Soil boring with wash boring process service active standard ASTM D1587, Casing with a diameter about 50 to 100 mm and to a depth of 1.5 m to 3.0 m is directly driven into the soil surface. The casing is full of chopping bit tied on lower end of a wash pipe inner the casing in mandate to take away the soil.
At first water is compulsory through the wash pipe that appears adjacent the chopping bit through a small starting with a high speed. Due to the high rapidity of water, the soil is slashed into oddments and soil water gets up through ring area between the wash pipes and casing. the T-connection fixed at the top aids the assemblage of wash water in a pond made handy.
Soil boring a hole, the wash water again compiled is anew pumped through a hose into the wash pipe. As the method continues, a borehole is advanced and further casing pipe and drill rods are extra. A swivel head equipped between the water hose and water pipe so that the wash pipe and chopping bit can be distorted and pressured down whereby the borehole is advanced further into the soil of soil boring. But, while civil engineer drive the casing into the soil, the swivel head is eliminated. Following the same method frequently, a borehole of essential depth is obtained. This type of method of soil boring test is appropriate for all types of soil other than gravels and boulders.
And, to include more this process is very swift. For clayey soil, casing is unnecessary. Observing the slurry streaming out of the hole, civil engineer can predict the type of soil. Likewise, the change of color in the wash water predicts the change in rock strata layers of the soil.
Soil boring and soil samples are taken from the materials settled in the cesspit. But, the soil samples thus taken would be extremely disturbed and equips only a irregular forecast of the soil type. For adequate accuracy of the samples taken, we follow a suitable sampling procedure at any desired depth by replacing the chopping bit with a sampling tube.
For sufficient exactitude of the samples taken, we follow a appropriate sampling method at any imposed depth by substituting the chopping bit with a sampling tube. Mainly, this method is used for the preparatory soil boring moment of the exploration.