Soil Sampler Tool Split Barrel Sampler Standard Penetration Test Equipment
Split Barrel Soil Sampler 2" compose of Sample Spoon Head , Split Tube , SPT Adaptor , SPT Shoe , Basket Retainer
SPT Sampler
Split Spoon
SPT Sampler
Split Spoon Sampler
Standard Penetration Test (SPT)
Standard Penetration Test Sampler
Standard Penetration Equipment
In order to carry out the Standard Penetration Test (SPT) to BS 1377:Part 9:1990. The Auto Trip Hammer, SPT Drive Rods and a Split Tube Sampler are worked together.
The basic operation of the complete set Standard Penetration Equipment are like the following sketch shows.
STANDARD PENETRATION TEST - SPT
The purpose of the Standard Penetration Test is to identify the soil stratification and engineering properties of soil layers. During the SPT, it was possible to take disturbed and undisturbed samples (using split barrel-sampler) which were used for further laboratory tests.
The in situ penetration test provides a soil sample for identification purposes and for the laboratory tests that allow the use of disturbed samples. The method of sampling soil consists of driving a split-barrel sampler to obtain a representative, disturbed sample and to simultaneously obtain a measure of the resistance of the subsoil to the penetration of a standard sampler. The resistance to penetration is obtained by counting the number of blows required to drive a steel tube of specified dimensions into the subsoil to a specified distance using a hammer of a specified weight (mass).
All pertinent borehole data, penetration resistance, and sample data must be recorded on a boring log data sheet. The depths at the top or bottom of each 150-mm increment of sampler penetration along with the number of blows required to affect that segment of penetration should be reported. Data obtained from SPT, N-value, is collected following some important steps:
1. preliminary test - number of blows for the 0- to 150-mm interval of sampler penetration;
2. real test – number of blows for the 150- to 300-mm interval and the 300- to 450-mm interval.
Hydraulic SPT automatic device, fitted on the drill mast side for an easy positioning over the SPT rods. Drop stroke 760 mm, drop weight 63,5 kg, with blows counter display on control panel.
Description of goods:
SPT Split Tube Sampler is for doing the Standard Penetration Test (SPT). We manufacture it according to BS 1377: Part 9: 1990. A Top ball valve Adaptor, a pair of Split Spoons, and an open SPT Shoe compose a complete set of SPT Sampler. Both plastic type and steel type basket retainers are available. The ball valve adaptor prevents sample from being washed out of the sampler when the sampler is withdrawn from the borehole. A 60 degree nose cone and long solid rod with 60 degree point are available as well. The screw connection on the top adaptor depends on the type of drill rods being used to drive the sampler, but is most frequently 1.1/2" B.S. Whitworth, NWY Rod, BW or AW Rod.
Composition:
Split Spoon compose of Sample Spoon Head, Split Tube, SPT Adaptor, SPT Shoe, Basket Retainer.
Specifications:
The standard Split Tube Sampler is 2" (50.8 mm) OD x 1.3/8" (34.9 mm )ID x 18” (457mm)/ 24" (610 mm) long. For heavy driving conditions, the Heavy-duty "Tuflok" design is available.
