Adhesive Anchoring Systems
HIT-HY 70 Hybrid for Masonry Construction 3.2.6
3.2.6
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 219
Table 8 - HIT-HY 70 allowable adhesive bond loads for threaded rods in the face of hollow concrete masonry units
1, 2, 3, 4,10
Nominal
anchor
diameter
Effective
embedment
in. (mm)
5
Tension
lb (kN)
6, 7, 8
Minimum edge
distance c
min
in. (mm)
9
Load reduction
factor @ c
min
Shear
lb (kN)
6, 7, 8
Edge distance
6
Critical c
cr
in. (mm)
Minimum c
min
in. (mm)
Load reduction
factor @ c
min
1/4
2
(51)
220
(1.0)
4
(102)
1.00
355
(1.6)
4
(101.6)
4
(102)
1.00
5/16
390
(1.7)
630
(2.8)
12
(304.8)
0.73
3/8
390
(1.7)
645
(2.8)
12
(304.8)
0.73
1/2
390
(1.7)
670
(3.0)
12
(304.8)
0.73
Table 9 - HIT-HY 70 allowable adhesive bond loads for HIT-IC inserts in the face of hollow concrete masonry units
1, 2, 3, 4,10
Thread
size
Effective
embedment
in. (mm)
5
Tension
lb (kN)
6, 7, 8
Minimum edge
distance c
min
in. (mm)
9
Load reduction
factor @ c
min
Shear
lb (kN)
6, 7, 8
Edge distance
6
Critical c
cr
in. (mm)
Minimum c
min
in. (mm)
Load reduction
factor @ c
min
#14 Screw
2
(51)
190
(0.8)
4
(102)
1.00
235
(1.0)
4
(101.6)
4
(102)
1.00
5/16-18
UNC
415
(1.8)
605
(2.7)
12
(304.8)
0.80
3/8-16
UNC
480
5
(2.1)
620
(2.8)
12
(304.8)
0.78
1/2-13
UNC
495
5
(2.2)
620
(2.8)
12
(304.8)
0.75
1 All values are for anchors installed in hollow concrete masonry with minimum masonry prism strength of 1,500 psi. Concrete masonry units shall be lightweight, medium-weight
or normal-weight conforming to ASTM C90. Allowable loads are calculated using a safety factor of 5.
2 Anchors shall be installed in the face of the ungrouted concrete block wall. A maximum of two anchors for each cell of the hollow ungrouted concrete block is allowed.
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 the length of the plastic HIT-SC screens.
6 Tabulated values are for one anchor installed in the cell of the ungrouted concrete block. Installation in other locations of the the mortars joints, flange or web of the concrete
block is not permitted.
7 The minimum spacing, s
min
, for which values are available and installation is recommended, is equal to 4 inches. Two anchors installed in adjacent cells may be spaced as
close as 4 inches apart without any load reduction. Two anchors installed in the same cell can be spaced as close as 4 inches apart without any load reduction, except for the
3/8- and 1/2-in. diameter HIT-IC inserts, where a 20% reduction needs to be applied to the allowable tension load.
8 Allowable loads must be the lesser of the adjusted masonry or bond tabulated values 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
h
o
h
ef
d
o
Figure 5 - HIT-HY 70 specifications
for HIT-V/HAS threaded rod in hollow
masonry and brick with holes
h
o
h
ef
d
o
screw
engagement
length
Figure 6 - HIT-HY 70 specifications
for HIT-IC in hollow masonry and
brick with holes