PSI needed for gunite pool

dphanes

Active member
Aug 19, 2020
39
NC
I have read that the gold standard for a gunite pool is 4000 PSI. I have also read about PB building at 3000 PSI. How much greater chance is there for structural failure at 3,000 vs 4,000 PSI
 

cowboycasey

Gold Supporter
LifeTime Supporter
TFP Guide
Jul 3, 2013
4,440
Fletcher, OK
I had no idea so I went to the google machine :)

Looks like 4000 is the way to go....

.
 

jvaymd

Member
Jan 20, 2020
11
Cresaptown, MD
I don't know how one could estimate the chance of structural failure between 3000 vs 4000 psi. I believe there are many other variables that would/could impact the long term structural soundness of a concrete structure. For example: sub grade conditions, steel rebar layout/design, temperature during placement, placement procedures, curing conditions, climate and freeze /thaw cycles, thickness, slump properties, etc. That being said, If I had the choice I would always choose the higher psi mix design for any water containing vessels, retaining walls, light commercial slab applications, etc. ; I am not in anyway an expert on concrete or pools though.
 

jimmythegreek

TFP Expert
Bronze Supporter
In The Industry
Aug 10, 2017
2,942
Morris Cnty NJ
Its 10 to 15 dollars a yard more for 1k psi upgrade on cost of concrete. So 300 bucks average, cheap insurance to me I wouldnt use less than 4k. I actually use 4kpsi for everything I pour
 
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