1.0 TENSION
1.4 Side Face Blowout Failure Mode
Results ϕN sb
Results ACI 318-19 Chapter 17 Provision Comments for PROFIS Engineering
ϕN sb
17.5 . 2 For each applicable factored load combination , design strength of anchors shall satisfy the criteria in Table 17.5.2 .
Table 17.5.2 Failure Mode Side-Face Blowout Strength in Tension
Single Anchor
ϕN sb
≥ N ua PROFIS Engineering calculations for design side-face blowout failure in tension :
single anchor — static load conditions design side-face blowout strength = ϕ concrete
N sb
. single anchor — seismic load conditions design side-face blowout strength = ϕ seismic ϕ concrete
N sb
.
ACI 318-19 strength design provisions for side-face blowout failure in tension require calculation of a nominal side-face blowout strength ( N sb or N sbg
). The nominal strength is multiplied by one or more strength reduction factors ( ϕ-factors ) to obtain a design side-face blowout strength ( ϕN sb or ϕN sbg
). ϕ-factors are relevant to static and seismic load conditions .
Reference the Results section of the PROFIS Engineering report for more information on the following parameters :
N sb
: nominal side-face blowout strength in tension
ϕ concrete
: strength reduction factor for side-face blowout failure
ϕ seismic
: strength reduction factor for seismic tension
N ua
: factored load acting on anchors in tension
A summary of calculated tension design strength versus the factored tension load for each tension failure mode relevant to the application is given in Part 3 Tension Load of the PROFIS Engineering report .
Results ϕN sbg
Results ACI 318-19 Chapter 17 Provision Comments for PROFIS Engineering
ϕN sbg
17.5 . 2 For each applicable factored load combination , design strength of anchors shall satisfy the criteria in Table 17.5.2 .
Table 17.5.2 Failure Mode Side-Face Blowout Strength in Tension
Anchor Group
ϕN sbg
≥ N ua
PROFIS Engineering calculations for design side-face blowout failure in tension :
anchor group — static load conditions design side-face blowout strength = ϕ concrete
N sbg
. anchor group — seismic load conditions design side-face blowout strength = ϕ seismic ϕ concrete
N sbg
.
ACI 318-19 strength design provisions for side-face blowout failure in tension require calculation of a nominal side-face blowout strength ( N sb or N sbg
). The nominal strength is multiplied by one or more strength reduction factors ( ϕ-factors ) to obtain a design side-face blowout strength ( ϕN sb or ϕN sbg
). ϕ-factors are relevant to static and seismic load conditions .
Reference the Results section of the PROFIS Engineering report for more information on the following parameters :
N sbg
: nominal side-face blowout strength in tension
ϕ concrete
: strength reduction factor for side-face blowout failure
ϕ seismic
: strength reduction factor for seismic tension
N ua , edge
: factored load acting on anchors in tension nearest the fixed edge being considered for side-face blowout .
A summary of calculated tension design strength versus the factored tension load for each tension failure mode relevant to the application is given in Part 3 Tension Load of the PROFIS Engineering report .
133 NORTH AMERICAN PROFIS ENGINEERING ANCHORING TO CONCRETE DESIGN GUIDE — ACI 318-19 Provisions