Standard Penetration Test SPT tools for Soil Test

Specifications

Standard Penetration Test SPT tools for Soil Test

I. Concept of SPT

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.

II. Description and Procedure

Standard Penetration Test, SPT, involves driving a standard thick walled sample tube into the 

ground at the bottom of a borehole by blows from a slide hammer with standard weight and falling 

distance. 

The sample tube is driven 150 mm into the ground and then the number of blows needed for the

tube to penetrate each 150 mm (6 in) up to a depth of 450 mm (18 in) is recorded. The sum of the

number of blows required for the second and third 6 in. of penetration is reported as SPT blowcount 

value, commonly termed  "standard penetration resistance" or the "N-value".
The N-value provides an indication of the relative density of the subsurface soil, and it is used in 

empirical geotechnical correlation to estimate the approximate shear strength properties of the soils.

III. Best partners for SPT tools

About DEFY:

FAQ:

1. Q:  How to buy?

    A:  After confirming the goods you will purchase,deposit for ordering the goods,then prodution---goods finished for confirmation,payment balance,and then shipment.

2. Q: What do I need to do after payment?

    A: a) If under FOB trading terms,you need to employ a ship forwarder to ship the goods to you;

         b) Under CIF trading terms,we send the goods to the destination port,and contact you to pick up the goods;All documents for customs clearance will be sent to you by international express after shipment.

3. Q: I am not familar with a new product,how to use it?

     A: We provide operation manual and DVD to guide you;we also provide Free training in our factory if you were possible to come;

         We provide engineers for overseas technic support;

         We provide 24 hours/7 days technic support all year around.

4. Q: How can I change the broken parts if the machine got broken?

    A:We provide some wearing parts for you when the first time you purchase goods from us;We also provide wearing parts for your choice.

        All accessories of our machinery is available at Factory-price all Year around.

Contact:

Please contact us for the price quotation and details of the drilling equipment according to your requirements. Different drilling rig models and Accessories are at Factory Price all year around ^_^

Ms. Sophie Nie

Mobile: 0086-15639080652

Office Tel: 0086-371-55819257

Email: sophie(at)

Skype: defy005

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