Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 338

Table 4 — Steel design strength for Hilti KH-EZ , KH-EZ P , KH-EZ PM , KH-EZ PL , KH-EZ C and KH-EZ CRC anchors 1 , 2
Anchor diameter in . ( mm )
1 / 4 ( 6.4 )
3 / 8 ( 9.5 )
1 / 2 ( 12.7 )
5 / 8 ( 15.9 )
3 / 4 ( 19.1 )
Nominal embedment depth in . ( mm )
Tensile 3
фN sa lb ( kN )
Shear 4
фV sa lb ( kN )
1-5 / 8 2-1 / 2 3,945 930 835
Seismic shear 5
фV sa , eq lb ( kN )
( 41 ) ( 64 ) ( 17.5 ) ( 4.1 ) ( 3.7 ) 1-5 / 8 2-1 / 8 5,980 2,200 2,200 ( 41 ) ( 54 ) ( 26.6 ) ( 9.8 ) ( 9.8 ) 2-1 / 2 3-1 / 4 6,720 3,110 1,865 ( 64 ) ( 83 ) ( 29.9 ) ( 13.8 ) ( 8.3 ) 2-1 / 4 3 4-1 / 4 11,780 5,545 3,330 ( 57 ) ( 76 ) ( 108 ) ( 52.4 ) ( 24.7 ) ( 14.8 ) 3-1 / 4 4 5 15,735 6,735 4,040
( 83 ) ( 102 ) ( 127 ) ( 70.0 ) ( 30.0 ) ( 18.0 ) 4 6-1 / 4 20,810 9,995 6,935
( 102 ) ( 159 ) ( 92.6 ) ( 44.5 ) ( 30.8 )
1 See PTG Ed . 21 Section 3.1.8 to convert design strength value to ASD value . 2 Hilti KH-EZ anchors are to be considered brittle steel elements . 3 Tensile фN sa
= ф A se , N f uta as noted in ACI 318 Chapter 17 . 4 Shear values determined by static shear tests with фVsa < ф 0.60 Ase , V futa as noted in ACI 318 Chapter 17 . 5 Seismic shear values determined by seismic shear tests with фV sa
≤ ф 0.60 A se , V f uta as noted in ACI 318 Chapter 17 .
See PTG Ed . 21 Section 3.1.8 for additional information on seismic applications .
Figure 2
Anchors not permitted in shaded area
c min , 1 c min , 2
Case 2
Case 1
For a specific edge distance , the permitted spacing is calculated as follows :
( s min , 1 – s min , 2
) s ≥ s min , 2
+ ___________ ( c – c min , 2 )
( c min , 1 – c min , 2
)
spacing s
s design
c min , 1 at s min , 1
c min , 2 at s min , 2
s min , 2 s min , 1
Concrete Edge c designedge distance c
Table 5 — Hilti KH-EZ , KH-EZ P , KH-EZ PM , KH-EZ PL , KH-EZ C and KH-EZ CRC specifications 1
Setting information Symbol Units
Nominal anchor diameter 1 / 4 3 / 8 1 / 2 5 / 8 3 / 4
Effective minimum embedment h ef in . 1.18 1.92 1.11 1.54 1.86 2.50 1.50 2.16 3.22 2.39 3.03 3.88 2.92 4.84
Minimum member thickness h min in . 3-1 / 4 4-1 / 8 3-1 / 4 3-2 / 3 4 4-7 / 8 4-1 / 2 4-3 / 4 6-3 / 4 5 6 7 6 8-1 / 8
Case 1
Case 2 c min , 1 in . 1.50 1.75 for s min , 1 ≥ in . 3 4 c min , 2 in . 2 2.78 2.63 2.75 2.92 3.75 1.75 3.63 4.57 5.81 4.41 7.28 for s min , 2
≥ in . 1.50 2.25 3
1 Linear interpolation is permitted to establish an edge distance and spacing combination between Case 1 and Case 2 . Linear interpolation for a specific edge distance c , where c min , 1
< c < c min , 2 will determine the permissible spacings .
334 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