The legal-pad math, done for you
Material math, bore math, fiber math and the OSHA thresholds, built by people who do this work for a living. Free, no signup, no catch. Material weights are cross-checked against published DOT and supplier charts; confirm with your own supplier, since moisture and mix change every yard.
Material and volume
Yards, tons, bags and truckloads, from the dimensions you already have.
Cubic yards, tons, and truckloads for fill and excavation. The one that started it.
Cubic yards and bags from bed size and depth.
Yards, tons, and truckloads for gravel and crushed stone.
Yards and tons for bedding, paver base, septic, and fill sand.
Hot mix is ordered by the ton.
Yards, tons, and truckloads for lawn repair, regrades, and beds.
Yards for the ready-mix truck or bags for the mixer.
Yards, tons, and truckloads for raising low spots, backfilling, and building pads.
Tons, yards, and truckloads for #57 stone, dense grade, and driveway limestone.
Tons, yards, and truckloads for erosion control on shorelines, channels, and slopes.
Yards, tons, and truckloads of base for patios and walkways.
Excavation and grading
Holes rather than materials: what comes out, and what the grade has to do.
Spoil, bedding, and backfill from trench dimensions.
Stone quantities from trench size.
Dig volume from pond size.
Percent grade, ratio, degrees, and fall per foot, plus the usual targets for pipe and grading.
Directional drilling
Pitch, depth, hole size and the fluid to keep it open.
Directional drilling: drop per rod, pitch to degrees, and rods and surface run to reach depth.
Borehole volume in gallons, spoil in yards, annular volume, and how much fluid to plan for a bore.
What to backream a bore for a single pipe or a conduit bundle, using standard packing ratios.
Fiber and conduit
Cable, conduit and the numbers that decide whether a pull or a span works.
Ballpark a fiber build: bore/trench/aerial footage, handholes, and splices at your rates → cost/ft and timeline.
HDPE/PVC/PP weight per foot from OD and DR, total run weight, and how many feet are on a reel.
Add up cable, connector and splice loss and check it against your power budget. Single-mode and multimode.
Fill percent against the NEC limits, jam ratio for a three-cable pull, and how many cables fit a conduit.
Pulling tension on a straight run with a bend, the sidewall pressure, and whether it beats the cable ratings.
Mid-span sag from span, weight and tension, and whether the low point still clears the road under it.
FTTH design: subscribers, splitters, OLT ports and drops from homes passed and split ratio, with split loss.
Minimum bend radius for a fiber cable, loaded and at rest, plus the smallest safe service loop.
How much cable to order for a route: footage plus slack at every structure, service loops and waste.
How many fibers a PON or point-to-point run needs, with express feeders and spare, and the standard cable count to spec.
Open a plan PDF and redline it for the crew: bore routes, footage, handholes and notes. Nothing is uploaded.
Safety and compliance
The thresholds that decide whether a trench is legal to stand in.
Free templates
Fill-in forms for the paperwork every crew owes somebody. PDF to print, Excel to edit.