DESIGN DATA IN UNGROUTED CMU
HIT-HY 270 adhesive with Hilti HAS threaded rods and Hilti HIT-IC inserts in ungrouted CMU
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Hilti HAS Threaded Rods |
Hilti HIT-IC Inserts |
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Permissible Base
Materials
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Ungrouted Concrete Masonry |
Permissible drilling method |
Rotary only drilling with carbide tipped drill bit
Hilti TE-CD or TE-YD hollow drill bit
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Figure 3 — Hilti HIT-HY 270 with HAS threaded rod and HIT-IC internally threaded inserts in hollow concrete masonry walls min
Table 18 — Hilti HIT-HY 270 Installation Information for Threaded Rod and Hilti HIT-IC — Ungrouted CMU Construction , Face of Wall
Design Information Symbol Units
Nominal Anchor Diameter 1 / 4 ” 5 / 16 ” 3 / 8 ” 1 / 2 ”
Drill Bit Diameter — Threaded Rod d o in . 1 / 2 5 / 8 5 / 8 11 / 16
Drill Bit Diameter — HIT-IC d o in . N / A 5 / 8 7 / 8 7 / 8
Minimum Embedment Depth — Threaded Rod & HIT-IC h ef , min in . 2 2 2 2 ( mm ) ( 51 ) ( 51 ) ( 51 ) ( 51 )
Fixture Hole Diameter d f in . 9 / 32 3 / 8 7 / 16 9 / 16
Maximum Installation Torque T inst ft-lb 2.2 2.2 3 4.5
Minimum Masonry Thickness h min in . 7-5 / 8 ( mm ) ( 203 )
Critical Edge Distance ( Tension ) c cr , N in . 4 4 4 4 ( mm ) ( 102 ) ( 102 ) ( 102 ) ( 102 )
Minimum Edge Distance ( Tension ) 1 c min , N in . 2 2 2 2
( mm ) ( 51 ) ( 51 ) ( 51 ) ( 51 ) Multiplier at Minimum Edge Distance ( Tension ) - - 0.80
Threaded Rod
HIT-IC
Critical Edge Distance ( Shear ) c cr , V in . 3 3-3 / 4 4-1 / 2 6 ( mm ) ( 76 ) ( 95 ) ( 114 ) ( 152 )
Minimum Edge Distance ( Shear ) 1 c min , V in . 1-1 / 2 1-7 / 8 2-1 / 4 3 ( mm ) ( 38 ) ( 48 ) ( 57 ) ( 76 ) in .
5.16 6.36 7.56 Critical Edge Distance ( Shear ) c cr , V
N / A ( mm ) ( 131 ) ( 162 ) ( 192 )
in . 2-5 / 8 3-1 / 4 3-7 / 8
Minimum Edge Distance ( Shear ) 1 c min , V
N / A ( mm ) ( 67 ) ( 83 ) ( 98 )
Multiplier at Minimum Edge Distance ( Shear ) - - 0.50
Minimum Anchor Spacing s min in . 8 ( mm ) ( 203 )
1 The minimum distance from the center of an anchor to the centerline of a head joint ( vertical mortar joint ) is 2 ”.
48 Masonry Fastening Technical Guide Edition 24 | 7.1 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