DESIGN INFORMATION IN HOLLOW CORE CONCRETE PER ALLOWABLE STRESS DESIGN
Table 18 — Hilti KWIK HUS-EZ I and KWIK HUS-EZ E load values for installations into hollow core concrete panels 1 , 2
Hanger rod size anchor diameter in .
Min . effective embedment h ef in .
Min . effective base material thickness t in .
Allowable load 3
Figure 3 — Installation of Hilti KWIK HUS – EZ I and KH-EZ E in hollow core concrete
Ultimate load Tension lb Shear lb 4 , 5 Tension lb Shear lb 4 , 5
1 / 4-20 UNC 1 / 4 485
1,930 1-3 / 8 1-3 / 8 455
1,810 3 / 8-16 UNC 1 / 4 755 3,025
1 / 2-13 UNC 3 / 8 1-1 / 8 1-1 / 8 435 N / A 1,750 N / A
1 The admissible anchor location must be established to prevent damage to the prestressed cable during the drilling process . Verify the location and height of the cable with the hollow core plank supplier to confirm admissible anchor location .
2 Minimum compressive strength of prestressed concrete is 7,000 psi . Published ultimate loads represent the average results conducted in local base materials . Due to variations in materials and dimensionl configurations , on-site testing is required to determine the actual performance .
3 Allowable loads calculated with a factor of safety of 4 4 The bottom of the shear plane adjacent to the top of the coupler .
5 Shear values controlled by the steel strength of the screws used to fasten the shear fixture to the KH EZ-I Screw Anchor . The minimum tensile strength of the screw was 125 ksi . Shear design values should consider the screw or threaded rod steel strength .
INSTALLATION INSTRUCTIONS
Installation Instructions For Use ( IFU ) are included with each product package . They can also be viewed or downloaded online at www . hilti . com . Because of the possibility of changes , always verify that downloaded IFU are current when used . Proper installation is critical to achieve full performance . Training is available on request . Contact Hilti Technical Services for applications and conditions not addressed in the IFU .
3.3.8
Internal Thread length
KH-EZ I
KH-EZ Ø
Socket Size
Internal thread Ø
Head Ø
Socket Size
Head Ø
Internal thread Ø
Internal thread length
1 / 4 ’’ 3 / 8 ’’ 0.59 ’’ 1 / 4 ’’ 0.37 ’’ 1 / 4 ’’ 1 / 2 ’’ 0.65 ’’ 3 / 8 ’’ 0.45 ’’ 3 / 8 ’’ 11 / 16 ’’ 0.81 ’’ 1 / 2 ’’ 0.46 ’’
External thread Ø
KH-EZ E
KH-EZ Ø
Socket Size
External thread length
Socket Size Head Ø
Min Socket Height
Head Ø
Internal thread Ø
Internal thread length
Total Head height
1 / 4 ’’ 1 / 2 ’’ 1-1 / 2 ’’ 0.65 ’’ 3 / 8 ’’ 1.08 ’’ 1.32 ”
ORDERING INFORMATION 1
Description
Internal thread diameter
Internal thread length
Drill bit diameter
Minimum embedment
Qty / box KWIK HUS-EZ 1 / 4x1-5 / 8 | 1 / 4 1 / 4 3 / 8 1 / 4 1-5 / 8 100 KWIK HUS-EZ 1 / 4x2-1 / 2 | 1 / 4 1 / 4 3 / 8 1 / 4 2-1 / 2 100 KWIK HUS-EZ 1 / 4x1-5 / 8 | 3 / 8 3 / 8 7 / 16 1 / 4 1-5 / 8 100 KWIK HUS-EZ 1 / 4x2-1 / 2 | 3 / 8 3 / 8 7 / 16 1 / 4 2-1 / 2 100 KWIK HUS-EZ 3 / 8x2-1 / 8 | 1 / 2 1 / 2 1 / 2 3 / 8 2-1 / 8 100 KWIK HUS-EZ 1 / 4x1-5 / 8 E 3 / 8 3 / 8 1 1 / 4 1-5 / 8 100
1 All dimensions in inches .
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.8 KWIK HUS-EZ I AND KWIK HUS-EZ E CARBON STEEL SCREW ANCHOR 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
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