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 = 6.0 in h ef = 10,0 po d a = 0,75 po
Béton de poids normal: λ = 1,0 → λ a = 1,0 ACI 318-19 Tableau 17.2.4.1
V b = [( 7)( 6,0 po / 0,75 po) 0, 2( 0,75 po) 0, 5 ]( 1,0)( 5 000 psi) 0, 5( 18,0 po) 1, 5
= 49 618 lb V b = 9λ a f ′ c c a1
1.5 f’ c = 5 000 psi
ACI 318-19 Eq.( 17.7.2.2.1b)
c a1, rangée 3 = 18,0 po
V b =( 9)( 1,0)( 5 000 psi) 0, 5( 18,0 po) 1, 5 = 48 600 lb f’ c = 5 000 psi c a1, rangée 3 = 18,0 po
8d a = 6,0 po CONTROLS vérification: conception V b = MIN { 49 618 lb; 48 600 lb } = 48 600 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, rangée 3 =( 792 po 2 / 1458 po 2)( 0,987)( 0,833)( 1,2)( 1,5)( 1,0)( 48,600 lb)
= 39 070 lb
ACI 318-19 17.7.2.2 |
A Vc = 792 po 2 |
A Vc0 = 1458 po 2 |
ψ ec, V = 0,987 |
ψ ed, V = 0,833 |
ψ c, V = 1,2 |
ψ h, V = 1,5 |
ψ parallèle, V = 1,0 |
V b = 48 600 lb |
[ en ] October 2025 124