The size of the expansion joints between coping and the decking concrete

[amin36]

Hi pool people
my question is about The size of the expansion joints between coping and the decking concrete and the distance expantoin joints should be having from one another?
thanks

 

[Jimrahbe]

G,

Most of the ones I have seen are about 3/4" wide.

Thanks,

Jim R.

 

[Backyard_Lap_Pool]

My flatwork contractor used deck-o-foam between pool shell and flatwork. 1/4” thick foam roll that can be easily removed post cure for the deck-o-seal or left in place if you are running something else on top.

 

[amin36]

G,

Most of the ones I have seen are about 3/4" wide.

Thanks,

Jim R.

Thank you jim.and what about the distance they should be having from one another?

 

[duraleigh]

A general rule for concrete is it shouldn't exceed 15 feet in any direction without a joint.

I also seem to see most of those joints at 3/4 of an inch but I have never understood why. 1/4 inch seems aesthetically better and still function fine

 

[Backyard_Lap_Pool]

A general rule for concrete is it shouldn't exceed 15 feet in any direction without a joint.

I also seem to see most of those joints at 3/4 of an inch but I have never understood why. 1/4 inch seems aesthetically better and still function fine

3/4” is typical because the 1x4’s they use to form up the sections are 3/4” thick. Between the pool coping and flatwork though, putting a 1x4 there seems odd. At most, I’d put a 1/2” strip of dow foam board that could be easily removed later.

 

[amin36]

A general rule for concrete is it shouldn't exceed 15 feet in any direction without a joint.

I also seem to see most of those joints at 3/4 of an inch but I have never understood why. 1/4 inch seems aesthetically better and still function fine

perfect answer duraleigh.thank you

 

[amin36]

Another question:are expansion joints just used as the line of delineation between the pool itself and the deck or do we use them more in other places in the deck?