PART 3 TENSION LOAD
Side-Face Blowout Failure
Equation ϕN sb
Equation ACI 318-14 Chapter 17 Provision Comments for PROFIS Engineering
ϕN sb
≥ N ua
17.3.1.1 The design of anchors shall be in accordance with Table 17.3.1.1 . In addition , the design of anchors shall satisfy 17.2.3 for earthquake loading and 17.3.1.2 for adhesive anchors subject to sustained tensile loading .
Table 17.3.1.1
ACI 318-14 strength design provisions for tension check a calculated design strength ( ϕN N
) against a factored tension load ( N ua
). The parameter ϕN sb corresponds to the design side-face blowout strength for a single anchor in tension . The parameter N ua corresponds to the factored tension load acting on the anchor . If ϕN sb ≥ N ua for the application being modeled , the provisions of Section 17.3.1.1 are satisfied for side-face blowout failure .
Failure Mode Side-Face Blowout Strength in Tension
Single Anchor ϕ N sb
≥ N ua
Reference the Results section of the PROFIS Engineering report for more information on the following parameters : Nsb : 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
ϕN sb
: Design side-face blowout strength in 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 .
105 NORTH AMERICAN PROFIS ENGINEERING ANCHORING TO CONCRETE DESIGN GUIDE — ACI 318-14 Provisions