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Sill plate dimensions

| Posted in Construction Techniques on October 27, 2003 10:47am

This is regarding a 5′ x 16′ shed.  Stud wall constructed from 2 x 4s.  Floor joists to be 2 x 6s on 16″ centers.  The sill plate will be placed on a concrete slab.  What size should the sill plate be?  If I use a 2 x 4 sill plate the floor joists will only rest on 2″ since the rim joist will take away 1-1/2″.  Should I use 2 x 6 sill plates?  Using 2 x 6s will provide 4″ for the floor joists to rest at each end – or is this overkill?

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Replies

  1. Framer | Oct 29, 2003 01:40am | #1

    If I use a 2 x 4 sill plate the floor joists will only rest on 2" since the rim joist will take away 1-1/2". 

     

    2x4 sills is fine and the 2" is fine. We build houses the same way with 2x4 walls and the top plates have on 1-1/2" rim joist with 2" bearing for your floor joists.

    Joe Carola

    1. andybuildz | Oct 29, 2003 11:41am | #2

      Joe

           Sorry to interupt here but I was wondering.....(for a change)...I'm framing my 30x30 garage (2 stories).....I have two 2x6 CCA plates bolted down. I decieded to to one by one (not built on the floor in this case) install 2x6 studs ontop of the CCA plates. Someone came by the other day and asked me why I didnt use yet anther bottom plate for my walls instead of using the cca plates I installed.

      What the hell would the purpose of a third sole plate be????? Did I F up?

      Be well

                 andyMy life is my practice!

      http://CLIFFORDRENOVATIONS.COM

      1. Framer | Oct 29, 2003 01:38pm | #3

        What the hell would the purpose of a third sole plate be????? Did I F up?

        There is no purpose for a third plate. The only time you would need a third plate would be because if your top plate of your garage walls were to match the top plate of the house and the studs for the walls you were using were a little short by 1" then you add the third plate and cut the studs a 1/2".

        Post some pictures. I love to see them.

        Joe Carola

        1. andybuildz | Oct 29, 2003 04:26pm | #5

          Joe

                 seriously rained out today as I'm sure you are.

          Figuring the second floor material list today.

          Rest of the week is spose to rock through the weekend so I'll be a framing fool.

          Pic soon to come.

          I wont speak about all the mistakes I made and corrected.

          Cool thing is I met the building inspector at a concert here in town (Jon Luc-Ponte).

          we had a beer together and he's dropped by several times to say hello and grabbed my helpers hammer and banged some nails.....lol

          Be good karma

                         andyMy life is my practice!

          http://CLIFFORDRENOVATIONS.COM

          1. Piffin | Oct 30, 2003 12:13am | #7

            Rained out seriously??????????

            This ain't rain.

            This is a puke bucket! I wish they had some of it in California. I swear, we've had over fifteen inches in six weeks or less and thge bigger half of that in the last ten days.

            LOL

            It must be written in the sky someplace, a rule that says, "Dig it and it will flood!"

            I've got a couple of 4" drains in at proper level but you know how a dig can be a little uneven...

            I should have set the drains 4" low..

            Excellence is its own reward!

        2. JohnSprung | Oct 29, 2003 10:52pm | #6

          Given that they're 2x6, three plates should be fine.  But with 2x4's you'd have a stack 4 1/2 high by 3 1/2 wide.  In earthquake country, that's where we might start to worry about them rolling over.

          -- J.S.

      2. User avater
        SamT | Oct 29, 2003 03:31pm | #4

        Why did you use 2 CCA plates?

        I suspect the 3rd plate you're talking about is meant to be a substitute for the second CCA plate, which you seem to be using for a framing plate.

        I don't see anyproblem except the extra cost of CCa for the framing plate and the hassle of stick framing as opposed to standup framing.

        SamT

        "You will do me the justice to remember that I have always strenuously supported the right of every man to his opinion, however different that opinion may be to mine. He who denies to another this right, makes a slave of himself to his present opinion, because he precludes himself the right of changing it."   Thomas Paine

        Edited 10/29/2003 8:37:48 AM ET by SamT

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