Minimum pavement falls for drainage?

[Tomfh]

I am repaving around my pool. The minimum gradient I would ordinarily specify (1%) is going to be a hassle. It makes it hard to reach drain points. What's the realistic minimum I can get away with? Will 0.5% be ok? The pavement runs are 10m. So 50mm over 10m...

The subbase is well consolidated. It's not going to move much from here on.

 

[r13]

What is around the pavement? Can it absorb water? Or how about add another drain?

 

[Tomfh]

There are walls around the pavement. Garden wall. House wall. Etc.

I have two drains at present, and would prefer not to add another as it means cutting up concrete etc, and adding new pipes.

 

[EdStainless]

The flatter you get the more the surface finish matters, both roughness and direction of texture.

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P.E. Metallurgy, consulting work welcomed

 

[cvg]

2% is my normal minimum
with .5% , construction tolerances are high enough that you will probably have areas that will not fully drain. suggest decko drains at the joints

https://www.deckoseal.com/data/789.pdf

 

[r13]

I have two drains at present, and would prefer not to add another as it means cutting up concrete etc, and adding new pipes.

I am repaving around my pool.

I still think it is easier to add a few drains tied to the existing ones. But, if you prefer not to, I suggest add ditches around the pool, so you can slop towards the edges. Actually, if you don't mind ponding here and there, why slope at all, the areas around the pool will always be wet anyway.

 

[HTURKAK]

The proposed slope 1/200 should be O.K. if the new paving ise ceramic tiling and if the settlement is not issue..

 

[Compositepro]

The nicest surface I've seen around a pool is made from a mixture small pebbles and resin. The surface is comfortable to walk on, non-slip, and water drains quickly through the porous material so there is no ponding.