Where is the Construction Joint is to be provide in Raft ? if required.

1. Construction joint shall be provided preferably at a location where stress are zero

2. Construction joint is provided at one-third or end of support.

3. Also provide key and rebar to transfer shear stress if shear stress is not zero at point of construction joint.

4. Provide construction joints as minimum as possible.

5. Construction joint shall not be left on discretion of contractor. It must be approved by designer.

CONSTRUCTION JOINT BROVID IN RAFT AT THE LINE BETWEEN BIGE DIFFRENCE OF  HIEGHT TO REDUCE THE CRACKS DUE TO DIFFRENT SETTLEMENT