1. A beam has Top Bars, Middle bars and Bottom bars Under normal loading, the upper portion of the beam is under compression and the lower portion of the beam under tension. Concrete can withstand loads under compression and fail under tension Concrete is good at resisting Compressive loads whereas Steel is good at resisting tensile loads therefore to ensure that the beam can resist tensile forces in the tension zone, extra steel bars are added in the tension zone or area. As steel can be used in the compression zone to improve the strength of the beam, its not so much required to the same extent as it is required in the tension zone and that's simply why more steel bars are required at the bottom of the beam than at the top 2. At the beam and column joint, we provide TIES so that the whole Column has the TIES from the foundation up to the last floor up (So as to have a strong column) The Common mistake is that steel fixers do is not providing ColumnTIES at Beam and Column joint. The correct version is providing Column TIES right away from the starter bars in the foundation up to the Last floor of the building even at the beam and column joint without skipping any gap I hope that helps bro, incase of any clarification or any questions, be sure to reply back
The top part of beam at column is in tension(hogging) hence requires more bars than the bottom or what do you mean?
1. A beam has Top Bars, Middle bars and Bottom bars
Under normal loading, the upper portion of the beam is under compression and the lower portion of the beam under tension.
Concrete can withstand loads under compression and fail under tension
Concrete is good at resisting Compressive loads whereas Steel is good at resisting tensile loads therefore to ensure that the beam can resist tensile forces in the tension zone, extra steel bars are added in the tension zone or area.
As steel can be used in the compression zone to improve the strength of the beam, its not so much required to the same extent as it is required in the tension zone and that's simply why more steel bars are required at the bottom of the beam than at the top
2. At the beam and column joint, we provide TIES so that the whole Column has the TIES from the foundation up to the last floor up (So as to have a strong column) The Common mistake is that steel fixers do is not providing ColumnTIES at Beam and Column joint.
The correct version is providing Column TIES right away from the starter bars in the foundation up to the Last floor of the building even at the beam and column joint without skipping any gap
I hope that helps bro, incase of any clarification or any questions, be sure to reply back