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Page 1 of 10 <br /> <br />July 11, 2016 <br />Mr. Jared Wiener Project Number 1160481C <br />SolarRoofHook <br />5830 Las Positas Road <br />Livermore, CA 94551 <br />Subject: 90° High Wind Flat Tile Hook (Part # 17632) Laboratory Load Testing <br />Dear Mr. Wiener: <br />As requested, Applied Materials & Engineering, Inc. (AME) has completed load-testing the 90° High <br />Wind Flat Tile Hook; see Appendix A, Figure 1. The purpose of our testing was to evaluate the <br />compressive and tensile (uplift) load capacity of the 90° High Wind Flat Tile Hook attached to a 2"x4" <br />Douglas Fir rafter using two 5/16"Øx4" QS T17 lag screws. <br />SAMPLE DESCRIPTION <br />Mockup samples were delivered to our laboratory on June 3, 2016 and on June 27, 2016. Mockup <br />configuration consisted of three 12" long rafters at 6.5"o.c., screwed to 1/2" Structural I plywood. The <br />90° High Wind Flat Tile Hook is attached through the plywood into a rafter with two fasteners. <br />TEST PROCEDURES & RESULTS <br />1. Compression Load Test <br />A total of three tests were conducted for compressive load capacity on June 9, 2016 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 0.10 in. /min. without shock until the hook was bent and came in contact with the test board; <br />displacement at maximum load was recorded. Based on the above testing, the average maximum <br />compression load of the 90° High Wind Flat Tile Hook attached to a 2"x4" Douglas Fir rafter using two <br />5/16"Øx3" lag screws was determined to be 691 lbs. Detailed results are provided in Table I. Test setup <br />and mode of failure are provided in Appendix B, Figure 1. <br />The specific gravity and moisture content of the rafter was tested in accordance with ASTM D2395, <br />Method A (oven-dry). The average specific gravity and moisture content were determined to be 0.358 <br />and 12.4%, respectively. <br />1043 W Fairbrook <br />Ln05/19/23