PART 4 SHEAR LOAD
Stand-off Failure Mode
Results ϕ steel
( continued )
Results 318-14 Chapter 17 Provision Comments for PROFIS Engineering
ϕ steel
Cast-in-place anchor portfolio parameters for elongation and reduction of area .
Bolt Type
Grade or Type diameter ( in ) f ya ( psi ) futa ( psi ) elongation ( min ) reduction of area ( min )
ASW D1.1 B 1 / 2 – 1 51,000 65,000 20 % 50 %
ASTM F1554
36 ≤2 36,000 58,000 23 % 40 % 55 ≤2 55,000 75,000 21 % 30 % 105 ≤2 105,000 125,000 15 % 45 %
Excerpt of mechanical anchor ICC-ESR showing ( ϕ-factors ) for steel failure in shear . ICC-ESR-1917 Table 3
DESIGN INFORMATION
Effective min . embedment
Symbol
Strength reduction ϕ factor for tension , steel failure modes
Units
Nominal anchor diameter ( in .) 3 / 8 1 / 2 5 / 8 3 / 4 h ef in . 1-1 / 2 2 2-3 / 4 2 3-1 / 4 3-1 / 8 4 3-1 / 4 3-3 / 4 4-3 / 4
0.75
Excerpt of adhesive anchor ICC-ESR showing ( ϕ-factors ) for steel failure in shear
ICC-ESR-3187 Table 11
DESIGN INFORMATION Symbol Units
Nominal rod diameter ( in ). 3 / 8 1 / 2 5 / 8 3 / 4 7 / 8 1 1-1 / 4
ASTM F1554 Gr . 36
Nominal strength as governed by steel strength
Reduction factor , seismic shear
Strength reduction factor ϕ for shear
V sa lb - 4940 7865 11,640 16,070 21,080 33,725 α V , seis
- 0.60
ϕ - 0.65
343 NORTH AMERICAN PROFIS ENGINEERING ANCHORING TO CONCRETE DESIGN GUIDE — ACI 318-14 Provisions