Estimate ceramic, porcelain, and subway tile cartons, thin-set mortar bags, and grout pounds by joint width.

Calculate Euler critical buckling load, slenderness ratio (KL/r), radius of gyration, and safe axial compressive capacity for wood posts, steel pipes, and columns.

Calculate maximum bending moment, shear force, and deflection (L/360, L/240) for wood, steel, and LVL beams under distributed and point loads.

Calculate peak stormwater runoff (Rational Method Q = CIA), culvert pipe diameter (Manning equation), flow velocity, and rip-rap erosion protection.

Calculate stair risers, exact unit rise and tread run, stringer lumber length (2×12), stringer throat depth, and IRC/IBC building code compliance.

Calculate IBC/IRC compliant stair stringers, total rise and run, riser heights, tread depths, stair angle, and stringer board lengths.

Calculate concrete volume, Sonotube pier counts, spread footing soil contact pressure (PSF), rebar dowels, and frost line depth compliance.

Calculate Terzaghi ultimate and allowable soil bearing capacity (PSF and kPa) for continuous, square, and circular footings.

Convert between slope percent (%), degrees (°), pitch (rise/run per foot), and ratio (H:V). Verify ADA ramp limits (1:12), roof pitches, and drainage sewer slopes.

Determine exterior siding squares (100 sq ft), plank counts, trim channels, outside/inside corner posts, and gable end takeoff.