Weight of Precast Unit.
Weight of Precast Unit.
(OP)
Hi Engineers,
In calculating the weight of a precast unit is it the volume of concrete by the reinforced density of concrete only or is the volume of concrete by the the reinforced density of concrete plus the weight of rebar. I need clarification please.
In calculating the weight of a precast unit is it the volume of concrete by the reinforced density of concrete only or is the volume of concrete by the the reinforced density of concrete plus the weight of rebar. I need clarification please.





RE: Weight of Precast Unit.
RE: Weight of Precast Unit.
I've occasionally used 160pcf for heavily reinforced sections, and I've once accounted for the actual weight and ratio of reinforcement (when the CG of a bridge section with concrete deck and steel truss members was critical to the operation).
RE: Weight of Precast Unit.
You could get the density of the mix and multiply it by the volume of concrete MINUS all the volume of reinforcement, stirrups, etc. Then add to that the volume of steel times about 490pcf to get a total, but you'll find that it it usually isn't worth your trouble.
RE: Weight of Precast Unit.