Civil Engineering - RCC Structures Design - Discussion
Discussion Forum : RCC Structures Design - Section 1 (Q.No. 15)
15.
Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than
Discussion:
13 comments Page 2 of 2.
Sameer sopori said:
7 years ago
If we erect the steel for a column and footing, let's take 6 bars for the column. So we need to bend (90 °) these bars near the bottom and insert them into the footing. BUT BARS INSIDE THE FOOTING SHOULD BE MORE THAN 42 Times the diameter of the bar.
Let's consider our bar is 16mm, so we need to insert 42 *16= 672 mm into the footing, obviously, its counted from the bend or you can say the outer edge of the column.
And we have to do it with all 6 bars which we consider here.
Let's consider our bar is 16mm, so we need to insert 42 *16= 672 mm into the footing, obviously, its counted from the bend or you can say the outer edge of the column.
And we have to do it with all 6 bars which we consider here.
(2)
UPSC Aspirant said:
7 years ago
What do they mean by inner edge of column? Is it the Top of Column?
Please explain.
Please explain.
Syed Adnan Aqib said:
5 years ago
Column bars transfer load to bottom of footing slab through compression action.
So the compression development length shall govern here which is normally 18xD and 21xD based on steel grade and concrete strength.
So the compression development length shall govern here which is normally 18xD and 21xD based on steel grade and concrete strength.
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