BS 4994 classified vessels into two categories:
BS 4994 focuses on:
Unlike steel, FRP fails by excessive strain before yielding. BS 4994 used limiting strain (typically 0.1% to 0.2%) for the design of chemical tanks, not just stress. This prevented micro-cracking that leads to chemical permeation. bs 4994 pdf free
Go to shop.bsigroup.com and search for "BS 4994". BSI will sell you a PDF for approximately £198 (price may vary). This is the only completely legal, fully-printable, searchable digital copy.
Compliance with BS 4994 requires passing standardized tests, such as: BS 4994 classified vessels into two categories: BS
If you cannot find an immediate free copy, you may still get the information you need from this summary of the standard’s core technical requirements.
BS 4994 was revolutionary because it recognized that FRP is not isotropic (its properties change with direction). The standard introduced design methods based on: Unlike steel, FRP fails by excessive strain before yielding
Here is a practical action plan if you absolutely must obtain the original BS 4994 text: