Replies

1. 
   Danno | Jul 03, 2008 03:14pm | #1

   Consider this a "bump" (no answer, but pushes your question back up the list).

   I would consider drilling holes with a hammer drill or rotary hammer and epoxying in any bolts you need for a base.

   I believe there is something calle "Vycor" that is a self adhesive rubbery flashing (like water and ice shield) that would isolate the wood from the concrete--even a couple thicknesses of tar paper would work, or painting the endgrain with asphalt.

2. 
   m2akita | Jul 03, 2008 04:49pm | #2

   Have you figured out why the post is settling?  Need to address that situation before putting your new post in or I think you may have the same problem occuring.

   Dont know where you are located, but we are able to get 8x8 P.T. posts, or Borate treated posts ( may have to special order them, but we can get them).  What about a lally column instead of the wood post?

   If you fill out your profile ( I think you can do it by clicking on your name in the upper lft corner of screen), people will know where you are located, and may be able to give some more local tips.

    

   Live by the sword, die by the sword....choose your sword wisely.
1. 
   ovi | Jul 03, 2008 05:10pm | #3

   the project is located in San Francisco,I thought of using a lally column, but with wood is more convenient to work since I can cut to lenght on site,thanks a lot

1. 
   Ted W. | Jul 03, 2008 06:09pm | #4

   Lally columns are adjustable by turning the screw. Also, you can bolt the flanges to the footing and the beam, where a wood post might be tricky to slip over an anchor bolt, maybe have to jack the beam a little higher to get the post in. Also, you won't need any isolation.

   Speaking of isolating, you could treat the bottom of a wood post with shellac. --------------------------------------------------------

   Cheap Tools at MyToolbox.netSee some of my work at TedsCarpentry.com

1. 
   ovi | Jul 03, 2008 07:00pm | #5

   Thanks for the tip.
   do yo know where I can buy them?(the job is in San Francisco).also in this tipical situation a lally column can replace a 8x8 wood post in a two story house?

1. 
   MikeSmith | Jul 03, 2008 07:32pm | #6

   if there is nothing wrong with the post... just jack the beam & shim between the post and the beam ... if the post base is rotten , causig the settling, then you have to replaceif it is just long term settling, assuming it has stopped, then you can shim
   if you want to substitute a lally, you may get some free engineering at your lumberyardif there is a major point load you may need a double lally to replace the 8x8not all lallys are adjustable... we cut ours on site with a 4" pipe cutter
   you can also cut them with a metal cutting blade & a sawzall
   just cut thru the steel, stop at the concrete once you cut the steel the concrete will snap and you can bush the endsMike Smith Rhode Island : Design / Build / Repair / Restore

2. 
   ovi | Jul 03, 2008 07:49pm | #7

   thanks Mike, I guess I haven t thought of shimming the post since the post is ok , and also the footing does not present any cracking or obvious damage.I appreciate that I need to lift the floor about 1/2",what kind of shims I can use, since I doubt that the normal wood shims will do the job?

3. 
   SBerruezo | Jul 03, 2008 08:26pm | #8

   I'm a bit north of you, and I can't recall seeing any 8x8 PT either. One option may be some copper solution that is readily available (like Jasco Termin-8 or Copper Green) that is used to re-seal cut PT.Vycor also offers a good barrier both between wood and concrete, as well as between our wonderful new PT and steel hangers/post bases.As for shims, I would use metal/steel plate for the strength. You'll probably, assuming the structure is sound, be able to jack the floor to where you need it and slide in the shims.Good luck. 

4. 
   Ted W. | Jul 03, 2008 09:14pm | #9

   Ahh... Since you asked about replacing them I assumed they needed replaced. If they're okay then shimming is the way to go. Steel or any hardwood will due, but steel will probably be easier to attain. You could get blank junction box covers in the electrical department.--------------------------------------------------------

   Cheap Tools at MyToolbox.netSee some of my work at TedsCarpentry.com

3. 
   JeffBuck | Jul 05, 2008 02:38am | #10

   "however the floor is out of level seriously because of the settling of a main post in basement."

   what "settled"?

    

   and how do we know it's the post, the beam and/or the foundation?

    

   Jeff

       Buck Construction

    Artistry In Carpentry

        Pittsburgh Pa

4. 
   timkline | Jul 05, 2008 06:14am | #11

   if you are noticing "seriously out of level" floors upstairs, i doubt that you just need to raise one spot just 1/2"

   generally jacking is done with a separate post and a hydraulic jack.

   here is a post base table that could be an option   there is a base or 2 for 8x8's   i am positive a base this size will be a special order.

   http://www.strongtie.com/products/connectors/AB-ABA-ABE-ABU.asp

    

   carpenter in transition