Is it necessary to add a plinth beam between two columns, constructed for installing an iron gate?
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A Beam(usually RCC member) which is constructed in between the wall and foundation is called a plinth beam.
Purpose of plinth beam:
Reason behind construction of plinth beam inbetween two columns constructed for installing an iron gate are as follows;
If the columns and their foundations have been designed considering the loads (direct force and moment) from the iron gates then a tie beam at ground level is not necessary.
But a tie beam can help in reducing the foundation width in one direction as this beam will help to prevent overturning in one direction (if the columns are not joined by plinth beams towards wall boundaries). Another benefit of a tie beam is the extra strength provided in case of impact by a vehicle to the columns.
Yes, It is required to install a plinth beam between two columns, which used for installing an iron gate. The reason to provide it is when the vehicle comes closer to the iron gate and passes through the gate, a load of the vehicle is acting on that beam, and the beam will be able to resist the load. If we can’t install beam between two columns, the land depressed at that location and this may impact your gate and if soil bearing capacity is not enough then maybe iron gate collapse.