No links required in orthogonal direction Punching

Length of one side of critical perimeter at 1.5d from face of column 4.3.4,1P(4) &

This extends almost the full width of the base = 3000 mm

Hence it is sufficient just to check line shear as above and shear around perimeter of column face, where

VJud < 0.90 JTk = 0.90 x ยก30 = 4.9 N/mm2 NAD 6.4(d)

The shear stress at the column face perimeter with d = 675 mm is less than 4.9 N/mm2 in both cases (see Table 7.1) OK

Table 7.1 Punching shear at column face





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