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Innovation . . .is the key to Verco’s success sinceits founding in 1964. Vercoengineers have developed manyoriginal products like the shearrestraining ShearTranz system.Now contractors and owners arereducing construction costs withanother proven product - theinnovative PunchLok System.7KH ÀHOG WHVWHG 3XQFK/RN V\VWHP UHGXFHV FRQVWUXFWLRQ FRVWV LJKHU VKHDU YDOXHV WKURXJK KLJK TXDOLW\ VLGHODS FRQQHFWLRQV 5HGXFHG LQVWDOODWLRQ WLPH DV ZHOO DV ODERU DQG LQVSHFWLRQ FRVWV (OLPLQDWLRQ RI À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

PROPERTIES AND VERTICAL LOADS . . . . . . . . 28For PLB -36, HSB -36, PLN -24, and N-24 decksFastened to Supports with Pneutek Fasteners, Hilti Fasteners, or ScrewsSidelaps Fastened with PunchLok ToolSidelaps Fastened with PunchLok ToolSidelaps Fastened with BP, Screw, or TSWSidelaps Fastened with PunchLok Tool, BP, Screw, or TSWFastened to Supports with Pneutek Fasteners, Hilti Fasteners, or ScrewsSidelaps Fastened with PunchLok ToolPLN -24 or N-24 DECK–WELDS . . . . . . . . . . . . 90Sidelaps Fastened with PunchLok Tool, BP, Screw, or TSWPLN PLN or NWELDSPIN/SCREWPLN -24 DECK–MECHANICAL FASTENERS . . 69SHEARTRANZ SHEARTRANZ SYSTEMS . . . . . . . . . . . . . . . . . . 60HSB WELDSHSB -36 DECK–WELDS. . . . . . . . . . . . . . . . . . . . 54PLB WELDSPLB -36 DECK–WELDS . . . . . . . . . . . . . . . . . . . 48PLB PIN/SCREWPLB -36 DECK–MECHANICAL FASTENERS . . 32VERTICALLOADSVERCOR DECK . . . . . . . . . . . . . . . . . . . . . . . . . 94VERCOR CELLULAR ROOF DECK . . . . . . . . . . . . . . . . . . 112CELLULARCATALOG CONTENTSFor PLB -36, HSB -36, PLN -24, and N-24 decksTECHGUIDETECHNICAL GUIDELINES . . . . . . . . . . . . . . . . . . . 3PROFILESPROFILES AND PROPERTIES. . . . . . . . . . . . . . . . 2www.vercodeck.comVERCO DECKING, INC.Catalog VR3

PLB -36HSB -36Dimensioned Profile3½"1½"53-i"Gage25-i"WeightId for DeflectionMomentGalv PaintedSingleSpanMultiple SeffSpans(psf)(psf)(in.4/ft)(in.4/ft)(in.3/ft) (in.3/ft)221.91.80.1800.1920.185 0.194202.32.20.2230.2310.233 0.244182.92.80.3050.3060.318 0.331163.53.40.3810.3810.404 0.410222.22.10.7480.8600.359 0.438202.62.50.9261.0320.464 0.542183.53.41.2931.3690.663 0.736164.24.11.6671.7060.850 0.914261.10.0750.0750.099 0.103241.40.0970.0970.137 0.138221.70.1200.1200.172 0.171202.10.1430.1430.204 0.204261.00.0130.0130.041 0.043241.30.0180.0180.059 0.059221.60.0220.0220.073 0.073–Seff6"2½"1¾"36"PLN -24N-24DEEPVERCOR SHALLOWVERCOR 7-i"21-i"3"7-i"36"1. Section properties have been computed in accordance with AISI’s “S100: North AmericanSpecification for the Design of Cold-Formed Steel Structural Members.” The section properties are based on the following steel strengths:ProfileSpecified MinimumYield Strength (Fy )Fy Used for DeterminingNominal StrengthPLB -36, HSB -36, PLN -24, N-2440 ksi40 ksiDeep VERCOR , Shallow VERCOR 80 ksi60 ksi2. Section properties and values shown apply to all available widths.3. Material thickness is subject to AISI tolerances. See Verco’s evaluation report for decimalthickness of material.4. Weights shown are approximations for design purposes.5. All dimensions are nominal and are subject to manufacturing tolerances.6. Nominal flexural strength, Mn Fy Seff ( or –).ASD allowable moment, M Mn / Ωb, where Ωb 1.67.7. Refer to Verco’s evaluation report for section property adjustment factors for acousticaland fully perforated decks.2 VR3VERCO DECKING, INC.www.vercodeck.com

TECHNICAL GUIDELINES CONTENTSUniform Load Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Factory Mutual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Suspended Loads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Concentrated Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Design Formulas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Cantilevered Deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Wind Uplift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Roof Deck Diaphragms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Diaphragm Load Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7FORMLOK Deck Diaphragms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Axial Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Attachment of Roof Deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Support Fastening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Pneutek Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Hilti Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9ShearTranz Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Sidelap Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11PunchLok System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Top Seam Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Button Punches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Parallel Collectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Arc Spot Welds. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Fillet Welds. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Pneutek Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Hilti Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Verco Roof Deck Finishes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13Primer Painted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Galvanized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Galvanized with Primer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Exposed Product Appearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Roof Deck Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14Spans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Roofing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Fire-Rated Verco Roof Deck. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Venting Verco Roof Deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Acoustical Roof Deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Roof Deck Design Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16Design Goals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Span Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Diaphragm Attachment Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Finish Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Specification Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Architectural Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Fire Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Roof Deck Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Roof Deck Fire Resistance Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Steel Roof Deck Specification 05 31 23. . . . . . . . . . . . . . . . . . . . . . . . . .22Using the Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27Metric (SI) Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115VERCO DECKING, INC.VR3 3TECHGUIDEwww.vercodeck.comProfile Designations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Roof Deck Vertical Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

VERCO ROOF DECK TECHNICAL GUIDELINESTECHGUIDEVerco Decking, Inc. is noted for its innovative development of steel roofdecks including the use of shear restraining elements (the ShearTranz systems) and mechanical sidelap connections (the PunchLok system).In this catalog, Verco features a complete range of systems utilizing therevolutionary PunchLok system for sidelap connections: 1½" deepPLB -36 and 3" deep PLN -24 decks with welds and mechanical fasteners (power actuated fasteners and screws) to the supports, andPLB-36 deck with ShearTranz II-42. With the PunchLok system, Vercocontinues its industry leading history of improvement and innovation toserve the construction community.The information in this section is applicable primarily to PLB-36,HSB-36, PLN-24, and N-24 decks. Refer to page 94 for technical guidelines for Deep and Shallow VERCOR decks.Profile DesignationsDeck for PunchLok Systems: PLB-36 PLN-24Deck for Button Punch and Top Seam Weld Sidelaps: HSB-36 N-24Deck for Screwed Sidelaps: HSB-36-SS N-24-SSROOF DECK VERTICAL LOADSUniform Load TablesThe tables on pages 29 and 31 list allowable uniform loads. These arethe total uniform loads which can be applied to the roof deck. Values arebased on the allowable bending moment (stress) and limiting deflectionto L/240. The symbol indicates that the allowable uniform loadbased on deflection exceeds the allowable load based on flexure (stress).Note that self-weight of the deck should be included when determiningdead load.The formulas used to determine the allowable uniform loads due to flexure (stress) and deflection are shown on page 6.Verco recommends 2 inches minimum bearing on perpendicular supports. The required bearing should be verified based on specific loadand span conditions. Adequate bearing at perpendicular supports isrequired to prevent web crippling of the deck and to allow for properattachment. Sufficient bearing at parallel supports should be providedto make the specified connections.BearingThe allowable reactions for one flange loading are shown in Table 1 andthe section properties tables. Web crippling due to concentrated loads,such as curbs, located directly over supports (two flange loading) shouldalso be evaluated. Table 2 shows allowable concentrated loads over sup4 VR3VERCO DECKING, INC.www.vercodeck.com

ports. Refer to the Commentary of AISI S100 for diagrams and examples showing the various loading conditions.Table 1: Allowable Reactions per ft of Width for One Flange Loading (lb)DeckProfilePLB-36or HSB-36PLN-24or N-24End BearingGage2''Interior 2,645161,8932,1452,3573,7193,974Table 2: Allowable Reactions per ft of Width for Two Flange Loading (lb)DeckProfilePLB-36or HSB-36PLN-24or N-24Factory MutualEnd BearingInterior 563,0163,251162,2212,4442,6324,6054,948All Verco 1½'' and 3'' roof decks are Factory Mutual approved as:STEEL ROOF DECKS, Class I fire and I-60 or I-90 Windstorm Rated(minimum). See Table 3 for Factory Mutual approved spans for fluteddecks and Table 18 on page 113 for approved spans for cellular decks.All approved spans are measured center-to-center of support members.Refer to Factory Mutual’s RoofNav for additional information.Table 3: FM Approved Spans (c-c) for 1½'' and 3'' Fluted Roof DecksDeckProfilePLB-36or HSB-36PLN-24or N-24www.vercodeck.comDeck GageDeck -8''Acoustic12'-6''13'-6''15'-6''17'-2''VERCO DECKING, INC.VR3 5TECHGUIDESee Verco’s evaluation report for allowable reaction adjustment factorsfor acoustical decks.

TECHGUIDESuspended LoadsThe engineer of record should evaluate suspended or hanging loadsattached directly to the roof deck on the basis of the project conditions.The specific method of attachment will determine the load distributionor effective width of deck to be used in the evaluation.Concentrated LoadsConcentrated loads, such as those due to construction or maintenanceworkers, should be evaluated based on the deck section properties,material strengths, and web crippling capacities.Design Formulas M Positive Bending Moment in ft-lb–M Negative Bending Moment in ft-lb Deflection in inchesE 29,500,000 psiw Allowable uniform live load in psfL Span length in feet. Span lengths shown in tables are centerto-center spans.R e End reaction in lb/ftR i Interior reaction in lb/ftSpanCantilevered DeckBending MomentSingle M 0.125 w LDouble– M 0.125 w LTriple– M 0.1 w L222Deflection40.013 w L 1728 -----E I40.0054 w L 1728E I -----40.0069 w L 1728E I -----BearingR e 0.5 w LR e 0.375 w LR i 1.25 w LR e 0.4 w LR i 1.1 w LThe length of Verco roof deck cantilevers can be determined by evaluating section properties and material strengths. Consider construction ormaintenance workers and materials attached to the deck, particularlywith regard to deflection. Attach cantilevers to supports prior to loading. See Figure 1.Verco Roof DeckAllowable roof deck cantilevers can bedetermined based on section propertiesand material strengths using stressand/or deflection as limits.FIGURE 1Wind Uplift6 VR3Determine allowable spans to resist uplift forces based on the deck section properties and material strengths. Evaluation may be warrantedon specific projects.VERCO DECKING, INC.www.vercodeck.com

Tension strength of arc spot welds and #12 screw connections should bedetermined in accordance with AISI S100. Contact the fastener manufacturer for the tension strength of the individual screw.ROOF DECK DIAPHRAGMSThe allowable diaphragm shear values and flexibility factors in thetables for Verco roof decks are based on attachment of the deck to theperpendicular supports with puddle welds or mechanical fasteners. Theattachment patterns for each profile are shown in the illustrationsincluded with the tables.Diaphragm Load TablesDesigners should observe the following notes when working with thesetables: The allowable stress increase permitted for load combinations inIBC Section 1605.3.2, including wind or seismic forces, shall not beused for allowable diaphragm shears.The flexibility factor (F) is the number of microinches a diaphragmweb will deflect in a span of 1 ft under a shear load of 1 pound per ft.Refer to Verco’s evaluation report for guidance in calculating anticipated deflections using the flexibility factor, F.R is the vertical load span (spacing between supports) (L v) of thedeck divided by the length (L s) of the deck sheet: R L v / L s.The flexibility limitations in Verco’s evaluation report may be usedas a guide in lieu of a rational analysis of the anticipated deflections.VSC Verco Sidelap Connection made with the Verco PunchLoktool on PLB-36 or PLN-24 deck.BP Button punched sidelap connection.SS Screwed sidelap connection with minimum #10 x ¾ in. screw.TSW 1½ in. long top seam weld sidelap connection.See “Sidelap Connections” on page 11 for information regarding connection spacing.Interpolation of diaphragm shear between adjacent spans or sidelapspacings is permissible. For interpolated span lengths, use the diaphragm flexibility of the closest span length.The ends of PLB-36, HSB-36, PLN-24, and N-24 deck are to belapped a minimum of 2 inches.FORMLOK DeckDiaphragmsRefer to Verco’s evaluation report or Verco’s Floor Deck Catalog for diaphragm values for PLW2-36, W2-36, PLW3-36, and W3-36 FORMLOKdeck without concrete fill.Axial LoadsAxial load strength of steel deck can be evaluated in accordance withAISI’s “S100: North American Specification for the Design of ColdFormed Steel Structural Members.”www.vercodeck.comVERCO DECKING, INC.VR3 7TECHGUIDEAllowable tension strengths of Pneutek and Hilti fasteners are based onthe specific combination of fastener, substrate thickness, and deck gage.Allowable tension strengths are shown in Verco’s evaluation report.

ATTACHMENT OF ROOF DECKTECHGUIDESupport FasteningThe diaphragm shear tables of this catalog include two methods ofattaching deck to the supports: welds and mechanical fasteners (poweractuated fasteners or self-drilling, self-tapping screws).PLB-36, HSB-36, PLN-24, and N-24 decks are attached to thesupports with welds. ORPLB-36 and PLN-24 decks are attached to supports with eitherPneutek or Hilti power actuated fasteners. Fastener selection isbased on substrate thickness. Allowable diaphragm shear valuesare determined by the fastener and substrate thickness. ORPLB-36 is attached to minimum 33 mil (20 gage, or 0.0346 in.)supporting steel with minimum Fy 33 ksi (Fu 45 ksi), using#12 self-drilling, self-tapping screws. Allowable diaphragm shearvalues are determined by the substrate thickness and materialstrength. ORPLN-24 is attached to minimum 1-i in. thick supporting steel using#12 self-drilling, self-tapping screws. Arc SpotWeldFIGURE 2Welds: When Verco roof deck is to be welded to supports, theeffective fusion area is to be at least ½ in. diameter for arc spot(puddle) welds (Figure 2) or at least 3-i in. x 1 in. long for arcseam welds. Welds are to be spaced as described in the tables.Weld washers are not required or recommended for arc spotwelds in PLB-36, HSB-36, PLN-24, and N-24 roof decks.Pneutek Fasteners: When PLB-36 deck is attached to structural supports with Pneutek K66062, K66075, K64062, SDK63075, or SDK61075fasteners, they are to be installed as shown in Figure 3. The Pneutekfasteners have ½ inch diameter heads. Contact Pneutek for additionalinformation on the fasteners.Fasteners must be driven with the Pneutek Air/Safe fastening system to ensure tight contact between the fastener head and the attacheddeck as shown in Figure 3. 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,as shown in the diaphragm shear tables on pages 32-37 for PLB-36 deckand pages 69-80 for PLN-24 deck. Note that K66075 pins are to be usedfor attachment of four layers of 20 gage deck or three or four layers of 18or 16 gage deck.K66062 orK66075K64062SDK63075 orSDK61075PneutekFastenerVerco Deck(typical)Structural SteelSupports8 VR3VERCO DECKING, INC.Structural SteelSupportFIGURE 3www.vercodeck.com

Proper penetration of the Hilti fasteners into structural supports isshown in Figure 4. Fasteners shall be located not less than 1 in. fromthe end of the sheets.Select the appropriate fastener based on the actual substrate thickness,as shown in the diaphragm shear tables on pages 38-43 for PLB-36 deckand pages 81-86 for PLN-24 deck.X-ENP-19 L15X-EDN19 THQ12 orX-EDNK22 THQ123/qy" – 3/i"(5 – 9 mm)5/qy" – 3/i"(8.2 – 9.8 mm)Verco DeckStructural SteelSupportsHilti X-EDN19THQ12 FastenerFIGURE 4#12ScrewScrews: When PLB-36 or PLN-24 decks are attached to supports with #12 self-drilling, self-tapping screws, they are to beinstalled as shown in Figure 5. See Table 4 for suggested screwselection based on actual substrate thickness.Diaphragm shear and flexibility values for PLB-36 deck given inthe corresponding tables assume 54 mil (16 gage, or 0.0566 in.)cold-formed steel supports with Fy 33 ksi (Fu 45 ksi). TheseFIGURE 5shear and flexibility values may be modified for supports withdifferent thickness and/or material strength using the adjustment factors shown in Table 5.Diaphragm shear and flexibility values for PLN-24 deck are shown onpages 87-89 and assume minimum 1-i in. thick steel supports. ContactVerco’s engineering department if using supports thinner than 1-i in.Table 4: Suggested Screw Selectionwww.vercodeck.comSubstrate ThicknessFastener Designation33 mil (0.0346'') to 3/16''#3 Drill Point1/8'' to 1/4''#4 Drill Point1/4'' to 1/2''#5 Drill PointVERCO DECKING, INC.VR3 9TECHGUIDEHilti Fasteners: When PLB-36 or PLN-24 decks are fastened to thestructural supports with Hilti X-EDN19 THQ12, X-EDNK22 THQ12, orX-ENP-19 L15 fasteners, they are to be installed as shown in Figure 4.Hilti X-EDN19 and X-EDNK22 fasteners have a dome style head, a15-ew inch diameter steel flat washer, and a steel top hat washer. TheHilti X-ENP-19 fastener has a fully knurled tip and tapered shank fitted with two 0.590 inch diameter steel cupped washers. Contact Hiltifor additional information on the fasteners.

Table 5: Diaphragm Shear and Flexibility Adjustment Factors, Rq and RF, forPLB-36 Deck Attached to Supports with #12 ScrewsTECHGUIDEGageSubstrate Thickness and Strength (Fy / Fu), ksi22201816 54 mil (0.0566 in.)33 mil (0.0346 in.)43 mil (0.0451 in.)33 / 4550 / 6533 / 4550 / 6533 / 4550 / 191.001.00Multiply tabulated shear, q, and flexibility, F, values by the adjustment factors as follows: Adjusted allowable diaphragm shear q Rq Adjusted flexibility factor F RFShearTranz Systems: Verco introduced the use of restraining elements to increase roof deck diaphragm strength and rigidity with theShearTranz system. The ShearTranz family of products now includesthe following:14 gage ShearTranz II-42 elements are used with PLB-36 deck withsidelaps connected using the PunchLok system. 16 gage ShearTranz II elements are used with HSB-36 deck withsidelaps connected using button punches or top seam welds. 16 gage original ShearTranz system is used with HSB-36 deck withsidelaps connected using button punches or top seam welds. Theoriginal ShearTranz elements are also used in System 80 in conjunction with HSB-36 deck and insulating fill.The ShearTranz elements are used at shear collecting support elementsperpendicular to the deck corrugations. When ShearTranz II-42 orShearTranz II elements are used, the deck does not need to terminateat the support as it may be cantilevered. End laps at supports must be at least 2 inches and fastened to supportswith arc spot puddle welds. ShearTranz system installation details areshown on pages 66 and 67. See page 68 for System 80 details.10 VR3VERCO DECKING, INC.www.vercodeck.com

Verco roof decks are to be fastened at the sidelaps by one of four methods: VSC’s made with the PunchLok tool, 1½ in. long top seam welds,button punches, or #10 x ¾ in. long screws. Spacing of sidelap connections shall be as specified in the tables.Sidelap ConnectionsTECHGUIDESidelap Connection(typical)Spacing ----------------------2SpacingSpacingSpacing ----------------------2SpacingSpanFIGURE 6The dimension from the centerline of the supports to the first and lastsidelap connection within each span is to be no more than one half thespecified spacing as shown in Figure 6. The number of connections perspan based on spacing are noted in Table 6.Table 6: Number of Sidelap Connections per Span Based on SpacingSpan 232412'-0" 13'-0" 14'-0" 15'-0" 0333639424548VercoSidelapConnection(VSC)FIGURE 7PunchLok System: Connect sidelaps of the PLB-36 andPLN-24 roof decks with the Verco PunchLok tool. The PunchLoktool creates a positive connection between the male and femalelips of the PLB-36 or PLN-24 roof deck. The connection made bythe PunchLok tool is referred to as a VSC (Verco Sidelap Connection). An acceptable VSC connection has been made when thesidelap material has been sheared and offset so the shearedsurface of the male leg is visible (Figure 7).The VSC connection may be made in either direction relative tothe sidelap.Top Seam Welds: When sidelaps of the HSB-36 and N-24 roof deck areconnected with top seam welds (TSW) (Figure 8, left), the 1½ in. longweld must engage the top of the inner (male) leg. Clinch the joint beforewelding to create contact between the lips.www.vercodeck.comVERCO DECKING, INC.VR3 11

TopSeamWeldTECHGUIDEButtonPunchFIGURE 8Button Punches: When sidelaps of the HSB-36 and N-24 roof deck areconnected with button punches (Figure 8, right), an average-sized person should be able to stand (not jump) on the flute adjacent to theattachment without the joint coming apart.ScrewFIGURE 9Parallel CollectorsScrews: When self-drilling, self-tapping screws are used toconnect the sidelaps of HSB-36-SS and N-24-SS roof decks(Figure 9), they are to be minimum #10 x ¾ in. long. The diaphragm shear values and flexibility factors for deck fastenedwith screws are the same as those shown for button punchedsidelaps. The screws are to be placed at the same spacing as thebutton punch spacing. The “SS” designation indicates deck provided with extended female lip for screw fastening.Spacing of the attachments at collectors parallel to the deck ribs isbased on the type of attachment being used. The maximum spacing ofattachments at parallel collectors is 3 ft.Arc Spot Welds: Spacing of arc spot welds at collectors parallel to thedeck ribs should be based on the shear to be transferred. Table 7 listsallowable shear, in pounds, for ½ in. effective diameter welds.Table 7: Allowable Shear per WeldDeck Gagelb221,047201,257181,673162,093Fillet Welds: Spacing of fillet welds used at collectors parallel to thedeck flutes should be based on the shear to be transferred. Allowableshear for fillet welds is determined in accordance with AISI S100.Pneutek Fasteners: Spacing of Pneutek fasteners at collectors parallelto the deck flutes is to be the same as the spacing of the sidelap connections. If the required shear transfer between the deck and an interiorcollector element parallel to the deck flutes exceeds the shear strengthof the diaphragm, provide two Pneutek fasteners at the same spacing asthe sidelap connections.12 VR3VERCO DECKING, INC.www.vercodeck.com

Screws: The spacing of #12 self-drilling, self-tapping screws at collectors parallel to the deck flutes should be based on the shear to be transferred. Allowable strength of screw connections in various thicknessesand material strengths of supporting steel are provided in Table 8. Contact the fastener manufacturer to verify the shear strength of the individual fastener meets or exceeds the strength of the connection, asrequired in AISI S100.Table 8: Allowable Shear per #12 Screw Connection (lb)Substrate Thickness and Strength (Fy / Fu), ksi 54 mil (0.0566 in.)33 mil (0.0346 in.)43 mil (0.0451 in.)33 / 4550 / 6533 / 4550 / 6533 / 4550 / 65222002772943203203202018827229838438438418188

Cantilevered Deck The length of Verco roof deck cantilevers can be determined by evaluat-ing section properties and material strengths. Consider construction or maintenance workers and materials attached to the deck, particularly with regard to deflection. Attach cantilevers to supports prior to load-ing. See Figure 1.File Size: 2MBPage Count: 120