A course aiming to study all kinds of sanitary and environmental systems in buildings and their approximate size prediction. Issues to be covered: Water supply, hot water, liquid waste, solid waste systems and sanitary appliances. Energy systems (Electrical systems, telephone ducts, gas-liquid and solid fuels), Heating, cooling, ventilating, air conditioning systems, smoke and ventilation flues, refuse chutes. Mechanical conveyors-lifts, escalators, tube conveyors-, fire systems -alarms and firefighting equipment-, lightning protection. Security systems.