HomeMy WebLinkAbout20190605 Retrofit PV Structural Certification Letter_FL August 04, 2020
Re: Tesla Retrofit PV Structure Qualification Certification Letter
Tesla's Retrofit PV product is an assembly consisting of Tesla mounting hardware for comp
shingle or tile roof coverings and PV modules using the Zep Compatible frame. Please refer to
the product data sheets, UL listing, and installation documentation for further information.
The Tesla Retrofit PV assembly does not exceed 3.5psf. Installation of the Tesla Retrofit PV
assembly offsets load in areas of the roof designed to support a roof live load and provides a
lower-friction surface than the existing roof. The weight of the offset live load or difference in
accumulated roof snow load as a result of reduced surface friction (in regions where the roof
snow load is greater than the roof live load) will exceed the weight of the PV assembly.
Consequently, the net additional loading impact to existing gravity load resisting elements is
less than 5% for the framing of pitched roof structures with existing roofing material comprised
of comp shingle or tile. Note that this assessment does not apply to structures with existing
metal roof coverings in regions where roof snow load is greater than roof live load.
I certify that installation of the Tesla Retrofit PV assembly on existing structures with: a) existing
roofing material comprised of comp shingle or tile roof coverings and b)with no existing
structural damage; meets the criteria outlined in Section 403 of the IEBC (alterations to existing
structures) and is therefore permitted by code without alterations or strengthening of the existing
framing.
Digitally signed by Nick
Gordon
Nick Gordon Date:2020.08.04 12:20:08
-07'00'
Nick Gordon, P.E.
Associate Manager, Professional Engineering, Tesla
ngordonp_tesla.com
Licenses: AZ, CO, CT, FL, MA, MD, MI, NH, NV, NY, OR, PA, RI, SC, TX &VT
T = 5 L n Tesla, Inc.
3500 Deer Creek, Palo Alto,CA 94304