Pipe Floater for Dredging

In spite of its lightweight andcompactness

Large Buoyancy

Soft and Tough Pipe-Floater
Made of FOAMACE“”
Outer layer

Free from rusting and sinking dueto water seepage● Chemically cross-linked
closed cell structure
Cramp"Wooky" is a pipe floater of laminated circular structure, obtained by interlayer
thermal fusion of chemically cross-linked polyethylene foam of Furukawa Electric "FOAMACE".
Wooky can be mounted directly on sand discharge pipes, enabling compact
and simple installation.
Eliminating sinking due to water seepage, Wooky achieves stabilized buoyancy
and durability, thereby exhibiting superior performance.

Chemically cross-linked polyethylene foam “FOAMACE”

Steel pipe

1mm

[Draft Balance]■Preconditions
560-mm dia. sea-floating pipe of 6,000mm in length plus 560-mm dia.
sleeve Standard design using four units of Wooky(Size of Wooky: 560-mm inner dia. x 1,240-mm outer dia.
x 1,000-mm length)

Stabilized Buoyancy

Ease of Handling

Environment and Safety Is Taken into Account

The fine closed cells individually exert buoyancy, and they do not absorb water. Moreover,since Wooky has a solid structure, it won't sinkeven if it is damaged by impact causing an
opening or hole.

For its lightweight and compactness, Wooky iseasy to handle, allowing easy mounting on tosand discharge pipes. It can be used to float inshallow water areas and narrow channels.

Wooky uses neither chlorofluorocarbons forfoaming nor hazardous substances leaching
into sea water. Moreover, its resiliency reduces
impacts on equipment in case of collisions.

In designing and manufacturing,
Wooky is tailored for its size andmounting numbers according to
specified pipes to be used.

Long-Term Stability

High Transportability and Economic Efficiency

Wooky neither corrodes due to sea water norsinks due to seepage, thus maintaining stabilized buoyancy for long periods.

Wooky saves storage space and upgrades
transportation efficiency. Moreover, it can beused repeatedly, resulting in much improved
economic efficiency.

It is best suited for transportation of pressure
feed tubes in dredging construction.
● Wooky is best suited for piping in landfill sites, since it floats in shallow waters.
● Wooky allows transporting over a soft muddy ground.
● Wooky can be towed by a small ship.

Water surface

348mm
539mm

722mm

Muddy water content: 0% (Specific gravity: 1.2)
Water submersion ratio: 23%
Draft: 348mm

Muddy water content: 50% (Specific gravity: 1.2)
Water submersion ratio: 41%
Draft: 539mm

Muddy water content: 100% (Specific gravity: 1.2)
Water submersion ratio: 60%
Draft: 722mm[Guideline for Standard Wooky Design] (Specific gravity of muddy water: 1.2; Draft in fully-loaded operation: 60%)
Sand discharge pipe: nominal dia. (mm)200250

300

355

410

510

560

610

630

660

685

710

760

Sand discharge pipe: inner dia. (mm)

204.7

254.2

304.7

355.0

410.0

510.0

560.0

610.0

630.0

660.0

685.0

710.0

760.0

Sand discharge pipe: thickness (mm)

5.8

6.6

6.9

9.0

9.0

9.0

9.0

12.0

12.0

12.0

12.0

12.0

Sand discharge pipe: length (mm)Number of Wooky used: (unit per steel pipe)
Inner dia. of Wooky (mm)Outer dia. of Wooky (mm)Length of Wooky (mm)

5,500

5,500

5,500

6,000

6,000

6,000

6,000

6,000

6,000

6,000

6,000

6,000

12.0
6,000

4

44

4

4

4

4

4

4

44

5

5

210

260

310

360

420

510

560

610

630

660

690

710

760

490

590

690

840

950

1,140

1,240

1,390

1,430

1,490

1,540

1,470

1,560

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

＊ Designs under other conditions listed above are available, with different sizes of sand discharge pipe and different numbers of Wooky unit. Please make inquiries.

12

Mounting Procedures■ Example of mounting using metal cramp( Sand discharge pipe: 810-mm dia. x 6,000mm; Five Wooky units are used
per one length)

1 Metal cramp and Wooky (lower half) are arranged.

●Example of Wooky mounted using metal cramps for sea water use.

■ Mounting using steel band (for freshwater)

An exclusive tool is needed.

2 Sand discharge pipe is laid down.

As shown in the photo, put the outside steel band on the binding tool to let it through, and fasten the band by moving the leverback and forth.

3 Wooky (upper half) is overlaid. The size is designed to be a little tight toprevent coming off. Press it down to fit properly.

●Example of Wooky mounted using steel bands for freshwater use.

Caution

4 Fasten the bolt firmly so that the metal cramp sinks somewhat into thesurface.

3

Wooky is flammable, being made of foamed polyethylene.
When a fusion burner and the like is used for disassembly, takeextra care that Wooky does not catch fire. Also watch out for fire
during storage.

Pipe Floater for Dredging

Wooky can be used in combination
with steel drum floaters.
Wooky can be used in combination with steel drumfloaters, when line elongation is needed.
The drum floaters would sink, making a smooth transition.

Example of Use

4Pipe Floater for Dredging■ Track Record of Wooky (Abstract of typical construction work)

Name of construction work

Sand discharge pipe dia. (mmφ)

Banyu river, Kanagawa-pref.

510

Kumamoto port, Kumamoto-pref.

340

Lake Kasumigaura, Chiba-pref.

270

Island City, Hakata bay, Fukuoka-pref.

760

Toyano tideland, Niigata-pref.

160

Port Island, Hyogo-pref.

560

Tokoname offshore, Ise bay, Aichi-pref.

355

Central Japan International Airport, Aichi-pref.

800

Multi-purpose dam, Yamagata-pref.

310

Aritificial beach, Nachi bay, Wakayama-pref.

560

Singapore

700●Typical loading of Wooky on a truck.

■ Frequently Asked Questions aboutWooky(Below will be given answers to frequently asked questions.)

Q.1 Is Wooky free from getting chipped and crushed?
A

There are varieties of plastic foams, but Wooky is madeof chemically cross-linked polyethylene. Wooky has softness, and seldom cracks or buckles.
●Wooky can be stacked in many ways to ensure space-saving storage.

Q.2 Does Wooky fall to pieces due to ultraviolet ray?
AWooky has a cylindrical layered structure made ofseveral tens of layers. The outermost layer does
not worn out in ten years or so. Although its lustered color on the surface fades away, its strengthand buoyancy does not degrade.

safe against being dragged on earth and sand?
Q.6 IsDoWooky
pebbles no damage?

Aand algae, do they attach on Wooky?
Q.3 Shellfish
If so, how can they be removed?

AThey certainly attach since Wooky is made of nontoxic materials. But Wooky has a smoother surface
than steel floaters, so that it seems to gather lessshellfish and algae. If they attach, remove them bypounding after drying.

possible to exchange the steel pipes floated on
Q.4 Istheitsea?

A

It is difficult since they are half immersed in thesea.

Q.5 Why is Wooky colored into two parts?
A5The outermost surface uses the reinforced gradeof FOAMACE, and it is colored orange for the purpose of warning indication. While, the main bodyis colored black to enhance weatherability.

Since Wooky has a solid foam structure, it does not sinkeven when damaged by pebbles. Moreover, even when itis dropped from a truck, rolled on land or plunked on its
end, Wooky does not sink during usage.

Q.7 Can Wooky be used under the sea?
AUnder the deep sea, Wooky crushes since it is not pressure-proof. The maximum depth of using Wooky is its selfdiameter.

Q.8 Is Wooky strong against fire?
AWooky is flammable, being made of foamed polyethylene.
When a fusion burner is used, take extra care that Wooky
does not catch fire due to direct exposure to flame or molten metal.

any particular attention to be given as to transportaQ.9 Istionthereand storage?

ADuring transportation, fix Wooky firmly to take care of its
lightweight. Also watch out for fire carefully during storage.

For Workboats

Furukawa Anchor Buoy D-type
FOAMACE-made anchor buoy that is lightin weight, high in softness and toughness.
Best suited for workboats which require
frequent casting and hoisting of anchor.
Features■ Lightweight
It is half as heavy as steel anchor buoys.

■ Non Water-AbsorbingIt does not absorb water since the floater is made ofFOAMACE, a chemically cross-linked polyethylene foamhaving closed cell structure.

■ High Safety
Even when collided with by any chance, it eases impact
thanks to its cushioning effects.

■ High Durability
FOAMACE does not rust out.

■ Provided with Holes on Metal Fitting Convenient forHanging and Tugging

DdStructure and MaterialR■ Floater
FOAMACE, a chemically cross-linked polyethylene foam,is laminated in a circular form and its layers are thermally
fused together.

h H■ Metal Fitting
Made of steel, rustproof coated.

Product No.

Max. buoyancy

D mmφd mmφH mmh mm

R mmφ

Mass

D-200
D-300

200kg

840150700

500

40Approx. 66kg

300kg

1000

150700500

40Approx. 72kg

D-600

600kg

1000

150

1200

1000

40Approx. 102kg* Please make inquiries for special sizes.

Cautions When Using

This product is flammable, being made of foamed polyethylene.
In case of using fire, cover the product with flame-resistant sheets.

6SALES COMPANIESFurukawa Sangyo Shanghai Co., Ltd.
Rm.22c11 Jiu Shi Fu Xing Mansion, No.918, Huai Hai Zhong Road, ShanghaiTel. +86-2164156394
Furukawa Sangyo（H.K.）Ltd.
Unit A, 18F Empire Land Commercial Centre No.81-85 Lockhart Road, Wanchai, Hong Kong
Tel. +852-28652831
Furukawa Sangyo（MALAYSIA）SDN.BHD.
1106. 11th Floor, Amcorp Tower A, Amcorp Trade Center Persiaran Barat, 46050, Petaling Jaya,
Selangor Darulehsan, Malaysia
Tel. +603-79577000
Furukawa Sangyo（THAILAND）LTD.
23th Floor, Charn Issara Tower 1, 942/168, Rama 4 Road, Suriyawongse Sub-District, Bangkok
District, Bangkok, Thailand, 10500
Tel. +66-2267-2012
Furukawa Sangyo（INDIA）LTD.
Flat No.806 Antariksh Bhawan, K.G. Marg. New Delhi 110001
Tel. +91-11-4717-7177 Fax. +91-11-4717-7113
Furukawa Electric Singapore Pte. Ltd.（FES）
10 Anson Road, #25-07/08 International Plaza, Singapore 079903
Tel. +65-6224-4686 Fax. +65-6224-2362
Furukawa Electric Europe Ltd.（FEEL）
3rd Floor, Newcombe House, 43-45 Notting Hill Gate, London W11 3FE, United Kingdom
Tel. +44-20-7313-5324 Fax. +44-20-7313-5310
http://www.furukawa.co.uk/

MFG.

Foamed Products Division, Energy and Industrial Products Company
Head office : Marunouchi Nakadori Bldg., 2-3, Marunouchi 2-chome, Chiyoda-ku, Tokyo, Japan 100-8322
Tel. +81-3-3286-3894 Fax. +81-3-3286-3472

Information in this catalogue is subject to change without notice.
This catalogue is printed using environment-friendly paper and ink.

PE-040 2A3 TR 10