Direct Shear Test (Apparatus, Procedure, Calculation)

Shear strength is the ability of soil to withstand forces that may cause it to fail during sliding or shearing is known as shear strength. It is a measure of the soil’s resistance to these pressures. The balance between the applied shear force and the resistance offered by cohesion and friction determines the shear strength … Read more

Determine Liquid Limit of Soil Specimen by Casagrande Method

The liquid limit test of soil is a laboratory test used to measure the liquid limit of soil and its consistency when it is wet. This test is a part of atterberg limits test with plastic limit test as the other part. Liquid limit is defined as the water content at which a soil changes … Read more

High Strain Dynamic Pile Testing by Pile Driving Analyzer (PDA)

High strain dynamic testing is a method of testing deep foundations to obtain information about their capacity and integrity, and in some cases, to monitor their installation. It is codified by ASTM D4945-12 – Standard Test Method for High-Strain Dynamic Testing of Piles.High strain dynamic testing is called dynamic pile monitoring when it is applied … Read more

Pile Design and Construction Practice Book PDF by Michael Tomlinson & John Woodward

Piling rigs are a common place feature on building sites in cities and towns today. The continuous introduction of new, more powerful, and self-erecting machines for installing piled foundations has transformed the economics of this form of construction in ground conditions where, in the past, first consideration would have been given to conventional spread or … Read more

Pile Foundation Construction Procedure

We have already defined the pile foundation, its type and importance in case of low bearing ground conditions. But this post will mainly deal about the procedures and steps that are undertaken for the construction of pile foundation. Pile foundation construction procedure is not simple as it involves heavy machinery at times and requires fair … Read more