[RE-wrenches] Extreme snow load ground mount?

2015-01-16 Thread Lars Ortegren 
Wrenches,
I have a fun one for you. We have a couple of potential clients who live in
the high Sierra with a 420 LB design snow load. After hunting around, not
even a three rail system comes close with any module I can find, so now I'm
looking for a pole top that will dump the snow, and still handle 120 mph
winds. Any ideas? I would just say sorry, no solar for you,but like many of
you I love a challenge.

-- 

*Lars Örtegren/ **President*

[image: California Solar Electric Company]


PO Box 480/149 E.Main St
Grass Valley, CA 95945
Phone : (530)274-3671 Fax: (530)274-7518
*California C-10 Electrical Contractor #779624*



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This E-mail may contain CONFIDENTIAL INFORMATION intended only for the use
of the Individual(s) named above.  If you are not the intended recipient of
this E-mail, or the employee or agent responsible for delivering it to the
intended recipient, you are hereby notified that any dissemination or
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E-mail in error, please immediately notify us by telephone at
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[RE-wrenches] Extreme snow load ground mount?

2015-04-27 Thread Dana 
Nice rack!

However if the panels are not rated for more the 100-113 PSF, the design is 
still not acceptable if the AHJ wants 420 PSF right?

Q – What is the stoutest PV module out there?

 



Dana Orzel 

Great Solar Works, Inc -  NABCEP # 051112-136

E - d...@solarwork.com  - Web - solarwork.com 

O - 970.626.5253  C - 208.721.7003

"Responsible Technologies for Responsible People since 1988"  

P Please consider the environment before printing this email.

 

 

From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of Jonathan Hill
Sent: Saturday, April 25, 2015 5:33 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Extreme snow load ground mount?

 

Lars-

What Bill said. Done it several times without incident.

 

Jonathan Hill, senior solar applications engineer
530-559-3781
solar...@gmail.com

 

On Apr 25, 2015, at 12:48 PM, Dana  wrote:

 

What is  the highest PV module snow rating? 113 PSF is the highest I have seen 
I here in CO & ID 100 is the highest required .

 

__

Dana Orzel

Great Solar Works, Inc -  NABCEP # 051112-136

 <mailto:d...@solarwork.com> d...@solarwork.com  -  <http://www.solarwork.com/> 
www.solarwork.com

O - 970.626.5253F - 970.626.4140   c - 208.721.7003

"Responsible Technologies for Responsible People since 1988"  

 

From: RE-wrenches [ <mailto:re-wrenches-boun...@lists.re-wrenches.org> 
mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of  
<mailto:br...@willpowerelect.com> br...@willpowerelect.com
Sent: Saturday, April 25, 2015 1:41 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Extreme snow load ground mount?

 

Would this work for you?

 

 
<http://willpowerelectric.blogspot.com/p/h2e-is-harsh-to-extreme-solution.html> 
http://willpowerelectric.blogspot.com/p/h2e-is-harsh-to-extreme-solution.html

 

 

Bruce Fiero-RMI

 



 

Willpower Electric LLC

4115 S Pacific Hwy

Medford, OR 97501-9103  
  
Phone: 541-535-3965

Fax: 541-512-0061

Email:  <mailto:br...@willpowerelect.com> br...@willpowerelect.com

Web:  <http://www.willpower-electric.com/> www.willpower-electric.com

 

Oregon Electrical Contractor C681

CCB 191852

DUNS 191470363
NABCEP Certified PV

Trade Ally of Energy Trust of Oregon
Oregon Solar Tax Credit Certified Technician

 

 

"I'd put my money on the sun and solar energy. What a source of power! I hope 
we don't have to wait until oil and coal run out before we tackle that." T. 
Edison, 1931

 

---- Original Message 
Subject: Re: [RE-wrenches] Extreme snow load ground mount?
From: "frenergy" < <mailto:frene...@psln.com> frene...@psln.com>
Date: Fri, January 16, 2015 9:17 pm
To: "RE-wrenches" < <mailto:re-wrenches@lists.re-wrenches.org> 
re-wrenches@lists.re-wrenches.org>



Lars,

 

Yes, the only way you can even consider an install like this is a pole 
mount, with a steep tilt in the winter to shed most of the snow.  It would help 
to know if the place will be used in the winter or summer  and how big of an 
array in KW or Sq Ft.  Customer would have to understand that you cannot 
guarantee it...there are some combinations of wind-snow-temp-moisture that make 
snow cling to anything.  If this is permitted, start dropping off cookies to an 
engineer.

 

Bill

Where the Sierra meets the Cascades

- Original Message - 

From:  <mailto:l...@cal-solar.com> Lars Ortegren

To:  <mailto:RE-wrenches@lists.re-wrenches.org> 
RE-wrenches@lists.re-wrenches.org

Sent: Thursday, January 15, 2015 11:30 AM

Subject: [RE-wrenches] Extreme snow load ground mount?

 

Wrenches, 

I have a fun one for you. We have a couple of potential clients who live in the 
high Sierra with a 420 LB design snow load. After hunting around, not even a 
three rail system comes close with any module I can find, so now I'm looking 
for a pole top that will dump the snow, and still handle 120 mph winds. Any 
ideas? I would just say sorry, no solar for you,but like many of you I love a 
challenge.


 

-- 

Lars Örtegren/ President

 <http://www.californiasolarco.com/>  California Solar Electric Company 

PO Box 480/149 E.Main St
Grass Valley, CA 95945
Phone : (530)274-3671 Fax: (530)274-7518
California C-10 Electrical Contractor #779624

  <http://i57.tinypic.com/14w6aac.jpg>   <http://i61.tinypic.com/13znwa8.jpg>   
 

ATTENTION
This E-mail may contain CONFIDENTIAL INFORMATION intended only for the use of 
the Individual(s) named above.  If you are not the intended recipient of this 
E-mail, or the employee or agent responsible for delivering it to the intended 
recipient, you are hereby notified that any dissemination or copying

Re: [RE-wrenches] Extreme snow load ground mount?

2015-01-16 Thread frenergy 
Lars,

Yes, the only way you can even consider an install like this is a pole 
mount, with a steep tilt in the winter to shed most of the snow.  It would help 
to know if the place will be used in the winter or summer  and how big of an 
array in KW or Sq Ft.  Customer would have to understand that you cannot 
guarantee it...there are some combinations of wind-snow-temp-moisture that make 
snow cling to anything.  If this is permitted, start dropping off cookies to an 
engineer.

Bill
Where the Sierra meets the Cascades
  - Original Message - 
  From: Lars Ortegren 
  To: RE-wrenches@lists.re-wrenches.org 
  Sent: Thursday, January 15, 2015 11:30 AM
  Subject: [RE-wrenches] Extreme snow load ground mount?


  Wrenches,
  I have a fun one for you. We have a couple of potential clients who live in 
the high Sierra with a 420 LB design snow load. After hunting around, not even 
a three rail system comes close with any module I can find, so now I'm looking 
for a pole top that will dump the snow, and still handle 120 mph winds. Any 
ideas? I would just say sorry, no solar for you,but like many of you I love a 
challenge.



  -- 

  Lars Örtegren/ President


   

  PO Box 480/149 E.Main St
  Grass Valley, CA 95945
  Phone : (530)274-3671 Fax: (530)274-7518
  California C-10 Electrical Contractor #779624


 


  ATTENTION
  This E-mail may contain CONFIDENTIAL INFORMATION intended only for the use of 
the Individual(s) named above.  If you are not the intended recipient of this 
E-mail, or the employee or agent responsible for delivering it to the intended 
recipient, you are hereby notified that any dissemination or copying this 
E-mail is strictly prohibited.  If you have received this E-mail in error, 
please immediately notify us by telephone at (530)274-3671 or E-mail 
l...@cal-solar.com or cont...@cal-solar.com.








--


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Re: [RE-wrenches] Extreme snow load ground mount?

2015-04-25 Thread bruce 
Would this work for you?http://willpowerelectric.blogspot.com/p/h2e-is-harsh-to-extreme-solution.htmlBruce Fiero-RMIWillpower Electric LLC4115 S Pacific HwyMedford, OR 97501-9103    Phone: 541-535-3965Fax: 541-512-0061Email: br...@willpowerelect.comWeb: www.willpower-electric.comOregon Electrical Contractor C681CCB 191852DUNS 191470363NABCEP Certified PVTrade Ally of Energy Trust of OregonOregon Solar Tax Credit Certified Technician"I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that."  T. Edison, 1931


 Original Message --------
Subject: Re: [RE-wrenches] Extreme snow load ground mount?
From: "frenergy" <frene...@psln.com>
Date: Fri, January 16, 2015 9:17 pm
To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>

   Lars,           Yes, the only way you can even consider an install like this is a pole mount, with a steep tilt in the winter to shed most of the snow.  It would help to know if the place will be used in the winter or summer  and how big of an array in KW or Sq Ft.  Customer would have to understand that you cannot guarantee it...there are some combinations of wind-snow-temp-moisture that make snow cling to anything.  If this is permitted, start dropping off cookies to an engineer.   Bill Where the Sierra meets the Cascades  - Original Message -  From: Lars Ortegren  To: RE-wrenches@lists.re-wrenches.org  Sent: Thursday, January 15, 2015 11:30 AM Subject: [RE-wrenches] Extreme snow load ground mount?  Wrenches, I have a fun one for you. We have a couple of potential clients who live in the high Sierra with a 420 LB design snow load. After hunting around, not even a three rail system comes close with any module I can find, so now I'm looking for a pole top that will dump the snow, and still handle 120 mph winds. Any ideas? I would just say sorry, no solar for you,but like many of you I love a challenge. --Lars Örtegren/ President   PO Box 480/149 E.Main StGrass Valley, CA 95945Phone : (530)274-3671 Fax: (530)274-7518California C-10 Electrical Contractor #779624     ATTENTIONThis E-mail may contain CONFIDENTIAL INFORMATION intended only for the use of the Individual(s) named above.  If you are not the intended recipient of this E-mail, or the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that any dissemination or copying this E-mail is strictly prohibited.  If you have received this E-mail in error, please immediately notify us by telephone at (530)274-3671 or E-mail la...@cal-solar.com or cont...@cal-solar.com.        ___List sponsored by Redwood AllianceList Address: RE-wrenches@lists.re-wrenches.orgChange listserver email address & settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.orgList-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.htmlList rules & etiquette:www.re-wrenches.org/etiquette.htmCheck out or update participant bios:www.members.re-wrenches.org ___
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Re: [RE-wrenches] Extreme snow load ground mount?

2015-04-25 Thread Dana 
What is  the highest PV module snow rating? 113 PSF is the highest I have seen 
I here in CO & ID 100 is the highest required .

 

__

Dana Orzel 

Great Solar Works, Inc -  NABCEP # 051112-136

d...@solarwork.com  - www.solarwork.com 

O - 970.626.5253F - 970.626.4140   c - 208.721.7003

"Responsible Technologies for Responsible People since 1988"  

 

From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of br...@willpowerelect.com
Sent: Saturday, April 25, 2015 1:41 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Extreme snow load ground mount?

 

Would this work for you?

 

http://willpowerelectric.blogspot.com/p/h2e-is-harsh-to-extreme-solution.html

 

 

Bruce Fiero-RMI

 



 

Willpower Electric LLC

4115 S Pacific Hwy

Medford, OR 97501-9103  
  
Phone: 541-535-3965

Fax: 541-512-0061

Email: br...@willpowerelect.com

Web: www.willpower-electric.com

 

Oregon Electrical Contractor C681

CCB 191852

DUNS 191470363
NABCEP Certified PV

Trade Ally of Energy Trust of Oregon
Oregon Solar Tax Credit Certified Technician

 

 

"I'd put my money on the sun and solar energy. What a source of power! I hope 
we don't have to wait until oil and coal run out before we tackle that." T. 
Edison, 1931

 

 Original Message ----
Subject: Re: [RE-wrenches] Extreme snow load ground mount?
From: "frenergy" 
Date: Fri, January 16, 2015 9:17 pm
To: "RE-wrenches" 

 

Lars,

 

Yes, the only way you can even consider an install like this is a pole 
mount, with a steep tilt in the winter to shed most of the snow.  It would help 
to know if the place will be used in the winter or summer  and how big of an 
array in KW or Sq Ft.  Customer would have to understand that you cannot 
guarantee it...there are some combinations of wind-snow-temp-moisture that make 
snow cling to anything.  If this is permitted, start dropping off cookies to an 
engineer.

 

Bill

Where the Sierra meets the Cascades

- Original Message - 

From: Lars Ortegren <mailto:l...@cal-solar.com>  

To: RE-wrenches@lists.re-wrenches.org 

Sent: Thursday, January 15, 2015 11:30 AM

Subject: [RE-wrenches] Extreme snow load ground mount?

 

Wrenches, 

I have a fun one for you. We have a couple of potential clients who live in the 
high Sierra with a 420 LB design snow load. After hunting around, not even a 
three rail system comes close with any module I can find, so now I'm looking 
for a pole top that will dump the snow, and still handle 120 mph winds. Any 
ideas? I would just say sorry, no solar for you,but like many of you I love a 
challenge.


 

-- 

Lars Örtegren/ President

 <http://www.californiasolarco.com/>  California Solar Electric Company 

PO Box 480/149 E.Main St
Grass Valley, CA 95945
Phone : (530)274-3671 Fax: (530)274-7518
California C-10 Electrical Contractor #779624

  <http://i57.tinypic.com/14w6aac.jpg>   <http://i61.tinypic.com/13znwa8.jpg>   
 

ATTENTION
This E-mail may contain CONFIDENTIAL INFORMATION intended only for the use of 
the Individual(s) named above.  If you are not the intended recipient of this 
E-mail, or the employee or agent responsible for delivering it to the intended 
recipient, you are hereby notified that any dissemination or copying this 
E-mail is strictly prohibited.  If you have received this E-mail in error, 
please immediately notify us by telephone at (530)274-3671 or E-mail  
<http://spr...@nabcep.org/> l...@cal-solar.com or cont...@cal-solar.com.

 

 <https://www.facebook.com/CaliforniaSolarElectric>   
<http://www.yelp.com/biz/california-solar-electric-company-grass-valley>  


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Re: [RE-wrenches] Extreme snow load ground mount?

2015-04-25 Thread Jonathan Hill 
Lars-
What Bill said. Done it several times without incident.

Jonathan Hill, senior solar applications engineer
530-559-3781
solar...@gmail.com

> On Apr 25, 2015, at 12:48 PM, Dana  wrote:
> 
> What is  the highest PV module snow rating? 113 PSF is the highest I have 
> seen I here in CO & ID 100 is the highest required .
>  
> __
> Dana Orzel
> Great Solar Works, Inc -  NABCEP # 051112-136
> d...@solarwork.com <mailto:d...@solarwork.com>  - www.solarwork.com 
> <http://www.solarwork.com/>
> O - 970.626.5253F - 970.626.4140   c - 208.721.7003
> "Responsible Technologies for Responsible People since 1988"  
>  
> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org 
> <mailto:re-wrenches-boun...@lists.re-wrenches.org>] On Behalf Of 
> br...@willpowerelect.com <mailto:br...@willpowerelect.com>
> Sent: Saturday, April 25, 2015 1:41 PM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Extreme snow load ground mount?
>  
> Would this work for you?
>  
> http://willpowerelectric.blogspot.com/p/h2e-is-harsh-to-extreme-solution.html 
> <http://willpowerelectric.blogspot.com/p/h2e-is-harsh-to-extreme-solution.html>
>  
>  
> Bruce Fiero-RMI
>  
> 
>  
> Willpower Electric LLC
> 4115 S Pacific Hwy
> Medford, OR 97501-9103
> 
> Phone: 541-535-3965
> Fax: 541-512-0061
> Email: br...@willpowerelect.com <mailto:br...@willpowerelect.com>
> Web: www.willpower-electric.com <http://www.willpower-electric.com/>
>  
> Oregon Electrical Contractor C681
> CCB 191852
> DUNS 191470363
> NABCEP Certified PV
> Trade Ally of Energy Trust of Oregon
> Oregon Solar Tax Credit Certified Technician
>  
>  
> "I'd put my money on the sun and solar energy. What a source of power! I hope 
> we don't have to wait until oil and coal run out before we tackle that." T. 
> Edison, 1931
>  
> 
>>  Original Message 
>> Subject: Re: [RE-wrenches] Extreme snow load ground mount?
>> From: "frenergy" mailto:frene...@psln.com>>
>> Date: Fri, January 16, 2015 9:17 pm
>> To: "RE-wrenches" > <mailto:re-wrenches@lists.re-wrenches.org>>
>> 
>> 
>> Lars,
>>  
>> Yes, the only way you can even consider an install like this is a 
>> pole mount, with a steep tilt in the winter to shed most of the snow.  It 
>> would help to know if the place will be used in the winter or summer  and 
>> how big of an array in KW or Sq Ft.  Customer would have to understand that 
>> you cannot guarantee it...there are some combinations of 
>> wind-snow-temp-moisture that make snow cling to anything.  If this is 
>> permitted, start dropping off cookies to an engineer.
>>  
>> Bill
>> Where the Sierra meets the Cascades
>>> - Original Message - 
>>> From: Lars Ortegren <mailto:l...@cal-solar.com>
>>> To: RE-wrenches@lists.re-wrenches.org 
>>> <mailto:RE-wrenches@lists.re-wrenches.org>
>>> Sent: Thursday, January 15, 2015 11:30 AM
>>> Subject: [RE-wrenches] Extreme snow load ground mount?
>>>  
>>> Wrenches, 
>>> I have a fun one for you. We have a couple of potential clients who live in 
>>> the high Sierra with a 420 LB design snow load. After hunting around, not 
>>> even a three rail system comes close with any module I can find, so now I'm 
>>> looking for a pole top that will dump the snow, and still handle 120 mph 
>>> winds. Any ideas? I would just say sorry, no solar for you,but like many of 
>>> you I love a challenge.
>>>  
>>> -- 
>>> Lars Örtegren/ President
>>>  <http://www.californiasolarco.com/> 
>>> PO Box 480/149 E.Main St
>>> Grass Valley, CA 95945
>>> Phone : (530)274-3671 Fax: (530)274-7518
>>> California C-10 Electrical Contractor #779624
>>>
>>> ATTENTION
>>> This E-mail may contain CONFIDENTIAL INFORMATION intended only for the use 
>>> of the Individual(s) named above.  If you are not the intended recipient of 
>>> this E-mail, or the employee or agent responsible for delivering it to the 
>>> intended recipient, you are hereby notified that any dissemination or 
>>> copying this E-mail is strictly prohibited.  If you have received this 
>>> E-mail in error, please immediately notify us by telephone at (530)274-3671 
>>> or E-mail l <http://spr...@nabcep.org/>a...@cal-solar.co

Re: [RE-wrenches] Extreme snow load ground mount?

2015-04-27 Thread Ray Walters 
Gravity only acts downward.  The modules are rated to 113 PSF which is 
with the module laying flat.  If the module is at an angle, it can take 
more downward force.
For instance if it is at 70 degree tilt, It could take a downward force 
of 113 PSF / cos 70  or 330 PSF.
Its possibly reasonable to assume that the snow might not slide off, but 
the total snow load is not going to act perpendicular to a tilted module.
If the AHJ wants to argue the point, ask him what the snow load 
requirements are against a surface of a wall.  A vertical surface would 
only see wind loading, not snow loading.


R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 4/26/2015 2:32 PM, Dana wrote:


Nice rack!

However if the panels are not rated for more the 100-113 PSF, the 
design is still not acceptable if the AHJ wants 420 PSF right?


Q – What is the stoutest PV module out there?



Dana Orzel

Great Solar Works, Inc -  NABCEP # 051112-136

E - d...@solarwork.com  - Web - solarwork.com

O - 970.626.5253  C - 208.721.7003

"Responsible Technologies for Responsible People since 1988"

*P*Please consider the environment before printing this email.

*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] 
*On Behalf Of *Jonathan Hill

*Sent:* Saturday, April 25, 2015 5:33 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Extreme snow load ground mount?

Lars-

What Bill said. Done it several times without incident.

Jonathan Hill, senior solar applications engineer
530-559-3781
solar...@gmail.com <mailto:solar...@gmail.com>

On Apr 25, 2015, at 12:48 PM, Dana mailto:d...@solarwork.com>> wrote:

What is  the highest PV module snow rating? 113 PSF is the highest
I have seen I here in CO & ID 100 is the highest required .

__

*Dana Orzel*

Great Solar Works, Inc - *NABCEP # 051112-136*

d...@solarwork.com <mailto:d...@solarwork.com> -www.solarwork.com
<http://www.solarwork.com/>

*O*- 970.626.5253 *F*- 970.626.4140   c*-*208.721.7003

*_"Responsible Technologies for Responsible People since 1988_**_" _*

*From:*RE-wrenches
[mailto:re-wrenches-boun...@lists.re-wrenches.org]*On Behalf
Of*br...@willpowerelect.com <mailto:br...@willpowerelect.com>
*Sent:*Saturday, April 25, 2015 1:41 PM
*To:*RE-wrenches
    *Subject:*Re: [RE-wrenches] Extreme snow load ground mount?

Would this work for you?


http://willpowerelectric.blogspot.com/p/h2e-is-harsh-to-extreme-solution.html

Bruce Fiero-RMI



*Willpower Electric LLC*

4115 S Pacific Hwy

Medford, OR 97501-9103
*Phone:*541-535-3965

*Fax:*541-512-0061

*Email:*br...@willpowerelect.com <mailto:br...@willpowerelect.com>

*Web:*www.willpower-electric.com <http://www.willpower-electric.com/>

Oregon Electrical Contractor C681

CCB 191852

DUNS 191470363
NABCEP Certified PV

Trade Ally of Energy Trust of Oregon
Oregon Solar Tax Credit Certified Technician

*"I'd put my money on the sun and solar energy. What a source of
power! I hope we don't have to wait until oil and coal run out
before we tackle that." T. Edison, 1931*

    ---- Original Message 
Subject: Re: [RE-wrenches] Extreme snow load ground mount?
From: "frenergy" mailto:frene...@psln.com>>
Date: Fri, January 16, 2015 9:17 pm
To: "RE-wrenches" mailto:re-wrenches@lists.re-wrenches.org>>



Lars,

Yes, the only way you can even consider an install like
this is a pole mount, with a steep tilt in the winter to shed
most of the snow.  It would help to know if the place will be
used in the winter or summer  and how big of an array in KW or
Sq Ft. Customer would have to understand that you cannot
guarantee it...there are some combinations of
wind-snow-temp-moisture that make snow cling to anything.  If
this is permitted, start dropping off cookies to an engineer.

Bill

Where the Sierra meets the Cascades

- Original Message -

*From:*Lars Ortegren <mailto:l...@cal-solar.com>

*To:*RE-wrenches@lists.re-wrenches.org
    <mailto:RE-wrenches@lists.re-wrenches.org>

*Sent:*Thursday, January 15, 2015 11:30 AM

*Subject:*[RE-wrenches] Extreme snow load ground mount?

Wrenches,

I have a fun one for you. We have a couple of potential
clients who live in the high Sierra with a 420 LB design
snow load. After hunting around, not even a three rail
system comes close with any module

Re: [RE-wrenches] Extreme snow load ground mount?

2015-04-27 Thread Glenn Burt 
I have seen published an adjustment factor used when calculating pitched roof 
snow loads that is used to modify the published flat snow load value.
Can't put my finger on it right now, but you could probably get more 
information with an intern search.
I have used it on ground mount calculations.

Sincerely,
Glenn Burt
Sent from my 'smart' phone so please excuse grammar and typos.

-Original Message-
From: "Ray Walters" 
Sent: ‎4/‎27/‎2015 12:33
To: "d...@solarwork.com" ; "RE-wrenches" 

Subject: Re: [RE-wrenches] Extreme snow load ground mount?

Gravity only acts downward.  The modules are rated to 113 PSF which is 
with the module laying flat.  If the module is at an angle, it can take 
more downward force.
For instance if it is at 70 degree tilt, It could take a downward force 
of 113 PSF / cos 70  or 330 PSF.
Its possibly reasonable to assume that the snow might not slide off, but 
the total snow load is not going to act perpendicular to a tilted module.
If the AHJ wants to argue the point, ask him what the snow load 
requirements are against a surface of a wall.  A vertical surface would 
only see wind loading, not snow loading.

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 4/26/2015 2:32 PM, Dana wrote:
>
> Nice rack!
>
> However if the panels are not rated for more the 100-113 PSF, the 
> design is still not acceptable if the AHJ wants 420 PSF right?
>
> Q – What is the stoutest PV module out there?
>
> 
>
> Dana Orzel
>
> Great Solar Works, Inc -  NABCEP # 051112-136
>
> E - d...@solarwork.com  - Web - solarwork.com
>
> O - 970.626.5253  C - 208.721.7003
>
> "Responsible Technologies for Responsible People since 1988"
>
> *P*Please consider the environment before printing this email.
>
> *From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] 
> *On Behalf Of *Jonathan Hill
> *Sent:* Saturday, April 25, 2015 5:33 PM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] Extreme snow load ground mount?
>
> Lars-
>
> What Bill said. Done it several times without incident.
>
> Jonathan Hill, senior solar applications engineer
> 530-559-3781
> solar...@gmail.com <mailto:solar...@gmail.com>
>
> On Apr 25, 2015, at 12:48 PM, Dana  <mailto:d...@solarwork.com>> wrote:
>
> What is  the highest PV module snow rating? 113 PSF is the highest
> I have seen I here in CO & ID 100 is the highest required .
>
> __
>
> *Dana Orzel*
>
> Great Solar Works, Inc - *NABCEP # 051112-136*
>
> d...@solarwork.com <mailto:d...@solarwork.com> -www.solarwork.com
> <http://www.solarwork.com/>
>
> *O*- 970.626.5253 *F*- 970.626.4140   c*-*208.721.7003
>
> *_"Responsible Technologies for Responsible People since 1988_**_" _*
>
> *From:*RE-wrenches
>     [mailto:re-wrenches-boun...@lists.re-wrenches.org]*On Behalf
> Of*br...@willpowerelect.com <mailto:br...@willpowerelect.com>
> *Sent:*Saturday, April 25, 2015 1:41 PM
> *To:*RE-wrenches
> *Subject:*Re: [RE-wrenches] Extreme snow load ground mount?
>
> Would this work for you?
>
> 
> http://willpowerelectric.blogspot.com/p/h2e-is-harsh-to-extreme-solution.html
>
> Bruce Fiero-RMI
>
> 
>
> *Willpower Electric LLC*
>
> 4115 S Pacific Hwy
>
> Medford, OR 97501-9103
> *Phone:*541-535-3965
>
> *Fax:*541-512-0061
>
> *Email:*br...@willpowerelect.com <mailto:br...@willpowerelect.com>
>
> *Web:*www.willpower-electric.com <http://www.willpower-electric.com/>
>
> Oregon Electrical Contractor C681
>
> CCB 191852
>
> DUNS 191470363
>     NABCEP Certified PV
>
>     Trade Ally of Energy Trust of Oregon
> Oregon Solar Tax Credit Certified Technician
>
> *"I'd put my money on the sun and solar energy. What a source of
> power! I hope we don't have to wait until oil and coal run out
> before we tackle that." T. Edison, 1931*
>
>  Original Message 
> Subject: Re: [RE-wrenches] Extreme snow load ground mount?
> From: "frenergy" mailto:frene...@psln.com>>
> Date: Fri, January 16, 2015 9:17 pm
> To: "RE-wrenches"  <mailto:re-wrenches@lists.re-wrenches.org>>
>
> 
>
> Lars,
>
> Yes, the only way you can even consider an install like
> this is a pole m