Steel Bar In Column

Max bar spacing in concrete columns dik structural 12 sep 10 21 14.

Steel bar in column. Compute total length of longitudinal bars which equal to the column height plus laps for footing multiply number of longitudinal bars. Finding out the steel quantity required for the neck column is already discussed in our previous article. Over lapping of the steel bar is very important and necessary at the site because we don t have a single long bar. The main bars is 12 mm 150 c c and distribution bar is also 12 mm 150 c c.

We know that each bar is 12 25 m or 40 feet length approx. How to approximately calculate quantity of steel bars in beams columns and slab without bar bending schedule steel bar weight quantity of steel bars calculation of steel bar in slab beam column steel in concrete. And the part of the column which is inside of substructure is called neck column. The footing clear cover is 50 mm from the top and 75 mm from the bottom.

Achieve column size and reinforcement detailing from design drawings. We must over lap the bar to make continuit. The part of the column which projected towards the sky on the superstructure is called floor columns. Length of 1 bar 4000 mm 40d where d is dia of bar 4000 40 x 16 4000 640 4640 mm or 4 640 m ans.

Calculate the number of steel is going to use in this column footing. Now we know the length of one vertical bar. Calculate steel quantity for columns. As we know that lapping length required is 50d 50 diameter of the bar 50 20 1000 mm.

We have total bar six bars total length 6 x 4 640 27 84 m long vertical. Then compute quantity of steel in the column using the following steps. Normally column reinforcement drawings won t come with lapping details. Length of 1 bar h l d.

The length one vertical bar is 4 640 m. Bar bending schedule of a floor column. H height of column. Step 2 find out lapping.