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
= 7,0 po h ef = 12,0 po d a = 0,875 po
Béton de poids normal: λ = 1,0 → λ a = 1,0 ACI 318-19 Tableau 17.2.4.1
V b = [( 7)( 7,0 po / 0,875 po) 0, 2( 0,875 po) 0, 5 ]( 1,0)( 4 500 psi) 0, 5( 14,0 po) 1, 5
= 34 875 lb V b = 9λ a f ′ c c a1
1.5 f’ c = 4 500 psi
ACI 318-19 Eq.( 17.7.2.2.1b)
c a1, rangée 2 = 14,0 po
8d a = 7,0 po COMMANDES
V b =( 9)( 1,0)( 4 500 psi) 0, 5( 14,0 po) 1, 5 = 31 626 lb vérification: conception V b = MIN { 34 875 lb; 31 626 lb }
V cbg =
A Vc A Vc0
= 31 626 lb
ψ ec, V ψ ed, V ψ c, V ψ h, V ψ parallel, V V b
V cbg, rangée 2 =( 1 035 po 2 / 882 po 2)( 1,0)( 1,0)( 1,2)( 1,18)( 1,0)( 31 626 lb)
= 52 551 lb
f’ c = 4 500 psi |
c a1, rangée 2 = 14,0 po |
ACI 318-19 17.7.2.2 |
A Vc = 1 035 po 2 |
A Vc0 = 882 po 2 |
ψ ec, V = 1,0 |
ψ ed, V = 1,0 |
ψ c, V = 1,2 |
ψ h, V = 1,18 |
ψ parallèle, V = 1,0 |
V b = 31 626 lb |
[ en ] October 2025 79