Traverse Spacing of Shear Reinf. in Wide Beams
Traverse Spacing of Shear Reinf. in Wide Beams
(OP)
In ACI 318 I cannot find any direct provision for the traverse spacing of shear stirrups in wide reinforced concrete beams (1m +). The code only seems to refer to the standard longitudinal spacing of stirrups using 2 legs. Can anyone give me some guidelines on this topic?
Regards
Mike
Regards
Mike






RE: Traverse Spacing of Shear Reinf. in Wide Beams
Maximum distances of
0.8d and no more than 300 mm
0.6d and no more than 300 mm0
0.3d and no more than 200 mm
are established for design shears exceeding less than 1/5, bigger than 1/5 and less than 2/3 and more than 2/3 of the crushing concrete strut capacity in the modeled strut as per the code (for which there is an evaluation therein).
(d is effective depth to center tensile reinforcement)
A sheet for design according to the present code you can download from the Mathcad Collaboratory site under the civil engineering folder.
RE: Traverse Spacing of Shear Reinf. in Wide Beams
RE: Traverse Spacing of Shear Reinf. in Wide Beams
On further investigation, it is also possible that the criteria for ties in columns as set out in ACI 318 ref: 7.10.5.3 could be adopted for traverse shear legs in wide beams.
This approach is similar to the requirements set out for wide beams in BS:8110 where it states that the maximum spacing of shear link vertical legs, at right angles to the span, should not exceed 'd' and all tension bars should be within 150mm of a vertical leg.
Regards
Mike
RE: Traverse Spacing of Shear Reinf. in Wide Beams
RE: Traverse Spacing of Shear Reinf. in Wide Beams
shear reinforcement.