PROFIS Design Guide: US-EN Summer 2021 | Page 351

COMBINED TENSION AND SHEAR LOAD

Parabolic
Variables β N
( continued )
Variables 318-14 Chapter 17 Provision Comments for PROFIS Engineering
β N
The following tension failure modes are considered for each type of anchor in the PROFIS Engineering portfolio :
post-installed mechanical anchor
steel strength :
β N
= N ua ( i ) / ϕ steel
N sa
pullout strength :
β N
= N ua ( i )/ ϕ concrete
N pn , f ́c
concrete breakout strength :
β N
= N ua ( i )/ ϕ concrete
N cb or β N = N ua ( g )
/ ϕ concrete
N cbg
post-installed adhesive anchor
steel strength :
β N
= N ua ( i ) / ϕ steel
N sa
bond strength :
β N
= N ua ( i ) / ϕ bond
N a or β N = N ua ( g )
/ ϕ bond
N ag
sustained tension load
( for bond strength ):
β N
= N ua ( i ) / 0.55ϕ bond
N ba
concrete breakout strength :
β N
= N ua ( i ) / ϕ concrete
N cb or β N = N ua ( g )
/ ϕ concrete
N cbg
cast-in anchor steel strength : pullout strength : concrete breakout strength : side-face blowout strength : β N
= N ua ( i ) / ϕ steel
N sa β N
= N ua ( i ) / ϕ concrete
N pn , f ́c β N
= N ua ( i ) / ϕ concrete
N cb or β N = N ua ( g )
/ ϕ concrete
N cbg β N
= N ua ( i ) / ϕ concrete
N sb or β N = N ua ( g )
/ ϕ concrete
N sbg where N ua ( i ) corresponds to the highest factored tension load acting on an individual anchor and
N ua ( g ) corresponds to the total factored tension load acting on a group of anchors .
351 NORTH AMERICAN PROFIS ENGINEERING ANCHORING TO CONCRETE DESIGN GUIDE — ACI 318-14 Provisions