PROFIS ENGINEERING
V b = 7 l e d a
0.2 d a λ a f ′ c c a1
1.5
ACI 318-19 Eq.( 17.7.2.2.1a)
l e = MIN h e f | 8d a = 5.0in h ef = 8,0 po d a = 0,625 po
Béton de poids normal: λ = 1,0 → λ a = 1,0 ACI 318-19 Tableau 17.2.4.1
V b = [( 7)( 5,0 po / 0,625 po) 0, 2( 0,625 po) 0, 5 ]( 1,0)( 4 000 psi) 0, 5( 4,0 po) 1, 5
= 4 244 lb V b = 9λ a f ′ c c a1
1.5 f’ c = 4 000 psi
ACI 318-19 Eq.( 17.7.2.2.1b)
c a1, col 1 = 4,0 po
V b =( 9)( 1,0)( 4 000 psi) 0, 5( 4,0 po) 1, 5 = 4 554 lb f’ c = 4 000 psi c a1, col 1 = 4,0 po
8d a = 5,0 po CONTROLS vérification: conception V b = MIN { 4244 lb; 4554 lb } = 4244 lb
V cbg =
A Vc A Vc0 ψ ec, V ψ ed, V ψ c, V ψ h, V ψ parallel, V V b
V cbg, col 1 =( 216 po 2 / 72 po 2)( 1,0)( 1,0)( 1,0)( 1,0)( 2,0)( 4244 lb)
= 25 464 lb
ACI 318-19 17.7.2.2 |
A Vc = 216 po 2 |
A Vc0 = 72 po 2 |
ψ ec, V = 1,0 |
ψ ed, V = 1,0 |
ψ c, V = 1,0 |
ψ h, V = 1,0 |
ψ parallèle, V = 2,0 |
V b = 4 244 lb |
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