Name |
Internal Dimension |
External Dimension |
Height |
Weight(kg) |
EM-J |
400 |
560 |
800 |
240 |
EM-Ⅱ |
500 |
660 |
800 |
285 |
EM-Ⅱ(B) |
400 |
640 |
1000 |
470 |
Sapporo City Type (with the bottom) |
500 |
660 |
900 |
380 |
EM-Ⅰ(A) |
600 |
840 |
1000 |
690 |
EM-Ⅰ(B) |
800 |
1100 |
1200 |
1360 |
EM-O |
1100 |
1400 |
1000 |
1500 |
Osmotic Box 1860 |
1500 |
1860 |
1200 |
2774 |
EM-F |
600/800 |
840/1100 |
1000 |
870 |
Conditions for preventing clogging
Permeability coefficient 0.7 – 2.5cm / sec
Porosity 20-30%
Aggregate particle size 20 – 13mm
* Infiltrating soil particles of 2mm or less. (Report by Ministry of Construction, present Ministry of Land, Infrastructure, Transport and Tourism, Civil Engineering Research Institute)