COMBINED TENSION AND SHEAR LOAD
Tri-Linear
Results Status ( continued )
Results ACI 318-19 Chapter 17 Provision Comments for PROFIS Engineering Status The following shear failure modes are considered for each type of anchor :
post-installed mechanical anchor steel strength : β V
= V ua ( i ) / ϕ steel
V sa concrete breakout strength : β V = V ua ( i )
/ ϕ concrete
V cb or β V = V ua ( g )
/ ϕ concrete
V cbg concrete pryout strength : β V = V ua ( i )
/ ϕ concrete
V cp or β V = V ua ( g
)/ ϕ concrete
V cpg post-installed adhesive anchor steel strength : β V
= V ua ( i ) / ϕ steel
V sa concrete breakout strength : β V = V ua ( i )
/ ϕ concrete
V cb or β V = V ua ( g )
/ ϕ concrete
V cbg concrete pryout strength : β V = V ua ( i )
/ ϕ concrete
V cp or β V = V ua ( g )
/ ϕ concrete
V cpg cast-in anchor steel strength : β V
= V ua ( i ) / ϕ steel
V sa concrete breakout strength : β V = V ua ( i )
/ ϕ concrete
V cb or β V = V ua ( g )
/ ϕ concrete
V cbg concrete pryout strength : β V = V ua ( i )
/ ϕ concrete
V cp or β V = V ua ( g )
/ ϕ concrete
V cpg where V ua ( i ) corresponds to the highest factored shear load acting on an individual anchor and V ua ( g ) corresponds to the total factored shear load acting on a group of anchors .
When the governing β N -value ( 51 %) and the governing β V
-value ( 130 %) for the example above are used in Eq . ( 17.8.3 ), the calculation results would be shown in PROFIS Engineering as follows :
β N , V
= ( β N + β V
)/ 1.2 = ( 0.51 + 1.3 )/ 1.2 = 1.508
Eq . ( 17.8.3 ) has not been satisfied , so the report shows the “ Status ” as “ not recommended ”.
5 Combined tension and shear loads
β N β V ζ Utilization β N [%] Status
0.510 1.300 1.000 1.508 β NV
= ( β N + β V
) 1.2 < = 1 not recommended
Part 5 of the PROFIS Engineering report shows the “ Status ” for Eq . ( 17.8.3 ) calculation results as either “ OK ” if Eq . ( 17.8.3 ) is satisfied , or “ not recommended ” if Eq . ( 17.8.3 ) is not satisfied . PROFIS Engineering considers Eq . ( 17.8.3 ) to be satisfied if ( β N
+ β V
)/ 1.2 is ≤ 1.0 . Reference the PROFIS Engineering design guide section on Utilization β N , V
[%] for additional information about PROFIS Engineering interaction calculations .
357 NORTH AMERICAN PROFIS ENGINEERING ANCHORING TO CONCRETE DESIGN GUIDE — ACI 318-19 Provisions