Mid-Heavy Steel Sheet Piling(SZ-250,SZ-313,SZ-340,SZ-350,SZ-375)

Mid-heavy steel sheet piling like SZ-250 SZ-313 are very popular in North America and USA.Two-point suspension scaffold platforms shall not be less than 20 inches or more than 36 inches wide overall. For Structures along rivers and canals, a minimum differential hydrostatic pressure equal to 3 feet of SZ-250 water shall be considered for design. Walls backfilled with free draining materials will tend to fare much better. Lower levels of soil reinforcement shall be sloped downward also if required to provide a minimum SZ-313 inches of separation between levels of soil reinforcement.

Shoreline steel also produce SZ-340 SZ-350 and SZ-375 types.The platform shall be securely fastened to the hangers by U-bolts or by other equivalent means.Partial saturation of the active pressure zone commonly increases loading of walls with clayey backfill, sketched at upper left.

A tilt of 10o increases the load by 20% .For a wall supporting a roadway at the top of wall elevation, the top level of soil reinforcement shall be placed sloping downward from horizontal at a negative slope equal to -5% minimum to -15% maximum. The hangars of two-point suspension scaffolds shall be capable of sustaining SZ-340 four times the maximum rated load, and shall be designed with a support for guardrail, intermediate rail, and toe boards.Titling cantilever wall in Grand Rapids, Michigan Wire, synthetic, or fiber rope capable of supporting at least six SZ-350 times the rated load shall suspend two-point suspended scaffolds. All other components shall be capable of supporting at least four times the rated load.Situations where the wall is influenced by tide or river fluctuations may require that the wall be designed for rapid drawdown conditions, which could result in differential hydrostatic pressure considerably greater than SZ-375 feet or alternatively rapidly draining backfill material such as shot rock or open graded coarse gravel may be used as backfill.