Anchor Fastening Technical Guide , Edition 22
Table 14 — Hilti HIT-HY 270 allowable adhesive bond loads for HIT-IC inserts in the face of hollow brick 1 , 3 , 4 , 5 , 7 , 8 , 9 , 10
Thread size # 14 Screw
5 / 16-18 UNC
3 / 8-16 UNC
1 / 2-13 UNC
Effective embedment in . ( mm ) 2
2 ( 51 )
3-1 / 8 ( 79 )
Tension lb ( kN )
170 ( 0.8 )
880 ( 3.9 )
880 ( 3.9 )
990 ( 4.4 )
Critical and minimum edge distance for tension , c cr and c min in . ( mm )
6 3 / 8 ( 162 )
Shear lb ( kN )
222 ( 1.0 )
655 ( 2.9 )
Critical
c cr in . ( mm )
8 ( 203 )
8 ( 203 )
Edge distance for shear 6 Minimum
c min in . ( mm )
8 ( 203 )
Load reduction factor @ c min
1 All values are for anchors installed in hollow brick masonry with minimum masonry strength of 3000 psi . Hollow brick units must be in conformance with ASTM C652 . Allowable loads have been calculated using a safety factor of 5 .
2 Tabulated embedment depth is limited by the length of the plastic HIT-SC screens . 3 Anchors must be installed in the face of the hollow brick masonry wall . 4 Tabulated values are for one anchor installed in the hollow brick , mortar joints , flanges , or cell web ( all wall face locations permitted ).
5 One anchor is permitted to be installed in each brick . Two anchors installed in adjacent bricks may be spaced as close as 8 inches apart with no load reduction .
6 The critical edge distance , c cr , is the edge distance where full load values in the table may be used . The minimum edge distance , c min
, is the minimum edge distance for which values are available and installation is permitted . Edge distance is measured from the center of the anchor to each edge .
7 Anchors are not recognized for resisting earthquake forces . When using the basic load combinations in accordance with IBC Section 1605.3.1 , or the alternative basic load combinations in IBC Section 1605.3.2 , tabulated allowable loads must not be increased for wind loading .
8 Allowable loads must be the lesser of the adjusted bond tabulated values and the steel values given in table 3 . 9 Tabulated allowable bond loads must be adjusted for increased base material temperatures in accordance with Figure 13 , as applicable . 10 For combined loading : ( T applied
/ T allowable ) + ( V applied
/ V allowable ) ≤ 1
1,235 ( 5.5 )
1,895 ( 8.4 )
12 ( 305 )
12 ( 305 )
1.00
1.00
0.66
0.44
3.2.4
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
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