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Home My WebLink AboutPV2022-144 - CalcsP42021 -14 q f J £. I�G IDD(A OJ V & a structural ENGINEERS July 30, 2021 Ironridge Inc 28357Industrial Boulevard Hayward, CA 94545 TEL: 800-227-9523 Attn.: Engineering Department Re: Engineering Certification for the Ironridge — Lynx Standing Seam Roof Clamp Ironridge — Lynx Standing Seam Roof Clamp The Ironridge Lynx is an extruded aluminum clamp intended to secure PV modules to existing standing seam roofs. PZSE, Inc. —Structural Engineers has reviewed the Ironridge - Lynx and specifically the Martin Testing Laboratories —Standing Seam PV Mounttests (MJO: 3888-01) for Uplift and Lateral strength. This letter certifies the allowable capacities for Ironridge - Lynx and all information, data and analysis within follows the structural requirements of the following Reference Documents: 1. Minimum Design Loads for Buildings and other Structures, ASCE/SEI 7-10/7-16 2. 2015/2018International Building Code, by International Code Council, Inc 3. 2019 California Building Code, by the California Building Standards Commission 4. AC 428, Acceptance criteria for modular framing systems used to support Photovoltaic (PV) Panels. Standing Seam Roof Profiles & Limitations The Ironridge - Lynx may be attached to any standing seam roof ("Folding" Styles Profile, "Snapping" Style Profiles, etc.) where the vertical seam height is at least 1.0" and the horizontal seam width is a maximum of 0.5". "Folding" Styles Profiles: y;' MAX Z' MAX ��— C "Snapping" Style Profiles: %z.' MAX z" MAX Z ZFZJL Z 1478 Stone Point Drive, Suite 190, Roseville, CA 95661 1 of 3 T 916.961.3960 P 916.961.3965 W www.pzse.com Experience I Integrity I Empowermont The Ultimate Load Values based on the Martin Testing Laboratories Uplift and Lateral tests and adjusted per the Reference Documents listed above are as follows: Table 1: Ironridge - Lynx Ultimate and Allowable Values for uplift, lateral -normal to the seam and lateral -parallel to the seam Ironridge Lynx Ultimate Values Allowable Values',2 Lateral Lateral Lateral - Normal Lateral- Parallel Standing Seam Profile GA. Uplift Z+, Ibs to the Parallel Uplift Z+, Ibs Normal to to the Thickness to the the seam sm e m seam X Y+/-, Ibs X a + / ms +/-,Ibs Ibs 22 1500 300 600 750 120 240 "Folding" Style 24 1500 200 600 750 80 240 26 1000 200 600 Soo 80 240 24 862 500 825 431 200 330 "Snapping" Style 26 862 350 425 431 140 170 Other' 24 300 100 80 150 40 32 1. The Allowable Values are applicable to the PV system with a Module height not exceeding 6" from the roof surface. 2. The Allowable Values utilize the Factor of Safeties listed in Table 2. It is the responsibility of the designer to employ a factor of safety appropriate for the project. 3. Standing seam roof profiles not shown that meet the dimensions limitations may use the ultimate load values for'Other'. Table 2: Manufacturer's Recommended Minimum Factor of Safety Manufacturer's Uplift Lateral —Normal to seam Lateral — Parallel to seam Recommended Minimum Factor of Safety, 0 2.0 2.5 2.5 Failure Modes Table 3: Summary of Failure Modes Standing Seam Profile: Uplift Lateral - Normal to Seam Lateral - Parallel to Seam "Folding" Style Tearing/yielding of the Breakage of a clamp Tearing/yielding of the seam component seam "Snapping" Style Tearing/yielding of the Breakage of a clamp Tearing/yielding of the seam component seam 1478 Stone Point Drive, Suite 190, Roseville, CA 95661 T 916.961.3960 F 916,961.3965 W www.pzse.com 2 of 3 Experience I Integrity I Empowerment Designer Responsibility . The Ironridge - Lynx standing seam roof clamp is intended to be used under the responsible charge of a registered design professional where required by the authority having jurisdiction. In all cases, the Ultimate Values shall be reduced by an appropriate Factor of Safety under the direction of a design professional with sufficient structural engineering knowledge and experience to be able to: Evaluate whether the Ironridge Lynx is applicable to the project, based on the characteristics of the project, and Understand and determine the appropriate environmental loading conditions. The user or design professional in responsible charge assumes full design responsibility. Refer to the Manufacturer's Installation manual for more information. The capacity of the building structure to support the loads imposed on the building by the Ironridge Lynx including the fasteners, attachment to underlying structure, and the capacity of the underlying members are outside the scope of this certification. The capacity of the building is outside the scope of our review. If you have any questions on the above, do not hesitate to call. Prepared By: PZSE,Inc—Structural Engineers Rosevil Ie,CA 1478 Stone Point Drive, Suite 190, Roseville, CA 95661 1 916.963.3960 F 916.961.3965 W w w.pzse.com 3 of 3 Experience I Integrity I Empowerment 1=1/2" Snap Lock Engineered Panel Cli Application Standing seam panel clips used for attachment of snap lock type panels wherein mechanical seaming is not required Features and Benefits • Manufactured from high quality, corrosion resistant steel meeting strict mechanical property requirements • Tightly controlled manufacturing tolerances for a secure and functional fit every time • Allows unlimited thermal movement. Always follow the standing seam panel manufacturer's details and instructions on proper use, location and performance values as well as properly fixing their respective roof panels to the structure to prevent uncontrolled sliding Product Selection Material No. I Item Description I Carton Wt. (ibs.1 I Carton Qty. 1023821 I 1-1/2" Snap lock clip 18 ga. (1.2 mm) 6-90 Galvanized 138 250 1319660 I 1-1/2" Snap lock clip 18 ga. (1.2 mm) 304SS 142 1260 (3.05) 0.12V (e.ee) 0.3to- (38.35) (3.81) (3.81) 0.15- 0.15- Installation and Application Considerations • Compatible with: • Quadro 1-1/2" Snap CAD-1023821-A' Specifications Height: Width: Holes: 1.51" (38.35 mm) 3.50° (88.90 mm) 2-hole • Refer to SFS standing seam fastener offering for panel clip attachment options • Always consult with panel manufacturer or design engineer to ensure proper clip recommendations us Canada Metric values are approximate conversions. T 8002344633 T 866 847 5400 All information is non-bindingand without guarantee. Before using the products, all specifications andcalculations must be chocked by a suitably qualified person and local regulations must be observed. This document is subject us.sfs.com ca.sfs.com torevision. We reserve the right to make technical changes.(0912021, V1.01) I #10 Type A Pancake SSR Panel Clip to Wood Fastener Features and Benefits • Pancake head low profile fits under most panel profiles • Type A drill point for fast installation • #2 square drive provides driving stability • Zinc plated Product Selection Application Standing seam panel clip attachment to wood substrate Material No. Fastener Length Thread Length* Description Carton Wt. Obs.) Carton Qty. (in) (mm) 1545869 1" 25 Full CSTA-#10x1-PC-SQ2 36 5,000 1545862 1-1/2" 38 Full CSTA-#10xl-1/2-PC-SQ2 25 2,500 1545882 2" 51 Full CSTA-#10x2-PC-SO2 28 2,000 Plain product bagged 250 pieces, unless otherwise noted. *Note -Thread length measured from tip of the point to top of the threads. 'o I 0 N u$ Canada Metric values are approximate conversions. T 800 234 4533 T 866 847 5400 Allinformation is non -binding and without guarantee. Before using the products, all specifications and calculations 16 LL must be checked by a suitably qualified person antl local regulations must be observed. This document is subject w us.sfs.com ca.sfs.com to revision. We reserve the right to make technical changes. (08/202 1, Vi.g 1) 0 #10 Type A Pancake SSR Panel Clip to Wood Fastener (11.0) 0.435 42 Square Drive 0,074" (4.88) 0.191" ajar Bland. 45 Sharp Point CSTA-#10xL-PC-SQ2-ReviR Product Specifications Drill Point: Type Diameter: #10 (4.83mm) Thread Major Dia: 0.191" (4.85 mm) Threads Per Inch: 12 Thread Minor Dia: 0.130" (3.3mm) Head Style: Pancake Drive: #2 square Performance Data'•2 Material Strength Pull Out Strength Wood: SPF Tensile 1825 Ibf / 8118 N ii (25.4 mm) penetration 544 Ibf / 2420 N Shear 1535 Ibf / 6828 N 1-1/2" (38.1 mm) penetration 995 Ibf / 4426 N Torsional 60 Ibf-in / 6.8 N-m t Pull out strength values may vary from tested loads depending upon specific wood density variations 2 PLK 12403 Installation and Application Considerations Tools: 0-2500 rpm screw gun equipped with depth sensing nose piece. Use of impact guns or hammer drills is not recommended. Special care needs to be taken when installing #10 Type A Pancake clip fasteners into wood substrate less than 1"in thickness. Stripping or partially stripping the fastener out during installation compromises the clamp load and can affect the performance of the fastener. us Canada Metric values are approximate conversions. T 800 234 4533 T 866 847 5400 All information is non -binding and without guarantee. Before using the products, all specifications and calculations LL must be checked by a suitably qualified person and local regulations most be observed. This document is subject m us.SfS.com ca.sfs.com to revision. We reserve the right to make technical changes.(08/2021. V1.01) O