1916 ROCKEFELLER AVE 2025-03-24 - Laserfiche WebLink

Engineering Alliance, Inc � Engineering Alliance, Inc https://www.eng-alliance.com https://www.eng-alliance.com 03-January-2024 Com ponents and Cladding Roof Zones: The Com ponents and Cladding Roof Zones shall be determ hed based on ASCE 7-10&7-16 Com ponent and Cladding design. Unirac 1411 Broadway Blvd. NE Notes: 1 U-Builder 2.0 Online tool analysis is only for Unirac NXT UM CANT system sand do not include Albuquerque, NM 87101 roof capacity check. Tel:505 242 6411 2. Risk Category II per ASCE 7-16. 3. Topographic factor, kzt is 1.0. Attn.: Engineering Departm ant 4. Array Edge Factor YE= 1.5 5. Average parapet height is 0.0 ft. Subject: Engineering Certification for the Unirac NXT UM CUNT System to Support Photovoltaic Panels. 6. Wind speeds are LRFD values. 7. Attachm ant spacing(s)apply to a seism c design category E or less. The Unirac NXT UM CUNT Flush-to-Roof is an extruded alum hum rail system that is engineered to hold m cst fram Ed solar m odules to a roof structure and installed parallel to the roof surface. Design Responsibility: We have reviewed the NXT UM CUNT system,a proprietary m cunting system for rooftop solar photovoltaic (PV) panels The U-Builder 2.0 design software is intended to be used under the responsible charge of a registered design professional where installation, and the U-Builder 2.0 Online tool.This U-Builder 2.0 software includes analysis for the NXT UM CUNT rail and NXT required by the authority having jurisdiction. In all cases, this U-Builder 2.0 software should be used under the direction of a UM CUNT hardware.All inform a:ion,data, and analysis are in com Oiance with the following codes,city ordinances, and typical design professional with sufficient structural engineering knowledge and experience to be able to: specifications: • Evaluate whether the U-Builder 2.0 Software is applicable to the project,and Codes: 1 2015-2018 Washington State Building Code. • Understand and determ he the appropriate values for all input param Eters of the U-Builder 2.0 software. 2. ASCE/SEI 7-10,7-16 M him Em Design Loads for Buildings and Other Structures. 3. International Building Code,2015-2021 Edition w/Provisions from SEAOC PV-2 2017. This letter certifies that the Unirac NXT UM CUNT system,when installed according to the U-Builder 2.0 engineering report 4. International Residential Code,2015-2021 Edition w/Provisions from SEAOC PV-2 2017. and the m aiufacture specifications, is in com liiance with the above codes and loading criteria. 5. AC428, Acceptance Criteria for M odular Fram hg System s Used to Support Photovoltaic (PV) Panels, Novem ber 1,2012 by ICC-ES. This certification excludes evaluation of the following com ponents: 6. Alum hum Design M anual 2015&2020 Edition. 1)The structure to support the loads im posed on the building by the array; including, but not lim ted to:strength and deflection of structural fram hg m Em bers,fastening and/or strength of roofing m aerials,and/or the effects of snow The following are typical specifications to m eet the above code requirem eats: accum Elation on the structure. 2)The attachm ant of the NXT UM OUNT Rails to the existing structure. Basic Wind Speed 95-190 0(m ph) Design Criteria: Ground Snow Load=0-1 (psf) 3)The capacity of the solar m odule fram eto resist the loads. = IRoof M can Height=0-60(ft) This requires additional knowledge of the building and is outside the scope of the certification of this racking system. Roof Pitch=0°-45° Exposure Category=B,C&D Please feel free to call for any questions or clarifications. Attachm eit Spacing: P er U-Builder 2.0 Engineering report. Cantilever: T he m acim Em rail cantilever length is 1/3 of the adjacent span. Prepared By Engineering Alliance, Inc Clearance: 2 "to 10"clear from the top of the roof to the top of the PV panel. 0� Sugar Land,TX ...., W.4g of •.. Tolerance(s): 1 .0"tolerance for any specified dim aision in this report is allowed for installation. '4/ Oe Installation Orientation: S ee NXT UM CUNT Installation Guide. �p. Q 51947 Landscape-PV Panel long dim a�sion is parallel to ridge/eave line of the roof and the PV panel is .e� FGisTE�.��••'•••. m cunted on the long side. �1SS70NAL�� Portrait- PV Panel short dim Ension is parallel to ridge/eave line of the roof and the PV panel is ,C m cunted on the short side. 03-JAN-2024 EXP.:15-DEC-2025 4603 April Meadow Way,Sugar Land,TX 77479. Ph:832 865 4757 4603 April Meadow Way,Sugar Land,TX 77479. Ph:832 865 4757