PROFIS ENGINEERING
Reference Figure 6.2.1e [ 53 ]. PROFIS Engineering conservatively assumes V ua, res acts towards the y- edge in lieu of V ua, y. Therefore, PROFIS Engineering calculations for“ x” are predicated on using V ua, res in lieu of V ua, y such that the value for“ x” is calculated as follows:
3anchors 806lb / anchor −5in * + 3anchors 194lb / anchor + 5in * = V ua, res lb xin − 12, 090in − lb + 2910in − lb = 6708lb xin x = − 1.37in
* reference Figure 6.2 [ 51 ] for anchor geometry
“ x” corresponds to the shear load eccentricity parameter, which is designated e c, V in ACI 318. e c, V is used to calculate the modification 1 factor for shear eccentricity( ψ ec, V): ψ ec, V = 1 + e c, V
1.5c a1
ψ ec, V is used to calculateϕV cbg, y: ϕV cbg, y = ϕ A Vc
A Vco ψ ec, V ψ ed, V ψ c, V ψ h, V V b PROFIS Engineering checks ϕV cbg, y ≥ V ua, res
For the application illustrated in Figure 6.2 [ 51 ], Shear Load Evaluation – Concrete Breakout at x- Edge( page 54) explains PROFIS Engineering calculations for shear eccentricity when calculating concrete breakout in shear for the x- edge( ϕV cbg, x).
Shear Load Evaluation – Concrete Breakout at x- Edge
Figure 6.2.2a. Figure 6.2.2b.
V ua, x = factored shear load acting in the x direction towards the-x edge = 6000 lb
V ua, x, n = factored shear load in-x direction acting on anchor n V ua, x, n =( V ua, x / 6 anchors) = 1000 lb / anchor
V ua, y = factored shear load acting in the y direction towards the-y edge = 3000 lb
M tor = factored torsion moment =( V ua, y)( 6 in) = 18,000 in-lb F tor, n = factored load( from torsion) acting on anchor n
F tor, n, x = factored load( from torsion) acting on anchor n in the x direction
F tor, n, y = factored load( from torsion) acting on anchor n in the y direction
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