Table 8 — Hilti HIT-HY 270 allowable adhesive bond tension loads for HIS-N and HIS-RN inserts in the face of grout-filled concrete masonry walls 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8
Spacing 9 Edge distance 10
|
Thread size |
Effective embedment in . ( mm ) 11
|
Tension lb ( kN ) |
Critical
s cr in . ( mm )
|
Minimum
s min in . ( mm )
|
Load reduction factor @
s min
12
|
Critical
c cr in . ( mm )
|
Minimum
c min in . ( mm )
|
Load reduction factor @
c min
12
|
|
3 / 8-16 UNC
1 / 2-13 UNC
|
4-3 / 8 ( 110 )
5 ( 125 )
|
2,075 ( 9.2 )
2,710 ( 12.1 )
|
17 ( 432 ) 4
20 ( 508 )
( 102 )
|
0.55
0.55
|
12 ( 305 ) 4
20 ( 508 )
( 102 )
|
0.82
0.63
|
Table 9 — Hilti HIT-HY 270 allowable adhesive bond shear loads for HIS-N and HIS-RN inserts in the face of grout-filled concrete masonry walls 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8
Thread size
3 / 8-16 UNC
1 / 2-13 UNC
Effective embedment in . ( mm ) 11
4-3 / 8 ( 110 )
5 ( 125 )
Shear lb ( kN )
1,100 ( 4.9 )
2,065 ( 9.2 )
Critical
s cr in . ( mm )
Spacing 9 Edge distance 10
Minimum
s min in . ( mm )
17.0 ( 432 ) 4
20 ( 508 )
( 102 )
Load reduction factor @
s min
12
0.74
0.71
Critical
c cr in . ( mm )
Minimum
c min in . ( mm )
12 ( 305 ) 4
20 ( 508 )
( 102 )
Load reduction factor
Load perpendicular to edge
Load parallel to edge
0.72 1.00
0.40 0.87
The following footnotes apply to both Tables 7 and 8 :
1 All values are for anchors installed in fully grouted concrete masonry with minimum masonry prism strength of 1,500 psi . Concrete masonry units shall be lightweight , medium-weight or heavy-weight conforming to ASTM C90 . Allowable loads are calculated using a safety factor of 5 .
2 Anchors may be installed in any location in the face of the masonry wall including cell , web , and mortar joints . Anchors are limited to one per masonry cell . See Figure 2 . 3 Linear interpolation of load values between minimum spacing ( s min
) and critical spacing ( s cr ) and between minimum edge distance ( c min
) and critical edge distance ( c cr
) is permitted .
4 Concrete masonry thickness must be equal to or greater than 1.5 times the anchor embedment depth .
5 When using the basic load combinations in accordance with IBC Section 1605.3.1 , tabulated allowable loads must not be increased for seismic or wind loading . When using the alternative basic load combinations in IBC Section 1605.3.2 that include seismic or wind loads , tabulated allowable loads may be increased by 33-1 / 3 percent , or the alternative basic load combinations may be reduced by a factor of 0.75 .
6 Allowable loads must be the lesser of the adjusted bond tabulated values and the steel values given in tables 3 and 4 . 7 Tabulated allowable loads shall be adjusted for increased base material temperatures in accordance with figure 13 . 8 For combined loading : ( T applied
/ T allowable ) n + ( V applied
/ V allowable ) n ≤ 1 where n = 5 / 3
9 The critical spacing , s cr , is the anchor spacing where full load values may be used . The minimum spacing , s min
, is the minimum anchor spacing for which values are available and installation is recommended . Spacing is measured from the center of one anchor to the center of an adjacent anchor . 10 The critical edge distance , c cr
, is the edge distance where full load values may be used . The minimum edge distance , c min , is the minimum edge distance for which values are available and installation is recommended . Edge distance is measured from the center of the anchor to each edge . 11 Embedment depth is measured from the outside face of the concrete masonry unit . 12 Load reduction factors are multiplicative : both spacing and edge distance load reduction factors , and spacing and edge distances for all adjacent anchors / edges less than s cr
/ c cr , must be considered . Load values for anchors installed at less than s cr and c cr must be multiplied by the appropriate load reduction factor based on actual edge distance ( c ) and spacing ( s ).
182 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.2.4 HIT-HY 270 HYBRID FOR MASONRY CONSTRUCTION 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