Raised Bond Beam Construction Question

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derekbishop

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Jun 9, 2017
28
Phoenix, Arizona
Could anyone out there that is more familiar with pool construction techniques be able to tell me how this raised patio is constructed.

This is a pool at a model home that I really liked a lot and I want to replicate the raised patio with my OB.

The raised patio has an overhang of 3-4” on the two sides with water.

Is the overhang a part of the bond beam or would it be cantileverd?
 

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I don't think that coping is cantilevered. Cantilevered says it has a gap and is not touching the bond beam.

I think that coping just has an overhang over the inside of the pool.

You need to examine under the coping and see if it is sitting on the bond beam or is cantilevered above it.

Cantilevered_Coping.png


Poured_in_Place_Coping.png
 
ajw22 said:
I don't think that coping is cantilevered. Cantilevered says it has a gap and is not touching the bond beam.

I think that coping just has an overhang over the inside of the pool.

You need to examine under the coping and see if it is sitting on the bond beam or is cantilevered above it.

Cantilevered_Coping.png


Poured_in_Place_Coping.png
Click to expand...

@ajw22 I’ll likely take a drive out again to examine more closely under the lip of the overhang. If it ends up being poured could the overhang part be formed at the time of shotcrete since it’s all going to be tiled?
 
derekbishop said:
If it ends up being poured could the overhang part be formed at the time of shotcrete since it’s all going to be tiled?
Click to expand...

Which surface are you asking about?

I see five different materials. From the bottom you have:

  • Pebble plaster in the pool
  • Blue waterline tile on the face of the bond beam
  • On the left - coping stones laid on top of the bond beam. You can see the grout between the bottom of the coping stone and the top of the bond beam indicating it is not cantilevered.
  • On the right - deck structure sitting on top and overhanging the bond beam with tile or wood on the face and side.

img_0092-jpeg.537221
 
ajw22 said:
Which surface are you asking about?

I see five different materials. From the bottom you have:

  • Pebble plaster in the pool
  • Blue waterline tile on the face of the bond beam
  • On the left - coping stones laid on top of the bond beam. You can see the grout between the bottom of the coping stone and the top of the bond beam indicating it is not cantilevered.
  • On the right - deck structure sitting on top and overhanging the bond beam with tile or wood on the face and side.

img_0092-jpeg.537221
Click to expand...

Referring to the deck structure overhanging the bond beam and covered in wood look tile.

Just trying to see if anyone knows how that would be constructed.
 
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derekbishop said:
Referring to the deck structure overhanging the bond beam and covered in wood look tile.
Click to expand...

You have to use your X-ray vision to see what the structure is under the tile.

The joint I put the red box around shows it lays on the coping and there is not a cantilevered gap.

I doubt it was formed with the shotcrete.

deck.jpeg
 
The pool in the pictures looks like it is tied to the bond beam since there are no visible expansion joints. I agree with this particular construction given the shape of the pool and the location of the deck.

Regardless of how that Pool is constructed, yours is most certainly going to vary and there is definitely a right and wrong way to do it that a builder may not get correct.

Do you have plans for your pool yet that you can post?
 
bdavis466 said:
The pool in the pictures looks like it is tied to the bond beam since there are no visible expansion joints. I agree with this particular construction given the shape of the pool and the location of the deck.

Regardless of how that Pool is constructed, yours is most certainly going to vary and there is definitely a right and wrong way to do it that a builder may not get correct.

Do you have plans for your pool yet that you can post?
Click to expand...
I appreciate you taking the time to chime in. I don’t yet have my pool plans. I’m still finalizing my design but continue to go back to this raised deck with overhang as a want to have.

I also don’t know if I should expect the individual that I would be using for my pool plans to have this level of knowledge as it’s probably a bit more advanced. He does use pool studio software.

I would really like the raised deck with the overhang but if it’s more than I can chew through an OB process and working with the subs I might have to give this one piece up.

My pool design would be very similar though to the picture with the in water steps to the raised pad, a larger sun shelf, then the open water area.
 
I feel the safest approach is to build it independent of the pool shell as a cantilevered deck as pictured in the cross section that was posted above. This will ensure that any potential movement will not translate into cracked tile or bond beam damage.

This isn't really a complicated construction process and it's not an expensive feature (not much more than standard decking) unless you get silly with tile choices/finishes.

It would be worth while to consult with the engineer that provides the structural design and request a specific detail for that portion of the pool. I would not rely on the designer or builder for it. Pool Studio makes pretty pictures to sell pools...its the engineer's job to make that picture into a buildable and durable project.
 
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bdavis466 said:
I feel the safest approach is to build it independent of the pool shell as a cantilevered deck as pictured in the cross section that was posted above. This will ensure that any potential movement will not translate into cracked tile or bond beam damage.

This isn't really a complicated construction process and it's not an expensive feature (not much more than standard decking) unless you get silly with tile choices/finishes.

It would be worth while to consult with the engineer that provides the structural design and request a specific detail for that portion of the pool. I would not rely on the designer or builder for it. Pool Studio makes pretty pictures to sell pools...it’s the engineer's job to make that picture into a buildable and durable project.
Click to expand...
@bdavis466 thanks so much for this and the pool eng link! What is usually used as a bond breaker or slip joint for cantilevered deck applications?
 
I am assuming that deck is concrete under the wood look tile.
It is simply a matter of forming a support for the overhanging edge, before forming the slab that makes up that deck.

A bond breaker between the bond beam and the deck is in order (foam, tar paper, etc)

Of course proper reinforcing steel is necessary for the slab in general, and for the overhang.

The trick is, how do you plan to finish the underside of that overhang? If you want to tile it, then you have to make sure you include the thickness of the thinset an tile when you build your forms.
If you want to leave it bare concrete, then keep in mind that it will not be a trowled finish, but instead will look like whatever form material you used. In that case I would not use something like plywood, but rather something smoother so it looks nicer for people who have a mind to stick their heads under it and look up.
 
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