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Stamped PE Letter - Kowalczyk, StevenFreedom Forever LLC, 43445 Business Park Dr Suite 110, Temecula, CA 92590 Subject: Structural Certification for Installation of Residential Solar re job:Kowalczyk, Steven, 14 Walnut St, Northampton, MA 01060 Attn.: To Whom It May Concern ROOF 1: 117 mph Ground Snow:40 psf B Min Roof Snow:35 psf ROOF 1: Current Renewables Engineering Inc. Professional Engineer info@currentrenewableseng.com Design Criteria: Code:2015 IBC w/ 780 CMR (ASCE 7-10) Ult Wind Speed: Exposure Cat: adequate to support the imposed loads. Therefore, no structural upgrades are required. 6/9/2021 Observation of the condition of the existing framing system was performed by an audit team of Freedom Forever LLC . After review of the field observation data, structural capacity calculations were performed in accordance with applicable building codes to determine adequacy of the existing roof framing supporting the proposed panel layout. Please see full Structural Calculations report for details regarding calculations performed and limits of scope of work and liability. The design criteria and structural adequacy are summarized below: Shingle roofing supported by 2x6 Rafter @ 24 in. OC spacing. The roof is sloped at approximately 33 degrees and has a max beam span of 10.5 ft between supports. Exp: 6/30/2022 CIVIL NO. 56313 VAOSMS IAGHAHR