Home / Services / Geotechnical / Multnomah County, OR
Multnomah County, Oregon
Geotechnical Engineering in Multnomah County, OR
Wet-season grading near Multnomah County lives or dies on moisture-density testing windows. Laboratory testing on Multnomah County borings feeds the design calculations directly, giving Oregon designers the inputs calculations actually need. Expansive soil screening on Multnomah County parcels happens before slabs commit, and the OR recommendations follow the data. Our Multnomah County coverage is built around defined scopes and honest travel, 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 · Multnomah County
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 Multnomah County?
Call for same-day dispatch questions, or send project documents for a written proposal.