To provide a water-retentive horizontal wall structure of a building which effectively lowers external and internal temperatures of the building and suppresses heat island phenomenon though it is produced at low cost and easily maintained.
The horizontal outer wall structure becomes an exposed uppermost floor, balcony or the like in the building, and has impermeable layers 2, 3 provided with a plurality of recesses 20, 20.... at an upper surface of the layer 2 and a permeable layer 1 provided on these layers. This permeable layer 1 forms a surface of the horizontal outer wall. The horizontal outer wall structure further has a water storage tank 4 for storing rain water or the like, a drain means 5, 50 for discharging the water from the water storage tank 4, and a temperature sensor 6 for detecting temperature of the surface of the horizontal outer wall. The drain means 5 is driven by a detection signal of the temperature sensor 6 and the water in the water storage tank is discharged to the permeable layer 1.
| JP2011217732 | GREEN BUILDING |
AWAZU KUNIO
AWAZU KUNIO
Noriko Murata
Shuji Tokuoka
Hiromitsu Shigemoto
Naoko Oozumi