Rebar weight related 1

[Vikasgkothari]

I am a chemical engr but presently looking after petrochem project construction cordination.I came across a typical problem. All the rebars used in silo structure are less than normal weight i.e. in the range of 94% to 97%. Individually they are acceptable but are the collectively OK

 

[MiketheEngineer]

Is the design 6% over that required?? Probably and then you are OK

 

[hokie66]

frv,

When considering ring tension in silos, tanks, etc., it is normal practice to use maximum reinforcing stresses due to service loads, a different approach from ultimate strength design. This is to limit crack widths. Elongation of the reinforcement is PL/AE, so the area is the important thing, not the ultimate or yield strength of the bar.