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 Lab Certificate #3087.01 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 Lab Certificate #3087.01 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
