HomeMy WebLinkAboutENGINEER LETTER APPROVED - 21-00690 - 664 Dell Dr - Solar PanelsAuthor Name Author Email Author Phone No.:
Larry Beesley Larry.Beesley@rexburg.org 208-372-2176
Description : 664 Dell Dr - Solar PanelsAddress : 664 Dell DrRecord Type : Solar PanelsDocument Filename : 2862-64645-109395-411-SEStampedReviewLetter.pdf
Comment Author Contact Information:
Corrections in the following table need to be applied before a permit can be issued
Review Report Approved
# 21-00690
Page Reference AnnotationType Author : Department Status Page Review Comments Applicant Response Comments
Pg 1 Stamp Larry Beesley : Building Open 1 Approved - Building Inspector
Solar Panels
Approval of plans does not constitute approval of variance from code
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ARC Design
409 N. Main Street
Elmer, NJ 08318
(856) 712-2166 fax: (856) 358-1511
Date: August 19, 2021
Re: Structural Roof Certification
Subj: Hodgson Residence, 664 Dell Dr., Rexburg, ID 83440
We have provided a review of the house roof construction of the above named property in regards to
verifying the capacity of the existing roof for installation of a new Solar Panel Array.
We have found the residence to be of wood frame construction bearing walls with wood framed roof
system. Roof 1 is of 2x4 @ 24” o.c. truss and is sheathed with 1/2” ext-ply sheathing and a single layer
of asphalt shingle roofing. Roof 2 is of 2x4 @ 24” o.c. rafters and is sheathed with 1/2” ext-ply
sheathing and a single layer of asphalt shingle roofing.
The wood framed roof structure bears directly upon the framed exterior wall system. The existing
members as installed will require to add 2x6 collar ties @ 24” o.c. @ 1/3 span below the ridge to
ROOF 2 in order to meet the required IRC-2018 design span ratings with sufficient capacity to carry
the 3#/sf additional load imposed by the proposed solar array per the details below.
Installation of solar rack systems shall be as follows:
Each panel row shall be supported upon 2 mounting rails. Rails shall be screw anchored
through roof and directly to rafters or purlins below. Rail attachment points to trusses shall be
staggered each row with exception to the first fastener row from the gable end which is
attached to two adjacent trusses with Stainless Steel fasteners.
Rail attachment to roof shall be fastened 24”o.c. at corners and 48” o.c. through the field.
Rails are to be placed at 24-48” o.c. on the roof.
Solar panel mounting systems installed parallel to the plane of a roof shall be no more
than 12" above the roof when measured perpendicular to the roof surface.
When installed per the above specifications the system shall meet the required 112 MPH wind load and
50 PSF ground snow load requirements.
Should you have any further question or comment please feel free to contact our office.
Respectfully,
James A. Clancy
Professional Engineer
ID License # 12672