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what is the formula of development length. Generally in practice the development length requirement is expressed as 41 times O or 41 O where 41 is the factor calculated using the above formula O is the dia of the bar. In simple words the quantity of the rebar length that is actually required to be embedded into the concrete to achieve the desired bond strength between concrete and steel by producing required stress for the steel in that area.
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The development length Ld of a bar is calculated as following. According to IS 4562000 the calculated tension or. Development length formula L d is given by Where Notes.
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Ps e modifier for epoxy. Page 1 of 5. For compatibility with older ACI codes PSr is taken as 10. L d s4t bd where L d Development length diameter of bar.
