Anchor Fastening Technical Guide , Edition 22
Table 28 — Hilti KH-EZ , KH-EZ P , KH-EZ PM , KH-EZ PL , KH-EZ C and KH-EZ CRC steel screw anchor factored resistance in the top of uncracked concrete over metal deck 1 , 2 , 3 , 4 , 5
Nominal anchor diameter in .
1 / 4
3 / 8
Effective embed . in . ( mm )
Nominal embed . in . ( mm ) ƒ ' c
= 20 MPa ( 2,900psi ) lb ( kN )
Tension - N r ƒ ' c
= 30 MPa ( 4,350 psi ) lb ( kN ) ƒ ' c
= 20 MPa ( 2,900 psi ) lb ( kN )
Shear - V r ƒ ' c
= 30 MPa ( 4,350 psi ) lb ( kN )
1.18 1-5 / 8 665 750 805 985 ( 30 ) ( 41 ) ( 3.0 ) ( 3.3 ) ( 3.6 ) ( 4.4 ) 1.11 1-5 / 8 980 1,200 980 1,200 ( 28 ) ( 41 ) ( 4.4 ) ( 5.3 ) ( 4.4 ) ( 5.3 )
Table 29 — Hilti KH-EZ , KH-EZ P , KH-EZ PM , KH-EZ PL , KH-EZ C and KH-EZ CRC steel anchor factored resistance in the top of cracked concrete over metal deck 1 , 2 , 3 , 4 , 5
Nominal anchor diameter in .
1 / 4
3 / 8
Effective embed . in . ( mm )
Nominal embed . in . ( mm ) ƒ ' c
= 20 MPa ( 2,900psi ) lb ( kN )
Tension - N r ƒ ' c
= 30 MPa ( 4,350 psi ) lb ( kN ) ƒ ' c
= 20 MPa ( 2,900 psi ) lb ( kN )
Shear - V r ƒ ' c
= 30 MPa ( 4,350 psi ) lb ( kN )
1.18 1-5 / 8 340 385 565 690 ( 30 ) ( 41 ) ( 1.5 ) ( 1.7 ) ( 2.5 ) ( 3.1 ) 1.11 1-5 / 8 510 620 685 840 ( 28 ) ( 41 ) ( 2.3 ) ( 2.8 ) ( 3.0 ) ( 3.7 )
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 20 and 21 as necessary . Compare to the steel values in table 22 . 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 a as follows : for sand-lightweight , λ a = 0.68 ; for all-lightweight , λ a
= 0.60
5 Tabular values are for static loads only . Seismic design is not permitted for uncracked concrete . For seismic tension loads , multiply cracked concrete tabular values in tension by the following reduction factors :
1 / 4-inch diameter - α N , seis = 0.60
3 / 8-inch diameter- 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 .
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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