Straight web-type sheet piles ×
Cellular structure with Comprehensive Support
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Straight web-type sheet piles × Cellular structure with Comprehensive Support
Combining straight web-type sheet piles with a Cellular structure delivers an optimal steel structure tailored for deep-depth projects.
Advantages of this package
- The structure can be constructed using a single material and is applicable to deep-water projects with water depths of more than 20 meters.
- Nippon Steel’s straight steel sheet piles maximize the features and potential of cellular structures.
- Nippon Steel delivers total support, from material supply to design and construction.
Table: Cellular Structure Lineup
| CLOSED CELLULAR SYSTEM | OPEN CELLURLAR SYSTEM | |
|---|---|---|
| Circular cell | Diaphragm cell | OPEN CELL SHEET PILE™ (OCSP™) |
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OPEN CELL SHEET PILE™, and OCSP™ are trademarks of PND Engineers, Inc.
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<Overview> <Typical Applications> |
<Overview> <Typical Applications> |
<Overview> <Typical Applications> |

NIPPON STEEL’S Straight web-type sheet piles for Cellular System


Sectional properties

| Type | Dimension | Per pile | Per 1 m of pile wall width | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Effective width W mm |
Effective width h mm |
Thickness t mm |
Sectional area cm2 |
Moment of inertia cm4 |
Section modulus cm3 |
Unit mass kg/m |
Moment of inertia cm2/m |
Moment of inertia cm4/m |
Section modulus cm3/m |
Unit mass kg/m2 |
|
| NS-SP-FL | 500 | 44.5 | 9.5 | 78.57 | 184 | 45.7 | 61.7 | 157.1 | 396 | 89 | 123 |
| NS-SP-FXL | 500 | 47.5 | 12.7 | 98.36 | 245 | 60.3 | 77.2 | 196.7.1 | 570 | 121 | 154 |
ADVANTAGES OF NIPPON STEELʼS Straight web-type sheet piles
Interlock Strength
High interlock strength for greater wall heights and load capacity. Ideal for deep berths, deep cofferdams, and heavy-duty docks.
| Type | Tensile Strength (MN/m) |
|---|---|
| NS-SP-FL | 3.92 |
| NS-SP-FXL | 5.88 |
※The above values are catalog (ultimate) values.
Design values shall be determined in accordance with applicable standards (service/allowable limits).
Swing Angle
Large swing angle for tighter diameters and smaller footprints. Ideal for dolphins, bridge piers, and walls in confined spaces.(e.g., urban areas)


Supply capacity for long sheet pile
NS-SP Straight web-type sheet piles available in lengths over 30 meters.
Application Overview by Ground Condition
| Tie-back system | Circular cell | OPEN CELL SHEET PILE™ | |
|---|---|---|---|
| Sound sandy ground | 20 m≦ | 20~25 m | 30 m≦ |
| Soft ground without ground improvement |
Not applicable | Not applicable | 20 m≦ |
※The table presents general examples and is not based on precise technical analyses.
※Results may vary considerably depending on ground conditions and applicable design standards.
Example projects
OCSP™
Heavy Offloading Berth with Access Causeway, Russia, Russia


Marine Facilities for a Cement Plant, Philippines
Main Berth
LCT Berth
Circular cell
Artificial Island, Japan

Artificial Island, Hong Kong

Nippon Steel Technical Support
• Preliminary assessment of current design
• Recommendations on appropriate structure types
• Concept drawings
• Order-of-magnitude estimates of steel quantities and lead time
• Material selection based on project conditions
• Guidance on sheet pile fabrication and jointing
• Corrosion protection recommendations based on past projects
For inquiries, the following information is helpful (not required):
• Application
• General ground conditions
• Overall wall height
• Water depth
• Seismic conditions
Nippon Steel offers a wide range of technical solutions and can also introduce PND Engineers, Inc. Please feel free to contact us for more information.
Learn more about the Open Cell Method


