Title:
WATER PERMEABLE BLOCK FOR CULVERT DRAINAGE AND CULVERT DRAINAGE STRUCTURE USING THE BLOCK
Document Type and Number:
Japanese Patent JP3825086
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a water permeable block for culvert drainage, easy to handle, inexpensive, highly functional for drainage and highly durable.
SOLUTION: This water permeable block is made of S-shaped or pseudo S-shaped synthetic resin foamed members deposited to each other, and molded into plate type, deformed type or block type. In this case, each of the S-shaped or pseudo S-shaped synthetic resin foamed members to constitute the water permeable block is formed to have length L, overall breadth C, thickness T, member breadth W and curved part thickness R set at such ratios as C/L between 0.55 and 0.3, T/L between 0.46 and 0.15, W/L between 0.35 and 0.15. In addition, the actual dimension of the length L is taken at a value between 75mm and 15mm, and density is taken at a value between 0.05g/cm3 and 0.005g/cm3. Also, the water permeable block has a percentage of void between 5% and 50%.
Inventors:
Yoshihiko Ito
Application Number:
JP16244896A
Publication Date:
September 20, 2006
Filing Date:
June 04, 1996
Export Citation:
Assignee:
Takashima Co., Ltd.
International Classes:
E02B11/00; E02D3/10; (IPC1-7): E02B11/00; E02D3/10
Domestic Patent References:
| JP4000103Y2 | ||||
| JP4046126U | ||||
| JP62031147U | ||||
| JP6055648A |
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Sadao Muramatsu
Ryo Hashimoto
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