quantity-takeoff-calculator

# Quantity Takeoff Calculator Skill ## 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 ```yaml 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