Maximum Shed Rafter Length Span - Building & Construction - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 01-18-2012, 02:58 PM   #1
Newbie
 
Join Date: Apr 2009
Posts: 20
Rewards Points: 10
Default

Maximum shed rafter length span


So, I am attempting to build a cabin with a shed-style roof.
I intend to build the cabin to a size of 16'x 36'.

The walls are 2x6 with a double top plate of course, the floor 2x8 with 3/4 inch plywood sheathing, and the rafters shall be 2x10, to allow for r-35 insulation.

What I need to know is what is the maximum length the 2x10 rafter can span without the need for support mid-span.

So, the question is: can a shed style roof with 2x10 rafters span the 16 foot wide structure without the need for any supports in the middle?

Advertisement

wwsteel7 is offline   Reply With Quote
Old 01-18-2012, 03:03 PM   #2
Member
 
Join Date: Dec 2011
Location: B.C. Canada
Posts: 2,055
Rewards Points: 1,030
Default

Maximum shed rafter length span


Depends on pitch of roof and roof/snow load.

Make sure you have air flow above your insulation in the roof. Has to come in the bottom and go out the top.

Advertisement

mae-ling is offline   Reply With Quote
Old 01-18-2012, 03:06 PM   #3
Newbie
 
Join Date: Apr 2009
Posts: 20
Rewards Points: 10
Default

Maximum shed rafter length span


the pitch is 3-12, and the roof load should be 40 psf
wwsteel7 is offline   Reply With Quote
Old 01-18-2012, 03:16 PM   #4
Member
 
Join Date: Dec 2011
Location: B.C. Canada
Posts: 2,055
Rewards Points: 1,030
Default

Maximum shed rafter length span


Here is a simplified span table. http://www.wclib.org/pdfs/SimpSpanTbls.pdf
I would go with no less then #2 fir, prefer #1 fir. Watch out for knots that might cause a weak point.
mae-ling is offline   Reply With Quote
Old 01-18-2012, 07:44 PM   #5
Disabled wood vet
 
titanoman's Avatar
 
Join Date: Nov 2011
Location: California
Posts: 1,646
Rewards Points: 1,000
Default

Maximum shed rafter length span


I would think you could span that far with 2x10 but you should see what local codes call for.
titanoman is offline   Reply With Quote
Old 01-18-2012, 08:37 PM   #6
Residential Designer
 
AndyGump's Avatar
 
Join Date: Sep 2010
Location: Orange County CA.
Posts: 1,317
Rewards Points: 550
Send a message via Skype™ to AndyGump
Default

Maximum shed rafter length span


Try THIS link.

Andy.

Advertisement

AndyGump is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rafter tie adjustment albanello Building & Construction 10 11-20-2010 11:26 PM
Wiring a Shed and Garage abedj Electrical 1 05-08-2009 12:09 PM
Shed style porch rafter span and spacing sjjacks Building & Construction 3 05-05-2009 07:17 PM
Joist, rafter, and stud spacing for shed? Badfish740 Building & Construction 2 10-27-2008 05:12 PM
Shed Wiring bcdal Electrical 12 03-26-2008 05:51 PM




Top of Page | View New Posts