9.3.9.4.13 Minimum area of shear reinforcement
A minimum area of shear reinforcement shall be provided in all reinforced concrete members as required
by 7.5.10 when the design shear force exceeds one half of the design shear strength provided by
concrete, φVc, except:
(a) In beams with a total depth equal to or less than 250 mm;
(b) In beams cast compositely with slabs, where the overall depth is equal to or less than the smaller of
half the width of the web, or 300 mm;
(c) In slabs, including floor slabs containing precast pretensioned units, where the maximum clear
spacing between the webs is equal to or less than 750 mm; and the overall depth is less than
400 mm;
(d) In monolithic rib and slab construction where the ribs have a width equal to or greater than 100 mm,
the clear spacing between ribs is equal to or less than 750 mm and the total depth of the rib and slab
is equal to or less than 300 mm;
(e) In cases where tests have shown that satisfactory performance can be achieved when allowance has
been made for likely actions including creep, shrinkage, differential temperature, gravity loads,
seismic actions and repetitive loading where appropriate. The tests shall be part of a special study,
which satisfies the requirements of AS/NZS 1170.5 Appendices A and B.