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Punching In the example calculation, a punching calculation will be made for a column with whose dimensions of 100x50 in the sample calculation for V10.19are 100x50. Other parameters in the account are listed as follows.flooring

  • Slab thickness : 27 cm

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  • Slab cover: 3 cm

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  • Material : C35/S420

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  • fctd = 1380.42 kN/m2 (Concrete design tensile strength)

The slab utility useful height, d , calculationis calculated;

d = (slab Slab thickness - slab spacers Slab cover ) = 27 - 3 = 24cm24 cm

Column dimensions

c1 = 100 cm c2 = 50 cm

The punch punching circumference (up) is calculated at a distance d/2 from the column surface and is shown in the image picture below. In this case, we can add distance d to the column dimensions the following operations are performed to find the edges of the punch perimeter (b1, b2) of the punching.

Mathinline
body$$ \normalsize b_1=c_1
+ d = 100
+d=100+24=124
cmb
\; cm$$

Mathinline
body$$ \normalsize b_2=c_2
+ d = 100
+d=50+24=74
cm
\; cm$$

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In this case, the punching circumference (u p ), and the punching area (A z ) obtained by multiplying the punch perimeter by the slab useful height, d, is calculated as shown below.

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