TrenchCalc

TrenchCalc is the go-to app for civil crews and site engineers who need fast, accurate trench volume calculations and material estimates — including cement-stabilised sand fill — directly on site. Built for reliability, TrenchCalc handles both simple and complex trench configurations with support for: Circular and box culverts Benched, battered, or vertical wall types Layered fill zones (bedding, haunch, overlay, etc.) Cement content by zone (% of soil mass) Computing spoil heap geometry Custom fill densities and compaction factors Imperial and metric units (instant toggle) No more spreadsheets. No more guesswork. Enter trench dimensions and instantly get: Net fill volume (compacted and loose) Cement volume and mass Per-zone material breakdowns Truckload estimates Soil testing frequency by lift (NDM, PSD/PI) Access ramp excavation volume Construction planner timelines Engineered for site usability: Large tap targets and swipeable inputs Custom numeric keypad with clamping and units Diagram preview updates live as you edit Safety breach detection for trench depth, toe clearance, slope, spoil offset, and more Contextual help dialogs with visual guides Export ready: Save full breakdowns and test schedules. Tap to view fill volume by zone (bedding, haunch, overlay) or total stabilised mix — all matched to your selected trench profile. Weather-based cement warnings: Get live alerts for extreme heat, cold, or rain within the next 24 hours to avoid poor cement placement conditions. (Pro feature) Quick Save / Load: Save your trench settings mid-project and come back later. Restore all dimensions, wall types, culvert layout, fill materials, and more with a single tap. Code compliance built-in: TrenchCalc checks your setup against safety thresholds (e.g. max vertical wall depth, solo worker limits, step height rules) and flags any breaches, including when depth changes after acknowledgement. Designed by engineers, for engineers. Whether you're prepping culvert backfill, calculating spoil clearances, or setting up testing regimens, TrenchCalc helps you stay fast, accurate, and compliant. Perfect for: Supervisors needing quick field estimates Site engineers checking trench profiles Contractors pricing cement-stabilised backfill QA staff planning test frequencies Anyone needing confident material orders Start calculating with confidence. TrenchCalc puts precision and clarity in your pocket — no internet required. Try it free. Upgrade to Pro for cement weather alerts, testing exports, and planner tools.