Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 346

Table 20 — Load adjustment factors for Hilti KH-EZ , KH-EZ P , KH-EZ PM , KH-EZ PL , KH-EZ C and KH-EZ CRC in the top of uncracked concrete over metal deck 1 , 2
1 / 4-in . and 3 / 8-in . KH-EZ uncracked concrete over metal deck
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
Spacing factor in shear 3
ƒ AV
Edge distance in shear
⊥ toward edge
ƒ RV
II to and away from edge
ƒ RV
Conc . thickness factor in shear 4
ƒ HV
Anchor
in .
1 / 4
3 / 8
1 / 4
3 / 8
1 / 4
3 / 8
1 / 4
3 / 8
1 / 4
3 / 8
1 / 4
3 / 8
diameter d a
( mm )
( 6.4 )
( 9.5 )
( 6.4 )
( 9.5 )
( 6.4 )
( 9.5 )
( 6.4 )
( 9.5 )
( 6.4 )
( 9.5 )
( 6.4 )
( 9.5 )
Nominal
in .
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
embed . h nom
( mm )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
Spacing ( s )/ edge distance ( c a
)/ concrete thickness ( h ) - in . ( mm )
1-3 / 4
( 44 )
n / a
n / a
0.44
0.58
n / a
n / a
0.44
0.58
0.44
0.58
n / a
n / a
2
( 51 )
n / a
n / a
0.50
0.67
n / a
n / a
0.50
0.67
0.50
0.67
n / a
n / a
2-1 / 2
( 64 )
n / a
n / a
0.63
0.83
n / a
n / a
0.63
0.83
0.63
0.83
0.78
0.83
3
( 76 )
0.92
0.95
0.75
1.00
0.68
0.71
0.75
1.00
0.75
1.00
0.85
0.91
3-1 / 4
( 83 )
0.96
0.99
0.81
0.70
0.72
0.81
0.81
3-1 / 2
( 89 )
0.99
1.00
0.88
0.71
0.74
0.88
0.88
4
( 102 )
1.00
1.00
0.74
0.78
1.00
1.00
4-1 / 2
( 114 )
0.77
0.81
5
( 127 )
0.80
0.84
5-1 / 2
( 140 )
0.83
0.88
6
( 152 )
0.86
0.91
6-1 / 2
( 165 )
0.89
0.95
7
( 178 )
0.92
0.98
7-1 / 2
( 191 )
0.95
1.00
8
( 203 )
0.98
9
( 229 )
1.00
Table 21 — Load adjustment factors for Hilti KH-EZ , KH-EZ P , KH-EZ PM , KH-EZ PL , KH-EZ C and KH-EZ CRC in the top of cracked concrete over metal deck 1 , 2
1 / 4-in . and 3 / 8-in . KH-EZ cracked concrete over metal deck
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
Spacing factor in shear 3
ƒ AV
Edge distance in shear
⊥ toward edge
ƒ RV
II to and away from edge
ƒ RV
Conc . thickness factor in shear 4
ƒ HV
Anchor
in .
1 / 4
3 / 8
1 / 4
3 / 8
1 / 4
3 / 8
1 / 4
3 / 8
1 / 4
3 / 8
1 / 4
3 / 8
diameter d a
( mm )
( 6.4 )
( 9.5 )
( 6.4 )
( 9.5 )
( 6.4 )
( 9.5 )
( 6.4 )
( 9.5 )
( 6.4 )
( 9.5 )
( 6.4 )
( 9.5 )
Nominal
in .
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
1-5 / 8
embed . h nom
( mm )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
( 41 )
Spacing ( s )/ edge distance ( c a
)/ concrete thickness ( h ) - in . ( mm )
1-3 / 4
( 44 )
n / a
n / a
0.99
1.00
n / a
n / a
0.51
0.62
0.99
1.00
n / a
n / a
2
( 51 )
n / a
n / a
1.00
n / a
n / a
0.62
0.76
1.00
n / a
n / a
2-1 / 2
( 64 )
n / a
n / a
n / a
n / a
0.87
1.00
0.78
0.83
3
( 76 )
0.92
0.95
0.68
0.71
1.00
0.85
0.91
3-1 / 4
( 83 )
0.96
0.99
0.70
0.73
3-1 / 2
( 89 )
0.99
1.00
0.71
0.74
4
( 102 )
1.00
0.74
0.78
4-1 / 2
( 114 )
0.77
0.81
5
( 127 )
0.80
0.85
5-1 / 2
( 140 )
0.83
0.88
6
( 152 )
0.86
0.92
6-1 / 2
( 165 )
0.89
0.95
7
( 178 )
0.92
0.98
7-1 / 2
( 191 )
0.95
1.00
8
( 203 )
0.98
9
( 229 )
1.00
1 Linear interpolation not permitted .
2 When combining multiple load adjustment factors ( e . g . for a 4 anchor pattern in a corner with thin concrete member ) the design can become very conservative . To optimize the design , use Hilti PROFIS Engineering software or perform anchor calculation using design equations from ACI 318 Chapter 17 .
3 Spacing factor reduction in shear , ƒ AV , assumes an influence of a nearby edge . If no edge exists , then ƒ AV
= ƒ AN .
4 Concrete thickness reduction factor in shear , ƒ HV , assumes an influence of a nearby edge . If no edge exists , then ƒ HV
= 1.0 . - For concrete thickness greater than or equal to 3-1 / 4-inches , the anchor can be designed using either table 2 or table 3 of this section .
342 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.6 KWIK HUS-EZ SCREW ANCHOR Hilti , Inc . 1-800-879-8000 | en español 1-800-879-5000 | www . hilti . com | Hilti ( Canada ) Corporation | www . hilti . ca | 1-800-363-4458