Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 312

Table 16 — Load adjustment factors for Carbon Steel 1-in . diameter KB-TZ2 in uncracked concrete 1 , 2
1-in . KB-TZ2 uncracked concrete
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
‖ To edge
ƒ RV
Concrete thickness factor
4 in shear
Effective Embedment
in .
4
5-3 / 4
4
5-3 / 4
4
5-3 / 4
4
5-3 / 4
4
5-3 / 4
4
5-3 / 4
h ef
( mm )
( 102 )
( 146 )
( 102 )
( 146 )
( 102 )
( 146 )
( 102 )
( 146 )
( 102 )
( 146 )
( 102 )
( 146 )
Nominal Embedment
in .
4-5 / 8
6-3 / 8
4-5 / 8
6-3 / 8
4-5 / 8
6-3 / 8
4-5 / 8
6-3 / 8
4-5 / 8
6-3 / 8
4-5 / 8
6-3 / 8
h nom
( mm )
( 117 )
( 162 )
( 117 )
( 162 )
( 117 )
( 162 )
( 117 )
( 162 )
( 117 )
( 162 )
( 117 )
( 162 )
ƒ HV
Spacing ( s ) / Edge Distance ( c a
) / Concrete Thickness ( h ) - in . ( mm )
3
( 76 )
n / a
n / a
n / a
0.292
n / a
n / a
n / a
0.081
n / a
0.162
n / a
n / a
3-3 / 4
( 95 )
n / a
n / a
n / a
0.321
n / a
n / a
n / a
0.113
n / a
0.227
n / a
n / a
4
( 102 )
n / a
n / a
n / a
0.331
n / a
n / a
n / a
0.125
n / a
0.250
n / a
n / a
4-1 / 4
( 108 )
n / a
n / a
n / a
0.341
n / a
n / a
n / a
0.137
n / a
0.274
n / a
n / a
4-3 / 4
( 121 )
n / a
0.638
n / a
0.362
n / a
0.549
n / a
0.162
n / a
0.324
n / a
n / a
5
( 127 )
n / a
0.645
n / a
0.372
n / a
0.552
n / a
0.175
n / a
0.349
n / a
n / a
6
( 152 )
n / a
0.674
n / a
0.415
n / a
0.563
n / a
0.230
n / a
0.415
n / a
n / a
6-3 / 4
( 171 )
n / a
0.696
n / a
0.449
n / a
0.570
n / a
0.274
n / a
0.449
n / a
n / a
8
( 203 )
0.833
0.732
0.727
0.508
0.621
0.583
0.620
0.354
0.727
0.508
0.696
n / a
10
( 254 )
0.917
0.790
0.909
0.625
0.652
0.604
0.867
0.494
0.909
0.625
0.778
0.645
12
( 305 )
1.000
0.848
1.000
0.750
0.682
0.625
1.000
0.650
1.000
0.750
0.853
0.707
18
( 457 )
1.000
1.000
0.773
0.688
1.000
1.000
1.000
0.866
24
( 610 )
0.864
0.750
1.000
36
( 914 )
1.000
0.875
> 48
( 1219 )
1.000
Table 17 — Load adjustment factors for Carbon Steel 1-in . diameter KB-TZ2 in cracked concrete 1 , 2
1-in . KB-TZ2 cracked concrete
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
‖ To edge
ƒ RV
Concrete thickness factor
4 in shear
Effective Embedment
in .
4
5-3 / 4
4
5-3 / 4
4
5-3 / 4
4
5-3 / 4
4
5-3 / 4
4
5-3 / 4
h ef
( mm )
( 102 )
( 146 )
( 102 )
( 146 )
( 102 )
( 146 )
( 102 )
( 146 )
( 102 )
( 146 )
( 102 )
( 146 )
Nominal Embedment
in .
4-5 / 8
6-3 / 8
4-5 / 8
6-3 / 8
4-5 / 8
6-3 / 8
4-5 / 8
6-3 / 8
4-5 / 8
6-3 / 8
4-5 / 8
6-3 / 8
h nom
( mm )
( 117 )
( 162 )
( 117 )
( 162 )
( 117 )
( 162 )
( 117 )
( 162 )
( 117 )
( 162 )
( 117 )
( 162 )
ƒ HV
Spacing ( s ) / Edge Distance ( c a
) / Concrete Thickness ( h ) - in . ( mm )
3
( 76 )
n / a
n / a
n / a
0.542
n / a
n / a
n / a
0.081
n / a
0.162
n / a
n / a
3-3 / 4
( 95 )
n / a
n / a
n / a
0.596
n / a
n / a
n / a
0.113
n / a
0.226
n / a
n / a
4
( 102 )
n / a
n / a
n / a
0.614
n / a
n / a
n / a
0.124
n / a
0.249
n / a
n / a
4-1 / 4
( 108 )
n / a
n / a
n / a
0.633
n / a
n / a
n / a
0.136
n / a
0.272
n / a
n / a
4-3 / 4
( 121 )
n / a
0.638
n / a
0.671
n / a
0.549
n / a
0.161
n / a
0.322
n / a
n / a
5
( 127 )
n / a
0.645
n / a
0.690
n / a
0.552
n / a
0.174
n / a
0.348
n / a
n / a
6
( 152 )
n / a
0.674
n / a
0.770
n / a
0.562
n / a
0.228
n / a
0.457
n / a
n / a
6-3 / 4
( 171 )
n / a
0.696
n / a
0.833
n / a
0.570
n / a
0.273
n / a
0.545
n / a
n / a
8
( 203 )
0.833
0.732
1.000
0.943
0.619
0.583
0.606
0.352
1.000
0.703
0.691
n / a
10
( 254 )
0.917
0.790
1.000
0.649
0.604
0.847
0.491
0.983
0.773
0.644
12
( 305 )
1.000
0.848
0.679
0.625
1.000
0.646
1.000
0.846
0.706
18
( 457 )
1.000
0.769
0.687
1.000
1.000
0.864
24
( 610 )
0.858
0.749
0.998
36
( 914 )
1.000
0.874
1.000
> 48
( 1219 )
0.998
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 Design software or perform anchor calculation using design equations from ACI 318 Ch . 17 or CSA A23.3 Annex D . 3 Spacing factor reduction in shear , f AV
, is applicable when edge distance c < 3h ef . If c ≥ 3h ef then f AV = f AN
.
4 Concrete thickness reduction factor in shear , f HV , is applicable when edge distance c < 3h ef
. If c ≥ 3h ef then f HV
= 1.0 .
If a reduction factor value is in a shaded cell , this indicates that this specific edge distance may not be permitted with a certain spacing ( or vice versa ). Check with Figure 2 and Table 5 to calculate permissible edge distance , spacing and concrete thickness combinations .
308 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.5 KWIK BOLT TZ2 EXPANSION 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