Answer / kamalraj

Minimum reinforcement
The mild steel reinforcement in either direction in slabs
shall not be less than 0.15 percent of the total crosssectional
area. However, this value can be reduced to
0.12 percent when high strength deformed bars or
welded wire fabric are used.

Longitudinal reinforcement
The cross-sectional area of longitudinal
reinforcement, shall be not less than 0.8 percent
nor more than 6 percent of the gross crosssectional
area of the column.

NOTE - The use of 6 percent reinforcement may involve
practical diffkulties in placing and compacting of concrete;
hence lower percentage is recommended. Where bars from
the columns below have to be lapped with those in the
column under consideration, the percentage of steel shall
usually not exceed 4 percent.

Answer / sarath naryan nair

For slabs = 1.0 % of concrete volume.
For Beam = 2 % concrete volume.
For column = 2.5 % of concrete volume.

Answer / kapil gupta

minimum percentage of steel used is 1.5% for 1 cum .
for ex-if we have to build a rcc slab having voloume 10 cum and to find steel used in this rcc in kg/m is -
density of steel =7850kg/cum
and 1.5% of steel is used so simply it is the product of 7850x0.015=117.75kg for 1 cum
now for 10 cum 117.5x10=1175kg.
so for 10 cum rcc 1175 kg steel is used.
*steel more than 2% is not right way as it is very different estimate for practical calculation.

Answer / akash sharma (ssitm aligarh)

max 4% in column nd 2%in slab

Answer / danish ahmed

For slab 1%
For beam 2%
For column 2 or 2.5%

Answer / shurbir rana

Column 1.5

Answer / n3

approximately
beam,slab=60kg/m3
column,footing=80kg/m3
ie 1 to 1.5%

Answer / m.haseeb yaquobi

(1 to 2)%

Answer / shajahan abdullakutty

4%-5%

silt maximum in sand.

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