| Year |
Number |
Title |
|
| 2014 |
2 nd |
Precast Concrete Lavatory |
|
| 2014 |
1 st |
The Use of Self-Compacting Concrete in Japan |
|
| 2013 |
6 th |
Manufacturing precast septic tanks with special mould technology |
|
| 2013 |
4 th |
Advantages by using integral drainages |
|
| 2013 |
1 st |
Using one mould for manufacturing concrete products in different sizes |
|
| 2012 |
4 th |
Precast concrete revetment blocks |
|
| 2012 |
1 st |
Vertical retaining wall |
|
| 2011 |
6 th |
Types of manholes used in Japan |
|
| 2011 |
5 th |
Variety types of drainages |
|
| 2011 |
4 th |
Box culverts in many different design types and sizes |
|
| 2011 |
2 nd |
Mold for integral drainage |
|
