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Old 05-03-2012, 10:20 AM   #16
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A long time ago, in a place far away, a 2x4 was actually 2 inches wide and 4 inches deep. These types of lumber are now referred to as full size, and are generally unavailable except by special order, or if you mill them yourself. The standard dressed sizes for softwood lumber can be found on this website:
http://www.engineeringtoolbox.com/so...ns-d_1452.html

and typically a 2x4 is in fact only 1-1/2 inches x 3-1/2 inches.

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Old 01-07-2017, 05:15 PM   #17
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Re: using 2x4's for joists


I guess I need one post to post links.... so see next post
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Old 01-07-2017, 08:54 PM   #18
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Re: using 2x4's for joists


Quote:
Originally Posted by Daniel Holzman View Post
A long time ago, in a place far away, a 2x4 was actually 2 inches wide and 4 inches deep. These types of lumber are now referred to as full size, and are generally unavailable except by special order, or if you mill them yourself. The standard dressed sizes for softwood lumber can be found on this website
And if the inspector noticed, they might ask for proof of species or an engineer's report.
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Old 01-07-2017, 09:43 PM   #19
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Re: using 2x4's for joists


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Originally Posted by Joe Carola View Post
The answer.is no. Anyone here who tells you that.you can has no idea what they are talking about and giving you useless and dangerous information.

All you have to do is call your building department and ask them.
wow Joe. tell us you really feel. Maybe you should ask whether he is talking FLOOR or CEILING joists???? And I only say that because I spent a few hours freezing my butt off today installing two bye four bye six foot CEILING joists @16" on center as SPECIFIED by the signed engineering drawings for the job AND approved by the local inspector.

Perhaps a bit less judgmental? Ron
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Old 01-08-2017, 03:30 PM   #20
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Re: using 2x4's for joists


2x4s for floor joists is just stupid.. if your framing a shed and just want to create some storage up in the rafters sure run some 2x4 ceiling joists which you can lay stuff across... but for a floor no
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Old 01-08-2017, 03:41 PM   #21
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Re: using 2x4's for joists


I don't think Joe is on the forum now days, this thread was back in 2012. Just sayin.
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Old 01-08-2017, 08:02 PM   #22
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Re: using 2x4's for joists


lol gotcha.. thats why i like www.bethepro.com we close down threads that are 6 months old or when they hit 1000 posts we close it and only the one who opened it can start a new thread under the same topic..
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Old 01-08-2017, 11:38 PM   #23
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Re: using 2x4's for joists


Nice... I bet they require a location from posters there... at least a State, lol. 4 other DIY sites I visit require it and it doesn't seem to upset new members much- though who knows how many leave there to come here, where we can give 10 answers --then ask their location...lol. Gary
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Old 01-09-2017, 11:36 AM   #24
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Re: using 2x4's for joists


My bad. The thing just shows up on my iPad as bolted meaning new stuff...which is the only part I had energy to read! Ron
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Old 01-23-2017, 09:27 PM   #25
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Re: using 2x4's for joists


This is a 4' span right?
The 2x4 joists 16"OC should give you L/570 according to this tile floor calculator...
http://www.johnbridge.com/vbulletin/deflecto.pl
You could put tile on it but not stone.

Edit, although for my staircase landing which is 40x40, I used 2x6s.

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Last edited by Clutchcargo; 01-23-2017 at 09:35 PM.
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