Anchor Fastening Technical Guide , Edition 22
Table 51 — Allowable tensile and shear loads for Hilti KB-TZ2 carbon and stainless steel anchors in the top of grout-filled concrete masonry walls 1 , 3 , 4 , 5 , 6
Nominal anchor diameter
Nominal embedment
Minimum edge distance from edge of wall ,
C min
Minimum spacing , 2
s min
Minimum end distance
C end
Allowable tensile capacity
Allowable shear capacity
Parallel to edge of masonry wall
Perpendicular to edge of masonry wall
in . in . ( mm ) in ( mm ) in ( mm ) in ( mm ) lb ( kN ) lb ( kN ) lb ( kN )
3 / 8
1 / 2
5 / 8
1-7 / 8 ( 48 )
6 ( 152 ) 12 ( 305 ) 300 ( 1.3 ) 325 ( 1.4 ) 175 ( 0.8 ) 3 ( 76 ) 10 ( 254 ) 12 ( 305 ) 395 ( 1.8 ) 475 ( 2.1 ) 220 ( 1.0 )
1-3 / 4 ( 44 ) 2-1 / 2 ( 64 ) 8 ( 203 ) 12 ( 305 ) 385 ( 1.7 ) 500 ( 2.2 ) 195 ( 0.9 )
3-3 / 4 ( 95 ) 13 ( 330 ) 12 ( 305 ) 485 ( 2.2 ) 610 ( 2.7 ) 240 ( 1.1 ) 3-1 / 4 ( 83 )
11 ( 279 ) 12 ( 305 ) 620 ( 2.8 ) 930 ( 4.1 ) 410 ( 1.8 )
2-3 / 4 ( 70 ) 4-1 / 2 ( 114 ) 16 ( 406 ) 12 ( 305 ) 865 ( 3.8 ) 1240 ( 5.5 ) 465 ( 2.1 )
1 Values valid for anchors installed in face shells of Type 1 , Grade N , lightweight , medium-weight , or normal-weight concrete masonry units conforming to ASTM C90 . The masonry units must be fully grouted with coarse grout conforming to 2018 and 2015 IBC Section 2103.3 , 2012 IBC Section 2103.13 , or 2009 IBC Section 2103.12 . Mortar must comply with 2018 and 2015 IBC Section 2103.2.1 , 2012 IBC Section 2103.9 , or 2009 IBC Section 2103.8 . Masonry compressive strength must be at least 1,500 psi at the time of anchor installation .
2 Loads tabulated are applicable to anchors spaced a critical distance of 4 times the effective embedment . The anchors may be placed at a minimum spacing , s min , provided that reductions are applied to the tabulated values . 3 Anchors must be installed a minimum of 1-3 / 8 inches from any head joint in accordance with Figure 6 . 4 Embedment depth must be measured from the outside face of the concrete masonry unit . 5 For intermediate edge and spacing distances , allowable loads may be determined by linearly interpolating between the allowable loads at the two tabulated edge or spacing distances . 6 The tabulated allowable loads have been calculated based on a safety factor of 5.0 .
Figure 7 — Acceptable locations ( shaded areas ) for Hilti KB-TZ2 anchors in the face of grout-filled CMU walls
3.3.5
minimum edge distance |
critical edge distance |
No installation within |
|
|
1-3 / 8 " of head joint |
minimum edge distance
critical edge distance
Mortar Joint
Anchor installation is restricted to shaded areas
Installations in this area for full allowable load capacity
Concrete Masonry Unit ( Grouted )
Installation in this area for reduced allowable load capacity
Figure 8 — Edge and end distances for the Hilti KB-TZ2 anchors installed in the top of grout-filled CMU walls
Edge Distance KB-TZ2
End Distance
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
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