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Stamped PE Letter - Daniels, MarcFreedom Forever LLC, 43445 Business Park Dr Suite 110, Temecula, CA 92590 Subject: Structural Certification for Installation of Residential Solar re job:Daniels, Marc, 20 VALLEY ST,, NORTHAMPTON, MA 01060 Attn.: To Whom It May Concern ROOF 1: 120 mph Ground Snow:40 psf B Min Roof Snow:35 psf ROOF 1: Current Renewables Engineering Inc. Professional Engineer info@currentrenewableseng.com Code:2015 IBC w/ 780 CMR (ASCE 7-10) Ult Wind Speed: Exposure Cat: After review of the field observation report and based on our structural capacity calculations in accordance with applicable building codes, the existing roof framing supporting the proposed solar panel layout has been determined to be: requiring new 2x4s to be sistered to the existing roof rafters. After upgrades, the roof is adequate to support the imposed loads. 11/17/2020 A field observation was performed to document the existing framing of the above mentioned address. From the field observation, the existing roof structure was observed as: Shingle roofing supported by 2x4 Rafter @ 24 in. OC spacing. The roof is sloped at approximately 33 degrees and has a max beam span of 10 ft between supports. Design Criteria: