Polluted water diffusion prevention boom
OK Silt Fence
Outline
OK Silt Fence is a wide variety of booms do not diffuse polluted water during river or harbor construction.
OK Silt Fences prevent the diffusion of polluted water generated in civil engineering work at harbors, coasts, rivers, lakes, etc. and minimize the impact on the environment. Polyester skirts prevent the diffusion of silt (fine soil particles) that cause water pollution. There are sales and rentals, and you can choose according to the period of use.
Characteristics
OK Silt Fence fixed system suspended type
This is the most often used boom type, which is actively utilized for preventing pollution diffusion during harbor, coastline and river construction work. It is possible to select the float shapes and diameters according to the usage environment. The floats are covered with high-strength PVC tarpaulin, and a higher level of strength and durability is realized by using reinforcing belts having a low expansion and contraction ratio, reliable sewing technology, etc.
Main installation locations: Harbors, coastlines, rivers, lakes and marshes during revetment and facility construction work
In the arrangement of the floats, there are connected float types which have continuity providing a moderate wave-absorbing ability, and non-connected float types which use “openings” to disperse and reduce the pressure from tidal currents.
Skirt connection method Integrated type and separated type
OK Silt Fence fixed system self-standing type
The skirt is fixed to H-section steel on the bottom of the sea, and supports itself under the water. These booms are mainly used in civil engineering construction work at depths of 15m or greater to prevent the diffusion of pollution generated close to the sea bed. By using in combination with suspended type booms, a higher pollution diffusion prevention effect is obtained.
Main installation locations: Large harbors with water depths greater than 15m, etc.
Example of a combined installation of a fixed system self-supporting type fence and fixed system suspended type fence
OK Silt Fence float-and-sink system suspended type
By inflating and releasing the air in the rubber floats, it is possible to float and submerge the boom in a short period of time. Not only does this allow the entry and exit of construction vessels, but it protects the boom from damage by allowing it to be submerged during bad weather conditions such as typhoons.
Main installation locations: Harbors and coastlines where there is frequent entry and exit of construction vessels
Float-and-sink system suspended type
OK Silt Fence grab frame type
These silt booms are specialized for use with grab vessels utilized in dredging construction work. In addition to preventing pollution diffusion while moving the sites even for construction work extending over large areas, the booms will be effective for scouring prevention if the booms are installed around jetties or pier foundations.
Main installation locations: In harbors, coastlines, rivers, lakes and marshes, jetties, pier foundations, etc. during dredging or riprap construction work
OK Silt Fence Rental Service Information
For pollution diffusion prevention during short-period construction work, the OK Silt Fence rental service can be used.
For customers who only require the use of OK Silt Fences for a fixed construction period, MAEDAKOSEN is offering a rental service relating to the products described below. Not only does this enable limiting of the total cost compared to the case of purchasing the product, but the trouble of maintaining and administering the product after use will not be required.
- *In principle, rental products will be delivered on vehicles. Cranes, etc. should be arranged separately.
- *In cases such as when installation or removal work or mooring materials are necessary, separate estimates will be provided
| Product No. | Skirt | Float | |||
|---|---|---|---|---|---|
| Standard （No.） |
Material | Shape | Diameter （mm） |
Material | |
| OKS-300 | 300 | Polyester | Unconnected type | ø300 | Expanded polystyrene |
| OKS-300B | 300 | Connected type | ø300 | ||
| 500 | |||||
| OKS-400 | 500 | ø400 | |||
| 800 | |||||
Standard / specification
OK Silt Fence fixed system suspended type
| Product No. | Skirt | Floats | ||||
|---|---|---|---|---|---|---|
| Standard （No.） |
Tensile strength（N/3cm） | Material |
Shape |
Diameter （mm） |
Material | |
| OKS-300 | 300 | 3,040 or more | Polyester | Unconnected float type |
ø300 | Expanded polystyrene |
| OKS-300B | 300 | 3,040 or more | Connected float type |
ø300 | ||
| 500 | 5,490 or more | |||||
| OKS-400 | 500 | 5,490 or more | ø400 | |||
| 800 | 8,340 or more | |||||
| OKS-600 | 500 | 5,490 or more | ø600 | |||
| 800 | 8,340 or more | |||||
| Product No. | Skirt | Float cover | ||
|---|---|---|---|---|
| Standard （No.） |
Thickness （mm） |
Tensile strength （N/3cm） |
Material | |
| OKS-300 | 300 | 0.7 to 0.9 | 1,350 to 1,961 or more | PVC tarpaulin |
| OKS-300B | 300 | 0.7 to 0.9 | 1,350 to 1,961 or more | |
| 500 | 0.7 to 1.0 | 1,350 to 2,941 or more | ||
| OKS-400 | 500 | 0.7 to 1.0 | 1,350 to 2,941 or more | |
| 800 | 0.7 to 1.0 | 1,350 to 2,941 or more | ||
| OKS-600 | 500 | 0.7 to 1.0 | 1,350 to 2,941 or more | |
| 800 | ||||
| Product No. | Connecting parts and Anchor connecting parts (D-ring metal parts) |
Tension belt | |||
|---|---|---|---|---|---|
| Diameter (mm） |
Tensile strength (kN) |
Thickness x width (mm) |
Tensile strength (kN) |
Material | |
| OKS-300 | Φ12 | 44.1 or more | 3×50 | 47.0 or more×2strands (Both sides) |
Polyester |
| OKS-300B | Φ19 | 100.0 or more | 3×100 | 117.6 or more×2strands (Both sides) |
|
| OKS-400 | Φ19 | 100.0 or more | 3×100 | 117.6 or more×2strands (Both sides) |
|
| OKS-600 | Φ25 or Φ30 | 176.5 or more | 3×150 | 176.5 or more×2strands (Both sides) |
|
- * An intermediate float type (OKS-300M-600M) is also available, which prevents damage to the stretched part without sagging at low tide by the action of the pressure-resistant float in the middle of the skirt.
- * Custom-made type with higher strength (OKS-600 custom-made type, 1-point mooring method, OKS-600-800 custom-made type, 2-point mooring method) is also available.
- * We can also respond to customer’s requesting specification and standard.
OK Silt Fence fixed system suspended type
| Product No. | Skirt | Float | ||||
|---|---|---|---|---|---|---|
| Standard （No.） |
Tensile strength （N/3cm） |
Material | Diameter （mm） |
Material | Cover material （mm） |
|
| OKS-300H | 300 | 3,040 or more | Polyester | ø300 | Expanded polystyrene | PVC tarpaulin 0.9 |
| Product No. |
Connecting parts and Anchor connecting parts |
Tension belt | ||
|---|---|---|---|---|
| Diameter （mm） |
Tensile strength （kN） |
Tensile strength （kN） |
Material | |
| OKS-300H | ø12 to 19 | 44.1or more to 100.0 or more | 50 to 117.6×2strands (Both sides) |
Polyester |
OK Silt Fence float-and-sink system suspended type
| Product No. | Skirt | Float | Tension part | ||||
|---|---|---|---|---|---|---|---|
| Standard （No.） |
Tensile strength （N/3cm） |
Material | Diameter （mm） |
Material | Tensile strength （kN） |
Material | |
| OKS-400SI | 500 | 5,490 or more | Polyester | ø400 | Synthetic rubber | 100.0 or more | Synthetic rubber |
| 800 | 8,340 or more | ||||||
| OKS-600SI | 500 | 5,490 or more | ø600 | 200.0 or more | |||
| 800 | 8,340 or more | ||||||
- * OK Silt Fence float-and-sink system suspended type will only be made when receiving order.
OK Silt Fence grab frame type
| Product No. |
Skirt | Connecting parts and Anchor connecting parts (D-ring metal parts) |
Reinforcing belts | |||
|---|---|---|---|---|---|---|
| Standard （No.） |
Tensile strength （N/3cm） |
Material | Diameter （mm） |
Tensile strength （kN） |
Material | |
| OKS-G | 300 to 800 | 3,040 or more to 8,340 or more |
polyester | ø12 | 30 to 60× 2 strands （Bothsides） |
polyester |
| OKS-Pi | ||||||
- * OKS-G is for grab frame, OKS-Pi is for pier
- * OK Silt fence grab formwork is a made-to-order product.
Related products / construction methods
boom / disaster recovery / ocean / river