TrenchIQ — Coastal Pipe Trench Estimator

Pipe type

Nominal diameter

Trench inputs

Run length (LF)

Cover — grade to top of pipe (in)

Over-excavation (in)

Waste / compaction (%)

Stone unit weight (lbs/CY)

Production rate (LF/day)

Soil type

Structure rims — NAVD 88 (ft)

ID	Rim Elev (ft)

Site grade — NAVD 88 (ft)

High point grade

Low point grade

Water table — both sources (NAVD 88)

Geotech / boring log — WT elevation (ft NAVD 88)

Field observed — depth to WT from grade (ft)

The tool uses the lower (more conservative) of the two WT elevations for all cost and shoring calcs. Delta between sources is shown in the analysis panel.

Shoring costs

Method

Daily rental ($/day)

Mob / demob ($/job)

Sheet pile add-on ($/LF) — 0 if box only

Dewatering costs

Method

Pump rental + fuel ($/day)

Operator ($/day)

Wellpoint install ($/LF)

Contingency pump days

Trench cross-section

Fill sand / select fill

VDOT #57 stone

Native soil

Over-excavation

Water table zone

Shoring

Elevation analysis — NAVD 88

Water table — geotech vs field

Pipe invert vs water table

Materials — 100 LF

Shoring & dewatering