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Old 07-19-2019, 09:32 AM   #76
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Jane, the only place you actually need treated wood is the part that actually touches the ground or the concrete pad you're using for support (See Post #61). If you use the flat pieces of 2x material as PC suggested, it's OK to use treated wood for all of them, but you need to be prepared to tighten up your shims next year as that treated wood will shrink by then.

You could also use CMUs of some sort instead of the stacked wood and shim on top of that.

Plywood would not be my first choice of support material in your application.

Actually, whatever you use you should plan to be able to adjust your shims next summer after everything settles a bit. Hopefully not enough to cause any cracking in your tile or grout.

My opinion; worth price charged.
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Old 07-19-2019, 10:00 AM   #77
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Ok, I'll replace plywood shims.
Where do I get a CMU? I was asking about shims at Home Depot and nobody could tell me anything.
The good thing about my PT pieces is it's been in my garage since I built my deck a few years back. Pretty dry I'd guess.

Does my new beam have to be coupled 2x10, or would doubled 2x8's suffice?
Thanks!!!
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Old 07-19-2019, 10:26 AM   #78
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How long will the new beam be?
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Old 07-19-2019, 10:54 AM   #79
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10'. There's already a beam that I've shimmed up about 8' from stem wall, but it sits on pavers and I thought it best to add a nice strong beam with poured piers at about 4-5' from stem wall right across the center of bathroom floor.
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Old 07-19-2019, 12:30 PM   #80
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I'd say that a double 2X8 will be fine. Set the 2 support posts 2 feet from each end of the dbl 2X8.

Selecting straight, non cupped 2X8's will make your life easier.
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Old 07-22-2019, 04:45 PM   #81
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I'm pouring the pads and attaching the post anchor and Just wondering how long does this cement need to dry before it can fully support the post and beam??
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Old 07-22-2019, 06:03 PM   #82
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Typically, 7 days is the required cure time for concrete in structural applications such as slabs and foundations. That’s the time it takes for the concrete to reach 2500 PSI (70% rated strength); it will continue to slowly cure over 28 days. For situations like yours with limited load, I’ll set posts under the beam after 3 days.


Back in the day, I worked at a prefab concrete pace where we made really big septic tanks for pork farmers. We would pour those things one day and pop em out of the mold the next. I’m sure the concrete was a fast set blend and the tanks only had to hold their own weight in the yard until they cured and were shipped out in a few weeks.

I’m currently beginning a project where we will be underpinning 60 linear foot of foundation in 4 foot sections. Those sections will have to cure for 7-8 days before we do the next sections; probably 3 different pours. Lots of time to wait between pours but not something you can rush.

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Old 07-22-2019, 06:14 PM   #83
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Thank you. Plumber starts Wednesday. I guess I'll tell
Him rip out and replace pipe, etc, but plywood and tub install will have to wait a week. Thanks!
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Old 08-04-2019, 09:25 AM   #84
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Floor is down, insulation, glue, screws, the whole bit. Even moved the duct myself- AC guy wanted $250, pffttt Lowes had these twisty metal elbow joints that did it for $30.

Soooo, I have a tiny high spot around the toilet and I have left over ditra. But I'll likely use ditra heat mats near the vanity. I figure I can use the ditra around the toilet and a little extra thinset if needed to match the ditra heat mats. Unless you yell at me...

Also, need to talk about shower surround soon. What is the absolutely easiest way? Help before I buy the damn acrylic walls and quit.
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Old 08-11-2019, 11:41 PM   #85
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Ditra in toilet area where it's slightly higher, Ditra XL with heat by vanity area, seems fine to me, is that crazy?
What size trowel do you like to put ditra down?

Also...Easiest way to tile tub surround??

Any tips on building tub skirt? Wood or tile, whatever is easiest

Thank you
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Old 08-12-2019, 07:23 AM   #86
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Quote:
Originally Posted by Jane
I have a tiny high-spot...
What is the unit of measure for “tiny”?
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Old 08-12-2019, 08:14 AM   #87
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Aw, c'mon, PC, I thought you was a injineer. Tiny is measured in units of Itty Bitty and is quite easy to picture.


For somebody.
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Old 08-12-2019, 12:25 PM   #88
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Old 08-12-2019, 04:10 PM   #89
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Just one itty bitty 1/8" or so
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Old 08-12-2019, 05:10 PM   #90
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Good to know. What size tile are you using? Is this a smaller area (2-3” across) or a larger area?
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