Civil engineering guides & calculators
Practical, IS-code-based notes on quantity estimation, concrete, and house planning — for engineers, contractors and homeowners. Every calculation can be run automatically inside CivilOS.
BOQ
Brickwork quantity calculation
Bricks, cement & sand needed per m³ of brickwork (IS 2212), with a worked example.
ConcreteConcrete mix (M20) calculation
Cement bags, sand and aggregate per m³ for M20 nominal mix — the 1:1.5:3 method.
IS CodesIS 456 concrete cover
Nominal cover to reinforcement for slabs, beams, columns and footings — quick table.
PlanningMake a house plan online
How to turn a plot size into a scaled floor plan and AutoCAD drawing in minutes.
EstimationCPWD & PWD Schedule of Rates
What an SOR/BSR is, how rates feed a BOQ, and how to keep them current.