Technical guides

Earthwork methods, checks and project inputs.

Guides to grid-method assumptions, cross-section spacing and checks, and the information to prepare for an earthwork takeoff.

Published grid drawing crop with numbered cells, W labels and numbers at the intersections. The crop does not include a legend or unit note.

Grid methodSite formation earthwork

Grid-method earthwork: assumptions and checks

Use this guide to check what a grid estimate includes and where the source levels need closer attention. It cannot select a grid spacing or approve a quantity without the project survey, design and measurement rules.

Published drawing at K0+040.00 with a hatched region and Chinese cut and fill labels. Unit confirmation requires the full drawing.

Cross-section methodCorridor earthwork

Cross-section earthwork: spacing and checks

A section area is only one input to a reach volume. This guide explains that distinction and the spacing checks to discuss with the reviewer; a single section cannot establish the quantity for a corridor.

Project preparationEarthwork quantity takeoff

What to prepare for an earthwork takeoff

A short preparation checklist for sending drawings and survey information for an earthwork quantity takeoff.

Have drawings that need measuring? Send them.

The first review confirms the inputs, method and deliverables. We aim to respond within two business days.