3.5.1.3.3 Powder-actuated cartridge and power regulation selection
When installing powder-actuated deck fasteners , it is important for the installed fasteners to have a nailhead stand-off , h NVS
, within the specified range . The Hilti Power Adjustment Guide , shown in Figure 13 , is a valuable quality assurance aid to the decking foreman . It is primarily intended for power adjustment of the powder-actuated tool . This is done by installing test fastenings into representative base steel and then checking the nailhead stand-off , h NVS
, at the beginning of the work to achieve the optimal cartridge and tool power level . This is a critical step in the work because of variations in the structural steel strengths ( F y
, F u
) and member thicknesses . By investing time up front and properly correlating the fastening system to actual site materials , most fastening issues can be avoided . During installation , it is also advisable to check the work periodically to spot deficiencies before large portions of the deck might be fastened incorrectly . Failure to properly set the tool , fastener and cartridge prior to starting work can decrease fastening quality consistency .
Prior to starting work , the installer shall install a test fastening and check the h NVS using the Hilti Power Adjustment Guide . If necessary , the installer shall adjust the power or force that drives the fastener into the base steel . There are two ways to accomplish this power adjustment . One is by use of different cartridge colors and the other is by adjusting the power regulator on the tool itself .
Cartridge colors available for Hilti decking tools are ( in order of increasing power ): yellow , blue , red and black . All Hilti decking tools come equipped with a power adjustment capability . The settings on the power regulation dials range from 1 to 4 .
Figures 14 and 15 provide the installer with a recommended cartridge color and power setting for Hilti bar joist and structural steel deck fasteners , respectively . These charts are guidelines that the installer can use to start the process of test fastenings discussed above . This also helps ensure the installer will have the proper color cartridges on the project site .
Figure 13 : Hilti Power Adjustment Guide
Figure 14 : Cartridge and power regulation guidelines for bar joist deck fasteners installed with a DX 9-HSN 1
Figure 15 : Cartridge and power regulation guidelines for structural steel deck fasteners 1
1 Cartridge recommendations for the X-ENP-19 fastener are acceptable for all current Hilti Decking Tools for attachment to structural steel . Cartridge recommendations for the X-HSN 24 fasteners are for the DX 9-HSN . Cartridge recommendations for the DX 5-SM can be found in the tool operator manual . Recommendations are guidelines only and require verification on each site .
3.5.1.4 SUBMITTAL INFORMATION FOR ROOF DECK
To download and submit Decking Submittal Forms and , please visit https :// www . hilti . com / content / hilti / W1 / US / en / engineering / design-centers / decking / decking-submittals . html
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