Steel Deck Fastening Systems
1.1 Steel Deck Fastener Design and Selection
h NVS well above optimal range *
Top Hat not collapsed , not snug against steel deck and not clamping deck sheet to base steel
Figure 11a : Under Driven X-HSN 24 Fastener with Single Sheet to Base Steel h NVS within optimal range *
Top Hat properly collapsed , snug against steel deck and clamping deck sheet to base steel
Figure 11b : Properly Driven X-HSN 24 Fastener with Single Sheet to Base Steel h NVS well below optimal range *
Washer cutting into deck sheet , deforming base steel and deck sheet
Figure 11c : Over Driven X-HSN 24 Fastener with Single Sheet to Base Steel
* Optimal stand-off ( h NVS ) range for the X-HSN 24 fastener is 5 mm ≤ h NVS
≤ 9 mm .
8 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 PTG Decking Supplement 2014