AI construction drawings for window frame calculations

Why window frame calculations take so much time

In window and door projects, most of the time is not spent on the actual calculation, but on searching, interpreting, and verifying information.

Specifications, drawings, details, revisions, and supplementary documents contain all the necessary data, but this information is spread across dozens or sometimes hundreds of pages.

This leads to challenges such as:

• Manually searching for project requirements
• Varying interpretations of drawings
• Ambiguities between specifications and detailed drawings
• Revisions that need to be re-checked
• Variants and custom work that are difficult to compare
• High dependency on experienced estimators

The result? More time per request, increased risk of errors, and less capacity to issue additional quotes.

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How AI automatically analyzes construction drawings for window frame calculations

Automatically recognizing drawings

The Bestek Agent analyzes technical construction drawings and automatically recognizes relevant components, details, facade layouts, and window frame structures.

Automatically counting window frames and elements

From frames and doors to window types and facade elements: quantities are extracted directly from drawings without manual counting.

Capture dimensions and metadata for frame calculations

Dimensions, areas, and technical specifications are automatically processed into usable calculation information for frame manufacturers.

Automatically link specifications and construction drawings

Performance requirements from the specifications are automatically linked to the correct components in the construction drawing.

Reprocess revisions of construction drawings

New versions of drawings and documents are automatically re-analyzed, without starting from scratch.

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From request to frame calculation in four steps

1. Upload documents

Upload specifications, drawings, IFCs, PDFs, attachments, or complete ZIP files as you receive them.

2. Select your desired output

Determine which information you want to extract or work with an existing calculation template.

3. Receive structured output

All relevant data is automatically collected, linked, and clearly presented.

4. Start calculating immediately

Work from a consistent calculation basis, including source references and linked project information.

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What information AI extracts from construction drawings for window frame companies

The Specification Agent assists with identifying and structuring, for example:

• Window frame types and variants
• Glass and insulation values
• Fire resistance requirements
• Ventilation grilles
• U-, G- and ZTA-values
• Dimensions and areas
• Installation conditions
• Numbers and quantities
• Revisions and changes
• Discrepancies between documents
• Project-specific requirements

This provides quicker insight into what is relevant for calculation.

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AI agents for construction drawings and calculations

Within the calculation process, multiple AI agents collaborate. This is called an agentic system. Each agent supports a specific part of the process.

Document Analysis Agent

Analyzes specifications, contract documents, and supplementary documents, and structures all project requirements.

Technical Drawings Agent

Identifies frames, variants, dimensions, and technical specifications from construction drawings.

Risk & Inconsistency Agent

Flags contradictions, missing requirements, and discrepancies between documents.

Product Portfolio Agent

Compares project requirements with standard products, variants, and customisation options.

Contract Analysis Agent

Analyzes contract terms, liabilities, and special requirements within projects.

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How much time do window frame companies save with AI calculation?

By automating the preparatory work, the calculation process shifts from manual searching to focused assessment. Instead of spending hours sifting through documents, you start directly with a structured calculation basis.

Reading Specifications

Traditionally, understanding specifications often takes 4 to 8 hours per project.
With the Specification Agent, relevant information is automatically collected and structured, reducing this to 1 to 2 hours.

Analyzing Construction Drawings

Manually analyzing construction drawings, details, and revisions often takes estimators 6 to 12 hours.
AI automatically identifies frames, dimensions, variants, and project requirements, reducing this process to 1 to 3 hours.

Identifying Risks

Traditionally, discrepancies and contradictions must be checked manually.
The Specification Agent automatically assists in identifying inconsistencies, missing requirements, and risks within documents.

Processing Revisions

When changes are made, the process typically restarts almost entirely.
With AI, new versions of specifications and construction drawings are automatically re-analyzed, without starting over from scratch.

As a result, window and door companies can process more requests with the same capacity and issue reliable quotes faster.

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Which window and door companies would find this interesting?

The Specification Agent supports, among others:

• PVC window manufacturers
• Aluminum facade builders
• Wooden window manufacturers
• Renovation projects
• Residential construction projects
• Commercial construction
• Facade specialists
• Project-based window production

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