Re: [RE-wrenches] Fwd: Re: Cantilevered array
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 < re-wrenches@lists.re-wrenches.org> 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, drake.chamber...@redwoodalliance.org 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 > > 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:re-wrenches-boun...@lists.re-wrenches.org] *On > Behalf Of *Drake Chamberlin via RE-wrenches > *Sent:* Saturday, January 13, 2024 8:47 AM > *To:* RE-wrenches > *Cc:* drake.chamber...@redwoodalliance.org > *Subject:* [RE-wrenches] Fwd: Re: Cantilevered array > > > > > > > > > > > > > > > > > > > > > > Here is a larger snip of the situation. > > > > > > > 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 < > re-wrenches@lists.re-wrenches.org> 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. > > > > > > Notice how the array hangs out over the
Re: [RE-wrenches] Fwd: Re: Cantilevered array
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, drake.chamber...@redwoodalliance.org 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 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 [1] app for IOS for the shading analysis. William Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com [2] CA Lic. 773985 From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Drake Chamberlin via RE-wrenches Sent: Saturday, January 13, 2024 8:47 AM To: RE-wrenches Cc: drake.chamber...@redwoodalliance.org Subject: [RE-wrenches] Fwd: Re: Cantilevered array Here is a larger snip of the situation. 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 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. 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: RE-wrenches@lists.re-wrenches.org 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/re-wrenches@lists.re-wrenches.org/ 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: RE-wrenches@lists.re-wrenches.org 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/re-w
Re: [RE-wrenches] Fwd: Re: Cantilevered array
Hi, in what way? The loading is obviously less, and the clamps are rated for the load. On 2/12/2024 10:56 AM, drake.chamber...@redwoodalliance.org 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 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 <http://www.millersolar.com/> CA Lic. 773985 *From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org <mailto:re-wrenches-boun...@lists.re-wrenches.org>] *On Behalf Of *Drake Chamberlin via RE-wrenches *Sent:* Saturday, January 13, 2024 8:47 AM *To:* RE-wrenches *Cc:* drake.chamber...@redwoodalliance.org <mailto:drake.chamber...@redwoodalliance.org> *Subject:* [RE-wrenches] Fwd: Re: Cantilevered array ** ** ** ** Here is a larger snip of the situation. 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 mailto:re-wrenches@lists.re-wrenches.org>> 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. 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 <http://re-wrenches.org> List Address: RE-wrenches@lists.re-wrenches.org <mailto:RE-wrenches@lists.re-wrenches.org> Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org <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/re-wrenches@lists.re-wrenches.org/ <https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org> List rules & etiquette: http://www.re-wrenches.org/etiquette.htm <http://www.re-wrenches.org/etiquette.htm> Ch
Re: [RE-wrenches] Fwd: Re: Cantilevered array
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 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 [1] app for IOS for the shading analysis. William Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com [2] CA Lic. 773985 From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Drake Chamberlin via RE-wrenches Sent: Saturday, January 13, 2024 8:47 AM To: RE-wrenches Cc: drake.chamber...@redwoodalliance.org Subject: [RE-wrenches] Fwd: Re: Cantilevered array Here is a larger snip of the situation. 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 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. 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: RE-wrenches@lists.re-wrenches.org 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/re-wrenches@lists.re-wrenches.org/ 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: RE-wrenches@lists.re-wrenches.org 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/re-wrenches@lists.re-wrenches.org/ 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 ___ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.or
Re: [RE-wrenches] Fwd: Re: Cantilevered array
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 SimsHttps://EcologicalSystems.org732-462-3858On Jan 19, 2024, at 3:09 PM, Christopher Warfel via RE-wrenches 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 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:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Drake Chamberlin via RE-wrenches Sent: Saturday, January 13, 2024 8:47 AM To: RE-wrenches Cc: drake.chamber...@redwoodalliance.org Subject: [RE-wrenches] Fwd: Re: Cantilevered array Here is a larger snip of the situation. 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
