Easily calculate quantities for substructure elements like site clearance, trenches, blockwork, columns, and sand filling. Generate a professional Bill of Quantities (BOQ) with this user-friendly tool for engineers, contractors, and builders.

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• Substructure Calculators – Estimate quantities for site clearance, trenches, blockwork, columns, and more
• Flexible Units – Use meters, feet, inches, or yards for measurements
• Bill of Quantities (BOQ) – Compile and export results as CSV or PDF

• Measurement Unit – Choose Meters, Feet, Inches, or Yards from the dropdown
• Calculator Tabs – Select from Site Clearance, Trench Quantity, Foundation Blockwork, Concrete Column, Circular Column, Columnbase Excavation, or Sand Filling

Provide inputs for the selected calculator:

• Site Clearance – Length, Width (e.g., 10m, 5m)
• Trench Quantity – Length, Width, Depth, optional fields like Support Depth, Blinding Thickness
• Foundation Blockwork – Total Length, Depth (e.g., 20m, 0.6m)
• Concrete Column – Number of Columns, Width, Thickness, Height, Rebar Weight, Bars per Column (e.g., 12, 0.24m, 0.24m, 3m, 1.58 kg/m, 4)
• Circular Column – Number of Columns, Diameter, Height, Rebar Weight, Bars per Column
• Columnbase Excavation – Length, Width, Depth, Blinding Depth, Concrete Depth, Reinforcement Details
• Sand Filling – Length, Width, Sand Depth, Hardcore Depth, Truck Capacity (e.g., 20 or 30 tons)

Click the black Calculate button. View a short ad, then click Continue to display results instantly.

Key outputs for substructure calculations:

• Site Clearance: Area = Length × Width
• Trench Quantity: Excavation Volume = L × W × D, plus support, backfill, and concrete volumes
• Foundation Blockwork: Area = L × D, Blocks = Area × 10
• Concrete Column: Volume = n × w × t × h, Formwork = n × 2 × (w + t) × h, Rebar = n × b × h × w
• Circular Column: Volume = n × π × (d/2)² × h, Formwork = n × π × d × h
• Columnbase Excavation: Excavation = n × L × W × D, Concrete = n × L × W × C
• Sand Filling: Sand Volume = L × W × D_sand, Trucks = (Volume × Density) ÷ Truck Capacity

• Enter Project Name, Date, and Currency (e.g., USD, Naira)
• Click Generate BOQ to compile all calculated quantities
• Add rates to compute total costs
• Export as CSV or PDF for professional reports

• Enter positive numbers for all inputs
• Ensure consistent units across calculations
• Recalculate after modifying inputs or units
• Perform all relevant calculations before generating BOQ

• Comprehensive – Covers key substructure elements
• Easy to Use – Intuitive interface, no software required
• Professional BOQ – Export detailed reports in CSV or PDF