Pole construction census: 6"x6" PT post, VS: 3x 2"x6" PT glued/or not glued laminated

[SIMassey]

Re: Pole construction census: 6"x6" PT post, VS: 3x 2"x6" PT glued/or not glued lamin

If laminating in place, are you just using PT on the first courses, or are you still using them for the entire post?

On mine, pt was only used for bottom sections that were to be buried. My understanding is, that is a special grade of pt to be used for direct contact with soil. I never knew this until a couple years ago. I had my building built. My building was built in 2007. 50 year warrantee on posts. I will never have to worry about them, I'll be long gone.

 

[woodchipper]

Re: Pole construction census: 6"x6" PT post, VS: 3x 2"x6" PT glued/or not glued lamin

Thank you for all your diligent answers. The laminating approach seems to have many happy adepts. I will caution anyone tempting to do it, to double make sure the "ACQ" treatment is .60. This is the concentration of the "ACQ" content in the wood fiber. When pressurising the timber, you will get more injected as the pressure increases. The .60 value, is the amount injected in pounds, in one cubic foot of wood. Those are therefore "inground use" rated. Home Depot has them among others, and are brown in colour. Take a close look at the sticker on the board, as it may be identified right there.

 

[rswyan]

Re: Pole construction census: 6"x6" PT post, VS: 3x 2"x6" PT glued/or not glued lamin

Wick uses 3 2x6s . Truss is sandwiched between outside layers then bolted. Center board was left short and did not extend to top of post, when truss elevation was established, center board was cut to length, sandwiched between outside layers and truss was set on top of center board. ...

This is the same method that Cleary, who built our 42' x 72' x 12' polebarn, uses ...

Built in 2007' and no issues so far.

 

[tow653]

Re: Pole construction census: 6"x6" PT post, VS: 3x 2"x6" PT glued/or not glued lamin

30x50 just built,used laminated beams,trusses on 10' centers,with it sitting on top of center 2x6,with side ones extending up,and lagged in.

 

[nybirdman]

Re: Pole construction census: 6"x6" PT post, VS: 3x 2"x6" PT glued/or not glued lamin

3-2x6's set on and anchored to a concrete footing.Not poured in concrete.Very good system for us up north.

 

[truckdiagnostics]

Re: Pole construction census: 6"x6" PT post, VS: 3x 2"x6" PT glued/or not glued lamin

Take a look at my post, Pole Building in Build-It Yourself, there is a link to a nice manual on how to build a pole building. Between the pics and the links should answer a lot of your questions. I know I had a lot of the same questions.

 

[daybreak1998]

Re: Pole construction census: 6"x6" PT post, VS: 3x 2"x6" PT glued/or not glued lamin

Howdy,
There is a method to the madness. Today's current standard is to use soil ready ACQ Pressure treated 2x6 in groups of three. With seam offsets. The reason is the overall strength, curing, staying straight post can be obtained. After the 3 2x6 grouping is above ground level, you will then use standard 2x6's. This method is used by probably 90% of commercial pole building companies. This way they do not have to worry about a true 6x6 twisting up after a year.

 

[Rustyiron]

Re: Pole construction census: 6"x6" PT post, VS: 3x 2"x6" PT glued/or not glued lamin

Howdy,
There is a method to the madness. Today's current standard is to use soil ready ACQ Pressure treated 2x6 in groups of three. With seam offsets. The reason is the overall strength, curing, staying straight post can be obtained. After the 3 2x6 grouping is above ground level, you will then use standard 2x6's. This method is used by probably 90% of commercial pole building companies. This way they do not have to worry about a true 6x6 twisting up after a year.

This is my preferred method, but in the past several years since they've been monkeying around with the different "preservatives", I have not been able to find a 2x6 that was "ground contact" rated, at least at all the commercial lumberyards. I think that getting your wood "out of the hole" is probably the best long term method. Pictured is the "Perma Column".

 

[LD1]

Re: Pole construction census: 6"x6" PT post, VS: 3x 2"x6" PT glued/or not glued lamin

The extreme cost of perma columns and not wanting wood in the ground has made my build decision to go with a footer and stick built walls.