Refaat Faraj
Structural
- Jan 14, 2024
- 3
Dear Colleagues,
I want to increase the deep beam capacity due to the high shear generated by the concentrated beam located at the mid-span of the deep beam (please refer to the attached picture).
It is worth noting that the deep beam dimensions are 4000 mm wide and 2150 mm high (including a 300 mm slab thickness), while the concentrated beam dimensions are 500 mm wide and 1500 mm high (also including a 300 mm slab thickness).
Therefore, I suggested adding a new concrete part above the deep beam and connecting both parts using U-shaped reinforcement, in order to increase the deep beam’s capacity. This is because there is no possibility of doing any work beneath the deep beam due to the presence of a door.
Kindly, I would like to know whether this solution actually increases the deep beam's capacity, or if it simply adds additional self-weight to the beam without providing real benefit?
Thank you in advance for any help.
Refaat

I want to increase the deep beam capacity due to the high shear generated by the concentrated beam located at the mid-span of the deep beam (please refer to the attached picture).
It is worth noting that the deep beam dimensions are 4000 mm wide and 2150 mm high (including a 300 mm slab thickness), while the concentrated beam dimensions are 500 mm wide and 1500 mm high (also including a 300 mm slab thickness).
Therefore, I suggested adding a new concrete part above the deep beam and connecting both parts using U-shaped reinforcement, in order to increase the deep beam’s capacity. This is because there is no possibility of doing any work beneath the deep beam due to the presence of a door.
Kindly, I would like to know whether this solution actually increases the deep beam's capacity, or if it simply adds additional self-weight to the beam without providing real benefit?
Thank you in advance for any help.
Refaat
