Guides
Step by step, with pictures of QTac doing the work.
Checking a quantity before it goes into a bid
The four checks that catch nearly every take-off error: scale, outliers, the working column and the marked-up PDF.
14 Oct 2026Your first take-off, step by step
Open a drawing, set the scale, measure a slab and a wall, and export the dimension sheet. About fifteen minutes.
14 Oct 2026Deducting openings without double counting
Mark a door once and QTac takes it out of plaster both faces, brickwork and painting. Here is how, and what the Assumptions sheet records.
14 Oct 2026