COMBINED TENSION AND SHEAR LOAD
Tri-Linear
Calculations Utilization β N , V
[%] ( continued )
Calculations 318-14 Chapter 17 Provision Comments for PROFIS Engineering Utilization β N , V
[%]
The “ governing ” failure mode can be defined as the highest utilization for the failure modes being considered . PROFIS Engineering designates the sum of the utilization for the governing failure mode in tension and the utilization for the governing failure mode in shear as “ β N , V
”, and shows it as a percentage in Part 5 of the report .
For the examples above , concrete breakout failure is the governing tension failure mode ( β N
= 51 %) and concrete edge failure in direction x + is the governing shear failure mode ( β V
= 60 %). PROFIS Engineering would calculate β N , V per Eq . ( 17.6.3 ) as follows :
Example : β N , V
= ( β N + β V
)/ 1.2 = ( 0.51 + 0.6 )/ 1.2 = 0.925
5 Combined tension and shear loads
β N β V
E
Utilization β N [%]
Status 0.510 0.600 1.000 0.925 OK β NV
= ( β N + β V
) 1.2 < = 1
Reference the PROFIS Engineering design guide section on the parabolic interaction equation for additional information about PROFIS Engineering interaction calculations .
365 NORTH AMERICAN PROFIS ENGINEERING ANCHORING TO CONCRETE DESIGN GUIDE — ACI 318-14 Provisions