W
t
C
a1
b1
a2
b2
e1/e2
f1/f2

W

 

=width or diameter of the holes
=centre distance of the holes
=bridge
=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

=0,866 x t

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

1,0 x 4,0

2,2

5,25

34,5

s

s

s 

2,0 x 5,0

3,5

9,0

31,5

s

s

2,0 x 6,0

4,0

8,0

37,5

s

s

s

3,0 x 10,0

6,5

15,0

31,0

s

s

s 

s

4,0 x 12,0

8,0

16,0

37,5

 s

s

s

5,0 x 12,0

9,0

16,0

41,5

s

s

s

s

6,0 x 12,0

10,0

16,0

45,0

 s

s

s

s

8,0 x 16,0

12,0

20,0

53,5

 s

s

s

s