: If you are a student or an engineer at a medium-to-large firm, check your library's digital subscriptions (like IHS Markit or British Standards Online). You likely already have access for free through your institution.
BS 4994 is a British Standard that provides recommendations for the design, installation, and maintenance of reinforced plastics and other plastics structures for above-ground storage tanks. The standard covers aspects such as materials, fabrication, inspection, testing, and safety considerations. bs 4994 pdf free