Abstract: Comparative analyses were performed on the geotechnical investigation of a large oil tank by using different code requirements in this paper. Namely, The National Standards (GB) Geotechnical Investigation, Geotechnical Investigation Code for the Oil, Gas and Pipelines; Geotechnical Investigation Code for the Petroleum and Chemical Engineering Projects and Foundation Design Code for the Steel Storage Tanks for the Petroleum and Chemical Engineering are compared. The actual geotechnical investigation for the oil tanks can be optimized and the economic construction cost can be achieved by using appropriate standards.

Key words: Large Storages Tanks, Geotechnical Engineering Classification, Geotechnical Investigation Plan, Comparative Studies