Contractor & Heavy Construction Estimators Directory
Professional civil engineering, concrete slab takeoff, earthwork haul-off, framing, and mechanical equipment sizing calculators for general contractors and trades.
Programmatic Civil & Contractor Estimating APIs
Integrate live concrete volume, dirt haul-off (/api/calc/concrete-haul), hard money construction sizing (/api/calc/hard-money), and CRE debt yield calculations directly into your contractor estimating software or job bidding CRM.
Excavation & Dirt Haul-Off
Convert bank yards (BCY) to loose yards (LCY) with soil swell factors and truck trip costs.
Barndominium Foundation Slab
Calculate turn-down perimeter footings, 4" vs 6" slab yardage, and #4 rebar footage.
Retaining Wall Blocks & Gravel
Modular wall units, buried base course, #57 drainage chimney tons, and geogrid layers.
Stamped Concrete Patio
Color hardener lbs, antique release agent, stamp pattern impressions, and wet-look sealer.
Metal Stud Framing & Track
25ga vs 20ga steel studs, top deflection track, bottom runner, and wafer-head screw takeoff.
Generator Load Shedding & ATS
NEC Article 702 smart load management, AC lockouts, and generator standby downsizing.
OSHA Subpart P Trenching & Soil Mechanics
Type A/B/C slopes, Rankine lateral earth pressure on shields, 25-ft egress ladders, and daily inspection logs.
AIA G706 / G706A Sworn Affidavit Suite
Statutory sworn statement of debts, material claims, and release of liens for final retainage recovery.