2.0 SHEAR
2.5 Steel Failure with Lever Arm
Equations L b = z + ( n )( d 0
) ( continued )
Equations ETAG 001 Annex C Provision Comments for PROFIS Engineering
L b
= z + ( n )( d 0 )
5.2.3.2 Steel failure b ) Shear load with lever arm The characteristic resistance of an anchor , VRk , s , is given by Equation ( 5.5 ).
where α M
= see 4.2.2.4
V Rk , s
= α M M Rk , s [ N ] ( 5.5 ) l
l = lever arm according to Equation ( 4.2 )
M Rk , s
= M 0 ( 1 - N / N ) [ Nm ] ( 5 . 5a )
Rk , s sd Rd , s
PROFIS Engineering calculations for stand-off with clamping
t plate
= plate or fixture thickness z = standoff + 0.5 ( t plate )
L b
= z
Torque-controlled expansion anchors must be torqued via a nut / washer assembly at the concrete surface . If clamping via a nut / washer assembly occurs , there will be no local spalling at the concrete surface when the anchor is subjected to bending ; therefore , n equals 0 . When “ stand-off with clamping ” is selected in PROFIS Engineering , ( n )( d 0
) = 0 and L b
= z . For a non-grouted stand-off , expansion anchors must be modeled in PROFIS Engineering for “ stand-off with clamping ”.
Reference the Variables section of the report for more information on the following PROFIS Engineering parameters z , n and d 0
.
313 NORTH AMERICAN PROFIS ENGINEERING ANCHORING TO CONCRETE DESIGN GUIDE — ACI 318-19 Provisions