Why construction joints are not provided in residential buildings?
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various types of joints in construction are listed below;
Joints are used at:
The purpose behind the use of joint :
The reason behind not usage of construction joint in the residential building :
Construction joint is provided at where construction could not be done within a day like we have a long span of the slab and we have simple concrete mixture at that time we cannot construct the whole slab within one day, so we provide construction joint at the end of the day, next day we start work from that construction joint.
Basically in the residential building we have 1200 square feet slab area per one unit, that means we can easily do a slab work within a one day, so we do not need construction joint
Construction joints are provided
Construction joints should be avoided whenever possible. Monolithically cast sections perform better than sections with joints.
The reason why we don’t see construction joints in typical residential buildings is because
Construction joints are found in columns, but they may not be prominent because of the workmanship. Columns are generally cast in stages to a height of 1.2 m each time. Between each session, bond is ensured by providing a rough surface on the older section. This ensures the bond between the new layer and the old layer.
A construction joint is provided when concrete pouring needs to be stopped due to some reasons and then is continued again later but in residential buildings, it is not required. Construction joints are often at the ends of the beams, slabs, tie beams,etc. in such cases, for the purpose of future extension. So, it is not provided in residential buildings.