Table 23 — Hilti KWIK Bolt 3 hot-dip galvanized carbon steel design information in accordance with CSA A23.3 Annex D 1
Design parameter Symbol Units 1 / 2 5 / 8 3 / 4 A23.3-14
Anchor O . D . d a in . 0.5 0.625 0.75 ( mm ) ( 12.7 ) ( 15.9 ) ( 19.1 )
Effective minimum embedment 2 h ef in . 2 3-1 / 4 3-1 / 8 4 3-3 / 4 4-3 / 4 ( mm ) ( 51 ) ( 83 ) ( 79 ) ( 102 ) ( 95 ) ( 121 )
Minimum concrete thickness h min in . 4 6 6 8 5 6 8 6 8 8 ( mm ) ( 102 ) ( 152 ) ( 152 ) ( 203 ) ( 127 ) ( 152 ) ( 203 ) ( 152 ) ( 203 ) ( 203 )
Critical edge distance c ac in . 4-7 / 8 3-5 / 8 7-1 / 2 5.75 8 9-1 / 2 8 9-3 / 4 7-1 / 2 9-1 / 2 ( mm ) ( 124 ) ( 92 ) ( 191 ) ( 146 ) ( 194 ) ( 241 ) ( 197 ) ( 248 ) ( 191 ) ( 241 )
Minimum edge distance
Minimum anchor spacing c min in . 2-7 / 8 2-1 / 8 3-1 / 4 2-3 / 8 4-1 / 4 4 ( mm ) ( 73 ) ( 54 ) ( 83 ) ( 60 ) ( 108 ) ( 102 ) for s > in . 5-3 / 4 5-1 / 4 5-1 / 2 5-1 / 2 10 8-1 / 2 ( mm ) ( 146 ) ( 133 ) ( 140 ) ( 140 ) ( 254 ) ( 216 )
s min
|
( mm ) |
( 73 ) |
( 51 ) |
( 70 ) |
( 60 ) |
( 127 ) |
( 102 ) |
|
in . |
2-7 / 8 |
2 |
2-3 / 4 |
2-3 / 8 |
5 |
4 |
for c > in . 4-1 / 2 3-1 / 4 4-1 / 8 4-1 / 4 9-1 / 2 7 ( mm ) ( 114 ) ( 83 ) ( 105 ) ( 108 ) ( 241 ) ( 178 )
Minimum hole depth in concrete h o in . 2-5 / 8 4 3-3 / 4 4-3 / 4 4-1 / 2 5-3 / 4 ( mm ) ( 67 ) ( 102 ) ( 98 ) ( 121 ) ( 117 ) ( 146 )
Minimum specified yield strength f ya psi 92,000 92,000 76,125 ( N / mm 2 ) ( 634 ) ( 634 ) ( 525 )
Minimum specified ultimate strength f uta psi 115,000 115,000 101,500 ( N / mm 2 ) ( 793 ) ( 793 ) ( 700 )
Effective tensile stress area A se , N in 2 0.101 0.162 0.237 ( mm 2 ) ( 65.0 ) ( 104.6 ) ( 152.8 )
Steel embedment material resistance factor for reinforcement ф s
- 0.85 8.4.3
Resistance modification factor for tension , steel failure modes 4 R - 0.80 D . 5.3
Resistance modification factor for shear , steel failure modes 4 R - 0.75 D . 5.3
lb 7,930 12,255 17,300
Factored steel resistance in tension N sar ( kN ) ( 35.3 ) ( 54.5 ) ( 77.0 ) lb 2,870 3,740 7,415 10,840
Factored steel resistance in shear V sar ( kN ) ( 12.8 ) ( 16.6 ) ( 33.0 ) ( 48.2 )
Coefficient for factored concrete breakout resistance , uncracked concrete
Ref
D . 6.1.2
D . 7.1.2 k c , uncr
- 10 D . 6.2.2
Modification factor for anchor resistance , tension , uncracked concrete 4 ψ c , N
- 1.00 D . 6.2.6
Anchor category - - 1 D . 5.3 ( c ) Concrete material resistance factor ф c
- 0.65 8.4.2
Resistance modification factor for tension and shear , concrete failure modes , Condition B 5 R - 1.00 D . 5.3 ( c )
Factored pullout resistance in 20 MPa lb
4,585 4,540 6,315 7,125
N uncracked concrete 6 pr , uncr
N / A
NA ( kN ) ( 20.4 ) ( 20.2 ) ( 28.1 ) ( 31.7 )
1 Design information in this table is taken from ICC-ES ESR-2302 , dated December 1 , 2020 table 4 , and converted for use with CSA A23.3 Annex D . 2 See figure 1 of this section . 3 The hot-dip galvanized carbon steel KWIK Bolt 3 is considered a ductile steel element as defined by CSA A23.3 Annex D section D . 2 . 4 For all design cases , ψ c , N
= 1.0 . The appropriate coefficient for breakout resistance for uncracked concrete ( k c , uncr
) must be used .
5 For use with the load combinations of CSA A23.3 chapter 8 . Condition B applies where supplementary reinforcement in conformance with CSA A23.3 section D . 5.3 is not provided , or where pullout or pryout strength governs . For cases where the presence of supplementary reinforcement can be verified , the resistance modification factors associated with Condition A may be used .
6 For all design cases , ψ c , P = 1.0 . NA ( not applicable ) denotes that this value does not control for design . See section 4.1.4 of ESR-2302 for additional information .
D . 6.3.2
3.3.11
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.11 KWIK Bolt 3 ( KB 3 ) CARBON AND STAINLESS STEEL 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
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