4.0 Design & EngineeringFollowing are the major documents are part of detail engineering of the works for Package I-014.1 Civil & Structural• Civil & Structural Design Basis• Tank, dyke and Drum Foundation• Concrete pad for piping, stairs, equipment, structural steel etc.• Piping Supports Design & Drawing• Sizing calculation reinforcement concrete (all the foundations)• Sizing and construction drawing of oily water collection/ disposal system• As built documentation4.2 Tanks &Mechanical• Design Basis• Design Calculation of tanks & roof• Tanks General Arrangements drawings.• Detail fabrication drawings of plates arrangements for Tanks• Accessories details – Data Sheet e.g. Vents and other roof connectors such as, but not limited to, high level alarm connections, roof hand railing, thermal relief line, tank gauging etc.• Accessories details – Data Sheet for other accessories or connections such as, but not limited to, tanks inlets, outlets, drainpipes, thermometer well, earth connector,• Provision for cable trays,• Handrails on the supported walkways• Tanks spiral stairs details for tanks, helicoidally stairs waiting platforms• Details and specifications of the grating to be used for the stairs and platforms• Gauge Hatch & Gauging Platform• Wind Girder• Painting specification for all tanks• Mechanical Datasheet for Product Pumps & Tank Mixers• As built documentation