PROFIS ENGINEERING
V ua, res, row 3 =( 1.0)( V ua, res) PROFIS Engineering assumption MAX {( V ua, res, row n / ϕV cbg, y, row n)} controls the design with respect to concrete breakout at the y- edge. Figure 6.2.3e.
Reference
Figure 6.2.3e [ 58 ]. Shear Load Evaluation – Concrete Breakout at x- Edge( page 54) explained how PROFIS Engineering calculates shear eccentricity( e c, V) with respect to concrete breakout towards the x- edge using V ua, res in lieu of V ua, x. e c, V is used to calculate the modification for shear eccentricity( ψ ec, V), which is used to calculate design concrete breakout strength at the x- edge( ϕV cbg, x).
Reference Shear Load Acting at a Corner( page 18). For this example, when considering concrete breakout with respect to the x- fixed edge, ACI 318 Case 1 / Case 2 provisions are relevant for the anchorage geometry shown in Figure 6.2.3e [ 58 ]. ϕV cbg, x is calculated for col 1 and col 2. The modification factor ψ ec, V is included in the concrete breakout calculation as shown below.
ψ ec, V =
1 1 + e c, V
1.5c a1
where e c, V is calculated using V ua, res per Shear Load Evaluation – Concrete Breakout at x- Edge( page 54)
ϕV cbg, x = ϕ A Vc
A Vco ψ ec, V ψ ed, V ψ c, V ψ h, V V b where: ϕV cbg, x, col 1 is calculated using c a1, col 1 = 8 in( reference Figure 6.2.3e [ 58 ]) ϕV cbg, x, col 2 is calculated using c a1, col 2 = 18 in( reference Figure 6.2.3e [ 58 ])
Per Case 1 / Case 2, shear load is assumed to be distributed proportionately among each column. PROFIS Engineering conservatively uses V ua, res in lieu of V ua, x such that:
V ua, res, col 1 =( 0.5)( V ua, res) PROFIS Engineering assumption V ua, res, col 2 =( 1.0)( V ua, res) PROFIS Engineering assumption MAX {( V ua, res, col n / ϕV cbg, x, col n)} controls the design with respect to concrete breakout at the x- edge.
October 2025 58