1 , 3 , 4 , 8 , 9 , 10 , 11
Table 12 — Hilti HIT-HY 270 allowable adhesive bond tension loads for threaded rods in the face of hollow brick
Nominal anchor diameter in . |
Effective embedment in . ( mm ) 2
|
Tension lb ( kN ) |
Critical
s cr in . ( mm )
|
Spacing 5 Edge distance 6
Minimum
s min in . ( mm )
Load reduction factor @ s min
7
Critical
c cr in . ( mm )
Minimum
c min in . ( mm )
|
Load reduction factor @ c min
7
|
|
1 / 4
5 / 16
3 / 8
1 / 2
|
3-1 / 8 ( 79 ) |
530 ( 2.4 )
735 ( 3.3 )
905 ( 4.0 )
905 ( 4.0 )
|
8 ( 203 ) |
4 ( 102 ) |
0.88
0.93
0.82 |
6 3 / 8 |
4 |
0.80 |
0.54 |
( 162 ) |
( 102 ) |
0.83 |
0.50 1.00
|
1 , 3 , 4 , 8 , 9 , 10 , 11
Table 13 — Hilti HIT-HY 270 allowable adhesive bond shear loads for threaded rods in the face of hollow brick
Nominal anchor diameter in .
1 / 4
5 / 16
3 / 8
1 / 2
Effective embedment in . ( mm ) 2
3-1 / 8 ( 79 )
Shear lb ( kN )
370 ( 1.6 )
595 ( 2.6 )
1,045 ( 4.6 )
1,685 ( 7.5 )
Critical
s cr in . ( mm )
8 ( 203 )
Spacing 5 Edge distance 6 Minimum
s min in . ( mm )
4 ( 102 )
Load reduction factor @ s min
7
0.84
0.81
Critical
c cr in . ( mm )
8 ( 203 )
8 ( 203 )
Minimum
c min in . ( mm )
4 ( 102 )
Load reduction factor @ c min
7
The following footnotes apply to both Tables 11 and 12 :
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 the anchor installed in the center of the hollow brick , mortar joints , flanges , or cell web ( all wall face locations permitted ). 5 The critical spacing , s cr
, is the anchor spacing where full load values in the table 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 . 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 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 ).
8 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 .
9 Allowable loads must be the lesser of the adjusted bond tabulated values and the steel values given in table 3 . 10 Tabulated allowable bond loads must be adjusted for increased base material temperatures in accordance with Figure 13 , as applicable . 11 For combined loading : ( T applied
/ T allowable ) + ( V applied
/ V allowable ) ≤ 1
0.59
0.50
12 ( 305 )
12 ( 305 )
0.86
0.93
0.54
0.36
186 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