Table 38 — Hilti KB-TZ2 carbon steel shear design information in accordance with CSA A23.3 Annex D , applicable for both hammer and core drilled installations 1
Design parameter Symbol Units
Nominal anchor diameter ( in .) 1 / 4 3 / 8 1 / 2 5 / 8 3 / 4 1 A23.3
Anchor O . D . d a in . 0.25 0.375 0.5 0.625 0.75 1.00 ( mm ) ( 6.4 ) ( 9.5 ) ( 12.7 ) ( 15.9 ) ( 19.1 ) ( 25.4 )
Effective min . embedment 2 h ef in . 1-1 / 2 1-1 / 2 2 2-1 / 2 1-1 / 2 2 2-1 / 2 3-1 / 4 2-3 / 4 3-1 / 4 4 3-1 / 4 3-3 / 4 4-3 / 4 4 5-3 / 4 ( mm ) ( 38 ) ( 38 ) ( 51 ) ( 64 ) ( 38 ) ( 51 ) ( 64 ) ( 83 ) ( 70 ) ( 83 ) ( 102 ) ( 83 ) ( 95 ) ( 121 ) ( 102 ) ( 146 )
Steel embed . material resistance factor for reinforcement
Shear , steel failure modes
Φ s
- 0.85 0.85 0.85 0.85 0.85 0.85 8.4.3
Resistance modification |
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|
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|
|
|
|
|
factor for shear , steel failure |
R |
- |
0.75 |
0.75 |
0.75 |
0.75 |
0.75 |
0.75 |
D . 5.3 |
modes 3
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|
Factored steel resistance in shear
Factored steel resistance in shear , seismic
Concrete material resistance factor
V sar lb 855 2,055 3,530 6,540 8,800 11,980 14,550 D . 7 . 1 . 2
( kN ) ( 3.8 ) ( 9.1 ) ( 15.7 ) ( 29.1 ) ( 39.1 ) ( 53.3 ) ( 64.7 )
V sar , eq lb 855 2,055 3,530 6,540 8,800 8,800 ( kN ) ( 3.8 ) ( 9.1 ) ( 15.7 ) ( 29.1 ) ( 39.1 ) ( 39.1 )
Shear , concrete failure modes
Φ c
- 0.65 0.65 0.65 0.65 0.65 0.65 8.4.2
Resistance modification |
|
|
|
|
|
|
|
|
|
factor for shear , concrete |
R |
- |
1.00 |
1.00 |
1.00 |
1.00 |
1.00 |
1.00 |
D . 5.3 |
failure modes 4
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|
Load bearing length of anchor in shear
Effectiveness factor for pryout l e in . 1-1 / 2 1-1 / 2 2 2-1 / 2 1-1 / 2 2 2-1 / 2 3-1 / 4 2-3 / 4 3-1 / 4 4 3-1 / 4 3-3 / 4 4-3 / 4 4 5-3 / 4 ( mm ) ( 38 ) ( 38 ) ( 51 ) ( 64 ) ( 38 ) ( 51 ) ( 64 ) ( 83 ) ( 70 ) ( 83 ) ( 102 ) ( 83 ) ( 95 ) ( 121 ) ( 102 ) ( 146 ) k cp
- 1.0 1.0 1.0 2.0 1.0 1.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0
1 Design information in this table is taken from ICC-ES ESR-4266 , dated December , 2020 , and revised July , 2021 Tables 4 and 6 , and converted for use with CSA A23.3 Annex D . 2 See Figure 1 of this document . 3 The KB-TZ2 carbon steel anchor is considered a ductile steel element as defined by CSA A23.3 Annex D section D . 2 . 4 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 .
Ref
Table 39 — Steel resistance for Hilti KB-TZ2 carbon steel anchors 1 , 2
Nominal anchor diameter in .
1 / 4
3 / 8
3 / 8
1 / 2
1 / 2
5 / 8
3 / 4
1
1
Effective embedment depth in . ( mm )
Tensile 3
ФN sar lb ( kN )
Shear 4
ФV sar lb ( kN )
Seismic Shear 5
ФV sar , eq lb ( kN )
1-1 / 2 1,985 855 855 ( 38 ) ( 8.8 ) ( 3.8 ) ( 3.8 ) 1-1 / 2 4,420 2,055 2,055 ( 38 ) ( 19.7 ) ( 9.1 ) ( 9.1 ) 2 2-1 / 2 4,420 2,160 2,160 ( 51 ) ( 64 ) ( 19.7 ) ( 9.6 ) ( 9.6 ) 1-1 / 2 2 7,645 3,530 3,530 ( 38 ) ( 51 ) ( 34.0 ) ( 15.7 ) ( 15.7 ) 2-1 / 2 3-1 / 4 7,645 4,385 4,385 ( 64 ) ( 83 ) ( 34.0 ) ( 19.5 ) ( 19.5 ) 2-3 / 4 3-1 / 4 4 11,925 6,540 6,540 ( 70 ) ( 83 ) ( 102 ) ( 53.0 ) ( 29.1 ) ( 29.1 ) 3-1 / 4 3-3 / 4 4-3 / 4 17,230 8,800 8,800 ( 83 ) ( 95 ) ( 121 ) ( 76.6 ) ( 39.1 ) ( 39.1 )
4 28,145 11,980 8,800 ( 102 ) ( 125.2 ) ( 53.3 ) ( 39.1 ) 5-3 / 4 28,145 14,550 8,800 ( 146 ) ( 125.2 ) ( 64.7 ) ( 39.1 )
1 See Section 3.1.8 to convert factored resistance value to ASD value . 2 Hilti KB-TZ2 carbon steel anchors are to be considered ductile steel elements . 3 Tensile N sar
= A se , N ф s f uta
R as noted in CSA A23.3 Annex D . 4 Shear determined by static shear tests with V sar
< 0.6 A se , V ф s f ut a R as noted in CSA A23.3 Annex D . 5 Seismic shear values determined by seismic shear tests with V sar , eq
≤ 0.60 A se , V ф s f uta
R as noted in CSA A23.3 Annex D .
See Section 3.1.8 for additional information on seismic applications .
320 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