Roofing Fasteners

To view this page ensure that Adobe Flash Player version 9.0.124 or greater is installed.

Please login or register to make a comment!

...Description...... more. less.

roughness, and area of the roof. As a wind force strikes a building structure, pressure differentials are created as fast moving air flows over and around a building. These differentials are referred to as suction or uplift and are often greatest at areas such as the roof perimeter, roof corners, wall corners, and ridges. Basic wind speed maps are normally used in conjunction with tables based on the ground roughness factor to determine the amount of uplift in the field of the roof. In some areas, local experience based on terrain or other factors may require the use of higher wind speeds. Additional factors are then applied for fasteners to be installed in the perimeter, ridges, and corners. Wind force striking a building structure To determine wind speed, consult an appropriate wind design map. Basic wind speed is measured at various locations around the country using anemometers usually at an elevation of 30-35 feet above the ground. Data has been collected from records to provide maps which show the fastest winds which have occurred over periods of time. The most commonly used maps are based on intervals of 50 and 100 years. These intervals or frequencies are described as the Mean Recurrence Interval (MRI) and are usually noted on the maps. Gust factors and other increases may need to be applied based on local code requirements. Ground Roughness Exposure Most recordings of wind speed are not influenced by the ground roughness since the anemometers are usually located in relatively open Exposure C or D areas. The wind speed may be reduced significantly depending upon the ground obstructions such as buildings and local terrain. Care should be taken when selecting a ground roughness factor. For example, a building may have obstructions in the area of local prevailing winds, but be open in the leeward area. It is normally considered good design practice to assume that maximum winds can blow from any direction. ASCE 7 establishes four categories for ground roughness or exposure based on the terrain and the location of adjacent structures. Exposure A This exposure is defined as large city centers with at least 50% of the buildings having a height in excess of 70 feet. Use of this exposure category should be limited to those areas for which terrain representative of Exposure A prevails in the upwind direction for a distance of at least one half mile and terrain representative of Exposure B prevails for an additional distance of one mile. Use of Exposure B is recommended unless wind tunnel testing proves otherwise. Exposure B Urban and suburban areas, well wooded areas, or other terrain with numerous closely spaced obstructions having the size of single family dwellings or greater. Use of this category of exposure should be limited to those areas in which terrain representative of Exposure B prevails in any direction for a distance of at least 1500 feet or ten times the height of the building or structure, whichever is greater. If Exposure B prevails in the vicinity of the proposed structure, but the distance to terrain less rough than Exposure B is less than 1500 feet or ten times the height of the structure, whichever is greater, then Exposure C should be used. Exposure C Open terrain with scattered obstructions having heights generally less than 30 feet. This exposure category includes flat, open country and grasslands. Exposure D Flat, unobstructed areas directly exposed to wind blowing over large bodies of water. This exposure category should be used for areas extending inland from the shore to a distance of 1500 feet or ten times the height of the building or structure, whichever is greater. Roofing Fasteners I N TRODUCTIO N No other area of building construction and renovation poses more problems to a building owner, architect, engineer or consultant than roofing. In fact a great majority of liability suits in commercial construction pertain to roof damage. For many years, insulation boards were fastened to the structural roof deck primarily with adhesive. According to FM Global, uneven spreading of adhesives under extreme weather conditions fails to provide assured protection against windstorm losses. Mechanical fasteners have become an approved solution depending upon the particular roofing system employed. In 1983, FM Global stated that the only recommended means of attaching rigid insulation board to roof decks was the use of mechanical fasteners. Factory Mutual Researc h Corporation established categories of windstorm protection such as, I-60 (60 psf uplift), and I-90 (90 psf uplift). Today, the roofing industry commonly specifies mechanical fastening as a solution to the problem of windstorm uplift damage to insulation, coverin gs and perimeter fastenings. In an effort to provide problem solving solutions for both the systems manufacturer and roofer, Power s has designed many fasteners and accessories to reduce costs, installation time, and above all, provide a better means of attach ment. This section of the manual is designed to help you select the best combination of fastener, plate, and carbide-tipped drill, fo r the roofing project you are planning. Each application is unique and this section will help you choose the product which best suits your sp ecific needs. SPECIFICATION&DESIGNMANUAL Roofing Fasteners www.powers.com Canada: (905) 673-7295 or (514) 631-4216 Powers USA: (800) 524-3244 or (914) 235-6300 354 TABLE OF CONTENTS Velocity Pressure After the appropriate ground roughness has been selected based on the type of exposure and the height of the roof, the velocity or uplift pressure can be calculated using formulas or taken from a design table. As an example, the tables published by FM Global are provided here for reference purposes. These values are for the field of the roof. Velocity Pressure for Ground Roughness / Exposure B Velocity Pressure for Ground Roughness / Exposure C Velocity Pressure for Ground Roughness / Exposure D Other factors which may affect the velocity or uplift pressure to be used include the percentage of wall openings, projections or overhangs, air permeability of the roof deck, and the effect of positive pressure within the building. Consult the appropriate code or design guide for details. Perimeter,Ridge and Corner Factors Since the perimeter, ridges, and corners are typically exposed to higher uplift forces than the field of the roof, the design uplift pressure to be used in these areas is increased using factors or coefficients established by the various codes and design guides. The dimensional definition of the perimeter, ridge, and corner areas varies depending upon the code or guide used. As an example, the following coefficients are recommended by SPRI for mechanically fastened single ply roofing systems. Refer to the current SPRI guide for details. Once the uplift pressure for the field of the roof has been determined, the design pressure for the perimeter, ridge, and corner areas is determined by multiplying the field pressure by the appropriate coefficient. For example, if the field pressure is determined to be 40 psf, the design pressure used in the perimeter area would be 80 psf and 120 psf in the corners. Perimeter,Ridge and Corner Factors Base materials used for roof decks are described in detail earlier in this manual. The type of base material is a primary factor in the selection of the proper fastener. Some codes or organizations establish requirements for each type of roof deck. For example, the FMRC deck requirements are as follows: Roof decks should be inspected to verify that they are capable of sustaining the fastener loading requirements. For re-roof or recover applications, job site tests are usually recommended. Typical minimum average fastener pullout values recommended by SPRI for intermediate substrates used with fully adhered single ply systems and mechanically fastened single ply roofing systems are shown in the following table. Refer to the current SPRI guide for details. Tests should be conducted on a minimum of 10 fasteners at various locations in the roof. Contact the roofing manufacturer for recommendations. Attachment of Insulation When mechanical fasteners are used to attach insulation or intermediate substrate to the roof deck, they are normally used in conjunction with a stress distribution plate which will prevent the insulation from pulling over the head of the fastener. Powers provides 3" diameter round diaphragm action stress plates for use in attaching insulation. Spacing requirements for the attachment of insulation board are established by the DESIG N GUIDELI N ES (Continued) Velocity Pressure (psf) Wind Speed (mph) ( ft. ) 708090100110120 0-151011141720 3 301013172125 3 501215192429 3 751418222733 3 1001520253137 3 2001924313846 3 3002228364453 3 4002431394858 3 5002633425263 3 Height Above Ground Velocity Pressure (psf) Wind Speed (mph) ( ft. ) 708090100110120 0-15141823293541 30162127334048 50182430374453 75202633404958 100212835435262 200253241506172 300273544556679 400293747587184 500303950627489 Height Above Ground Velocity Pressure (psf) Wind Speed (mph) ( ft. ) 708090100110120 0-15172329354360 30192532394866 50212734425171 75232937465577 100243139485881 200263443546591 300283746576996 4002938496072101 5003040506275104 Height Above Ground Roof AreaCoefficent Field1 Perimeter and Ridges2 Corners3 SteelMinimum 22 gage ConcreteMinimum 2,500 psi WoodMinimum 3/4" treated plywood or 2" lumber Lightweight ConcreteMinimum 2" thickness over minimum 28 gage corrugated steel Gypsum decksOnly pre-approved by FM Global Cement Wood FiberMinimum 2" thickness AverageFastenerAverageMin. Embed. Deck TypeTypePulloutDepth StructuralPre-drilled screw/nail8001" ConcreteDirect drive nail8001" CementNon-penetrating screw2501 1/2" Wood FiberPenetrating wing toggle450 Through penetration GypsumNon-penetrating screw3001 1/2" ConcretePenetrating wing toggle450 Through penetration Steel 22 GageScrew3753/4" through Steel 24 Gage3253/4" through Steel 26 Gage2253/4" through Wood 3/4"Screw3753/4" through Wood 5/8"Screw3253/4" through Wood 1/2"Screw2753/4" through Catalog No.DescriptionStd.Ctn. 26732K Dynanometer (0-2,000 lbs)1 Roofing Fasteners Powers USA: (800) 524-3244 or (914) 235-6300 Canada: (905) 673-7295 or (514) 631-4216 www.powers.com 355 SPECIFICATION&DESIGNMANUAL TABLE OF CONTENTS manufacturer of the insulation or an approval organization. FM Global provides recommended spacing and fastening patterns based upon specific construction assemblies. Requirements are typically based on an I-60 (60 psf) or I-90 (90 psf) rating. Consult the current FM Global Approval Guide for details. Attachment of Membranes For mechanically attaching roof membranes, fasteners are used in conjunction with a stress distribution plate, disc, bar or strip which as been approved for use with the specific roofing material. Spacing requirements are determined by the membrane manufacturer or an approval organization. FM Global provides recommended spacing and fastening patterns based upon specific construction assemblies. Requirements are typically based on I-60 (60 psf) or I-90 (90 psf) ratings. Consult the current FM Global Approval Guide for details. Perimeter/Termination Attachment The requirements for anchors or fasteners used for the attachment of systems used to terminate a roofing membrane are normally established by the membrane manufacturer. As an example, SPRI recommends a minimum design load of 90 pounds per linear foot. Refer to the current SPRI guide for details. DESIG N GUIDELI N ES (Continued) FIELD TEST GUIDELI N ES Purpose of Test Performance of roofing fasteners is a critical part of any successful roofing system. With the following exceptions, all deck types should be tested to determine the suitability of any fastener. A.Metal deck 3 22 gage or thicker in new construction B.3/4" Plywood in new construction C.2" Thick wood plank in new construction Job site tests are always recommended whenever there may be a concern regarding the suitability of the deck. It is good practice to perform tests on all re-roof applications to verify the integrity of the base material. Decks such as cement wood fiber or gypsum should always be tested. Equipment Test equipment should consist of a hydraulic pulling unit with a gauge that reads in pounds. The gauge used should allow the lead values to fall within the working range of the unit which is generally 10 to 90% of the full scale of the gauge. If the tester has a gauge which reads in pounds per square inch (psi) and the values are converted to pounds, this should be noted on the test report. The conversion chart should be included with the test unit. For testing roofing fasteners, Powers offers a COMTEN hydraulic test unit with a load range of 0 to 2,000 pounds. Equipment Calibration Hydraulic equipment used for testing should be calibrated every 12 months by an independent laboratory. It should also be calibrated if it is suspected that the equipment is out of tolerance. Procedures are based on the document entitles ANSI/SPRI FX-1, Standard Field Test Procedure for Determining the Withdrawal Resistance of Roofing Fasteners. Procedures A.Remove any roofing material in the area directly around the fastener to prevent any influence on the results of the tests. If the existing roof cover is to be left in place, 2 test series should be performed with and without the roof covering in place. The lowest values obtained from either test series should be used for design purposes. B.The fasteners should be installed using procedures and methods which are identical to those to be used during actual construction. The details of the installation including drill diameter, embedment depth into the deck, fastener size, and installation tools should be recorded. C.The fasteners should be installed perpendicular to the roof deck. The load should be applied evenly and slowly to the fastener in a direct line perpendicular to the deck. D.A minimum of 10 tests should be performed for roof decks up to 50,000 square feet. For larger roof decks, an additional 5 tests for each additional 50,000 square feet or portion thereof shall be performed. Tests shall be performed in various areas of the roof including the comers, perimeter, and field to provide a representative sample of overall performance so that at least 50% of the samples are performed in the corner and perimeter areas. Additional testing shall be conducted in any areas of the deck which are damaged or where damage is suspected. E.A plan of the roof shall be included to identify the location of each test. This plan need not be to scale. F.The results of all roofing tests must be summarized on a Powers test form. Personnel A representative of the building owner shall be present to witness the tests performed and verify the load capacities. The suitability of the fastener and the spacing requirements shall be determined by the roof system manufacturer or a design professional in charge. A qualified roof technician shall be present to repair the roof in the areas where the testing has been performed to ensure that it has been returned to a watertight condition. An authorized representative of Powers Fasteners or their authorized distributor who is skilled in the use of test equipment shall perform fastener testing. Cautions A.Tests are indicative of fastener performance at the time of testing and should be conducted as close to job startup time as possible. Data that is greater than 1 year old should not be used and the roof deck should be tested again. B.Prior to commencing job site tests, a survey of the roof and building interior should be conducted to prevent installation of fasteners into sensitive areas such as electrical wiring, etc. C.Roof decks such as gypsum, cement wood fiber, light weight concrete, and insulating concrete can be affected by free water. Tests on these decks should not be conducted when the temperature of the deck is below 32°F or when it is suspected that the deck may be frozen. SPECIFICATION&DESIGNMANUAL Roofing Fasteners www.powers.com Canada: (905) 673-7295 or (514) 631-4216 Powers USA: (800) 524-3244 or (914) 235-6300 356 TABLE OF CONTENTS I N STALLATIO N GUIDELI N ES General A.Fasteners should be driven perpendicular (90°) to the work surface. B.The stress plate and fastener head should recess slightly to avoid abrasion with the roof cover. C.Fasteners that have snapped due to improper driving should be removed. D.Fasteners should be placed at least 6 inches from the edges of insulation board. E.Fastening patterns vary according to systems manufacturer, and size positioning of insulation boards. Consult the systems manufacturer, board, manufacturer, FM Global, or local code office for information. Steel Deck Applications Deck Screws should be driven with the proper power bit and variable speed screw gun with a recommended 2500 rpm's. Deck screws should be sized to penetrate the deck 3/4" minimum. Deck screws should penetrate the top flange of the deck to provide a secure fastening joint. Concrete Deck Applications Spike: Be sure all holes are drilled with carbide drills conforming to ANSI specifications. Improper bit diameters will affect fastener performance. Use of an electropneumatic rotary hammer with SDS-Plus drill bits are recommended. Lightweight Deck Applications (Tectum,Gypsum,Lightweight Insulating Concrete) Powerlite: Job site tests must be performed. When installing into gypsum a 3/8", 7/16" or 1/2" drill bit should be used. Use a 1/4" drill when fastening into insulating concrete. BACKOUT RESISTA N CE Flutter induced by wind loading and dynamic movements caused by roof mounted equipment can cause fasteners to back out of the deck materiaI over time. Fasteners used in the attachment of membrane and insulation have been designed to provide resistance to back out. Steel Deck Applications Deck Screw: Specially designed drill points pierce the smallest possible hole in the steel deck. The points used are varied by the thread design to provide optimum performance. Unique thread configurations are used to bind the screw into the deck by providing the largest possible contact area between the minor diameter of the screw and the deck to provide resistance to unthreading. Concrete Deck Applications Spike: Fasteners which create point loading in concrete can cause the deck to deteriorate. Screws having no expansion mechanism lose their friction grip on the deck and fail. The Spike anchor overcomes these problems with a positive expansion design which provides even distribution of the load at three levels in the anchor hole. When subjected to vibratory loads, the design prevents pulverization of the concrete to provide resistance to back out. Lightweight Deck Applications Powerlite: A specially designed thread having a tapered root design compacts the base material during installation making the deck denser. Compared to a non-tapered fastener, the threads engage 70% more contact area to provide resistance to unthreading. To further resist back out, tabs on the screw head engage ratchet teeth on a barbed plate that grips the insulation or membrane. Roofing Spike ® Powers USA: (800) 524-3244 or (914) 235-6300 Canada: (905) 673-7295 or (514) 631-4216 www.powers.com 357 SPECIFICATION&DESIGNMANUAL TABLE OF CONTENTS M ATERIALSPECIFICATIO N S "Fastening insulation, single-ply membrane, wood and metal to structural concrete decks. GE N ERAL APPLICATIO N S A N D USES Factory Mutual Research Corporation 3 Now known as FM Global (FM Approvals) Structural Concrete Deck 3 J.I. 1K6A7.AM, J.I. 0N9A2.AM, J.I. 1M4A5.AM Fully Adhered Single-Ply and Modified Bitumen Coverings (All Decks) 3 J.I. 1T9A4.AM APPROVALS A N DLISTI N GS PERFOR M A N CEDATA Anchor ComponentComponent Material Anchor BodyGrade 8.2 Carbon Steel CoatingPerma-Seal Fluoropolymer I N STALLATIO N SPECIFICATIO N S Component Material Diameter1/4" ANSI Drill Bit Size, d bit (in.)1/4 Fixture Clearance Hole (in.)5/16 Head Size,O.D.(in.)1/2 Head Height (in.)7/64 Roofing Spike ® Anchor PRODUCT DESCRIPTIO N For roofing applications, the Spike is a one-piece, vibration resistant anchor available for use in fastening insulation, single-ply membrane, wood, and metal to structural concrete roof decks. This version of the Spike has a Perma-Seal TM coating, and is designed for use in conjunction with Powers insulation or membrane plates. SECTION CONTENTS Page No. General Information ................. 357 Material Specifications ............. 357 Installation Specifications ........ 357 Performance Data ...................... 357 Ordering Information ................ 358 Roofing Spike ANCHORMATERIALS Perma-Seal Coated Carbon Steel ANCHOR SIZE RANGE (TYP.) 1/4" x 1" to 1/4" x 14" SUITABLE BASE MATERIALS Normal-Weight Concrete Concrete Masonry Drill a hole into the base material to the depth of at least 1/2" deeper than the embedment required.The tolerances of the drill bit used should meet the requirements of ANSI Standard B212.15.Blow the hole clean of dust and other material. Drive the anchor through the plate into the anchor hole until the head is firmly seated.Be sure the anchor is driven to the required embedment depth. Installation Guidelines 1.The values listed above are ultimate load capacities which should be reduced by a minimum safety factor of 4.0 or greater to determine the allowable working load. 2.Linear interpolation may be used to determine ultimate loads for intermediate compressive strengths. 1/41 1/4 1,1002,5001,5502,7501,7002,100 (6.4)(31.8) (5.0)(11.3)(7.0)(12.4)(7.7)(9.5) Minimum Concrete Compressive Strength (f´ c ) Minimum Embedment Depth h v in. (mm) Anchor Diameter d in. (mm) TensionShearTensionShearTensionShear lbs.lbs.lbs.lbs.lbs.lbs. (kN)(kN)(kN)(kN)(kN)(kN) 3,000 psi (20.7 MPa) 4,000 psi (27.6 MPa) 5,000 psi (34.5 MPa) Ultimate Load Capacities for Roofing Spike in Normal-Weight Concrete 1,2 SPECIFICATION&DESIGNMANUAL Roofing Spike TM www.powers.com Canada: (905) 673-7295 or (514) 631-4216 Powers USA: (800) 524-3244 or (914) 235-6300 358 TABLE OF CONTENTS © 2006 Powers Fasteners,Inc.All Rights Reserved.Perma-Seal is a trademark and Roofing Spike is a registered trademark of Powers Fasteners,Inc. PERFOR M A N CEDATA 1.Allowable load capacities listed are calculated using an applied safety factor of 4.0. 2.Linear interpolation may be used to determine allowable loads for intermediate compressive strengths. 1/41 1/4 275625390690425525 (6.4)(31.8) (1.2)(2.8)(1.8)(3.1)(1.9)(2.4) Minimum Concrete Compressive Strength (f´ c ) Minimum Embedment Depth h v in. (mm) Anchor Diameter d in. (mm) TensionShearTensionShearTensionShear lbs.lbs.lbs.lbs.lbs.lbs. (kN)(kN)(kN)(kN)(kN)(kN) 3,000 psi (20.7 MPa) 4,000 psi (27.6 MPa) 5,000 psi (34.5 MPa) Allowable Load Capacities for Roofing Spike in Normal-Weight Concrete 1,2 1.Tabulated load values are for anchors installed in minimum 6-inch wide,Grade N,Type II,medium and normal-weight concrete maso nry units.Mortar must be minimum Type N.Masonry prism compressive strength must be 1,500 psi minimum at the time of installation. 2.Allowable loads are based on average ultimate values using a safety factor of 5.0. 1/41 1/4 8002,100160420 (6.4)(31.8) (3.6)(9.5)(0.7)(1.9) f´ m e 3,000 psi (20.7 MPa) Minimum Embedment Depth h v in. (mm) Anchor Diameter d in. (mm) TensionShearTensionShear lbs.lbs.lbs.lbs. (kN)(kN)(kN)(kN) Ultimate Load Allowable Load Ultimate and Allowable Load Capacities for Roofing Spike in Hollow Concrete Masonry 1,2 Cat.No.Anchor SizeDrill DiameterMin.Embedment Std.BoxStd.CartonWt./100 38111/4" x 1 1/4"1/4"7/8"5005002 1/2 37231/4" x 1 1/2"1/4"1 1/4"5005002 1/2 37251/4" x 2"1/4"1 1/4"5005003 37271/4" x 2 1/2"1/4"1 1/4"5005004 37291/4" x 3"1/4"1 1/4"5005004 1/2 37311/4" x 3 1/2"1/4"1 1/4"5005005 37331/4" x 4"1/4"1 1/4"5005006 37351/4" x 4 1/2"1/4"1 1/4"5005006 1/2 37371/4" x 5"1/4"1 1/4"5005007 37391/4" x 5 1/2"1/4"1 1/4"5005007 1/2 37411/4" x 6"1/4"1 1/4"2502508 37431/4" x 6 1/2"1/4"1 1/4"2502508 1/2 37451/4" x 7"1/4"1 1/4"2502509 1/2 37471/4" x 7 1/2"1/4"1 1/4"25025010 1/2 37491/4" x 8"1/4"1 1/4"25025011 37531/4" x 9"1/4"1 1/4"25025012 37571/4" x 10"1/4"1 1/4"25025013 37651/4" x 11"1/4"1 1/4"10010014 37691/4" x 12"1/4"1 1/4"10010015 37731/4" x 13"1/4"1 1/4"10010016 37771/4" x 14"1/4"1 1/4"10010017 ORDERI N GI N FOR M ATIO N Roofing Spike Cat.No.Description Guide I.D.Std.BoxWt./Each 3790Spike Driver 10001/2"11/4 3791Spike Driver 20001/2"11/4 Roofing Spike Installation Tools Powerlite TM Powers USA: (800) 524-3244 or (914) 235-6300 Canada: (905) 673-7295 or (514) 631-4216 www.powers.com 359 SPECIFICATION&DESIGNMANUAL M ATERIALSPECIFICATIO N S Factory Mutual Research Corporation 3 Now known as FM Global (FM Approvals) Gypsum and Tectum Decks 3 J.I. 1Q2A2.AM, J.I.1T9A4.AM Recover Construction 3 J.I. 1T9A4.AM All Deck Types Fully Adhered Single-Ply and Modified Bitumen Roof Coverings 3 J.I. 1T9A4.AM Single Ply Roof Covers in Cementitious Wood Fiber Deck 3 J.I. 3X2A7.AM APPROVALS A N DLISTI N GS Anchor ComponentComponent Material Fastener BodyNylon PlateGalvalume Coated Steel I N STALLATIO N SPECIFICATIO N S Head Size,O.D.(in.)1 Head Height (in.)1/8 Insert Size (in.)1/4 Fixture Clearance Hole* (in.)5/8 Powerlite TM Roofing Anchor PRODUCT DESCRIPTIO N The Powerlite is a fastener used to mechanically attach rigid insulation board and single-ply membrane to structural cement wood fiber, gypsum, and lightweight insulating concrete roof decks. The fastener is used in conjunction with insulation and membrane plates. Both types of stress plates are formed from Galvalume, an alloy material which meets Factory Mutual Research Corporation Standard 4470 for corrosion protection. The plates are manufactured with four barbs on the underside that grip the insulation board or single-ply membrane preventing rotation. The Powerlite is designed with a high thread profile along with a tapered root diameter and sharp point. This unique design allows the Powerlite to penetrate the roof deck and progressively compact the base material creating a stronger hold in weak material. Normally, the Powerlite can be installed into cement wood fiber decks such as Tectum ® without pre- drilling. Decks such as Insulrock may require a 5/16" pre-drilled hole. Gypsum and lightweight insulating concrete decks should be pre-drilled using a 3/8" or 7/16" carbide tipped bit. Larger carbide tipped bits up to 1/2"in diameter can be used in denser material. The drill bit size to be used should be determined during the job site test. SECTION CONTENTS Page No. General Information ................. 359 Material Specifications ............. 359 Installation Specifications ........ 359 Performance Data ...................... 360 Ordering Information ................ 360 Powerlite ANCHORMATERIALS Reinforced Engineered Nylon ANCHOR SIZE RANGE (TYP.) 2 dto 14 dLengths SUITABLE BASE MATERIALS Structural Cement Wood Fiber Gypsum Lightweight Concrete If predrilling is required, drill a hole into the base material to a depth 1/2" greater than the embedment required.The tolerances of the drill bit should meet the requirements of ANSI Standard B94.12 Place the Powerlite plate on the insulation (3" round ) or membrane (2" round) Using an impact wrench,drive the Powerlite through the plate into the base material until the head of the fastener is properly seated in the plate.The plate should be seated securely against the insulation or membrane.Do not overdrive. Installation Guidelines * Fixture Clearance holes are needed only when plywood or other rigid materials are fastened to a roof deck TABLE OF CONTENTS SPECIFICATION&DESIGNMANUAL Powerlite TM www.powers.com Canada: (905) 673-7295 or (514) 631-4216 Powers USA: (800) 524-3244 or (914) 235-6300 360 TABLE OF CONTENTS © 2006 Powers Fasteners,Inc.All Rights Reserved.Powerlite is a trademark of Powers Fasteners,Inc. PERFOR M A N CEDATA 1.The test data above represents average ultimate loads and should be used as guideline only.Apply an appropriate safety factor .Jobsite tests are recommended.Tectum ® is registered trademark of Tectum,Inc. Tectum 3 1 1/2280 (38.1)(1.3) Tectum 3 2440 (50.8)(2.0) Tectum 3 2 1/2595 (63.5)(2.7) 3" Insulrock5/16 2 1/2365 (63.5)(1.6) Poured Gypsum3/8 2540 (50.8)(2.4) Minimum Embedment Depth h v in. (mm) Pre-Drill in. Tension lbs. (kN) Base Material Ultimate Load Capacities for Powerlite in various Base Materials 1 ORDERI N GI N FOR M ATIO N CatalogMinimumStandard NumberLengthEmbedmentCartonWt./100 46702"1 1/2"5003 46712 1/2"1 1/2"5003 46723"1 1/2"5003 46733 1/2"1 1/2"5004 46744"1 1/2"5004 46754 1/2"1 1/2"5004 46765"1 1/2"5004 46775 1/2"1 1/2"5005 46786"1 1/2"5005 46796 1/2"1 1/2"5005 46807"1 1/2"5005 46817 1/2"1 1/2"5006 46838"1 1/2"2506 46848 1/2"1 1/2"2506 46859"1 1/2"2506 46869 1/2"1 1/2"2507 4687101 1/2"2507 468811"1 1/2"2507 468912"1 1/2"2508 469113"1 1/2"2508 469214"1 1/2"2509 38762" Powerlite Plate 3 5003 1/2 38963' Powerlite Plate 3 5003 1/2 Powerlite I N STALLATIO N SPECIFICATIO N S Anchor SizeNo.12 Driver Bit Size3 Head StylePH Head Height (in.)1/8 Head Width (in.)7/16 Washer O.D. 3 Thread Size12-13 Point StyleR Screw Size Anchor Component No.12 Screw BodyCase Hardened AISI 1018 3 1022 Carbon Steel CoatingPerma-Seal Fluoropolymer SECTION CONTENTS Page No. General Information ................. 361 Material Specifications ............. 361 Installation Specifications ........ 361 Performance Data ...................... 362 Ordering Information ................ 363 Deck Screws ANCHORMATERIALS Perma-Seal TM Coated Carbon Steel ANCHOR SIZE RANGE (TYP.) No.12 x 1 5/8" to No.12 x 18" SUITABLE BASE MATERIALS Steel Wood Concrete Roof Decks Deck Screws TM Powers USA: (800) 524-3244 or (914) 235-6300 Canada: (905) 673-7295 or (514) 631-4216 www.powers.com 361 SPECIFICATION&DESIGNMANUAL M ATERIALSPECIFICATIO N S Factory Mutual Research Corporation 3 Now known as FM Global (FM Approvals) Steel and Wood No. 12 Perma-Seal Deck Screw 3 J.I. 0K4A2.AM, J.I. 1M4A5.AM, J.I. 1M2A4.AM Recover Construction Power-Deck Screw 3 J.I. 1N2A4.AM All Deck Types Fully Adhered single-ply and modified bitumen roof coverings - J.I. 1T9A4.AM APPROVALS A N DLISTI N GS M ATERIALSPECIFICATIO N S Deck Screws TM PRODUCT DESCRIPTIO N Deck Screws are designed for attaching rigid insulation board, single-ply membrane, and wood blocking to carbon steel and wood decks. Some sizes can also be used in concrete decks. Available in carbon steel with a Perma-Seal TM coating. The deck screws are used in conjunction with insulation or membrane plates and can also be used with batten bar. For corrosion protection the screws are coated with Perma-Seal, a proprietary fluoropolymer, which meets the requirements of Factory Mutual Research Corporation Standard 4470. Insert the Phillips driver into Deck Screw head, then position screw in the plate. Insert Deck Screw through hole in plate, and drive until flush. Note: Screw must penetrate base material a minimum of 3/4". Installation Guidelines Note: In steel and wood deck,the screw should penetrate through the base material at least 3/4".To select the proper length,determine the thickness of insulation to be fastened and add the thickness of the base material to this.Then add 3/4".This will be the minimum screw length required. Head Style:PH = Phillips Head Point Style:R = Ricoh cS dPoint TABLE OF CONTENTS SPECIFICATION&DESIGNMANUAL Deck Screws TM www.powers.com Canada: (905) 673-7295 or (514) 631-4216 Powers USA: (800) 524-3244 or (914) 235-6300 362 TABLE OF CONTENTS No.12 930725655550335190185 (4.2)(3.3)(2.9)(2.5)(1.5)(0.9)(0.8) Tension lbs. (kN) 16182022242628 Nominal Gage Fastener Size PERFOR M A N CEDATA Ultimate Load Capacities for Deck Screws installed in Steel Deck 1 1.Typical steel deck used in the tests was manufactured according to ASTM A 446,Grade C having a minimum yield strength of 40,0 00 psi and a minimum ultimate tension strength of 55,000 psi. The deck was galvanized according to ASTM A 525,G 60.Variations in coating and deck type will affect performance.In some cases, especially with thick steel deck materials,pre-drilled holes may be required. Lateral Loads based on Bending 1.Apply appropriate safety factors. No.12 285415605710 (1.3)(1.9)(2.7)(3.2) Tension lbs. (kN) 3/8"1/2"5/8"3/4" Plywood Thickness Fastener Size Ultimate Load Capacities for Deck Screws installed in Plywood 1 Screw Size No.12 752,4101,815 (0.3)(10.8)(8.2) TorsionTensionShear lbs.lbs.lbs. (kN)(kN)(kN) 1.Ultimate load capacities do not consider base material. Ultimate Load Capacities for Deck Screws fasteners 1 Deck screws are normally used to fasten insulation to a roof deck. In most applications, the lateral load applied to the screw will produce a bending load, not a shear load. The allowable load in bending is based on several factors including the insulation th ickness and the material strength of the screw used. These loads should be calculated by a design professional. A typical calculation i s shown for references purposes. Property Ultimate Tensile Stress of the Steel F u = 170,000 psi (based on testing) Yield Stress of the steel F y = 130,000 psi (estimated) Allowable Bending Stress F b = 0.66* F y = 85,800 psi Deck Screw Diameters DimensionNo.12 Root 285 (1.3) lbs. (kN) Deck Screws TM Powers USA: (800) 524-3244 or (914) 235-6300 Canada: (905) 673-7295 or (514) 631-4216 www.powers.com 363 SPECIFICATION&DESIGNMANUAL TABLE OF CONTENTS PERFOR M A N CEDATA 0.10 160.52 (2.5) (0.7) 0.2564.21 (6.4)(0.3) 0.5032.10 (12.7)(0.1) 1.0016.05 (25.4)(0.1) 1.5010.70 (38.1)(0.0) 2.008.03 (50.8)(0.0) 2.506.42 (63.5)(0.0) 3.005.35 (76.2)(0.0) 3.504.59 (88.9)(0.0) 4.004.01 (101.6)(0.0) 4.503.57 (114.3)(0.0) 5.003.21 (127.0)(0.0) Maximum Allowable Lateral Load No.12 Moment Arm in. (mm) lbs. (kN) 5.502.92 (139.7)(0.0) 6.002.68 (152.4)(0.0) 7.002.29 (177.8)(0.0) 8.002.01 (203.2)(0.0) 9.001.78 (228.6)(0.0) 10.001.61 (254.0)(0.0) 11.001.46 (279.4)(0.0) 12.001.34 (304.8)(0.0) 13.001.23 (330.2)(0.0) 14.001.15 (355.6)(0.0) Maximum Allowable Lateral Load No.12 Moment Arm in. (mm) Allowable Load = Allowable Load * Section Modulus Moment Arm Calculated Allowable Lateral Loads CatalogThreadInsulation StandardStandard NumberSizeLengthThickness BoxCartonWt./100 2613No.12 x 1 5/8"1 1/2"1/8" to 7/8"1,0001,00011 2618No.12 x 2 1/4"2"1/4" to 1 1/2"1,0001,00014 2624No.12 x 2 7/8"2 5/8"1/4" to 2 1/8"1,0001,00019 2530No.12 x 3 1/4"3"3/4" to 2 1/2"1,0001,00022 2632No.12 x 3 3/4"3"3/4" to 3"1,0001,00025 2636No.12 x 4 1/2"3"1 1/2" to 3 3/4"1,0001,00027 2640No.12 x 5"3"2" to 4 1/4"1,0001,00029 2648No.12 x 6"4"2" to 5 1/4"50050040 2656No.12 x 7"4"2" to 6 1/4"50050044 2664No.12 x 8"4"4" to 7 1/4"50050048 ORDERI N GI N FOR M ATIO N Perma-Seal TM Coated No.12 Phillips Head Deck Screw © 2006 Powers Fasteners,Inc.All Rights Reserved.Deck Screws and Perma-Seal are trademarks of Powers Fasteners,Inc. SPECIFICATION&DESIGNMANUAL Stress Plates www.powers.com Canada: (905) 673-7295 or (514) 631-4216 Powers USA: (800) 524-3244 or (914) 235-6300 364 TABLE OF CONTENTS 3/16"Spike1/4"Spike#12DeckScrew 3" Round Galvalume 635720720 (2.9)(3.2)(3.2) 3" Round Plastic 530570540 (2.4)(2.6)(2.4) 3" Round Stainless 1,1401,1501,190 (5.1)(5.2)(5.4) 2" Round Galvalume 1,3501,4501,380 (6.1)(6.5)(6.2) Tension lbs. (kN) Fastener Size PERFOR M A N CEDATA Plate Pullover Capacities Factory Mutual Research Corporation 3 Now known as FM Global (FM Approvals) Steel, Wood and Structural Concrete Decks Powers Stress Plates 3 J.I. 1RA3A1.AM Recover Construction Powers Stress Plates 3 J.I. 1P3A9.AM APPROVALS A N DLISTI N GS Stress Plates PRODUCT DESCRIPTIO N Stress Plates are designed for use with Deck Screws and Spike anchors. For Powerlite specially designed stress plates are listed in the applicable product sections. Stress plates are used when attaching insulation and single ply materials to distribute load and prevent the material being fastened from pulling over the head of the fastener. In addition to the stress plates, a sealing washer and a plastic bearing washer are available for use with flashing and termination systems. Insulation plates, are used when mechanically attaching rigid form insulation to roof decks. They are manufactured in 3" diameter for use with truss head No.12 Deck Screws, and 3/16" and 1/4" Spike anchors. Two carbon steel plates, Type 304 stainless steel plate and a plastic plate are available. A recessed plate, a Type 304 stainless steel plate and a plastic plate are available for use with the No.12 hex washer head Deck Screws. The design of the insulation plate allows it to flex during installation if a fastener is overdriven preventing fracturing of the insulation board and facer. Sharp edges which could protrude above the insulation surface are eliminated by the round design. For corrosion resistance, a Galvalume coating is applied to the carbon steel plates. This coating, comprised primarily of aluminum and zinc, provides a degree of corrosion resistance which allows the material to meet the corrosion resistance required by Factory Mutual Research Corporation Standard 4470. Membrane plates, sometimes called lap plates, are used when mechanically attaching single ply material in the area of the lap or seam. They are manufactured in a 2" diameter for use with No.12 Deck Screws and 3/16" and 1/4" Spike anchors. The 2" membrane plate is formed with four barbs to provide positive engagement with the membrane to reduce the possibility of tearing the single ply material under load. For corrosion resistance, a Galvalume coating as described above is applied to the plates. SECTION CONTENTS Page No. General Information ................. 364 Performance Data ...................... 364 Ordering Information ................ 365 Stress Plates ANCHORMATERIALS Stainless Steel Galvalume Engineered Plastic SIZE RANGE (TYP.) 2" and 3" Round SUITABLE BASE MATERIALS Insulation Single-Ply Roofing Materials Stress Plates Powers USA: (800) 524-3244 or (914) 235-6300 Canada: (905) 673-7295 or (514) 631-4216 www.powers.com 365 SPECIFICATION&DESIGNMANUAL TABLE OF CONTENTS StandardStandard Cat.No.SizeBoxCartonWt/100 28961/4" (I.D.) x 1 1/8" (O.D.)1001,0001 1/4 Insulation Plates for Phillips Head Deck Screws Membrane Plates ORDERI N GI N FOR M ATIO N PlateStandard Cat.No.SizeThicknessMaterialCartonWt/100 38803"Round0.019"Galvalume5004 38813"Round0.019"Stainless Steel5004 PlateStandard Cat.No.SizeThicknessMaterialCartonWt/100 38782"Round barbed0.034"Galvalume1,0003 EPDM Sealing Washer for use with 1/4" Anchors StandardStandard Cat.No.SizeBoxCartonWt/100 39941/4" (I.D.) x 1 1/2" (O.D.) Poly1,0005,0003 1/2 Plastic Washer for use with 1/4" Anchors

less