Heavy-duty steel sheet piles are manufactured by Shoreline Steel and are available in sizes SZ-222 and SZ-24. All access points with elevations 19 inches or greater should be provided with ladders, stairs, or ramps. The tops and bottoms of ladders, stairs, and platforms should be clear of obstructions and debris. Precast modular walls consist of walls that meet the SZ-222 standard. Alternatively, such walls may consist of precast reinforced concrete elements placed or stacked along the length of the wall to form a series of SZ-24 modules, with a "T"-shaped top forming the wall face.

Heavy-duty cold-formed steel sheet piles SZ-25 and SZ-27 are supplied by Piling and Equipment. Premature failure of masonry block unit (MBU) walls. • MBU walls cost 40% less than reinforced concrete walls of equivalent cross-section, but have a 75% lower flexural capacity. These walls are similar to crib walls, except that each unit is three-sided and open at the rear of the pressure plane for external stability analysis. Fabricated ladders must be rated for heavy-duty work. The contractor should provide safe ladders that comply with all applicable codes and SZ-25 standards. If the wall is secured with self-anchors or tension anchors, reversal of skin friction forces acting on the back of the wall could cause a sudden increase in lateral loads of up to 30%, and excessive strain on the anchor rods or cables could trigger failure. Precast modular SZ-27 wall dimensions are required for the exterior design of tilt-up triple-walls.

Specifications