Brief overview of the cross bars reinforcement at columns
Cross bars in slab at columns are used for any large water-table that is located just underneath the structure to lower bending because of the upraised pressure of Water.
Given below a sample image that will facilitate the civil engineers to recognize the cross bars reinforcement at columns.
All reinforcement should have been free from mill scales, loose rust & coats of paints, oil or any other substances.
Main bars in the slabs must be below 8 mm (HYSD) or 10 mm (Plain bars) and the distributors not below 8 mm and not surpassing 1/8 of slab thickness.
The detailing requirements of a reinforcement bar are based on the reasons for its containment in the structure.
Reasons comprise:
1. To bear internal tensile forces, thus conveying strength and ductility; 2. To handle flexural cracking; 3. To handle direct tension cracking in restrained structures; 4. To transmit compressive forces; 5. To offer restraint to bars in compression;
Image Courtesy: engineeringcivil.com
6. To arrange for confinement to concrete in compression;
7. To restrict longstanding deformation; 8. To safeguard against spalling 9. To offer temporary support for other reinforcement throughout construction.
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