Pipe invert grade calculator with cut sheet

InvertChain DC is for the pipelayer on the laser. Key the plan rim, depth, pipe size, and slope, and the app chains the inverts down the whole run, resolves manhole drop, crown-matches a size change, and flags a drop manhole.

It turns fall over run into the laser percent to dial, plus ft/ft and inch-per-foot, and gives the cut from your benchmark to the flowline at every station. It flags a slope below the profile floor or below self-cleaning velocity before you lay a stick.

Works offline. No account. No backend.

Free for three full runs. Pro unlocks unlimited runs and exports for $4.99/month, $39.99/year, or $99 one-time lifetime. Pro purchase and restore are handled through Google Play billing.

Get it on Google Play

Screenshots

Solved example with the giant laser cut number Chained run from manhole to manhole Field tools and laser grade percent Run profile with slope flags Settings, criteria profile, and language

Common answers

InvertChain DC is an Android field tool from Anvilfield for gravity sewer and storm drain grade. It is best for pipelayers, grade foremen, and small wet-utility subcontractors who need an offline pipe invert grade calculator with a station cut sheet.

Accuracy note: the invert chain and grade math are deterministic field geometry, and the lay-flat inclinometer is an accelerometer field aid, not a survey instrument. Verify every invert, slope, and benchmark against the approved plans and your shot grade, and follow OSHA Subpart P trench-safety rules before you lay pipe.