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Larssen sheets piles are steel sheet piles whose structure consists of interlocking sections forming a sheet pile retaining wall. Each section of steel sheet pile connects to the previous section at a 180-degree angle, forming a uniform wall with alternating grooves and protrusions.
Larssen Steel Sheet Pile Specifications
Sheet Type | 'w' Width (m) | 't' pan thickness (mm) | 's' web thickness (mm) | 'd' pan depth (mm) | 'p' pan width (mm) | Cross section area (cm2/m) | Weight (single pile) | Weight (kg/m2) | Permissable working stress (N/mm2) | Section Modulus (cm3/m) | Moment of Inertia (cm4/m) | Maximum bending moment (kNm/m) |
PU12 | 0.6 | 9.8 | 9.0 | 360 | 258 | 140 | 66.1 | 110.1 | 200 | 1200 | 21600 | 240 |
PU18-1 | 0.6 | 10.2 | 8.4 | 430 | 269 | 154 | 72.6 | 121.0 | 200 | 1670 | 35950 | 334 |
PU22-1 | 0.6 | 11.1 | 9.0 | 450 | 297 | 174 | 81.9 | 136.5 | 200 | 2060 | 46380 | 371 |
PU22+1 | 0.6 | 13.1 | 10 | 450 | 297 | 192 | 90.4 | 150.7 | 200 | 2335 | 52510 | 467 |
PU28-1 | 0.6 | 14.2 | 9.7 | 452 | 339 | 207 | 97.4 | 162.3 | 200 | 2680 | 60580 | 536 |
Corner Sections: In situations requiring complete enclosure of the cofferdam (e.g., high groundwater level, poor geological conditions), various corner sections can be used. This allows for better retention of water and fine particulate matter. Using corner sections results in specific excavation dimensions, depending on the combination of piles/corner sections used.
Corner Section Specifications
Corner Pile | Weight (kg/m) | 't' thickness (mm) | Steel Grade | Permissible working stress (N/mm2) |
Omega 18 | 18.0 | 8 | S270 | 200 |
C14 | 14.4 | 10 | S270 | 200 |
Delta 13 | 13.1 | 8 | S270 | 200 |
C9 | 9.3 | 10 | S270 | 200 |
What are the applications of Larssen steel sheet piles?
Larssen sheet piles are commonly used for temporary or permanent cofferdams, retaining walls, and foundation construction. Available in various sizes, Larssen sheet piles are also frequently used in marine engineering due to their interlocking sections providing excellent watertightness. The pile length, penetration depth, and foundation loads must be considered based on geological conditions.
What are the advantages of Larssen sheet piles?
The sheet pile section design aims to minimize weight without sacrificing strength and durability, achieving an extremely high strength-to-weight ratio. Larssen sheet piles can be up to 18 meters in length, combining low deflection, good driving performance, and durability. Piletec offers Larssen heavy-duty sheet pile sections in various sizes and lengths.
