Question { 11301 }

Can we weld hot rolled steel ASTM A615 ?

Answer

A 615 is a high carbon steel. As you have seen in other posts, A615 IS technically weldable, but A615 is not widely welded because of the procedure requirements to weld it.

Generally A706 is specified for weldable rebar to avoid the AWS welding procedures required for A615 rebar.

Question { HSCL, 397975 }

how to calculate the steel for rcc slab?
plz tell me the formula for calculating the steel?

Answer

Two Methods, First from Calculation, 2nd using SP16
1st Method Compute K= Mu/(fcu x b x d^2)
for Fy = 415 if K<= 0.138 Singly Reinforced

Calculate Z/d = 0.5 + sqrt { 0.25 - K/0.865}

Area of Steel = Mu / { 0.87 x fy x Z }
Z is Lever Arm Distance Between CG of Tension and Compression Force

2nd Method
Calculate Mu /{b x d^2}
Check Table 2 to 5 of SP16 based on Concrete Grade
It gives Percentage of Steel Pt for given Grade of Concrete,steel and Mu/{bxd^2}