As per IS 456:2000 for M20 grade concrete and plain bars in tension the design bond stress τbd=1.2 MPa. Furthur, IS 456:2000 permits this design bond stress value to be increased by 60% for HYSD bars. The stress in the HYSD reinforcing steel bars in tension, σs=360 MPa. Find the required development length, Ld, for HYSD bars in terms of the bar diameter, ϕ._______.46.875

As per IS 456:2000 for M20 grade concrete and plain bars in tension th

1.	As per IS 456:2000 for M20 grade concrete and plain bars in tension the design bond stress τbd=1.2 MPa. Furthur, IS 456:2000 permits this design bond stress value to be increased by 60% for HYSD bars. The stress in the HYSD reinforcing steel bars in tension, σs=360 MPa. Find the required development length, Ld, for HYSD bars in terms of the bar diameter, ϕ._______.46.875
Answer» As per IS 456:2000 for M20 grade concrete and plain bars in tension the design bond stress $τ_{b d}$ =1.2 MPa. Furthur, IS 456:2000 permits this design bond stress value to be increased by 60% for HYSD bars. The stress in the HYSD reinforcing steel bars in tension, $σ_{s} = 360$ MPa. Find the required development length, $L_{d}$ , for HYSD bars in terms of the bar diameter, $ϕ .$ _______. 46.875