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Standard Penetration Soil SPT Test Sampler
It is used to determine the bearing capacity of all kinds of soil, find out uniformity coefficient of soil In the horizontal and vertical directions, confirm location of Pile foundation bearing layer and Estimate the bearing capacity of single pile.
Standard Penetration Soil SPT Test Sampler Introduction
Standard Penetration Soil SPT Test Sampler
It is used to determine the bearing capacity of all kinds of soil, find out uniformity coefficient of soil In the horizontal and vertical directions, confirm location of Pile foundation bearing layer and Estimate the bearing capacity of single pile.
Using hammer energy, infiltrate special Cone probe into soil. We can distinguish engineering properties of soil according to the complexity of infiltration.
evaluation index use blow counts when Injection to some depth. It is main way to test Coarse grained soil.
| type | light | heavy (duty) | |
| probe specifications | diameter | 40mm | 74mm |
| sectional area | 12.6 cm2 | 43 cm2 | |
| taper angle | 60° | 60° | |
| drop hammer | weight | 10kg | 63.5kg |
| drop distance | 50cm | 76cm | |
| feeler lever diameter | 25mm | 42mm | |
| test index N | injection30cmblow countsN10 | injection 10cmblow counts N63.5 | |
| Applicable soil type | Shallow fill soil, sand and silt clay | Sand, and gravel soil and soft rock | |
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