What is codal provisions, Civil Engineering

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According to National Building Code (Sp:7 1970), the differential settlement shall be kept within the limits to which the superstructure can accommodate itself without harmful distortion, by suitably designing the foundation. Total settlement shall be so restricted or special arrangements made so that connections to the buildings such as drainage lines are not damaged. Allowable bearing pressure for footings on sand should be such that differential settlement does not exceed 1/300. This condition is generally satisfied if the total settlement is limited to 50 rnrn. For simple spread footings on clayey soils, the allowable bearing pressure should be such that the differential settlement does not exceed 1/300. This condition is generally satisfied if the total settlement is limited to 75 mrn.


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