Why hook is provided in stirrups
- To prevent from buckling of column.
- The main requirement for safety against bond failure is it provide a sufficient extension of the length of the bar beyond the point where the steel is required to develop its yield stress and this length must be at least equal to its development length. However, if the actual available length is inadequate for full development, special anchorages must be provided, such as cogs or hooks or mechanical end plates.
- Hooks are provided for to resist seismic movement.
- To prevent concrete from splitting outward.
- It prevent slippage of steel from the concrete.
- To Keep longitudinal steel bars in position and hold steel tightly.
This civil engineering article provides brief insight about why the hooks are provided in stirrups.
Hook is offered in stirrups for the subsequent purposes:
- To avert buckling of column.
- The major need for protection against bond breakdown as it offers an adequate expansion of the bar length above the point wherein/where the steel is needed to grow its yield stress as well as the length should be as a minimum up to its development length.
- Hooks are offered for to oppose seismic movement.
- To avert concrete from partitioning externally.
- It averts steel slippage from the concrete.
- To maintain longitudinal steel bars in place as well as keep steel firmly.
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