Formula for Development Length
the Formula for development length is provided in both Indian standard IS 456:2000 and American Standard ACI 318-14. In this article, we will learn about the formula for development length as per IS 456:2000
As per IS-456:2000 Clause 26.2.1, the development length Ld is given by
Ld = ( Ø σs ) / 4 τbd
OR
Ld = (Nominal dia of steel x Stress in the bar at the section considered at design load) / ( 4 x Design bond stress (Will be extracted from Table 26.2.1.1)
Where,
Ø = nominal dia of reinforcement bar;
σs = Stress in the bar at the section considered at design load;
τbd = Design bond stress (Will be extracted from Table 26.2.1.1)
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