How do you calculate rebar?

You have to find a chart that will indicate the weight per unit of measure for the appropriate rebar size. Than take that and multiply it by the the length of the rebar. For example, a #4 rebar...

The length is calculated by a number of factors. The most basic example is as follows. Say a bar is required to be u shaped. It is to be placed in a 12" wide block. The bar bend would be the length...

Their are many ways to calculate the things in right way. Try to use calculator or some kind of small paper in your hand if you need to calculate things in hurry.

There is no English word "gorsspay," so this question does not have an answer. The best I can figure is that you are asking about "Gross Pay." If that is the case, then you just look at your pay stub...

1 kN is approximately 101.97kg falling at a rate of 1m per second. Check out the conversion calculator at www.convertworld.com/en/weight/Kilonewton.html