Standard Penetration Test (SPT)
GPTKB entity
Statements (32)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Geotechnical investigation method
|
| gptkbp:alternativeTo |
gptkb:Cone_Penetration_Test_(CPT)
Dynamic Probing |
| gptkbp:application |
Foundation design
Liquefaction assessment Site investigation Soil classification |
| gptkbp:depthInterval |
Typically every 1.5 meters
|
| gptkbp:developedBy |
gptkb:United_States
1927 |
| gptkbp:equipment |
Drilling rig
Drop hammer Split-spoon sampler |
| https://www.w3.org/2000/01/rdf-schema#label |
Standard Penetration Test (SPT)
|
| gptkbp:limitation |
Disturbs soil sample
Not suitable for very soft or very hard soils Results affected by operator technique |
| gptkbp:measures |
Relative density of granular soils
Soil density Soil resistance to penetration Soil strength |
| gptkbp:N-value |
Number of blows required to drive sampler 30 cm
|
| gptkbp:output |
SPT N-value
|
| gptkbp:processor |
Driving a split-barrel sampler into the soil at the bottom of a borehole
|
| gptkbp:purpose |
Determine soil properties
|
| gptkbp:region |
Worldwide
|
| gptkbp:standardizedBy |
gptkb:ASTM_D1586
|
| gptkbp:type |
Disturbed sample
|
| gptkbp:usedIn |
Geotechnical engineering
Soil mechanics |
| gptkbp:bfsParent |
gptkb:SPB
|
| gptkbp:bfsLayer |
6
|