Adhesive Anchoring Systems
3.2.6 HIT-HY 70 Hybrid for Masonry Construction
220 Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Anchor Fastening Technical Guide 2016
Table 11 - HIT-HY 70 allowable adhesive bond loads for HIT-IC inserts in the face of hollow brick
1, 2, 3, 4, 5, 10
Thread
size
Effective
embedment
Tension
Minimum edge
distance c
min
Load
reduction
factor @ c
min
Shear
Edge distance
6
Critical c
cr
Minimum c
min
Load reduction
factor @ c
min
in.
(mm)
6
lb (kN)
7, 8
in.
(mm)
9
lb
(kN)
7, 8
in.
(mm)
in.
(mm)
#14 Screw
2
(51)
170 (0.8)
8
(203)
1.00
222 (1.0)
12
(304.8)
8
(203)
1.00
5/16-18 UNC
3-1/8 (79)
880 (3.9)
650 (2.9)
1.00
3/8-16 UNC
880 (3.9)
1,290 (5.7)
0.63
1/2-13 UNC
990 (4.4)
1,780 (7.9)
0.47
1 All values are for anchors installed in hollow brick masonry with minimum masonry prism strength of 3,000 psi. Hollow brick units shall be conforming to ASTM C652.
Allowable loads are calculated using a safety factor of 5.
2 Anchors shall be installed in the face of the hollow brick masonry wall.
3 Anchors are not recognized for resisting earthquake forces. For short-term loading due to wind forces, the allowable loads shall not be increased.
4 Tabulated allowable loads shall be adjusted for increased base material temperatures in accordance with figure 12.
5 Tabulated embedment depth is limited by the length of the plastic HIT-SC screens.
6 Tabulated values are for one anchor installed in any location of the brick wall including the horizontal and head mortar joints.
7 One anchor shall be permitted to be installed in each brick. Two anchors may be spaced as close as the lesser of 2 bricks or 8 in. apart without any load reduction.
8 Allowable loads must be the lesser of the adjusted masonry or bond tabulated above and the steel values given in table 4.
9 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 recommended. Edge distance is measured from the center of the anchor to the closest edge.
10 For combined loading: (T
applied
/ T
allowable
) + (V
applied
/ V
allowable
) ≤ 1
Table 10 - HIT-HY 70 allowable adhesive bond loads for threaded rods in the face of hollow brick
1, 2, 3, 4, 5, 10
Nominal
anchor
diameter
Effective
embedment
Tension
Minimum edge
distance c
min
Load
reduction
factor @ c
min
Shear
Edge distance
6
Critical c
cr
Minimum c
min
Load reduction
factor @ c
min
in.
(mm)
6
lb (kN)
7, 8
in.
(mm)
9
lb
(kN)
7, 8
in.
(mm)
in.
(mm)
1/4
3-1/8 (79)
530 (2.4)
8
(203)
1.00
370 (1.6)
12 (304.8)
8
(203)
1.00
5/16
735 (3.3)
595 (2.6)
1.00
3/8
905 (4.0)
1,045 (4.7)
0.76
1/2
905 (4.0)
1,685 (7.5)
0.52
Table 12 - HIT-HY 70 allowable adhesive bond loads for threaded rods in multi-wythe solid brick walls
1, 2, 3, 4, 5, 6, 8
Nominal
anchor
diameter
Effective
embedment
7
Tension
Shear
Minimum
spacing s
min
Edge distance
6
Critical c
cr
Minimum c
min
Load reduction
factor @ c
min
in.
(mm)
lb
(kN)
lb
(kN)
in.
(mm)
in.
(mm)
in.
(mm)
3/8
6
(152)
895
(4.0)
680
(3.0)
16
(406)
16
(406)
8
(203)
0.5
10
(254)
1,325
(5.9)
795
(3.5)
1/2
6
(152)
895
(4.0)
1,075
(4.8)
10
(254)
1,455
(6.5)
1,115
(5.0)
5/8
6
(152)
1,025
(4.6)
1,405
(6.3)
10
(254)
1,955
(8.7)
1,445
(6.4)
3/4
8
(203)
1,575
(7.0)
1,985
(8.8)
13
(330)
2,135
(9.5)
1,985
(8.8)
1 All values are based on mortar shear strength of 45 psi or greater. Allowable loads are calculated using a safety factor of 5.
2 Anchors must be installed in the face of the multi-wythe URM wall. The wall must have a minimum thickness of 13 inches representing 3 wythes of brick..
3 Tabulated values are for maximum one anchor installed in the center of the brick of the multi-wythe URM wall.
4 Edge distance, c
min
, and spacing, s
min
, are the minimum distances for which values are available and installation is recommended. Edge distance is measured from the center of
the anchor to the closest edge. Spacing is measured from the center of one anchor to the center of an adjacent anchor.
5 Allowable loads must be the lesser of the adjusted masonry or bond tabulated values and the steel values given in table 4.
6 Tabulated allowable loads shall be adjusted for increased base material temperatures in accordance with figure 12.
7 Tabulated embedment depth is limited by the length of the plastic HIT-SC screens.
8 For combined loading: (T
applied
/ T
allowable
) + (V
applied
/ V
allowable
) ≤ 1
d
o
h
o
h
ef
Figure 8 - HIT-HY 70 specifications
for rebar in multi-wythe brick wall
d
o
h
o
h
ef
Figure 7 - HIT-HY 70 specifications for
HAS rods in multi-wythe brick wall