Steel Material Takeoffs & Bills of Material

A material takeoff is useful when quantities and descriptions relate to a defined scope. Tectonix’s BIM and 3D modeling service describes takeoffs and advanced bills of material extracted from the Tekla Structures model. These outputs can support estimating, early mill orders, and procurement planning while drawings develop.

A model-based list does not replace review of contract documents or purchasing assumptions. Scope changes, connection development, and drawing revisions can affect quantities. Tying a takeoff to the model and its issue status helps teams identify which project information it represents.

First, review contract documents and clarify scope: which steel package or phase is involved, what information is available, and whether the request supports bidding, procurement, or an update from a developing model. An early estimate and a later model-derived bill represent different project stages.

As the Tekla model develops, material information can be extracted and aligned with agreed project requirements and formats. If an approved revision affects quantities, the model and project records support identifying and updating that information when included in scope.

Before ordering, confirm the takeoff’s issue date, scope, units, and relationship to current approved documents. An early-model list may support planning but is not the same as a later revised release. Your project manager can coordinate update records and drawing status.

For scope review, share current structural drawings, specifications, the bid or procurement schedule, and required format. Include revision information for any existing model or list. The team can confirm whether a model-based takeoff fits the requested phase and agreed detailing scope.