition.
  3. Reconcile formwork scope and commercial basis.
  4. Cross-check against a real project BOQ/BBS.
  5. Promote only the validated component into the production rate layer.

Generated from cost-computer-rcc-calibration-2026-09-19.json. Labour statutory floors remain compliance baselines, not productivity-derived rates.