foundation system of burj al arab

Reinforcement Requirement of Two Way Concrete Slab

In case of flexural reinforcement extending in one direction only, reinforcement for shrinkage and temperature stresses shall be provided perpendicular to flexural reinforcement in structural slabs. But, in case of, two-way slab where reinforcement requirements are determined by flexure in critical section, the minimum reinforcement is set to the limit of those of temperature and shrinkage.

Spacing of reinforcement at critical sections shall not exceed two times the slab thickness, except for portions of slab area that may be of cellular or ribbed construction. In the slab over cellular spaces, reinforcement shall be provided as required by shrinkage and temperature, stated above.


Positive moment reinforcement perpendicular to a discontinuous edge shall extend to the edge of slab and have embedment, straight or hooked, at least 150 mm in spandrel beams, columns or walls.


Negative moment reinforcement perpendicular to a discontinuous edge shall be bent, hooked, or otherwise anchored, in spandrel beams, or wall, and shall be developed at face of support according to provisions for standard development and splices reinforcement.


Corner Reinforcement

1.Special reinforcement shall be provided at exterior corners in both bottom and top of the slab, for a distance in each direction from the corner equal to one-fifth the larger span of the corner panel.

2.Corner reinforcement at the top of the slab shall be parallel to a line bisecting the angle at the relevant corner.

3.The corner reinforcement at the bottom of the slab shall be perpendicular to a line bisecting the angle at the relevant corner.

4.The top and bottom corner reinforcement shall be of size and spacing equivalent to that required for the maximum positive moment in the panel

1 comment:

  1. why corner reinforcement is used?

    ReplyDelete

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