6' x 10' deck- Should beams or joists run lengthwise?


  #1  
Old 06-27-12, 06:00 AM
M
Member
Thread Starter
Join Date: Jan 2008
Location: West of Chicago
Posts: 355
Upvotes: 0
Received 1 Upvote on 1 Post
6' x 10' deck- Should beams or joists run lengthwise?

I am building a simple front deck that is 34" high. It is freestanding on 4 posts. The deck surface will be about 6' x 10' and the posts will be spaced at about 4 feet wide and about 8' long.
The 6' side is what is abutts the house entry door, and the stairs will turn 90* and step down towards the driveway.

My question is which way to run the beams/joists/decking? Should I use 6' beams and 10' joists, resulting in the deckboards being paralell to the house?

I'm not sure which is better visually, but I am more conserned with stability of the frame work. What do you all think?
 
  #2  
Old 06-27-12, 08:15 AM
S
Group Moderator
Join Date: Oct 2004
Location: WI/MN
Posts: 20,236
Received 1,182 Upvotes on 1,140 Posts
Personally, I think the decking being parallel to the house would look better.
 
  #3  
Old 06-27-12, 10:06 AM
M
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 49,399
Received 722 Upvotes on 633 Posts
6' long joists should be stronger than 10' long ones.... or put another way, you could get by with a smaller dimension floor joist going the short way.
 
  #4  
Old 06-27-12, 10:07 AM
M
Member
Thread Starter
Join Date: Jan 2008
Location: West of Chicago
Posts: 355
Upvotes: 0
Received 1 Upvote on 1 Post
Its looking like I'll probably go that way. Differance in cost between the two in lumber is only like 10 bucks and going parrel to the house means a few less joist hangers, ect.

But really its about the same cost. Unless someone has a reason to go the other way, I'll go with deck boards running paralell to the house. making my beams 6' long on 4" post centers with 10' joists.

Thanks
 
  #5  
Old 06-27-12, 02:18 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,964
Upvotes: 0
Received 9 Upvotes on 8 Posts
If you run your joists in the 10' direction you may have to use 2x8's as 2x6's only span about 9'6". Check with your inspector to see what he will allow you to use. Use joist hangers, naturally. I agree with the others, planks parallel to the house will look better.
 
  #6  
Old 06-27-12, 03:20 PM
M
Member
Thread Starter
Join Date: Jan 2008
Location: West of Chicago
Posts: 355
Upvotes: 0
Received 1 Upvote on 1 Post
OK, I went and drew it both ways to add up the lumber. Its really close in cost so that doesn't sway me.

But no general rules saying for example "joists should always be longer than beams" or something to similar effect? OK then!

So thanks you guys. I'm going to go w/ decking paralell to the house. 10' joists and 6' beams.
 
  #7  
Old 06-28-12, 01:54 PM
BridgeMan45's Avatar
Member
Join Date: Oct 2011
Location: USA
Posts: 3,194
Upvotes: 0
Received 1 Upvote on 1 Post
Or you could show your artistic side, and run the deck planks at a 45-degree angle. More work and more waste, but definitely worth it in my humble opinion.
 
  #8  
Old 06-28-12, 02:18 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,964
Upvotes: 0
Received 9 Upvotes on 8 Posts
Your opinion is golden, bridge. I like that idea a lot. I just finished a deck, really two decks with angular decking. Really gotta figure close and yes, you will have more waste, but the final product will make a statement.
 
  #9  
Old 06-28-12, 03:23 PM
M
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 49,399
Received 722 Upvotes on 633 Posts
Ya, the angled decking does look sharp!

final product will make a statement
.
My problem would be the statement it made in my checkbook
 
  #10  
Old 06-28-12, 10:01 PM
BridgeMan45's Avatar
Member
Join Date: Oct 2011
Location: USA
Posts: 3,194
Upvotes: 0
Received 1 Upvote on 1 Post
marksr--if a few more deck planks would impact your checkbook that much, maybe you should consider eating more cold cereal for breakfast. By not duplicating diagonal end-cuts in the corners (i.e., using the drops in the opposite corner), very little extra waste would result. All of his field members will be cut-down 10-footers, which is what he would be using if he runs them full-length, parallel to the house.
 
  #11  
Old 06-29-12, 09:29 AM
M
Member
Thread Starter
Join Date: Jan 2008
Location: West of Chicago
Posts: 355
Upvotes: 0
Received 1 Upvote on 1 Post
Well we'll probably just go with straight decking parallel to the house. I have shorten the length down to 8', so 2x6 joists and 2x8 beams (or I can use 2-2x6 to make the beams).

What extra framing is needed to do the 45* decking?
 
  #12  
Old 06-29-12, 05:03 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,964
Upvotes: 0
Received 9 Upvotes on 8 Posts
I think you may be confusing a term or two. Beams go under your joisting. I think you are meaning rim joists, that surround the deck joists. If you drop to 8' you can use 2x6 joists with no problem. No additional framing is needed for angular decking, just a good 12" miter saw to cut the angles repeatedly accurate. This is the reason for the waste. You will be cutting the decking where it ends over a joist, and may have a foot or two left over that just won't reach the next joist.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: