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LES PORTIQUES 439
70 Z = 0.25 ; L = H =10 b 2.70 70 Z = 0.25 ; L =10 ; H = 5 b 2.70
h1 h2 H 2.60 h1 h2 H 2.60
α α 2.50
10 10 2.40
68 68 86 2.30
66 8 2.50 66 4 2.20
64 64
6 2 2.10
4
k=1
2.40
2
2
2.30
2.20
k=1
2.10
2
1.90 1.90
62 62
1.80 1.80
60 60
1.70 1.70
Hα α Hα α
58 1.60 58 1.60
b Lb b Lb
L 1.50
L 1.50
56 56
Hα α Hα α
1.40 1.40
54 54
bb bb
1.30 1.30
52 52
LL
HH
1.20 1.20
50 50
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
20 Figure 2.24.9. 20 Figure 2.24.10.
W W
L = H =10 L =10; H = 5
18 h1 h2 18 h1 h2
Hα α Hα α
16 16
bL b
bL b
14 14
12 12
10 k=1 10
2 k=1
8 64 8 2
10
864
8∞ 10
∞
Z =0.75 Z =0.75
6 k=1 6 k=1
2 ∞ 8 2
∞ 8 64 10
6 4
10
4 ∞ 10 8 6 4 2 k=1 4 ∞ 10 8 6 4 k=1
Z =0.375 2 Z =0.375
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 2.24.11. Figure 2.24.12.
