Our Services
Construction Materials Laboratory
Our Services
Construction Materials Laboratory
Our services include:
Soil Testing
NTI’s in-house laboratory has been inspected and approved by the Oregon Building Officials Association (OBOA), the City of Portland Bureau of Development Services (COP-BDS), the American Association for Laboratory Accreditation (A2LA Scope of Accreditation), the Washington Association of Building Officials (WABO), the Oregon Department of Transportation (ODOT), and the U.S. Army Corps of Engineers (USACE).
Soil Testing
- Atterberg Limits ASTM D4318; AASHTO T89/T90
- California Bearing Ratio (CBR) ASTM D1883; AASHTO T193
- Constant Head Permeability of Granular Soil ASTM D2434
- Consolidation ASTM D2435; AASHTO T216
- Collapse Potential of Soils ASTM D5333
- Direct Shear (3 points) ASTM D3080; AASHTO T236
- Residual Direct Shear
- Expansion Index UBC 29-2 ASTM D4829; AASHTO T258
- Flexible Wall Permeability ASTM D5084
- Moisture Content ASTM D2216; AASHTO T265
- Moisture Content and Dry Density
- Moisture Density Relationship - Modified ASTM D1557; AASHTO T180
- Moisture Density Relationship - Standard ASTM D698; AASHTO T99
- No. 200 Wash ASTM D1140
- Organic Content ASTM D2974; AASHTO T267
- Particle Size Analysis of Soil (Hydrometer) ASTM D422
- pH CalTrans 643; AASHTO T289
- Resistance R-Value ASTM D2844; AASHTO T190
- Resistivity – Minimun CalTrans 643; AASHTO T288
- Specific Gravity of Soil ASTM D854; AASHTO T100
- Swell or Settlement (One-Dimensional)
- Potential of Cohesive Soils ASTM D4546
- Triaxial Compression Test AASHTO T296
- Unconsolidated-Undrained ASTM D2850
- Consolidated Undrained D4767
- Unconfined Compression of Soil ASTM D2166; AASHTO T208
- Unconfined Compression of Rock Cores ASTM D4543/D7012 Method C
Soil Testing
NTI’s in-house laboratory has been inspected and approved by the Oregon Building Officials Association (OBOA), the City of Portland Bureau of Development Services (COP-BDS), the American Association for Laboratory Accreditation (A2LA Scope of Accreditation), the Washington Association of Building Officials (WABO), the Oregon Department of Transportation (ODOT), and the U.S. Army Corps of Engineers (USACE).
Soil Testing
- Atterberg Limits ASTM D4318; AASHTO T89/T90
- California Bearing Ratio (CBR) ASTM D1883; AASHTO T193
- Constant Head Permeability of Granular Soil ASTM D2434
- Consolidation ASTM D2435; AASHTO T216
- Collapse Potential of Soils ASTM D5333
- Direct Shear (3 points) ASTM D3080; AASHTO T236
- Residual Direct Shear
- Expansion Index UBC 29-2 ASTM D4829; AASHTO T258
- Flexible Wall Permeability ASTM D5084
- Moisture Content ASTM D2216; AASHTO T265
- Moisture Content and Dry Density
- Moisture Density Relationship - Modified ASTM D1557; AASHTO T180
- Moisture Density Relationship - Standard ASTM D698; AASHTO T99
- No. 200 Wash ASTM D1140
- Organic Content ASTM D2974; AASHTO T267
- Particle Size Analysis of Soil (Hydrometer) ASTM D422
- pH CalTrans 643; AASHTO T289
- Resistance R-Value ASTM D2844; AASHTO T190
- Resistivity – Minimun CalTrans 643; AASHTO T288
- Specific Gravity of Soil ASTM D854; AASHTO T100
- Swell or Settlement (One-Dimensional)
- Potential of Cohesive Soils ASTM D4546
- Triaxial Compression Test AASHTO T296
- Unconsolidated-Undrained ASTM D2850
- Consolidated Undrained D4767
- Unconfined Compression of Soil ASTM D2166; AASHTO T208
- Unconfined Compression of Rock Cores ASTM D4543/D7012 Method C
