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Salt Lake County, Utah
Geotechnical Engineering in Salt Lake County, UT
Subsurface investigations, laboratory soils testing, and geotechnical reporting to characterize site conditions before design and verify them during construction. Salt Lake County is covered on a project basis through our Salt Lake City, UT regional hub.
- Dispatched from
- Salt Lake City, UT regional hub · project-based staffing
- Lead time
- Scheduled by phone or proposal; lead time confirmed when the scope is set
- Laboratory
- Sugar Land, TX laboratory under chain of custody, or a mobile laboratory for large projects
- Reporting
- Reviewed and issued under a documented quality system; formatted for owner, engineer, and building-official review
- Serving
- Salt Lake County, UT — Salt Lake City, West Valley City, Provo
- Coverage
- Utah statewide · 27 regional hubs
- Technicians
- ACI- and NICET-certified field staff; licensed professionals in Utah
- Call us
- (346) 420-5425
Scope
Geotechnical services in Salt Lake County
- 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
ASTM D4318ASTM D2216ASTM D698ASTM D1557
Full scope, standards list, and pricing basis: Geotechnical Engineering.
Local conditions
Geotechnical conditions in Salt Lake County
Salt Lake County sits in a geologically active basin where alluvial fan deposits, lacustrine lake sediments left by ancient Lake Bonneville, and proximity to the Wasatch Front fault system combine to make subsurface variability a real design concern. Shallow groundwater in low-lying valley areas, expansive soils in some formations, and seismic design requirements under IBC Chapter 16 mean that characterizing site conditions before design is not a formality — it directly shapes foundation selection, earthwork specifications, and long-term performance. Our geotechnical services provide subsurface investigation through soil borings and test pits, laboratory testing of recovered samples, and engineering reports that translate subsurface data into actionable design parameters. Coverage is dispatched through our Salt Lake City regional hub on a scheduled and project-based basis, supporting residential subdivisions, commercial development, and civil infrastructure projects throughout the county.
Valley soils across Salt Lake County range from loose, potentially liquefiable sands and silts in former lake bed areas to dense alluvial gravels on higher fan terraces, making site-specific investigation more reliable than regional assumptions. Concrete placement schedules should also account for temperature extremes — cold winters and hot summers both affect curing and influence mix design recommendations.
FAQ · Salt Lake County
How does the Lake Bonneville geology affect what borings and tests I should order?
Former lake bed areas commonly contain soft, compressible, or loose silty and sandy sediments that may be susceptible to settlement or liquefaction under seismic loading. Borings in these zones typically include Standard Penetration Testing per ASTM D1586 to assess relative density and recovery of disturbed samples for gradation (ASTM D6913) and Atterberg limits (ASTM D4318), giving the engineer data needed to evaluate bearing capacity, settlement, and liquefaction potential site-specifically.
Salt Lake County is in a seismically active area — what geotechnical data do I need to satisfy IBC seismic requirements?
IBC Chapter 16 and ASCE 7 require site classification (Site Class A through F) based on average shear-wave velocity, SPT blow counts, or undrained shear strength in the upper 30 meters. Borings with ASTM D1586 SPT data are the most common method for establishing Site Class. Where liquefiable soils are suspected, liquefaction potential analysis is typically addressed in the geotechnical report and influences foundation system selection and site preparation requirements.
What laboratory tests are typically run on soils sampled from Salt Lake County sites?
Common tests include grain-size analysis (ASTM D6913 / D7928 for fines), Atterberg limits (ASTM D4318), moisture content (ASTM D2216), and standard or modified Proctor compaction (ASTM D698 / D1557). Where expansive soils are suspected, swell-consolidation testing may be added. The specific test program is selected based on boring logs, visual classification, and the design decisions the report must support. The laboratory operates under a documented quality system.
Which office covers geotechnical in Salt Lake County, UT?
Field work in Salt Lake County is dispatched through the Salt Lake City, UT regional hub. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large Salt Lake County projects.
Are the technicians you send to Salt Lake County certified?
Field sampling and testing in Salt Lake County are performed by our ACI- and NICET-certified technicians. Geotechnical engineering and professional services are delivered with professionals licensed in Utah, coordinated under one proposal.
Scheduling & proposals
Need geotechnical engineering in Salt Lake County?
Call to schedule a technician, or send project documents for a written proposal.