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Old 02-13-2008, 12:00 AM   #1
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Roof over new deck


I'm in the process of building a new deck and the other day I saw a roof style that I liked. It was made of corregated translucent fiberglass supported by redwood 2x6 rafters, 24" o.c. Over my deck, this covering would be attached to the house and extend out about 8'. What size beam and post spacing would I need to support the outer part? I haven't been able to find any span tables that apply to this. Could a 4x6 doug fir beam with posts spaced 10' apart hold it up. I would like to minimize the lumber blocking the view. If I can't reasonably set the posts 10' apart in a couple sections, I'll have to add extra posts all the way to the ground, around 18'.

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Old 02-13-2008, 09:48 AM   #2
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A good start to help answer your question is to give your location,so loads(snow/wind) can be determined.

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Old 02-13-2008, 10:20 AM   #3
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I'm located in the San Francisco Bay Area. At my location we don't get any snow or extreme weather. One or two days a year the wind might get up to 50mph. I'm guessing holding it down might be more of an issue than holding it up. My house is sitting on hillside.
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Old 02-13-2008, 10:36 AM   #4
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Quote:
Originally Posted by ovahimba View Post
I'm located in the San Francisco Bay Area. At my location we don't get any snow or extreme weather. One or two days a year the wind might get up to 50mph. I'm guessing holding it down might be more of an issue than holding it up. My house is sitting on hillside.
I'm not familiar with the codes or practices there,but a good point to start is be by observing local trends in materials,like you've already done.
Like you say,holding it down may be your biggest concern ,so go with a good quality material.
Onduline used to have some decent panels.Maybe you can get omne ideas here.
http://www.onduline.com/anglais/onduline.php

Anyways,
I'm sure someone in your area will be along to set you on the right path here.

Last edited by oldfrt; 02-13-2008 at 10:38 AM.
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Old 02-13-2008, 01:32 PM   #5
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Roof over new deck


You could skim this article too...

http://www.naturalhandyman.com/iip/i...oofpanels.html
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