JZ Series steel sheet piles include JZ112, JZ120, and JZ127, manufactured by Samuel Roll Form Group. This section specifies the minimum safety requirements for protecting floor and wall openings in Seattle Port construction projects. The factor of safety against overturning (FSOT) should be determined by summing the resisting moments around the wall toe and dividing the sum by the sum of the driving moments around the wall toe. This is intended to prevent injuries to employees and visitors from falls or material dropping through open floor, roof, or wall openings, or other open walking/working surfaces. The JZ112 corner of a JZ120 precast module is typically assumed to be the toe of a JZ127 wall. This indicates that the effects of early ground slip on the MBU wall could lead to failure.

Common sizes of EZ Series steel sheet piles are EZ80, EZ88, and EZ95. The eccentricity of the resultant force location acting on the wall base should be determined and compared to the maximum allowable eccentricity. Earth pressure on retaining walls often ignores the so-called "overall stability"; this refers to the geotechnical loads associated with overall slope stability. Under actual loading conditions, EZ 80 anti-sliding stability and EZ 95 anti-overturning stability should be met. Furthermore, under loading conditions consisting of a 1.5-degree horizontal slope and a 1.0-degree vertical slope (with the toe at the front of the wall), each layer above the bottom layer should meet anti-sliding and overturning stability requirements.

Specifications