TrenchIQ Pro — trenchiq.net

Pipe type — Run 1

Nominal diameter

DOT / State specification VDOT

VDOT Road & Bridge Specs 2020, Detail UD-2. #57 stone = ASTM D448 Size 57.

Bedding depth (in) per DOT

Trench add-on each side (in) per DOT

Override either value for project-specific specs. Auto-populates from DOT selection above.

Trench inputs

Run length (LF)

Cover — grade to top (in)

Over-excavation (in)

Waste / compaction (%)

Stone unit wt (lbs/CY)

Production rate (LF/day)

Soil type

Trench wall type

Pipe weight (lb/ft) — auto from table

Wall type drives excavation volume formula. Shored = rectangular prism. Open-cut = trapezoidal per OSHA Appendix B. Pipe weight auto-loads — override for project specs.

DOT specification & trench standards

State DOT

VDOT #57 Stone · VDOT Road & Bridge Spec 2020, Sec 302 · 6″ bedding for all pipe sizes.

Custom trench width (in) — override

Bedding depth (in) — auto from DOT

Leave trench width blank to use DOT standard. Enter a value to override for your project. Bedding depth auto-populates from DOT selection.

Structure rims & inverts — NAVD 88

ID	Rim elev (ft)	Inv drop (ft)

Inv drop = rim elevation minus pipe invert elevation at that structure. E.g. rim 12.50, invert 7.30 → drop 5.20 ft.

Site grade — NAVD 88

High point (ft)

Low point (ft)

Water table — both sources

Geotech boring WT elevation (ft NAVD 88)

Field observed — depth to WT from grade (ft)

Conservative (lower elevation) of both sources used. Enter both for delta check.

Shoring

Method

Daily rental ($/day)

Mob / demob ($/job)

Sheet pile add-on ($/LF)

Dewatering

Method

Pump + fuel ($/day)

Operator ($/day)

Wellpoint install ($/LF)

Contingency pump days

TrenchIQ Pro trenchiq.net

ESTIMATING TOOL ONLY — Verify with licensed engineer before construction

Trench cross-sections — all runs

Fill / select

#57 stone

Native soil

Over-ex

Water table

Shoring

Elevation analysis — NAVD 88

Invert analysis per structure

Structure	Rim (ft)	Drop (ft)	Invert (ft)	vs WT	Cover (in)

Water table — geotech vs field

OSHA / VDOT verdicts

Materials — Run 1 100 LF

Shoring & dewatering — Run 1

📄 Geotech report — optional PDF upload

Upload a geotechnical boring log or lab report. Extracted values populate inputs automatically.

📂 Drop PDF here or click to browse

Boring logs, lab results, geotech summaries

☑ Field safety checklist — optional but recommended before field use

Complete before submitting to field crews. Unchecked items do not block estimate but are flagged.

Soil type verified by Competent Person
Name & date of field verification Trench depth measured on site
Not assumed from plans Water table elevation confirmed
ft NAVD or "no groundwater encountered" Ladders / egress within 25 ft of all workers
Required by OSHA 29 CFR 1926.651(c) when depth > 4 ft Shoring design approved by licensed PE
Required by OSHA 1926.652(b)(3) when depth > 20 ft Drawdown plan prepared
Required when groundwater is encountered Pipe buoyancy / float risk reviewed
Confirm dewatering or ballasting plan if red flag shown

TrenchIQ Pro · trenchiq.net · NAVD 88 · Darcy · VDOT / ASTM / OSHA | ESTIMATING TOOL ONLY — Not engineering advice. Verify all quantities with a licensed engineer before construction. TrenchIQ LLC assumes no liability for field conditions or consequential damages.