Numbers and Titles



Includestanks with cone-shaped, domed, umbrella-type, or other fixed roofs; typically used with liquids with high flashpoints.
33 56 21.13Double-Wall Ground-Level Fixed Roof Metallic Hydrocarbon Storage Tanks
33 56 21.16Single-Wall Ground-Level Fixed Roof Metallic Hydrocarbon Storage Tanks
33 56 21.23Single-Wall Ground-Level Fixed Roof Non-Metallic Hydrocarbon Storage Tanks
33 56 21.26Double-Wall Ground-Level Fixed Roof Non-Metallic Hydrocarbon Storage Tanks