Raft foundation- Advantages, Disadvantages, and Methods of Design

raft foundation

What is Raft foundation? Raft foundation is the monolithic RCC slab of uniform thickness provided throughout the entire area below the superstructure, which supports all arrangement of wall and column.  Thus, it acts as a structural mat, which supports the above structure, therefore, popularly also known as Mat foundation. Raft foundation is a type of …

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California bearing ratio test (CBR) – Procedure, formula, and Significance

California bearing ratio test

Definition California bearing ratio test (CBR) is defined as the ratio force per unit area which is required to penetrate a mass of soil with the standard circular piston at a rate of 1.25 millimeters per minute to that required for corresponding penetration of standard material. The table given below the standard loads adopted for …

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Direct shear test- Procedure, Calculation, and drawback of direct shear test

Direct shear test- Procedure, Calculation, and drawback of direct shear test

What is the direct shear test and why it is required? Shearing strength of the soil is the magnitude of maximum shearing resistance offered by the soil when subjected to shear stress. The friction and interlocking of soil particles cause shearing resistance in soil. This Shearing resistance between soil may be due to chemical bonding …

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