Type IV steel sheet piles are designed in accordance with BS8081. Anchors should be placed as close to the bulkhead as possible, but sufficiently far apart to fully utilize passive earth pressure to resist anchor tension. When increasing the section modulus or moment of inertia is necessary to accommodate high bending moments along a portion of the pile length, installing an appropriately sized steel plate at the base of the pile shaft to locally enhance the engineering performance of the section may be an economical option.

The vertical position should be above the groundwater level, but with adequate cover. When piles are very long or the pile shaft is located at the top of the pile, this option is often considered more economical than simply selecting Type IV steel sheet piles. ISP, JSP, KSP, NKSP, JFE, and JFESP steel sheet piles perform well, and FSP, NS-SP, SKSP, TSP, and GSP steel sheet piles also offer good profiles.

This is particularly important when the anchor tension is non-horizontal, such as when tying the anchor to a wall cap. The effects of various load cases are considered.

Geotechnical loads are calculated based on representative soil parameters and take into account working load values. SP-IV sheet piles are designed for static loads with a safety factor of 2.0 (uncorroded) and 1.75 (corroded). Separate additional tie rods are provided for the quick-release hooks. Bollard loads are not considered in the main anchor system. SP-4 sheet piles should be located sufficiently far apart to avoid adding additional load to the wall. Type IV sheet pile dimensions are 400x170x15.5.

Specifications