Engineering & Estimation Utilities
BuildTools
Practical calculators and cost generators for contractors, quantity surveyors, and site engineers.
Featured Production Tool
Unit Rate Analysis & Cost Breakdown (CBD) Generator
Select any trade of work across Substructure and Superstructure. Build Sphere prices every material, labour and equipment item against the live Ethiopian Price Guide, calculates hourly outputs, applies your overhead and profit margins, and exports full multi-sheet formatted Excel workbooks.
✓ Live Price Guide linked✓ Multi-source pricing✓ Excel & PDF export✓ 14+ standardized trade templates
Instant Quantity & Material Estimators
Quick on-site volumetric calculations for batching, reinforcement, and masonry works.
1. Input Concrete Volume & Grade
Estimated Batching Requirements (1 m³ · C25)
Cement Bags (50kg)8 bags~380 kg OPC
Fine Aggregate (Sand)0.42 m³Washed river sand
Coarse Aggregate0.82 m³Crushed basalt 01 / 02
Mixing Water195 LitersW/C ratio ~0.50