Concrete Nib Design

Check minimum area of reinforcement b.d

< 0.0015 x 1000 x 81 = 122 mm2 Check minimum area of reinforcement for crack control

= 0.4 for bending

'ct.eff

Therefore A

No further check for crack control Is necessary as h = 105 < 200 mm. Maximum bar spacing = 3h = 315 < 500 mm

The reinforcement details are shown in Figure 8.5.

Nib Reinforcement
Figure 8.5 Nib reinforcement details

Check shear in nib, taking into account the proximity of the concentrated load 4.3.2.3 to the support.

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