DRAINAGE SYSTEM

PROBLEM TO BE SOLVED: To provide a drainage system which dispenses with the preparation of a plurality of types of sundries collecting bodies different in the amount of protrusion, and which can change the amount of the protrusion of the sundries collecting body after construction. SOLUTION: This drainage system 1 is equipped with a main body 6 which comprises a tubular main body portion 11 for receiving rainwater, and a flange portion 15 protruding from an outer peripheral surface of the tubular main body portion 11. The reticular sundries collecting body 9 is detachably attached in the tubular main body portion 11 of the main body 6. A drain hole 17 is formed in the position, facing a top surface of the flange portion 15, of the tubular main body portion 11 in such a manner as to pass through inner and outer peripheral surfaces of the tubular main body portion 11. The amount of the upward protrusion of the sundries collecting body 9 from the main body 6 can be adjusted. COPYRIGHT: (C)2008,JPO&INPIT