Table 10 — Hilti HIT-HY 270 allowable adhesive bond loads for threaded rods in the face of hollow concrete masonry units 1 , 3 , 7 , 9 , 10
Nominal anchor diameter in .
1 / 4
5 / 16
3 / 8
1 / 2
Embedment in . ( mm ) 2
2 ( 51 )
Tension load lb ( kN )
Installation in the cell lb ( kN ) 4 , 5 , 8
220 ( 1.0 )
390 ( 1.7 )
390 ( 1.7 )
390 ( 1.7 )
Installation in the bed joint lb ( kN ) 5 , 8
300 ( 1.3 )
300 ( 1.3 )
300 ( 1.3 )
330 ( 1.5 )
Critical and minimum edge distance for tension , c cr and c min in ( mm )
4 ( 102 )
Shear load at c cr lb ( kN ) Edge distances for shear 6
Installation in the cell lb ( kN ) 4 , 5 , 8
355 ( 1.6 )
630 ( 2.8 )
645 ( 2.9 )
670 ( 3.0 )
Installation in the bed joint lb ( kN ) 5 , 8
385 ( 1.7 )
435 ( 1.9 )
550 ( 2.4 )
755 ( 3.4 )
Critical
c cr in . ( mm )
4 ( 102 )
12 ( 305 )
12 ( 305 )
12 ( 305 )
Minimum
c min in . ( mm )
4 ( 102 )
Load reduction factor @ c min
1.00
0.73
0.73
0.73
Table 11 — Hilti HIT-HY 270 allowable adhesive bond loads for Hilti HIT-IC inserts in the face of hollow concrete masonry units 1 , 3 , 7 , 9 , 10
Nominal anchor diameter in .
# 14 Screw
5 / 16-18 UNC
3 / 8-16 UNC
1 / 2-13 UNC
Embedment in . ( mm ) 2
2 ( 51 )
Tension load , installation in the cell lb ( kN ) 4 , 5 , 8
190 ( 0.8 )
415 ( 1.8 )
480 ( 2.1 )
495 ( 2.2 )
Critical and minimum edge distance for tension , c cr and c min in ( mm )
4 ( 102 )
Shear load , installation in the cell lb ( kN ) 4 , 5 , 8
235 ( 1.0 )
605 ( 2.7 )
Critical
c cr in . ( mm )
4 ( 102 )
12 ( 305 )
Edge distances for shear 6 Minimum
c min in . ( mm )
4 ( 102 )
Load reduction factor @ c min
The following footnotes apply to both Tables 9 and 10 :
1 All values are for anchors installed in hollow concrete masonry with minimum masonry strength of 1500 psi . Concrete masonry units must be light- , medium , normal-weight conforming to ASTM C90 . 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 CMU masonry wall . A maximum of two anchors may be installed in a single cell of the hollow CMU block . 4 Tabulated values are for anchors installed in the cell of the hollow CMU . Installation in other locations of the hollow CMU ( mortar joints , flange , or cell web ) is not permitted .
5 Two anchors may be spaced as close as 4 inches apart with no reduction in tension or shear capacity . EXCEPTION : Two 3 / 8-inch diameter HIT-IC inserts and two ½-inch diameter HIT-IC inserts installed in the same cell spaced as close as 4 inches require a 20 % reduction in the tension capacity .
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 any 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 values tabulated above 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
620 ( 2.8 )
620 ( 2.8 )
12 ( 305 )
12 ( 305 )
1.00
0.80
0.78
0.75
184 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