Laserfiche WebLink
5830 Las Positas Road, Livermore CA 94551 | 3948 Airway Drive, Rock Hill SC 29732 <br />Phone: (844) 671-6045 | Fax: (800) 689-7975 | www.solarroofhook.com <br />SolarRoofHook is a division of Quickscrews International Corp.6 <br />Page 1 of 8 <br />July 25, 2012 <br />Mr. Rick Gentry Project Number 112448C <br />QUICKSCREWS INTERNATIONAL <br />5830 Las Positas Road <br />Livermore, CA 94551 <br />Subject:Spanish Tile Roof Hook (Part #STRH90) Laboratory Load Testing <br />Dear Mr. Gentry: <br />As requested, Applied Materials & Engineering, Inc. (AME) has completed load-testing Spanish tile <br />roof hook (see Appendix A, Figure 1). The purpose of our testing was to evaluate the tensile and <br />compressive load capacity of the Spanish tile roof hook attached to a 2"x4" Douglas Fir rafter using #12 <br />Quickscrew (5/16"Øx 3" L T17 302 SS). <br />SAMPLE DESCRIPTION <br />Mockup samples were delivered to our laboratory on July 6, 2012. Mockup configuration consisted of <br />three 16" long rafters at 7"o.c., screwed to 1/2" OSB sheathing. The Spanish tile roof hook is attached <br />through the OSB into the rafter with two fasteners. <br />TEST PROCEDURES & RESULTS <br />1. Compressive Load Test <br />A total of three tests were conducted for compressive load capacity on July 14, 2012 using a United <br />Universal testing machine. Samples were rigidly attached to the testing machine and a compressive load <br />was applied to the hook. The samples were loaded in compression at a constant rate of axial deformation <br />of 0.09 in. /min. without shock until the bracket was in contact with the OSB sheathing; maximum <br />deflection at maximum load was recorded. Detailed results are provided in Table I. Test setup and <br />typical bracket bending at maximum load are provided in Appendix A. Based on the above testing, the <br />average maximum compression load of the Spanish tile roof hook attached to a 2"x4" Douglas Fir rafter <br />using #12 Quickscrew was determined to be 230 lbf. <br />2.Tensile Load Test <br />A total of three tests were conducted for tensile load capacity on July 14, 2012 using a United Universal <br />testing machine. Samples were rigidly attached to the testing machine and a tensile load was applied to <br />the hook. The samples were loaded in tension at a constant rate of axial deformation of 0.09 in. /min. <br />without shock until the bracket was bent and the bolt began to pull-out; maximum deflection at <br />maximum load was recorded. Detailed results are provided in Table II. <br />5830 Las Positas Road, Livermore CA 94551 | 3948 Airway Drive, Rock Hill SC 29732 <br />Phone: (844) 671-6045 | Fax: (800) 689-7975 | www.solarroofhook.com <br />SolarRoofHook is a division of Quickscrews International Corp. 7 <br />213 S Kenton Dr <br />10/04/22