Purpose
The Quantity Takeoff Calculator Skill calculates construction quantities including concrete volumes, steel weights, earthwork quantities, and material takeoffs from drawings or BIM models.
Capabilities
- Concrete volume calculation
- Steel weight calculation
- Earthwork quantities
- Pipe and conduit lengths
- Area calculations (formwork, finishes)
- Unit conversion
- Waste factor application
- BIM-based takeoff
Usage Guidelines
When to Use
- Estimating project quantities
- Supporting cost estimates
- Verifying contractor quantities
- Planning material procurement
Prerequisites
- Design documents available
- Takeoff categories defined
- Unit system established
- Waste factors identified
Best Practices
- Use consistent methods
- Document measurement rules
- Apply appropriate waste factors
- Cross-check critical items
Process Integration
This skill integrates with:
- Construction Cost Estimation
- Specifications Development
Configuration
quantity-takeoff-calculator:
categories:
- concrete
- steel
- earthwork
- masonry
- piping
sources:
- bim-model
- drawings
- cad
units:
- imperial
- metric
Output Artifacts
- Quantity summaries
- Material takeoffs
- Cost backup data
- BOM reports