HILTI PROFIS ENGINEERING 3.0.44
Adhesive anchor group
Example PROFIS Engineering Report for an adhesive anchor group
Group calculations are for N cbg , N ag
, V cbg , and V cpg
4.2 Steel failure ( with lever arm )
V s
M
= α M
M s
L b bending equation for stand-off
M s
= M s
0
1-
N ua resultant flexural resistance of anchor ϕN sa
|
0
M s
= ( `1.2 ) ( S ) ( f u , min )
|
characteristic flexural resistance of anchor |
|
[ 1- ( N ua / ϕN sa
)]
|
reduction for tensile force acting simultaneously with a shear force on the anchor |
S = |
π ( d ) 3 32 |
elastic section modulus of anchor bolt at concrete surface |
|
L b
= z + ( n )( d 0 )
|
internal lever arm adjusted for spalling of the surface concrete |
|
M ϕV s
≥ V ua
|
ACI 318-14 Table 17.3.1.1 |
Variables α m f u , min
[ psi ] N ua [ lb ] ϕN sa
[ lb ] z [ in ] n d 0
[ in ] 1.000 58,000 5,000 26,347 2.500 0.500 1.00
Calculations
M s
0
[ in . lb ] [ 1- ( N ua / ϕN sa
)] M s [ in . lb ] L b
[ in ] 4,628 0.810 3,749 3.000
Results
V s
M
[ lb ] ϕ steel ϕV s
M
[ lb ] V ua
[ lb ] 1,250 0.650 812 250
Input data and results must be checked for conformity with the existing conditions and for plausibility ! * PROFIS Engineering ( c ) 2003-2018 Hilti AG , FL-9494 Schaan Hilti is a registered Trademark of Hilti AG , Schaan
375 NORTH AMERICAN PROFIS ENGINEERING ANCHORING TO CONCRETE DESIGN GUIDE — ACI 318-14 Provisions