20230725 07514400 1.0 TRUE Water Casing Casings are structures around pipes for Sanitary, Storm, or Water utilities that provide structural support to preserve the integrity of the utility pipe under an increased weight load (i.e. water, shallow DOC, road/railways, bridges, lack of adequate separation of utilities, access issues). https://upload.wikimedia.org/wikipedia/commons/thumb/d/db/18_inch_DI_Sewer_Installed_within_Steel_Encasement%2C_Lowell%2C_AR.jpg/1024px-18_inch_DI_Sewer_Installed_within_Steel_Encasement%2C_Lowell%2C_AR.jpg http://www.seattle.gov/Documents/Departments/SPU/Engineering/Public_Edit_v3_Ch4_GeneralDesign_Final_Redacted.pdf