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


Thread Tools Search this Thread Display Modes
Old 05-01-2010, 10:30 AM   #1
waterman1971's Avatar
Join Date: Apr 2009
Posts: 161
Share |

Garage build

Garage build-framework.jpg

What would yall recommend for the supporting beams marked in red? The beams span 20'. I was thinking double 2x12 with plywood. Any other ideas? Posts are on 6' centers.

waterman1971 is offline   Reply With Quote
Old 05-01-2010, 11:21 AM   #2
Civil Engineer
Join Date: Mar 2009
Location: Boston
Posts: 4,165

Garage build

The beams in question need to support half the garage roof live load, plus dead load of framing, plus wind load and seismic load if applicable. Your local code should tell you the required loading. You can also get the required information from your local code enforcement official (you are pulling a permit, right?).

You should also look at the requirements for attachment of the beam to the support posts. And while you are at it, you should review the requirements for embedment of the support posts, and minimum sizing of the support posts. Assuming you have not done so already.

By the way, nice drawing.

Daniel Holzman is offline   Reply With Quote
Old 05-01-2010, 11:25 AM   #3
Join Date: Jul 2007
Posts: 1,564

Garage build

If that's all the structure a good wind will topple that garage right over. Your going to need lateral bracing. Is the full 20' end goiing to be open?

Why beams every 6'? Good trusses will span the 24' without intermediate beams. If you'll stick frame and/or put load in the attic or occupy it then you might need 1 or 2 intermediate beams depending on the ceiling joist size.

Beam size really needs to be calculated by an engineer or use of prescriptive tables depending on location and construction details.
jogr is offline   Reply With Quote
Old 05-01-2010, 11:34 AM   #4
waterman1971's Avatar
Join Date: Apr 2009
Posts: 161

Garage build

The structure is attached on 1 side. I want the beams so i can better utilize the space above. I created the "trusses" as a component in the rendering. They are for reference purposes only.Traditional plywood decking and composition roofing on top. Plywood sheathing on the sides may increase lateral stability. Thanks for the help guys.
waterman1971 is offline   Reply With Quote

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
want to build corner shelf for 27" tv in garage bowanna03 General DIY Discussions 2 07-08-2009 06:09 AM
new double garage murray1426 Building & Construction 4 05-23-2009 01:11 PM
Challenge: Build a wall in front of Garage door pink toolbelt Building & Construction 4 11-12-2008 02:19 PM
Adding on to house to build a garage. Ohioguy Building & Construction 5 02-09-2008 04:44 AM
Frost Build Up On Interior Garage Wall richw Building & Construction 8 01-06-2008 09:47 AM

Top of Page | View New Posts

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