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LES PORTIQUES 449
20 L = H =10 20 L =10 ; H = 5
W h1 h3 W h1 h3
18 H α = 50,77° L α 18 H α = 50,77° L α
16 b b 16 b b
14 14
12 12
k=1 10 k=1
10 2 2
86 4
864 10
10
∞
8∞
7.5 8
7.5
Z =0.75 Z =0.75
6 k=1 6 k=1
2
4
3.75 2 64
10 8
2.5 8 6 4
2 10
∞ ∞
∞ 10 8 6 4 2 k=1 Z =0.375 4 ∞ 10 8 6 4 2 k=1 Z =0.375
Z =0.25 3.75 Z =0.25
2.5
2
LL
HH
00
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
20 Figure 2.25.3. 20 Figure 2.25.4.
W W
L = H =10 L =10 ; H = 5
18 h1 h3 18 h1 h3
H α = 33,21° α H α = 33,21° α
16 b L b 16 b L b
14 14
12 12
k=1 k=1
10 2 10 2
8 86 4 8 4
7.5 10 6
6
∞ 10
4
3.75 ∞
Z =0.75 8 Z =0.75
7.5 Z =0.375
k=1 k=1
6
2 2
64 64
10 8 10 8
∞ ∞
∞ 10 8 6 4 2 k=1 Z =0.375 4 ∞ 10 8 6 4 2 k=1
3.75
2.5 2.5
Z =0.25 Z =0.25
22
LL
HH
00
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Figure 2.25.5. Figure 2.25.6.
