Quick quantity checks for the site office — concrete, brickwork, steel, earthwork, finishing and unit conversion. Handy when you are framing a rough cost, vetting a contractor's claim, or checking a line of the details of measurement before it goes into the abstract.
Six pages, eighteen-odd calculators. Each one shows its working — the formula, the constants used and a worked breakdown — so you can defend the figure in front of a checking officer, not just quote it.
Nominal mixes M5 (1:5:10) through M25 (1:1:2) with the 1.54 dry-volume factor; mortar and plaster on the 1.33 factor.
Modular-brick masonry on the 500 bricks/m³ norm with wet-mortar volume worked out separately, so brick and mortar tallies agree.
Everything hangs on the one relation the trade runs on — unit weight = d²/162 kg/m — for dias 6 to 32 mm.
Excavation and filling quantities the way they are booked in the measurement book — trench, pit and sloped-side sections.
Finishing quantities — tile counts with wastage, and paint on typical coverage rates (always cross-check the maker's datasheet).
The conversions that keep turning up between old plinth-area records, market quotations and metric estimates.
Why CPWD's revised order makes a DSR 2023 rate fall by 2.7 %, worked on your own base figure — and how the statutory deductions come back out of a gross bill.
These calculators answer the one-member, one-item question — how much cement in that footing, how many bricks in that wall. For the full chain — detailed estimate with analysis of rates, DNIT, agreement, RA bills with deviation and escalation statements — that is what the eTAB Works-Estimator™ does end to end. And when you need per-unit material norms rather than a computed quantity, the consumption tables carry the standard coefficients for common items of work.