How do you calculate the area of a steel in RCC?

Minimum \% of steel as per Indian standard are:

1. Beam (Teinsion reinforcement): As = 0.85bd/fy of gross cross-section area.
2. Slab – 0.12\% of total area.
3. Column – 0.8\% of cs area.

How do you calculate the area of a steel in a concrete beam?

Calculate Steel quantity in slab as 1\% of volume of concrete = 0.01× 7850× 1= 78.50kg:- according to using Thumb Rule Steel quantity required for RCC slab should be 1\% of total volume of concrete, here steel density = 7850 kg/m3, so quantity of steel in 1m3 of concrete slab = 0.01× 7850× 1= 78.50kg, so, therefore 78.50 …

What is the area of steel in concrete?

The relative cross-sectional area of steel required for typical reinforced concrete is usually quite small and varies from 1\% for most beams and slabs to 6\% for some columns.

How do you calculate percentage of steel in RCC?

Calculate the percentage of reinforcement with the formula P = 8.33UA/t, where P is the percentage and t is the thickness. For example, the percentage of reinforcement of a 30-inch slab with two layers of No. 6 rebar spaced 4 inches on center is P = 8.33_6_0. 43/30 = 0.72 percent.

How do you calculate steel?

STEEL QUANTITY:

1. Weight of bar in kg/meter should be calculated as (d2 ÷ 162) where’d’ is the diameter of bar in mm.
2. ‘L’ for column main steel in footing should be considered as minimum 30cm/as specified.
3. For bent up bar add 0.42d in straight length of bar where’d’ is the clear depth of beam/slab.

How do you calculate the area of a steel column?

4) Asc = n×πD2/4, this formula is used to calculate area of Steel in RCC column if their size and number of steel is given. 5) D = √4Asc/nπ, this formula is used to find out diameter of Steel bar in RCC column if their area of Steel and their number is given.

How do you calculate area and volume?

Whereas the basic formula for the area of a rectangular shape is length × width, the basic formula for volume is length × width × height.

When is a reinforced concrete column subjected to axial load?

A reinforced concrete column is said to be subjected to an axial load when the line of the resultant thrust of loads supported by the column is coincident with the line of C.G. of the column in the longitudinal direction.

What is the minimum diameter of longitudinal reinforcement in column?

(iii) A column having helical binders must have at least six bars of longitudinal reinforcement within the helical reinforcement. (iv) The minimum diameter of the longitudinal bars shall not be less than 12 mm and the maximum diameter should preferably not exceed 50 mm.

What is the allowable axial load P on a composite column?

The allowable axial load P on a composite column consisting of structural steel or cast-iron column thoroughly encased in concrete reinforced with both longitudinal and spiral reinforcement shall not exceed that given by the following formula \\ [P = {\\sigma _ {CC}}.

What is the maximum percentage of steel in a concrete column?

In places where bars from a column below have to be lapped with those in the column to be provided above, the maximum percentage of steel should preferably not exceed 4\%. The object of fixing the upper limit of 6\% is to avoid such a concentration of steel as would create problems in placing and consolidation of concrete.