Good question about rain shedding. My questions for Sky: were the installations evaluated by a structural engineer to calculate ability to withstand wind effects and snow load? What roof anchors were recommended?
William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Tue, Feb 13, 2024 at 7:55 AM Drake Chamberlin via RE-wrenches < [email protected]> wrote: > If the array covers the rain gutters, doesn't that prevent the gutters > from catching rain? Doesn't the edge of the extended modules form a drip > edge, where water will not be diverted by the gutters, but hit the ground > directly? > > Will the gutters be accessible for future maintenance? > > > *Drake Chamberlin* > > *Athens Electric LLC* > > *Ohio Electrical Contractor’s License 44810* > > *NABCEP Certified PV Installation Professional* > --- > > > > On 2024-02-12 11:02, Christopher Warfel wrote: > > Hi, in what way? The loading is obviously less, and the clamps are rated > for the load. > On 2/12/2024 10:56 AM, [email protected] wrote: > > How do you deal with the rain gutters? > > > Drake Chamberlin > > Media & Communication Action Project > > https://m-cap.org/ > --- > > > > On 2024-02-08 16:46, Sky Sims via RE-wrenches wrote: > > I've designed and installed several thousand cantilevered arrays over the > last three decades and never had a single issue. Unfortunately, code > changes have taken a turn for the worse in most jurisdictions and > oftentimes disallow cantilevering. > > Sky Sims > Https://EcologicalSystems.org > 732-462-3858 > > On Jan 19, 2024, at 3:09 PM, Christopher Warfel via RE-wrenches > <[email protected]> <[email protected]> > wrote: > > I've done a fair amount of roof mounted solar structural compliance, and > I would say that the cantilevered design looks like a disaster waiting to > happen. You could not use conventional solar racking products. Chris > > > > On 1/13/2024 12:42 PM, William Miller via RE-wrenches wrote: > > Drake > > > > My earlier reply may have been a bit facetious. What I meant by it was > that big-box solar contractors can be lazy when it comes to solar design. > They will rely totally on satellite imagery and not check the design on the > ground. This is how you get solar proposed for shaded areas, where > skylights and roof vents are located, or overhanging thin air. This may be > what is happening in the image you shared. > > > > What is unique here is someone actually specified overhanging panels. > Looking more closely at the image, a roof outline is shown but it is not > clear that the outline is actually situated over a building. It almost > looks like there is landscaped area inside the outline. > > > > The solution of course is to get on out there, measure the roof and any > obstructions and analyze the shading. I use the Sun Seeker > <https://apps.apple.com/us/app/sun-seeker-tracker-surveyor/id330247123> > app for IOS for the shading analysis. > > > > William > > > > Miller Solar > > 17395 Oak Road, Atascadero, CA 93422 > > 805-438-5600 > > www.millersolar.com > > CA Lic. 773985 > > > > > > *From:* RE-wrenches [mailto:[email protected]] *On > Behalf Of *Drake Chamberlin via RE-wrenches > *Sent:* Saturday, January 13, 2024 8:47 AM > *To:* RE-wrenches > *Cc:* [email protected] > *Subject:* [RE-wrenches] Fwd: Re: Cantilevered array > > > > > > > > > > > > > > > > > > > > > > Here is a larger snip of the situation. > > > > > <image001.png> > > Label says overhang from upper roof. > > > > *Drake Chamberlin* > > *Athens Electric LLC* > > *Ohio Electrical Contractor's License 44810* > > *NABCEP Certified PV Installation Professional* > > > > --- > > > > > > On 2024-01-12 07:29, Jason Szumlanski wrote: > > Are you sure that's what you're looking at? To me, that looks like there > was an addition made to the house, and maybe it's a multi-pitch roof. That > lower part might be a covered wrap-around porch. > > > Jason Szumlanski > > Principal Solar Designer | Florida Solar Design Group > NABCEP Certified Solar Professional (PVIP) > Florida State Certified Solar Contractor CVC56956 > > > > On Thu, Jan 11, 2024 at 5:59 PM Drake Chamberlin via RE-wrenches < > [email protected]> wrote: > > I was given a drawing, produced by a very large solar company, showing the > array cantilevered over the edge of the roof by several feet. > > <image002.png> > > > > Notice how the array hangs out over the lawn for several feet. Is there > anyway that this is a legitimate way to mount modules? > > > > Thanks, > > > > Drake > > > > *Drake Chamberlin* > > *Athens Electric LLC* > > *Ohio Electrical Contractor's License 44810* > > *NABCEP Certified PV Installation Professional* > > > > -- > > > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & > settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other:https://www.mail-archive.com/[email protected]/http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette:http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios:http://www.members.re-wrenches.org > > -- > Christopher Warfel > ENTECH Engineering, Inc. > PO Box 871, Block Island, RI 02807 > 401-466-8978 > <EEIlogolong.jpg> > > > > <cwarfel.vcf> > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > -- > Christopher Warfel > ENTECH Engineering Inc. > PO Box 871, Block Island, RI 02807 > 401-477-5773 > [image: EE Logo] <https://entech-engineering.com/Home/default.php> > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. 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