The design recommendations for RC beam-column and base tag on a strength-based advance that the connection shave strength is tartan against the expected force demands imposed by neighboring members. These recommendations, the joint is tacit to behave adequately during earthquakes if its shear strength exceeds the shear demand. The strong column and weak beam method is ensured and enough crossways reinforcement and anchorage extent for reinforcing bars transitory through the connections. The least amount and greatest spacing of joint transverse reinforcement are based on the requirements for critical regions of RC columns that is combined with the longitudinal reinforcement from beams and columns and often lead to severe reinforcement congestion and construction limitations.
Auxiliary needs to satisfy the anchorage length requirements for beam and column longitudinal bars may require either the use of large column and/or beam sections or a large number of small diameter bars, which might in turn increase reinforcement congestion in the connection. It is worth mentioning that satisfying the minimum BS Code provisions does not prevent the formation of wide diagonal cracks in connections during large displacement reversals and thus, these provisions are primarily intended to provide protection against loss of lives and structural collapse 3
3 BSs 648, 5950, 6399 and 8110 focus
The design of structures moves towards performance-based design. There is need for new structural members and systems that possess enhanced deformation capacity and damage tolerance, while requiring simple reinforcement particulars. The development of a highly damage-tolerant beam-column connection would allow structural engineers to design joints for moderate shear distortions while exhibiting little damage reducing rotation demands in beam and eliminating the need for post-earthquake repairs.
Here the only centre line dimensions are taken in to account. Base joints are assumed to be hinged and assumed to be at a depth of below ground level. Half of the structure is considered because of symmetry and on the symmetric axis suitable boundary conditions are applied. Even though the beam behaviour is like a T beam over a certain length of span, moment of inertia is calculated based on the rectangular beam.