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408 LES PORTIQUES
70 L = H =10 0.70 80 L =10 ; H = 5 b
h1 h2 b h1 h2 H 0.80
α H 0.65 α
Hα α Hα α 0.75
Z =0.25 0.60 70 Z =0.25
0.57 0.70
60 Z =0.375
0.55 0.65
Z =0.375
b Lb 0.50 60 b Lb 0.60
0.57
50 Z =0.75 0.46 Z =0.75
40 0.45 0.55
0.40 50 0.50
0.46
0.36
0.35 0.45
0.40
40 0.36
0.30 0.35
30 0.26 0.30
0.25
30 0.26
0.25
0.20
20 0.20
0.15 20
k=1
0.15
k=1
2 0.10
10 2 0.10
4 10
6 4 0.05
10 8 0.05 86
10
LL
H H
∞
0 k =∞ 0
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Figure 2.19.13. Figure 2.19.14.
