Concrete deep beams
Concrete deep beams
(OP)
Hello,
I am designing the lintels of a load bearing wall as deep beams as the ratio of span over lintel height is waaay below 4. My question is related to shear. I am using strut and tie models to obtain by flexural reinforcement but all I have found on books about shear is a 10*sqrt(f'c) limitation and some vertical and horizontal minimum steel, but I just want to confirm that I still need to design stirrups like a normal beam, is this correct? (taking into account the provided vertical steel).
Thanks
I am designing the lintels of a load bearing wall as deep beams as the ratio of span over lintel height is waaay below 4. My question is related to shear. I am using strut and tie models to obtain by flexural reinforcement but all I have found on books about shear is a 10*sqrt(f'c) limitation and some vertical and horizontal minimum steel, but I just want to confirm that I still need to design stirrups like a normal beam, is this correct? (taking into account the provided vertical steel).
Thanks






RE: Concrete deep beams
RE: Concrete deep beams
RE: Concrete deep beams
I have been caught out designing a deep beam to transfer, I designed the shear reinforcement incorrectly. And had cracking which indicated a shear failure. Further stress analysis showed the reinforcement provided was OK for strength, however cracking did occur in the concrete.
RE: Concrete deep beams
I have a few very deep concrete beams (with flanges) on a project now and I'm expecting some diagonal cracking. I'm within the (10 sq rt f'c)bd for the shear strength and the reinforcement is provided per the strut and tie provisions, but the beam is very heavily reinforced and I am fully expecting diagonal cracking.
RE: Concrete deep beams