10 VR4 VERCO DECKING, INC. www.vercodeck.com

ATTACHMENT OF ROOF DECK

Support Fastening The diaphragm shear tables of this catalog include two methods of attaching deck to the supports: welds and mechanical fasteners (power actuated fasteners or self-drilling, self-tapping screws).

Welds: When Verco roof deck is to be welded to supports, the effective fusion area is to be at least ½ in. diameter for arc spot (puddle) welds (Figure 3) or at least 3-i in. x 1 in. long for arc seam welds. Arc seam and arc spot welds are to be located and spaced as described in the tables.

Hilti Fasteners: Hilti X-EDNK22 THQ12, X-HSN 24, or X-ENP-19 L15 fasteners are to be installed as shown in Figure 4. Hilti X-HSN 24 fasteners have a dome style head, red guidance washer and a steel silver-colored top-hat washer. Hilti X-EDNK22 fasteners have a dome style head, a 15-ew inch diameter steel flat washer, and a steel top hat washer. The Hilti X-ENP-19 fastener has a fully knurled tip and tapered shank fitted with two 0.590 inch diameter steel cupped washers. Contact Hilti for additional informa-tion on the fasteners.

Proper penetration of the Hilti fasteners into structural supports is shown in Figure 4. Fasteners shall be located not less than 1 in. from the end of the sheets.

Select the appropriate fastener based on the actual substrate thickness.

Pneutek Fasteners: Pneutek K66062, K66075, K64062, K64075, SDK63075, or SDK61075 fasteners are to be installed as shown in Figure 5. The Pneutek fasteners have ½ inch diameter heads. Contact Pneutek for additional information on the fasteners.

Fasteners must be driven with the Pneutek Air/Safe fastening system to ensure tight contact between the fastener head and the attached deck as shown in Figure 5. Fasteners shall be located not less than 1 in. from the end of the sheets.

FIGURE 3

Arc Seam Weld

Arc Spot Weld

X-EDNK22 THQ12 or X-HSN 24

Hilti X-ENP-19 L15 Fastener

FIGURE 4

Verco Deck

3/qy" – 3/i"(5 – 9 mm)

Structural Steel Supports

X-ENP-19 L15

5/qy" – 3/i"(8.2 – 9.8 mm)

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Select the appropriate fastener based on the actual substrate thickness. Note that K66075 or K64075 pins are to be used for attachment of four layers of 20 gage deck or three or four layers of 18 or 16 gage deck.

Screws: #12 self-drilling, self-tapping screws are to be installed as shown in Figure 6.

Diaphragm shear and flexibility values are based on SDI recog-nized #12 screws from Buildex, Elco, Hilti, and Simpson Strong-Tie when installed in supports at least 0.0385 inches thick. The tabulated shears and flexibility values may be modified in accor-dance with appropriate footnotes of the Diaphragm Shear Strength and Flexibility Tables for supports of different thick-nesses or for screws (“generic”) which are not recognized by SDI.

ShearTranz® II-42 System: Verco introduced the use of restraining elements, such as the ShearTranz II-42 System, to increase roof deck diaphragm rigidity.

The 14 gage ShearTranz II-42 elements are used with PLB-36 deck with sidelaps connected using the PunchLok II Tool.

The ShearTranz II-42 elements are used at shear collecting support ele-ments perpendicular to the deck corrugations. When ShearTranz II-42 elements are used, the deck does not need to terminate at the support as it may be cantilevered.

Deck end laps of PLB-36 with the ShearTranz II-42 System must be at least 2 inches and fastened to supports with arc spot and arc seam welds. ShearTranz II elements are required if butted end joints are used. See installation details shown on page 66.

K66062 orK66075

Structural Steel Supports

FIGURE 5

SDK63075 orSDK61075

K64062 or K64075

Verco Deck(typical) Structural Steel

Support

Pneutek Fastener

FIGURE 6

#12 Screw

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