Plan excavation, concrete, gravel, paving and finished levels with checked examples and free Handyman Hub calculators.
Groundworks & Patios
Falls and Gradients: Ratios, Percentages and Levels
Convert 1-in-80 into percentage, angle and fall. Follow a checked station table and distinguish elevations from laser-staff readings.
Patio Materials: Pavers, Packs, Bedding and Base
Build a patio material order from paver modules, waste and whole packs. Keep bedding, base, excavation and drainage quantities separate.
Gravel Quantities: Depth, Compaction and US Tons
Convert a specified gravel layer into volume and US tons. Check density, compaction allowances, bag quantities and delivery assumptions.
How Much Concrete to Order: Volume, Bags and Allowances
Calculate concrete for a 12-by-10-foot example, compare cubic yards with bag yield, and separate allowances from supplier rounding.
Excavation Quantities: Bank Volume, Loose Spoil and Loads
Separate excavation volume, loose spoil, retained material and removal loads. Follow a checked US example and avoid mixing density bases.