Technical Drawings

An execution drawing is a 2D technical document produced from the building's BIM (Building Information Modeling) digital model, rather than drawn independently. The plan view, section, or elevation is extracted from the existing model, then laid out and dimensioned for a specific use — construction site, execution package, tender. This service covers the 2D documents produced from the model, not the model itself: BIM modeling is a separate service, and this one is its documentary extension. The detail book complements the general drawings by isolating, at a larger scale, the building's singular points — junctions, bearings, waterproofing treatments — wherever the information needs to be detailed enough to be built on site.

How the Engagement Works

The engagement starts from the existing BIM model, which serves as the single source for all 2D documents. The required views — floor plans, sections, elevations — are extracted from the model according to the drawing list and breakdown agreed with the project. Each view is then laid out and dimensioned: title block, scale, references, dimensions, and legends are added to produce a document that stands on its own, independent of the model. Singular points identified with the project are covered by detail books, which take these areas at a larger scale to clarify junctions and construction treatments. The documents are then exported in the formats required for distribution and archiving. Any change made to the source model is picked up at the next extraction, which keeps the drawings aligned with the model rather than letting them drift apart across revisions.

What You Receive

Delivery includes dimensioned plans for each level, the sections needed to understand the built volume, and the elevations. Construction detail books are included as well, documenting the singular points at a scale suited to their execution on site. Documents are provided in an editable format as well as a common exchange format for distribution, review, and printing on site. The drawing list, the scale of each view, and the content of the detail books are defined with the project upfront, depending on the target package — building permit, execution, tender — rather than produced to a single standard.

When You Need It

On site, dimensioned plans and detail books serve as a direct reference for contractors executing the works, with a level of precision suited to the requirements of each trade. In a tender package, the same documents let bidding contractors price the works on a common basis, extracted from the same model for everyone. The execution package brings together the plans and detail books needed to launch the works, once design decisions have been settled in the model. In all three cases, drawing every document from the same model limits discrepancies between the different pieces of the package.

Frequently Asked Questions

Does an execution drawing replace the BIM model? No: the model remains the source of information, the drawing is an extraction formatted for a given use; any project change goes through the model first, then a new extraction of the drawings concerned. What is a detail book? It is a document that isolates the building's singular points at a larger scale than the general drawings, to clarify junctions or treatments that an overall plan cannot represent legibly. Can drawings be updated after a model change? Yes, a new extraction picks up the current state of the model to produce an updated version of the drawings and detail books concerned.