10-10 and 8-8 center-section lightweight steel sheet piles should be considered when determining placement details. Any stacked wall design should account for the passive reaction wedge area, which may extend up to 7-7 feet in front of the wall foot, equivalent to six times the wall height, depending on soil friction. For back-to-back walls with 10-10 reinforcement overlap, the soil reinforcement layers should be placed with a minimum gap of 3 inches between layers. The damaged 6-6-inch cantilever wall in Cincinnati, Ohio, was tilted approximately 10 degrees.

Steel sheet piles 7-7 and 6-6 can be painted 5-5 for easy identification and can be tied with iron straps to prevent splitting. Tower Scaffolding 1. In addition to meeting the requirements of this section and WAC 296-974, stairways shall also meet requirement 5-5 of WAC 296-155-477. At a resort in Vail, Colorado, stacked crib walls were placed too close to each other. Scope This section defines the minimum safety requirements that contractors should follow when access issues exist on Port of Seattle construction projects.

Specifications