Beach entry slope problems

4 years ago

I have a problem with my pool build in that the beach slope is too steep (1 to 4 slope) and needs to be raised on the one end and create a step and then taper back to the beach to create a 1 to 7 slope needed. This pool has not been plastered yet and is in it's gunite phase.

The plan is to epoxy new rebar every 24" squares and create a 6" inch grid all the way up the beach until the concrete is less than 3". The beginning of the beach will get a triangle notch cut to create a line to make sure the new concrete is never tapered. The plan is to wheelbarrow in a shotcrete mix with 4,500 psi 3" slump with a bonding slurry first.

Does this sound like a good fix? Is the shotcrete necessary or will this be just fine?

If anyone has anything to add I am open to suggestions.

Featured Answer

PRO

Mystic Pools, LLC

4 years ago

So if I understand this correctly, the beach was shot when the pool was shot, but the slope ratio is too great? You now want to adjust the beach entry by changing the slope ratio?

Where was the structural engineer in all of this?

Wheeling in shotcrete? Shotcrete is as it says. It's shot concrete under pressure. In the pool world. shotcrete is considered a wet shot as opposed to gunite which is a dry shot.

the American Concrete Institute does refer to the method as shotcrete.

Wheeling in concrete and placing it is not the same as concrete shot under pressure at a particular velocity.

The end of the ramp should not be tapered to a narrow thickness. In a freeze/thaw area, this could have potential issues.

You should consult a structural engineer for any changes you wish to make. You don't want a failure on the structure.

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Comments (8)

PRO
Patricia Colwell Consulting
4 years ago
This is aquestion for your pool builder I sure hope you have one.
PRO
Mystic Pools, LLC
4 years ago
I'm having a hard time understanding what your plan is. The photo posted does not help. Is the beach entry to the right?

Another pic or a quick sketch would suffice.
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PRO
Mystic Pools, LLC
4 years ago
I'm having a hard time understanding what your plan is. Slope ratios for pools are 3:1. For every 3' of run there is a 1' drop.

Please post another pic or sketch for clarity.
Ryan
Original Author
4 years ago
The pool has a beach entry and it is sloped 4 to 1. If we were to tile this or use natural stone on the entry it would be too steep. It does violate pool code for the entry part only and not the whole pool. 3 to 1 or less I think is fine for transitions. The above plan is to add concrete by pumping in and not shoot it. I just need to make sure the old and new concrete are joined well. The only part getting added to would be the first 14 ft of floor.
Ryan
Original Author
4 years ago
last modified: 4 years ago
Yes, the slope ratio on only the beach needs to be adjusted to 7:1. It should not have gotten past the engineer the first time or the county engineer or inspector but it did. I'm on my own in this department so I am fixing this on my own.

I only meant matching the same shotcrete mix to match in similarity to the previous shotcrete. It would not be shotcrete. This is probably going to have to be pumped in as it is about 5 cubic yards of concrete.

The plan is to dowel in #4 rebar every foot with epoxy , a new rebar cage of #3 and then pour the new concrete over SSD old concrete with maybe a bonding agent. (I am guessing that this is overkill) The new concrete on the beginning side of the ramp would be cut at an angle 2in deep to avoid any tapering of concrete.

We do not live in a freeze area so our footing depths here are around 16 in deep which we already have.

I know people add height to concrete pools all of the time. I just want to make sure that this is either overkill or the norm.
PRO
Mystic Pools, LLC
4 years ago
Doweling process is ok. We do the same thing when adding benches, steps, etc.. in existing pools. Even old ones.

#3's fine. No need for a bonding agent. SSD is just fine.
Ryan thanked Mystic Pools, LLC
HU-451558625
2 years ago
I see this a 2 year old post and I have the exact same problem. I am wondering how this turned out for you. I meet with my pool builder tomorrow to see what my options are. Mine is a 1:3 ratio entering. It is very steep.