Home / Services / Geotechnical / Portland, OR
Portland, Oregon
Geotechnical Engineering in Portland, OR
Around Portland, Willamette silts compress and pump wet of optimum, making moisture control the earthwork schedule. A drilling program around Portland replaces assumptions with samples, instead of assumptions borrowed from another Oregon job. Boring logs from Portland work read conditions, not hopes, with the report written for OR plan reviewers. Multi-state industrial clients bring us into Portland for defined programs, partnering with Oregon licensed professionals where sealed deliverables are required.
- Soil borings and sampling programs sized to the structure and site
- Laboratory index testing: Atterberg limits (ASTM D4318), moisture content (ASTM D2216)
- Moisture-density relationships and bearing evaluation for foundations and pavements
- Expansive-soil characterization for slab and pavement design
- Construction-phase verification: proof rolls, subgrade acceptance, fill placement observation
FAQ · Portland
Do I need a geotechnical report before building?
Most commercial permits, lenders, and structural engineers require a geotechnical report to establish allowable bearing pressure and foundation type. It is the least expensive insurance a foundation can have.
How long does a geotechnical investigation take?
A typical light-commercial site runs one to two weeks from drilling to final report, depending on lab test turnaround and access conditions.
Scheduling & proposals
Need geotechnical engineering in Portland?
Call for same-day dispatch questions, or send project documents for a written proposal.