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Standard Penetration Test blow counts do not represent a simple physical property of the soil, and thus must be correlated to soil properties of interest, such as strength or density. There exist multiple correlations, none of which are of very high quality.

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The standard weight of the hammer is lbs.( N) the number of blows required for spoon penetration of three "6" inches (15 cm) intervals is recorded. The number of blows required for the last two intervals are added to give the standard penetration number at that depth. Read More: Curing of Concrete - Its Methods, Time, & Requirements.

The Standard Penetration test (SPT) is a common in situ testing method used to determine the geotechnical engineering properties of subsurface soils. It is a simple and inexpensive test to estimate the relative density of soils and approximate shear strength parameters.

Views: 28049 Date: 27.05.2019 Favorited:94
Category: Penetration

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