what are the thumbrules for calculating various building materials in Commercial building like steel, cement, shuttering ply etc per sq.ft?

For residential building cement will be 0.4 Kg per sq.f. & steel will be 4.5 Kg per sqf. For Shuttering ply it will be 10 sq.m. per cum of concrete.

Dear All,

According to me, Steel & concrete depends on 

1)  Configuration of the structure like Basements if any, + Ground + no of stories above ground floor.

2) Functional use of structure like residential, commercial, rehab building.

3) Shape of structure like regular shape, curved, with lots of offsets, etc....

Harnam,I feel The steel for slabs @80-100 looks high unless we are taking flat slabs into account,beams can be a little higher at 350kg/m3

These thumbrules vary from project to project.first it depends on you that how you calculate.you have to measure drawing area, check quantity of steel or concrete and then you can get the answer. if u go by thumbrule it will mislead you.or you can instruct site engineers about the consumption of the materials of a particular structure for at least six month so that you can calculate the ratio and productivity .

for foundation you can take 100 kg of steel per cubic meter of concrete.

SORRY NOT BY MS PREETHA BUT BY MR. RAJISH

THE THUMRULE NORMS WHICH WAS GIVEN BY ME USED TO BE ADOPTED BY MASONS IN SUBURBEN AREA'S,NOT FOR BIG BUILDINGS,I THINK PREETHA HAS THUMBDOWN IT UNKNOWINGLY.

iN MY OPENION CONSUPTION OF STEEL REINFORCEMENT BY THUMB RULE IS VERY HIGH THAN PRESENT CAD,AND SHOULD NOT BE FOLLOWED,FOR EXAMPLE FOR SLABS OF RESIDENTIAL BUILDING IS 11KG/SQFT BUT AS PER CALCULATION IT'S MAX 6KG/SQFT THAT IS TOO FOR 12X17 ROOMSIZE.

For  ORDINARY  RESIDENTIAL SLABS  IT  CAN BE 1KG/ 10 DM3.. FOR BEAMS AND COLUMNS IT VARIES AS PER THE DESIGN ,BETTER DON'T APPLY THUMBRULE HERE