Anchor Fastening Technical Guide , Edition 22
DESIGN INFORMATION IN HOLLOW CORE CONCRETE PER ALLOWABLE STRESS DESIGN
Table 34 — Hilti KH-EZ , KH-EZ P , KH-EZ PM , KH-EZ PL , KH-EZ C and KH-EZ CRC allowable stress design values for installations into hollow core concrete panels 1 , 2
Anchor diameter ( inches )
1 / 4
3 / 8
Min . effective embedment
h ef ( inches )
Allowable load 3
Ultimate load
Tension Shear Tension Shear 1-1 / 8 400 610 1600 2440 1-3 / 8 455 755 1810 3025 1-1 / 8 435 890 1740 3560 1-3 / 8 590 ( 2.6 ) 1405 ( 6.3 ) 2360 ( 10.5 ) 5620 ( 25.0 )
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 .
Figure 8 — Installation of Hilti KH-EZ , KH-EZ P , KH-EZ PM , KH-EZ PL , KH-EZ C and KH-EZ CRC in hollow core concrete
3.3.6
KH-EZ ( CRC ) |
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KH-EZ Ø |
Socket Size |
Washer Ø |
Total head height |
Hex head height |
Socket Size |
|
1 / 4 ’’ 7 / 16 ’’ 0.65 ’’ 0.24 ’’ 0.16 ’’
3 / 8 ’’ 9 / 16 ’’ 0.78 ’’ 0.35 ’’ 0.26 ’’
|
Hex head height |
Total head height |
1 / 2 ’’ 3 / 4 ’’ 1.03 ’’ 0.49 ’’ 0.35 ’’ |
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5 / 8 ’’ 15 / 16 ’’ 1.28 ’’ 0.57 ’’ 0.43 ’’
3 / 4 ’’ 1-1 / 8 ’’ 1.48 ’’ 0.70 ’’ 0.53 ’’
|
Washer Ø |
1 KH-EZ CRC does not come in ¼ “ diameter . Ø = diameter |
KH-EZ C |
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Angle |
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KH-EZ Ø
Torx Size
Head Ø
Head height
Flat height
Angle
1 / 4 ’’ TX30 0.47 ” 0.16 ” 0.04 ” 82 °
|
Head height |
Head Ø |
Head height |
3 / 8 ’’ TX50 0.74 ” 0.28 ” 0.09 ” 82 ° |
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Ø = diameter |
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KH-EZ P / PM / PL |
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Pan Size
Torx Size
Head Ø
Head height
P TX30 0.52 ’’ 0.13 ’’
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Head height |
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PM TX30 0.69 ’’ 0.13 ’’ |
|
Head Ø |
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PL TX30 0.86 ’’ 0.18 ’’ |
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Ø = diameter |
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Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.6 KWIK HUS-EZ 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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