Calculators for sitework
Free, with nothing to sign up for. Each one shows its formula, a worked example and where its numbers come from, so you can check the answer before you bid on it.
- Haul calculator: dump truck loads and trucks needed
Bank yards to loose yards to tons, loads limited by the body or the payload, the round trip, and how many trucks keep the excavator loading.
- Trench calculator: excavation, bedding and backfill
Depth to invert, OSHA sloping or a trench box, bedding stone less the pipe, compacted backfill, and what's left to haul or short to borrow.
- ABC stone calculator: tons of base, stone and asphalt
Square yards and thickness to tons, loads and cost for ABC, washed #57, screenings and NCDOT asphalt mixes.
- Equipment cost per hour: owning, operating and fuel
Depreciation, cost of money, fuel by machine class and load, repairs and standby, split into a rate without fuel and fuel.
- Erosion control takeoff: silt fence, seeding and wattles
Silt fence posts and rolls with NC DEQ's slope limits, temporary seeding, lime, fertilizer and straw by season, matting and wattles.
- Topsoil calculator: strip, stockpile and respread
Yards stripped, the swell in the pile and its footprint, the respread, and what's left over to haul or keep.
- Cut and fill calculator: grid or cross sections
A grid of cut and fill depths, or areas by station, to cut, fill and the balance, with transition cells split properly.
- Manhole riser calculator: the precast stack to order
Rim and invert to the base, risers, cone and grade rings, with weights and Charlotte Water's rules.
- Soil converter: bank, loose and compacted yards
Swell, shrink, load factor and tons for common soils, with the factors shown and editable.
- Underground detention takeoff: chambers or pipe
Rows of chambers or runs of perforated pipe to the stone bed, stone tons, geotextile, excavation, backfill and storage, priced from your own costs.