Dear Melkamu

As already pointed out, it depends on the type of slab, and also in which country

In the UK, the price of RC is typically 150 pounds per cubic meter

Dear Melkamu,

There is no direct formula for your question, you have to estimate the concrete dimensions of all elements to get the percent of slabs.

RC slab volume depends on its depth and accordingly on its configuration (structural system,span, load and material) you can refer to my paper below.

Generally, for residential building the average floor volume / m2 (Flat slab or solid slabs with beams) is about (0.25 to 0.30 m3/m2), while the  the average vertical elements  volume / m2 is about (0.05 to 0.10 m3/m2). Foundation volume is usually about (25 to 30%) of the superstructure volume.

So, let us say that you have 6 floor residential building, the total volume / m2 is:

V min = 6 x 1.25 x (0.25 + 0.05) = 2.25 m3/m2  and floor % = (6 x 0.25)/2.25 = 67%

V max = 6 x 1.30 x (0.30 + 0.10) = 3.12 m3/m2  and floor % = (6 x 0.30)/3.12 = 58%  

Hence, the approximate answer to your question is about  60-65%

I hope this helps you

good luck

Article Estimating the Economic Quantities of Different Concrete Slab Types

Dear Ahmed Ebid, Messaoud Saïdani, Peter E.D Love

I really thank you for your prompt responses!

I was doing my masters thesis on solid slab analysis methods, which are provided in the codes and with finite element methods (commercial software). I want to show how the analysis methods of slab affect the amount of moment and the result differences among different methods. Beside this, I want to show how this difference of moment affect the cost of the slab and all the building cost so far.

My intention is how much will be the average percentage cost of solid slabs in relative to the total building cost. So, any body who have experience in cost estimation of the building, please help me by sharing your experience.

Dear Ahmed Ebid

I thank you once again for sharing your paper and for your important answer!