Without the EJMA standard, any expansion joint sizing would be guesswork. With it, engineers can design systems that safely handle temperatures from cryogenic levels up to 2,000°F (1,093°C).
The (published by the Expansion Joint Manufacturers Association ) is the global authority for the design and application of metallic bellows-type expansion joints. ejma standard pdf
A: Every 4–5 years. The 9th edition was 2015; the 10th edition was 2023. The next (11th) is expected around 2028. Without the EJMA standard, any expansion joint sizing
The 10th edition introduced significant updates that any responsible engineer must adopt: Without the EJMA standard