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