| 摘要 |
PROBLEM TO BE SOLVED: To provide the drainage structure of a balcony capable of removing stagnating water in a floor part uncorresponding to a part overhanging the projected balcony in a floor substrate of a balcony main body. SOLUTION: A drain gutter 3 is provided along the end on the opposite side to a balcony main body 1 of a projected balcony 2 and, at the same time, a drain outlet 4 is provided to the drain gutter 3. A first inclined floor substrate 5 continuously inclined downward to the drain gutter 3 side is formed of the floor substrate of the projected balcony 2, a part corresponding to the projected balcony 2 in the floor substrate of the balcony main body 1 and the floor substrate of the projected balcony 2. A floor substrate uncorresponding to a part overhanging the projected balcony 2 in the floor substrate of the balcony main body 1 is used as the floor substrate having two upper and lower stages. The lower stage floor substrate is inclined at the same incline in the same direction as that of the first inclined floor substrate 5. The upper stage floor substrate 7 mounted on the lower stage floor substrate is so inclined that it is getting higher as distance separates far from the first inclined floor substrate 5 in the direction at right angles to the projected direction of the projected balcony 2.
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