Structural estimation models from 2D drawings

An estimation model — sometimes called an esti-model — is a purpose-built 3D line model designed specifically to support quantity takeoff and cost estimation. StickModel produces estimation models from your 2D drawings, giving your estimating team a spatially accurate representation of the structure they can use to extract member quantities, run material trade-off analysis, and produce reliable cost schedules faster than working from flat drawings alone.

What is a structural estimation model?

A structural estimation model is a simplified 3D model — typically a stick or wireframe representation — that captures every structural member, its length, section type, and connectivity. Unlike a detailed BIM model, an esti-model is built for speed and quantity extraction. It gives estimators exactly what they need: accurate geometry in three dimensions, fast to produce and easy to interrogate.

How estimation models improve material takeoff

Material takeoff decisions — choosing between section sizes, connection types, or structural systems — are only as good as the quantity data underpinning them. When those quantities come from 2D drawing takeoff, errors compound. An estimation model makes material takeoff more reliable because quantities are extracted from geometry, not scaled manually. Estimators can test different section sizes against the same model and compare material costs with confidence.

Line model for estimation — how it works

A line model for estimation represents every structural member as a line in 3D space with its real-world length and orientation. From this, you can extract a complete schedule of members sorted by type and length, ready for pricing. StickModel produces line models directly from your 2D structural drawings. You send us the drawings; we return the model and, if required, a member schedule in your preferred format.

Faster takeoff with esti-model generation

Traditional manual takeoff from structural drawings can take days. An esti-model produced by StickModel can be ready in 24 hours, and your estimating team can begin quantity extraction immediately. For large or complex structures, the time saving is substantial. For smaller projects, the accuracy benefit eliminates the manual scaling errors that routinely cause budget overruns and re-quotes.