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Advice for digging post holes in DG patio...

Posted by modern_miss 10 (My Page) on
Tue, Jul 23, 13 at 12:12

Hi, I'm constructing a pergola above a decomposed granite patio. The posts will be sunk into the patio. I'm ready to build the DG patio now - should I dig the post holes now (the pergola will be constructed in about a month) or deal with it later? Is there a way I could dig the post holes now and hold the space for them using some mold or shape?


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RE: Advice for digging post holes in DG patio...

It would be best (usually) to dig the holes when you are ready to use them. If for some reason they need to be dug early, there are cardboard tube forms that could be used to maintain the hole. These are available at Lowe's and Home Depot near where they keep the rebar and cement-based mixes. The tubes are sturdy, but whether they would last a month is a question you would need to estimate for yourself, based on your weather conditions. They are tough and their length is easier to cut with a circular saw rather than a utility knife.


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RE: Advice for digging post holes in DG patio...

Thanks - never knew these existed! I'm going to check these out today.


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RE: Advice for digging post holes in DG patio...

Dig holes before laying DG patio.
Place in forming tubes for future concrete footing.
If you are pouring concrete and setting your post ties, do them at this point, not later.
This keeps the dg clear of soil contamination at a later date. It also helps when setting the grade by tying your string level lines to the concrete piers or post saddles .

as a loose rule of thumb - get all you sub surface infrastructure in before your surface work.


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RE: Advice for digging post holes in DG patio...

  • Posted by ctycdm 10b/Sunset 24 (My Page) on
    Wed, Jul 24, 13 at 13:27

I would think it would be better to dig and set the posts in concrete before laying down the DG if you have that option. Otherwise the sonotubes should do the trick.


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