GRE is still such a vendor driven design and product that there's no point you doing it - ask the few suppliers what they sell and what they think the max pressure is.
The aim of 14692 is to get suppliers to do the same thing and create a uniform product. But not for you to design the pipe and then see if someone will make it.
The most common mistake people make when designing non metallic pipe is to think the same way and use the same techniques as you do when desiging metallic pipe. Doesn't work like that IRL.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
I need minimum calculation thickness formulas for GRE pipe as per ISO14692, awwa m45, awwa c950
Diameter= 12 inches
Maximum Pressure = 15 bar
Maximum temperature = 90°C.
how to find the minimum wall thickness?
Like for any pipe wall thickness calculation, the codes require to consider the various stresses the pipe will be subject to during transportation, installation and operation (some also include decommissioning).
You can use GRE pipe manufacturer tables to select the usable thickness:
If you do your own calculations, you would find a minimum 3 mm thickness to withstand internal pressure, but on top of that at such diameter a standard pipe length (40ft/12m) will buckle and collapse when trying to lift it, so its thickness must be increased; and for GRE/GRP it is usually 2 to 3 times increase.
If you are not familiar with this type of material for pipes, then don't use it.
* Finding a solution is great * Knowing how to implement it is fantastic * Believing it is the only one and best is naive ?
