Laboratory Testing
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Mr. Devin is able to perform a range of Standard Geotechnical Laboratory Testing in-house as a component of his geotechnical consulting services. Such services are not available to clients outside of this framework. Mr. Devin does not provide construction materials testing QA/QC services.
Many of the tests listed below are performed in-house but they may also be sub-contracted to an outside laboratory. This is particularly true of the laboratory volume change (consolidation, expansion, etc), strength, and permeability tests.
Field tests are also listed along side the laboratory tests below for convenience.
Soil, Rock, and Aggregate Testing
Classification / Aggregates
- Particle-Size Analysis of Soils (ASTM D 422 / D 6913)
- with Hydrometer
- without Hydrometer
- Hydrometer alone on minus No. 10 or minus No. 40
- Amount of Materials in Soils Finer Than the No. 200 (75-mm) Sieve (ASTM D 1140)
- Specific Gravity of Soil Solids by Water Pycnometer (ASTM D 854)
- Water (Moisture) Content of Soil and Rock by Mass (ASTM D 2216)
- Liquid Limit, Plastic Limit, and Plasticity Index of Soils (D 4318)
- Specific Gravity and Absorption of Coarse Aggregate (ASTM D C 127)
- Specific Gravity and Absorption of Fine Aggregate (ASTM D C 128)
- Sand Equivalent (ASTM D 2419)
Compaction
- Laboratory Compaction Characteristics of Soil Using Standard Effort (ASTM D 698)
- with TDR (ASTM D 6780 Method B) Soil Constants Determination
- Laboratory Compaction Characteristics of Soil Using Modified Effort (ASTM D 1557)
- with TDR (ASTM D 6780 Method B) Soil Constant Determination
- Compaction Check Point (4 inch or 6 inch mold)
- Water Content and Density of Soil in Place by TDR (ASTM D 6780)
- Density and Unit Weight of Soil in Place by the Sand-Cone Method (ASTM D 1556)
- Density and Unit Weight of Soil in Place by the Rubber Balloon Method (ASTM D 2167)
- Oversize Material Correction (ASTM D 4718)
Strength
- Unconfined Compressive Strength of Cohesive Soil (ASTM D 2166)
- Point Load Strength Index of Rock (ASTM D 5731)
- Rock Hardness by the Rebound Hammer Method (ASTM D 5873)
- Direct Shear Test of Soils under Consolidated Drained Conditions (ASTM D 3080) (subcontract)
- Unconsolidated-Undrained Triaxial Compression Test on Cohesive Soils (ASTM D 2850) (subcontract)
- Consolidated Undrained Triaxial Compression Test for Cohesive Soils (ASTM D 4767) (subcontract)
- Compressive Strength and Elastic Moduli of Intact Rock Core Specimens (ASTM D 7012) (subcontract)
Volume Change (Consolidation / Swell / Collapse)
- Expansion Index of Soils (ASTM D 4829)
- One-Dimensional Consolidation Properties of Soils (ASTM D 2435)
- One-Dimensional Swell or Settlement Potential of Cohesive Soils (ASTM D 4546)
- Collapse Potential of Soils (ASTM D 5333)
Hydraulic Conductivity / Permeability
- Hydraulic Conductivity of Porous Material Using a Flexible Wall Permeameter (ASTM D 5084) (subcontract)
- Hydraulic Conductivity of Porous Material Using a Rigid-Wall, Compaction-Mold Permeameter (ASTM D 5856)
- Permeability of Granular Soils (Constant Head) (ASTM D 2434)
- Infiltration Rate of Soils in Field Using Double-Ring Infiltrometer (ASTM D 3385) (pending)
- Hydraulic Conductivity in the Vadose Zone using the Guelph Permeameter – Standard Guide for Comparison of Field Methods for Determining Hydraulic Conductivity in Vadose Zone (ASTM D5126)
- Field Permeability in an Open Standpipe Piezometer (Slug Test)
- Percolation Test
Pavement Section (Base Course / Subbase Course / Subgrade)
- CBR (California Bearing Ratio) of Laboratory Compacted Soils (ASTM D 1883)
- Three Compactive Efforts at Optimum Water Content
- Three Compactive Efforts at Range of Water Contents
- Dynamic Cone Penetrometer in Shallow Pavement Applications (ASTM D 6951)
Site Characterization
- Subsurface Exploration / Site Characterization
- Manual Static (Dutch) Cone Penetration Test (CPT) (depths to 20 feet)
- Dynamic Cone Penetration Test (DCPT) (15 lb hammer falling 20 inches) (depths to 20 feet)
- Field Vane Shear Test (VST) on Cohesive Soil
- Test Pit Excavation
- Exploratory Boring
- Electrical Resistivity – Four Electrodes, Manual Data Collection
- Subsurface Exploration Sampling and Logging
- Surficial Geologic Reconnaissance
- Rock Mass Characterization for Engineering Purposes including
- Discontinuity Survey, Joint Roughness, and Joint Wall Compressive Strength
- Site Characterization for On-Site Septic Systems (ASTM D 5879, D 5925, and D 5921)
Groundwater Level Monitoring
- Piezometer Installation
- Drive Point, Boring, or Test Pit
- Water Level / Pore Water Pressure Monitoring
- Periodic Manual Vibrating Wire Piezometer Continuous Data Logging
- Groundwater Quality Monitoring
Important Note: Testing services identified as “pending” are currently unavailable. These services may be available at a future date. Please contact us for current and/or anticipated availability of these services. Some services described herein may be subcontracted as required.