Context:
An engineer experienced in the design of reinforced plastic tanks must undertake calculations substantiating the design of the tank, using the appropriate sections of NZS 3106: 1986 Code of practice for concrete structures for the storage of liquids, to determine the dynamic liquid loads; NZS 4203: 1992 Code of practice for general structural design and design loadings for buildings (or AS/NZS 1170, and NZS 4219: 1983 Specification for seismic resistance of engineering systems in buildings.