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HomeMy WebLinkAboutRT mini and SNR shingle(1) Self-flashingRT� MINI base for • i metal roof-top PV mounting systems RT-MINI is suitable for mounting any rail system with a conventional L-Foot. a . yr 1 b Dual bolt design : M8 or 5/16" for L-Foot & 1 /4" for EMC Easym r 1/4" Hex Bolt ICCscrew guide upper channel Flat lip for M8 or 5/16" ICC ESR 3575 Pv Cable, Hex Bolt clips 00 bottom channel Call Now for more details 858-935-6064 mountingta KOOT ileci Smarter PV solutions . .. . .. . bottom . . . . . . RT� MINI Flexible Flashing certified by the International Code Council (ICC) Engineered to AST M D 1761 (standard Test Methods for Mechanical Fasteners in Wood) Components Dimensions in (mm) RT2-00-M I N I B K PAT : PENDING o 0 3 1/2 (90) 0 0 2 (50) � o 0 o �rn MINI base : 20 ea.10 ANINO Screw : 40 ea. Rafter installation Extra RT-Butyl : 10 ea. Optional item 5 x 60mm Mounting screw(RT2-04-SD5-60) : 100 ea./Bag 5/16" Hex bolt, washer& nut set (RT-04-BN30sL-Us): 100 ea./Bag RT-Butyl (RT2-04-BUTYLT) : 10 ea./Box RT-Butyl is Roof Tech's flexible flashing used in 700,000 residential PV systems for the last 24 years. It is the first PV mounting system with Flexible Flashing certified by the ICC. Metal Flashing Retrofit Flexible Flashing t/ Deck installation Shedding water? 100% Waterproof ICC ESR-3575 ASTM2140 testing UV testing (7500 hrs.) i -ter-7r s P.E. Stamped Letters available at www.roof-tech.us/support Roof Tech Inc. .._._........ 858.935.6064 ev.03-2020 P7Structura ENGINEERS April 12, 2018 SnapNrack 775 Fiero Lane, Ste. 200 San Luis Obispo, CA 93401 TEL: (877) 732-2860 Attn.: SnapNrack- Engineering Department Subject: Report#2017-03227.03—Engineering Certification and Span Tables for the SnapNrack Ultra Rail Flush-Mount Solar Photovoltaic Racking System PZSE, Inc.—Structural Engineers has reviewed the SnapNrack Ultra Rail Flush-Mount Racking System, a proprietary mounting system intended for rooftop installation of solar photovoltaic (PV) panels, and has provided the attached span tables. This review included the complete system including the 6005-T5 aluminum rail, attachment devices, splice elements, and PV Panels. All information, data, and analysis contained within are based on, and comply with,the following building codes and typical specifications: Building Codes: 1. ASCE/SEI 7-10, Minimum Design Loads for Buildings and Other Structures, by American Society of Civil Engineers 2. 2015 International Building Code, by International Code Council, Inc. 3. 2015 International Residential Code, by International Code Council, Inc. 4. AC428, Acceptance Criteria for Modular Framing Systems Used to Support Photovoltaic (PV) Panels, November 1, 2012 by ICC-ES 5. Aluminum Design Manual 2015, by The Aluminum Association, Inc. 6. ANSI/AWC NDS-2015, National Design Specification for Wood Construction, by the American Wood Council Design Criteria: Risk Category II; Seismic Design Category=A- E Wind Loads: Basic Wind Speed (ultimate) per ASCE 7-10= 110 mph to 190 mph. Includes roof pitches from 0°to 90°, up to 60 feet mean roof height, and exposure categories B, C, & D. Parapets, roof overhangs, and topographic wind speed adjustment have not been considered. See Appendix A for conversion to Service-level wind speeds per ASCE 7-05. Snow Loads: Ground Snow Load =0 to 120 (psf). Spans are based on the sloped roof snow load (Ps) corresponding to each ground snow load. See Appendix B to adjust span tables for non-reducible snow loads. PV Modules: All solar PV modules with metal frames. Modules up to 5'-6" long (66 inches long) are referred to as "60-Cell", and modules up to 6'-6" long (78 inches long) are referred to as "72-Cell". Length is measured perpendicular to the rail, regardless of panel orientation. If you have any questions on the above, do not hesitate to call. Prepared by: PZSE, Inc.—Structural Engineers Roseville, CA 8150 Sierra College Boulevard, Suite 150, Roseville, CA 95661 916.961.3960 F 916.961,3965 w www.pzse.corn 1/106 Experience I Integrily I Ernpowermenl P7 structural ENGINEERS Table of Contents Item .................................................................................................................................................... Page# Description and Limitations of the Ultra Rail Flush-Mount System........................................................................................3 Span Tables for Ultra Rail Flush-Mount, 60-Cell Modules with Attachment Bin 1.................................................................6 Span Tables for Ultra Rail Flush-Mount, 60-Cell Modules with Attachment Bin 2............................................................... 12 Span Tables for Ultra Rail Flush-Mount, 60-Cell Modules with Attachment Bin 3............................................................... 18 Span Tables for Ultra Rail Flush-Mount, 60-Cell Modules with Attachment Bin 4...............................................................24 Span Tables for Ultra Rail Flush-Mount, 60-Cell Modules with Attachment Bin 5...............................................................30 Span Tables for Ultra Rail Flush-Mount, 60-Cell Modules with Attachment Bin 6...............................................................36 Span Tables for Ultra Rail Flush-Mount, 72-Cell Modules with Attachment Bin 1...............................................................42 Span Tables for Ultra Rail Flush-Mount, 72-Cell Modules with Attachment Bin 2...............................................................48 Span Tables for Ultra Rail Flush-Mount, 72-Cell Modules with Attachment Bin 3...............................................................54 Span Tables for Ultra Rail Flush-Mount, 72-Cell Modules with Attachment Bin 4...............................................................60 Span Tables for Ultra Rail Flush-Mount, 72-Cell Modules with Attachment Bin 5...............................................................66 Span Tables for Ultra Rail Flush-Mount, 72-Cell Modules with Attachment Bin 6...............................................................72 Appendix A: ASCE 7-10 to ASCE 7-05 Wind Conversion .......................................................................................................78 Appendix B: Snow Load Conversion .....................................................................................................................................79 AppendixC: Structural Details..............................................................................................................................................80 8150 Sierra College Boulevard, Suite 150, Roseville, CA 95661 91&961.3960 F 916.961.3965 w www,pzse.corn 2/106 Experience I In legri ly I Ernpowermen I P7 structural ENGINEERS Flush-Mount System Geometry Limitations: Flush-Mounted PV modules are designed per the Components and Cladding provisions of ASCE 7. Flush-Mounted PV modules shall be oriented parallel to the plane of the roof surface, and shall be located between 2"to 10" clear from the surface of the roof to the PV module. The maximum cantilever length of the rail is L/3,where "L" is the maximum rail span after adjustments, provided there is at least 1 module length between maximum cantilevers. The modules shall be centered between the rails with consideration of industry standard tolerance. Installations utilizing the Tile Replacement or Tile Hook attachment devices are permitted to have panels offset from the centerline of the rails. Components and Cladding Roof Zones: The Edge Zones of the roof shall be determined based on the building's dimensions.The Edge Zone, "a", is the smaller of 10% of the least horizontal dimension, or 40%of the building height, and "a" shall not be taken as less than 3 feet (ASCE 7-10 figures 30.4-1 & 30.4-2). For buildings exceeding a least horizontal dimension of 60 feet,further analysis may be required to determine proper Edge Zones. Edge and Corner Zone spacings (Zone 2 &3, respectively) apply only to mounts located in those Zones, not to all the mounts supporting the module. For the 45-90 degree roof pitch range, mount spacings shall be determined utilizing roof zones 1, 2, &3. CORNER ZONE 3 EDGE ZONE 2 SEE DETAIL FOR MOUNT LOCATION "a"OR 3'-0"MIN af _ o d INTERIOR ZONE O1 O z o m O M = z 0 w RIDGE O z _ INTERIOR m ZONE a J Q H GABLE N O INTERIOR ZONE o� HIP w =a HATCHED AREA INDICATES"a"DISTANCE a=0.1 x(LHD)OR MINIMUM OF 3'-0" WALL CORNER ZONE SEE DETAIL FOR MOUNT LOCATION Figure 1: Roof Edge and Corner Zones 8150 Sierra College Boulevard,Suite 150, Roseville,CA 95661 916.961.3960 F 916.961.3965 W www.pzse.corn 3/106 Experience I Integrity I Empowerment P7Structura ENGINEERS Attachment to Roof: The attached span tables include consideration of the attachment device capacity, based on UL 2703 load testing performed by SnapNrack. Tested load values are developed with 5/16" 0 lag screws with an effective embedment of 2- 1/2" into a Douglas Fir substrate, with a reference withdrawal (uplift or pullout) load capacity of 532 lb, and a reference shear(side or lateral) load capacity of 270 lb for resisting short-term wind or seismic loads. Reference values are the base values, before any adjustment is made per the NDS. Installations into alternate substrates or which use alternate fasteners shall be permitted; provided that the fastener has tested or code-derived allowable load capacities, and meets one of the following two criteria: A)The allowable load values for the alternate fastener shall meet or exceed the allowable values noted above for the 5/16" 0 lag screws in Douglas Fir; or B)the span length identified in the "span tables" shall be reduced according to the more restrictive of the following two formulas: Alternate Reference Withdrawl Capacity Rail Span = Table Span 532 lb Or Alternate Reference Shear Capacity Rail Span = Table Span 270 lb These formulas shall not be used to increase the allowable span beyond the spans listed in the span tables. Attachment Devices: The span tables have been grouped into 6 separate sets of attachment devices called "Bins",which are presented below. To use this table, find the attachment device to be used in the list below,then read across to determine which bin the attachment is in. The spans may then be determined from the table with the corresponding Bin number. Structural details for the system and attachments may be found in Appendix C. Note: Side load direction is parallel to rafter. Maximum Reaction Loads Attachment Device Name: Bin No. Down Up Side Standard Base Seam Clamp with L-Foot 1 235 235 212 Wide Base Seam Clamp with L-Foot Universal Tile Hook Flat Tile Hook 2 394 318 417 Hanger Bolt Clamp Flashed L-Foot (92 Deg) 3 1469 309 251 Tile Replacement 4 1333 445 93 All Purpose L-Foot (90 Deg) Umbrella Comp Kit Corrugated Straddle Block with L Foot Metal Roof Base with L-Foot Metal Roof Base with 7in Standoff 5 788 405 236 5-1/2in Standoff on 4-Hole Base 7in HD Standoff on 6-Hole Base 5-1/2in, 7in, or 8-1/2" Standoff on 1-Hole Base 8-1/2in Standoff on 4-Hole Base 6 788 445 163 Table 1:Allowable load Capacities of SnapNrack Flush-Mount Attachment Devices. 8150 Sierra College Boulevard,Suite 150, Roseville,CA 95661 916.961.3960 F 916.961.3965 W www.pzse.corn 4/106 Experience I Integrity I Empowerment P7Structura ENGINEERS Design Responsibility: These tables are intended to be used under the responsible charge of a registered design professional where required by the authority having jurisdiction. In all cases, these tables should be used under the direction of a design professional with sufficient structural engineering knowledge and experience to be able to: • Evaluate whether these tables are applicable to the project, and • Understand and determine the appropriate values for all input parameters of these tables. This letter certifies that the SnapNrack Ultra Rail Flush-Mount Racking System, when installed according to the limitations of this letter and the attached span tables, is in compliance with the above codes and loading criteria. This certification excludes evaluation of the building structure to support the loads imposed on the building by the array; including, but not limited to: strength and deflection of structural framing members,fastening and/or strength of roofing materials, and/or the effects of snow accumulation on the roof. This requires additional knowledge of the building and is outside the scope of the certification of this racking system. If you have any questions on the above, do not hesitate to call. Prepared by: PZSE, Inc.—Structural Engineers Roseville, CA 8150 Sierra College Boulevard, Suite 150, Roseville, CA 95661 916.961.3960 F 916.961,3965 w www.pzse.corn 5/106 Experience I Integrily I Empowerrnenl i ice% ter. The Ultimate Value Rooftop Solar Industry g leadin Wire Mounts available for all Management Solutions roof types ft An install experience ��. Compatible with all unlike any other Series 100 Module Clamps & Accessories Start Installing Ultra Rail Today 11 RESOURCES sna • rack.com/resou rces Allllllv� DESIGN . •nrack.com/conf 1• . • WHERE • BUY snapnrack.com/where-to-buy The SnapNrack Ultra Rail is a sleek, lightweight rail solution for mounting solar modules on the roof. The Entire System is a Snap to Install • New Ultra Rail Mounts include snap-in brackets for attaching rail • Compatible with all the SnapNrack Mid Clamps and End Clamps customers love • Universal End Clamps and snap-in End Caps provide a clean look to the array edge Unparalleled Wire Management • Open rail channel provides room for running wires resulting in a long-lasting quality install • Industry best wire management offering r* includes Junction Boxes, Universal Wire Clamps, MLPE Attachment Kits, and Conduit Clamps • System is fully bonded and listed to UL 2703 Standard The Largest Span Capabilities of any Light Rail Solution This table was prepared in compliance with applicable engineering codes and standards. 110 115 120 125 130 135 140 145 150 155 160 165 1170 175 P18 1190 Values are based on the following: E 1 • ASCE 7-10 s l • Chapter 30 Wind Loads & 10 I I I I I I Chapter 7 Snow Loads 15 • Roof Slope: 7 - 27 deg 20 � • Roof Height: 0 - 30 ft 25 • Exposure: B 30 • Roof Zone: 1 35 II I I I • Module Orientation: Portrait 40 • Roof Type: Comp 45 • 50 I I I Visit SnapNrack.com for detailed 60 span tables and certifications. 70 80 System Span Key 90 6 ft Spans 100 4 ft Spans 110 Spans 120 Quality. Innovative . Superior. SnapNrack Solar Mounting Solutions are engineered to optimize material use and labor resources and improve overall installation quality and safety. . • www.snapnrack.com . . SnapNrack- snapnrack.com Solar Mounting Solutions SnapNrack Umbrella Sealing Technology Q Featuring New Innovative Flashing Q Smaller 9"x12" size allows for easier Insertion under shingles Q Alignment markers make it easy to locate pilot holes Q Rounded corners make for easier Insertion & eliminate corner points from folding up • Innovative Flashing Elevates Protection. New flashing uses a fully formed raised cone to prevent any potential water from getting into penetration. Feel secure as the flashing is one piece and doesn't rely on multiple parts sealing together. • Mechanical Design Creates a Lifelong Seal. Patented Umbrella technology utilizes unique Umbrella Washer to seal lag bolt, L Foot, and flashing and prevent any potential roof leaks. Technology passes UL 2582 Umbrella Gasket Wind Driven Rain Test without a rubber Raised Cone Flashing seal, however rubber gasket is included Umbrella Washer for extra peace of mind. • Single Fastener Eliminates Extra Steps. Utilize one lag bolt with Umbrella Washer to secure the entire mount assembly and flashing. No longer necessary to attach a base, then a flashing, then a mount as all are secured in one step. • Single Tool Installation. SnapNrack was the first in the industry to develop a complete system that only requires a single tool. That tradition is continued as a '/2" socket is still the only tool necessary to secure the mount as well as all other parts of the system. Note:Flashing shown in yellow for illustration purposes only. Industry Leading Spans for a Light Rail Solution This table was prepared in compliance with applicable 110 01 engineering codes and 110 1151120 1125 130 135 140 145 150 155 160 1165 1170 175 180 190 standards. Values are based on o the following: s F_F_r I I F7_1 10 • ASCE 7-10 15 • Chapter 30 Wind Loads & 20 � Chapter 7 Snow Loads 25 • Roof Slope: 7 - 27 deg 30 • Roof Height: 0 - 30 ft 35 � • Exposure: B 40 • Roof Zone: 1 45 • Module Orientation: Portrait 50 � • Module Type: 60 Cell Modules 60 • Roof Type: Comp 70 80 System Span Key 90 � 6 ft Spans 100 110 4 ft Spans 120 2 ft Spans Visit SnapNrack.com for detailed span tables and certifications. Single Lag Secures Mount to Roof Raised Cone Flashing Pre-assembled Ultra M L Foot& Clamp Certifications SnapNrack Ultra Rail system has been evaluated by Underwriters Laboratories (UL) and Listed to UL/ANSI Standard 2703 for Mechanical Loading and Fire. Additionally it is listed to UL 2582 for wind-driven rain. 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