Anchor Fastening Technical Guide , Edition 22
Table 2 — Hilti KH-EZ SS316 and KH-EZ C SS316 design strength based on concrete failure modes in uncracked concrete per ACI 318 Ch . 17 1 , 2 , 3 , 4
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Nominal anchor diameter in .
1 / 4
3 / 8
1 / 2
Effective Embed . in . ( mm )"
1.19 ( 30 ) 1.93 ( 49 ) 1.49 ( 38 ) 1.92 ( 49 ) 2.55 ( 65 ) 1.56 ( 40 ) 2.20 ( 56 ) 3.26 ( 83 )
Nominal embed . in . ( mm )"
1 5 / 8 ( 41 ) 2 1 / 2 ( 64 ) 2 ( 51 ) 2 1 / 2 ( 64 ) 3 1 / 4 ( 83 ) 2 1 / 4 ( 57 ) 3 ( 76 ) 4 1 / 4 ( 108 )
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ƒ ' c
= 2,500 psi ( 17.2 MPa ) lb ( kN )
855 ( 3.8 ) 1,450 ( 6.4 ) 1,595 ( 7.1 ) 2,335 ( 10.4 ) 3,575 ( 15.9 ) 1,445 ( 6.4 ) 2,425 ( 10.8 ) 4,370 ( 19.4 )
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ƒ ' c
= 3,000 psi ( 20.7 MPa ) lb ( kN )
940 ( 4.2 ) 1,585 ( 7.1 ) 1,750 ( 7.8 ) 2,555 ( 11.4 ) 3,915 ( 17.4 ) 1,585 ( 7.1 ) 2,655 ( 11.8 ) 4,790 ( 21.3 )
Tension - фN n
ƒ ' c
= 4,000 psi ( 27.6 MPa ) lb ( kN )
1,085 ( 4.8 ) 1,830 ( 8.1 ) 2,020 ( 9.0 ) 2,955 ( 13.1 ) 4,520 ( 20.1 ) 1,830 ( 8.1 ) 3,065 ( 13.6 ) 5,530 ( 24.6 )
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ƒ ' c
= 6,000 psi ( 41.4 MPa ) lb ( kN )
1,325 ( 5.9 ) 2,245 ( 10.0 ) 2,470 ( 11.0 ) 3,615 ( 16.1 ) 5,535 ( 24.6 ) 2,240 ( 10.0 ) 3,755 ( 16.7 ) 6,770 ( 30.1 )
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ƒ ' c
= 2,500 psi ( 17.2 MPa ) lb ( kN )
1,090 ( 4.8 ) 2,250 ( 10.0 ) 1,720 ( 7.7 ) 2,515 ( 11.2 ) 7,695 ( 34.2 ) 1,840 ( 8.2 ) 3,085 ( 13.7 ) 11,125 ( 49.5 )
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ƒ ' c
= 3,000 psi ( 20.7 MPa ) lb ( kN )
1,195 ( 5.3 ) 2,465 ( 11.0 ) 1,885 ( 8.4 ) 2,755 ( 12.3 ) 8,430 ( 37.5 ) 2,015 ( 9.0 ) 3,380 ( 15.0 ) 12,185 ( 54.2 )
Shear - фV n
ƒ ' c
= 4,000 psi ( 27.6 MPa ) lb ( kN )
1,380 ( 6.1 ) 2,850 ( 12.7 ) 2,175 ( 9.7 ) 3,180 ( 14.1 ) 9,735 ( 43.3 ) 2,330 ( 10.4 ) 3,900 ( 17.3 ) 14,070 ( 62.6 )
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ƒ ' c
= 6,000 psi ( 41.4 MPa ) lb ( kN )
1,690 ( 7.5 ) 3,490 ( 15.5 ) 2,665 ( 11.9 ) 3,895 ( 17.3 ) 11,925 ( 53.0 ) 2,850 ( 12.7 ) 4,775 ( 21.2 ) 17,235 ( 76.7 )
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Table 3 — Hilti KH-EZ SS316 and KH-EZ C SS316 design strength based on concrete failure modes in cracked concrete per ACI 318 Ch . 17 1 , 2 , 3 , 4 , 5
Nominal anchor diameter in .
1 / 4
3 / 8
1 / 2
Effective Embed . in . ( mm )"
1.19 ( 30 ) 1.93 ( 49 ) 1.49 ( 38 ) 1.92 ( 49 ) 2.55 ( 65 ) 1.56 ( 40 ) 2.20 ( 56 ) 3.26 ( 83 )
Nominal embed . in . ( mm )"
1 5 / 8 ( 41 ) 2 1 / 2 ( 64 ) 2 ( 51 ) 2 1 / 2 ( 64 ) 3 1 / 4 ( 83 ) 2 1 / 4 ( 57 ) 3 ( 76 ) 4 1 / 4 ( 108 ) ƒ ' c
= 2,500 psi ( 17.2 MPa ) lb ( kN )
315 ( 1.4 ) 495 ( 2.2 ) 980 ( 4.4 ) 1,440 ( 6.4 ) 2,250 ( 10.0 ) 1,125 ( 5.0 ) 1,885 ( 8.4 ) 3,400 ( 15.1 ) ƒ ' c
= 3,000 psi ( 20.7 MPa ) lb ( kN )
320 ( 1.4 ) 530 ( 2.4 ) 1,075 ( 4.8 ) 1,575 ( 7.0 ) 2,465 ( 11.0 ) 1,235 ( 5.5 ) 2,065 ( 9.2 ) 3,725 ( 16.6 )
Tension - фN n ƒ ' c
= 4,000 psi ( 27.6 MPa ) lb ( kN )
335 ( 1.5 ) 585 ( 2.6 ) 1,240 ( 5.5 ) 1,820 ( 8.1 ) 2,845 ( 12.7 ) 1,425 ( 6.3 ) 2,385 ( 10.6 ) 4,300 ( 19.1 ) ƒ ' c
= 6,000 psi ( 41.4 MPa ) lb ( kN )
355 ( 1.6 ) 670 ( 3.0 ) 1,520 ( 6.8 ) 2,230 ( 9.9 ) 3,485 ( 15.5 ) 1,745 ( 7.8 ) 2,920 ( 13.0 ) 5,265 ( 23.4 ) ƒ ' c
= 2,500 psi ( 17.2 MPa ) lb ( kN )
770 ( 3.4 ) 1,595 ( 7.1 ) 1,080 ( 4.8 ) 1,585 ( 7.1 ) 4,845 ( 21.6 ) 1,430 ( 6.4 ) 2,400 ( 10.7 ) 8,655 ( 38.5 ) ƒ ' c
= 3,000 psi ( 20.7 MPa ) lb ( kN )
845 ( 3.8 ) 1,750 ( 7.8 ) 1,185 ( 5.3 ) 1,735 ( 7.7 ) 5,310 ( 23.6 ) 1,570 ( 7.0 ) 2,625 ( 11.7 ) 9,480 ( 42.2 )
Shear - фV n
1 See PTG Ed . 21 Section 3.1.8 to convert design strength value to ASD value . 2 Linear interpolation between embedment depths and concrete compressive strengths is not permitted . 3 Apply spacing , edge distance , and concrete thickness factors in Tables 6 through 11 as necessary . Compare to the steel values in Table 4 .
The lesser of the values is to be used for the design . 4 Tabular values are for normal weight concrete only . For lightweight concrete multiply design strength by λ α as follows :
For sand-lightweight , λ α = 0.68 . For all-lightweight , λ α
= 0.60 . 5 Tabular values are for static loads only . For seismic tension loads , multiply cracked concrete tabular values in tension by the following reduction factors :
1 / 4-in diameter by 1-5 / 8-in nominal embedment depth - α N , seis = 0.51
All other sizes - α N , seis
= 0.75 No reduction needed for seismic shear . See PTG Ed . 21 Section 3.1.8 for additional information on seismic applications . ƒ ' c
= 4,000 psi ( 27.6 MPa ) lb ( kN )
975 ( 4.3 ) 2,020 ( 9.0 ) 1,370 ( 6.1 ) 2,000 ( 8.9 ) 6,130 ( 27.3 ) 1,810 ( 8.1 ) 3,035 ( 13.5 ) 10,945 ( 48.7 ) ƒ ' c
= 6,000 psi ( 41.4 MPa ) lb ( kN )
1,195 ( 5.3 ) 2,470 ( 11.0 ) 1,675 ( 7.5 ) 2,450 ( 10.9 ) 7,505 ( 33.4 ) 2,220 ( 9.9 ) 3,715 ( 16.5 ) 13,405 ( 59.6 )
3.3.7
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.7 KWIK HUS-EZ SS316 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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