Question
Download Solution PDFThe anchorage value of a bar depends on:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
The anchorage value of a bar depends on the development length and the diameter of the bar.
Development length
- The development length is the length of the rebar that must be embedded or anchored in the concrete to develop its full tensile capacity.
- It ensures that the rebar does not pull out or fail prematurely when subjected to loads.
- The calculated tension or compression in any bar at any section shall be developed on each side of the section by an appropriate development length or end anchorage or a combination thereof.
- Development length can be calculated as:
\(L_d= \frac {\phi \times 0.87f_y}{4 \tau_{bd}}\)
where \(\phi= \) Diameter of bar
\(\tau_{bd}\)= Design bond stress
Additional InformationAnchorage values based on diameter.
As per Clause 26.2.2.1 b of IS 456-2000
| Anchorage Value of Bends & Hooks | ||
| Bends | 45° | 4 d |
| 90° | 8 d | |
| 135° | 12 d | |
| Hooks | U type Hook (180°) | 16 d |
d = diameter of bar
Last updated on May 9, 2025
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