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structural DCH Engineering JAN 14 2019 TOWN OF QUEENSBURy BUILDING&CODES DATE: January 8, 2019 RE: 141 Montray Road, Queensbury, NY 12804 To Whom It May Concern, As per your request we conducted a Preliminary Structural Condition assessment that included a site inspection on December 18, 2018. This inspection included an examination of the roof structure and condition as well as any structural drawings that were available. PV solar panels are proposed to be installed on roof areas, as summarized below. The panels are clamped to rails which are attached to the roof with a lagged mounting system, and installed per manufacturer's specifications and recommendations. It was found that the roof structure noted on S3 can satisfactorily withstand the proposed additional loads and will meet the applicable standards included in the ASCE 7-10 and 2015 IRC. Design Criteria: Wind speed = 115 MPH Ground snow load = 50 psf Roof dead load = 9 psf Solar System Dead Load = 3 psf The roof was determined to have asphalt shingles atop half-inch plywood sheathing. Overall the roof area is structurally adequate to support the additional load of the solar panels and their framework. Acknowledged by: David C. Hernandez, P.E., C.E.M. NY PE No. 097026 01/09/19 Of NEW }, 'IT IS A VIOLATION OF SECTION r • ,c©0,N r Q,p 7209 OF ARTICLE 145 OF THE 1 STATE EDUCATION LAW OF * • NEW YORK FOR ANY PERSON TO c] ALTER ANY DOCUMENT THAT 1• BEARS THE SEAL OF A ' PROFESSIONAL ENGINEER. UNLESS THE PERSON IS �Op g70 o ACTING UNDER THE DIRECTION "FE38O: OF A LICENSED PROFESSIONAL ENGINEER."