Rebound hammer test (Schmidt Hammer) is used  to  provide  a  convenient  and rapid indication of the compressive strength of concrete. It consists of a spring controlled mass that slides on a plunger within a tubular housing. The operation of rebound hammer is shown in the fig.1. When the plunger of rebound hammer is pressed against […]

Calculate Quantities of Materials for Concrete

Quantities of materials for the production of required quantity of concrete of given mix proportions can be calculated by absolute volume method. This method is based on the principle that the volume of fully compacted concrete is equal to the absolute volume of all the materials of concrete, i.e. cement, sand, coarse aggregates and water. […]

Interpretation of Concrete In-Situ Test Results for Strength Strength Assessment

Concrete in-situ test results interpretation is important for structural strength assessment. Concrete test results interpretation consists of three stages from which proper conclusion are developed and its applications is discussed. In this article, different steps of result of concrete in-sit tests are discussed. Interpretation of Concrete In-Situ Test Results Computation of in-situ concrete test results […]


Deep foundations are those where the depth of foundation is generally greater than two times of width of footing (D = 2B). Deep foundations are required due to various reasons. Read here about why deep foundations are required and types of deep foundations. The soil tests required for deep foundations are: 1. While the composition […]