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

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 09-17-2011, 07:10 AM   #1
Newbie
 
Join Date: Sep 2011
Posts: 3
Rewards Points: 10
Default

Joist spans- please help


Hello,
I'm building a 15'x15' roof over a patio. I'm using 6"x6"x8' posts and 2-2x8's screwed together for beams. The joist span is 14'. I was told by a local inspector to use 3"x8" s every 16"oc to span that but it seems like alot of weight. I'm worried it will sag over time. Thoughts?

RyanJ is offline   Reply With Quote
Old 09-17-2011, 07:20 AM   #2
Civil Engineer
 
Join Date: Mar 2009
Location: Boston
Posts: 4,252
Rewards Points: 2,082
Default

Joist spans- please help


There must be some confusion about your project. If you are simply building a roof, using 3"x8" lumber for joists makes no sense for a 14 foot span. Not that the weight will cause the joist to sag, it won't, but 3x8 @ 16" OC is dramatic overkill for a simple roof. Either you misunderstood the instructions of the building inspector, or he misunderstood your project, or there is something else going on you have left out, like maybe your roof is supporting earth? I suggest you revisit the inspector with a set of plans and discuss the project again.

Daniel Holzman is online now   Reply With Quote
Old 09-17-2011, 07:20 AM   #3
Member
 
Join Date: Mar 2007
Location: Long Island, NY
Posts: 9,519
Rewards Points: 2,000
Default

Joist spans- please help


The building inspector's opinion is the one you need to listen to.
I would have asked about 2x10's for the span.
What sort of roof design is going on this?
__________________
Ron
"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety."
B. Franklin 1759
Ron6519 is offline   Reply With Quote
Old 09-17-2011, 07:28 AM   #4
Newbie
 
Join Date: Sep 2011
Posts: 3
Rewards Points: 10
Default

Joist spans- please help


The roof will have 1/2" plywood with vulkem epoxy and the ceiling will have 1/2" durock. The whole structure is getting covered with durock and plastered. Thanx
RyanJ is offline   Reply With Quote
Old 09-17-2011, 07:30 AM   #5
Newbie
 
Join Date: Sep 2011
Posts: 3
Rewards Points: 10
Default

Joist spans- please help


And it's non-load bearing, however it is in a hurricane zone.
RyanJ is offline   Reply With Quote
Old 09-17-2011, 08:02 AM   #6
Framing Contractor
 
Join Date: Apr 2006
Location: Caldwell, NJ
Posts: 1,758
Rewards Points: 1,000
Default

Joist spans- please help


Quote:
Originally Posted by RyanJ View Post
The roof will have 1/2" plywood with vulkem epoxy and the ceiling will have 1/2" durock. The whole structure is getting covered with durock and plastered. Thanx
What kind of roof is it...hip roof, gable, shed?

__________________
Joe Carola
Joe Carola is offline   Reply With Quote
The Following User Says Thank You to Joe Carola For This Useful Post:
Ron6519 (09-17-2011)
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Dryer duct hole thru band joist & floor joist justplumducky General DIY Discussions 12 10-05-2010 12:31 PM
Supporting joist under cracked tile JT31 Building & Construction 2 08-26-2010 08:00 AM
Jacking and Sistering Floor Joist Captain.Sassy Building & Construction 17 08-11-2010 01:30 PM
floor joist spans Gray Building & Construction 6 06-24-2010 08:37 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.