Anchor Fastening Technical Guide , Edition 22
DESIGN INFORMATION IN CONCRETE PER CSA A23.3
Limit State Design of anchors is described in the provisions of CSA A23.3 Annex D for post-installed anchors tested and assessed in accordance with ACI 355.2 for mechanical anchors and ACI 355.4 for adhesive anchors . This section contains the Limit State Design tables with unfactored characteristic loads that are based on the published loads in ICC Evaluation Services ESR-3027 . These tables are followed by factored resistance tables . The factored resistance tables have characteristic design loads that are prefactored by the applicable reduction factors for a single anchor with no anchor-to-anchor spacing or edge distance adjustments for the convenience of the user of this document . All the figures in the previous ACI 318 Chapter 17 design section are applicable to Limit State Design and the tables will reference these figures .
For a detailed explanation of the tables developed in accordance with CSA A23.3 Annex D , refer to Section 3.1.8 . Technical assistance is available by contacting Hilti Canada at ( 800 ) 363-4458 or at www . hilti . com .
Table 22 — Steel resistance for Hilti KH-EZ , KH-EZ P , KH-EZ PM , KH-EZ PL , KH-EZ C and KH-EZ CRC carbon steel screw anchor 1 , 2
Nominal anchor diameter in .
1 / 4
3 / 8
1 / 2
5 / 8
3 / 4
Nominal embedment in . ( mm )
Tensile 3
N sar lb ( kN )
Shear 4
V sar lb ( kN )
Seismic shear 5
V sar , eq lb ( kN )
1-5 / 8 2-1 / 2 3,370 855 770 ( 41 ) ( 64 ) ( 15.0 ) ( 3.8 ) ( 3.4 ) 1-5 / 8 2-1 / 8 5,475 2,030 2,030 ( 41 ) ( 54 ) ( 24.4 ) ( 9.0 ) ( 9.0 ) 2-1 / 2 3-1 / 4 6,150 2,865 1,720 ( 64 ) ( 83 ) ( 27.4 ) ( 12.7 ) ( 7.7 ) 2-1 / 4 3 4-1 / 4 10,780 5,110 3,065 ( 57 ) ( 76 ) ( 108 ) ( 48.0 ) ( 22.7 ) ( 13.6 ) 3-1 / 4 4 5 14,405 6,200 3,720 ( 83 ) ( 102 ) ( 127 ) ( 64.1 ) ( 27.6 ) ( 16.5 )
4 6-1 / 4 19,050 9,205 6,385 ( 102 ) ( 159 ) ( 84.7 ) ( 40.9 ) ( 28.4 )
1 See PTG Ed . 21 Section 3.1.8 to convert design strength value to ASD value . 2 Hilti KH-EZ carbon steel screw anchors are to be considered brittle 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 uta
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 PTG Ed . 21 Section 3.1.9 for additional information on seismic applications .
3.3.6
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
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