W
t1/t2
C1
C2
L
a1
b1
a2
b2
e1/e2
f1/f2

 

=width or diameter of the holes
=centre distance of the holes
=bridge inside
=bridge outside
=length of the hole
=width of the panel
=length of the panel
=width of the perforated zone
=length of the perforated zone
=non perforated zone in longitudinal direction
=non perforated zone in transverse direction

DIN/EN/ISO 24043

width x length of the hole

centre distance

free area

material thickness

W x L

t1

t2

Ao%

0,5

0,75

1,0

1,5

2,0

2,5

3,0

4,0

5,0

6,0

2,0 x 6,0

2,5

8,0

37,5

s

s

s

4,0 x 12,0

8,0

16,0

37,5

s

s

s

5,0 x 10,0

8,0

13,0

48,0

s

s

s

8,0 x 16,0

10,0

18,0

71,0

s

s

s

10,0 x 20,0

15,0

25,0

53,0

s

s