Steel sheet piles are structures with linkage devices on the edges. They can be used as walls to retain water or soil. They are a commonly used sheet pile cofferdam and can be combined to form cofferdams of various shapes. In addition, steel sheet piles have very high strength and can be easily driven into hard coatings. Their waterproof properties are very good, and they will not be affected even when constructed in deep water. These interlocking steel or concrete elements are commonly used in applications such as retaining walls, flood protection systems, and foundation support structures. Understanding the allowable stress for sheet piles is crucial for ensuring their structural integrity and performance in demanding environments.