scope:

This Japanese Industrial Standard specifies the steel pipe sheet piles used for sheathing, coffering ¹⁾, foundation of structures and the like. The dimensional range covered by this Standard is normally the outside diameter of steel pipe body 500 mm to 2 000 mm.

NOTE 1 The construction of steel pipe sheet pile and the designation of each part are shown in figure 1 to figure 3. A steel pipe body is defined as a blank pipe as it is or blank pipes jointed by circumferential welding at shop (hereafter referred to as "jointed pipes"). A steel pipe sheet pile is defined as a steel pipe body connected with couplings. Some steel pipe sheet piles are with no coupling, depending on the using condition or body construction.

In the steel pipe sheet piles which are connected at the site, the piles in the upper, the middle and the lower positions are designated as the upper steel pipe sheet pile, the middle steel pipe sheet pile and the lower steel pipe sheet pile, respectively. When there are two or more middle steel pipe sheet piles, the one in the lowest shall be designated as the first middle steel pipe sheet pile, and the one in the second, as the second middle steel pipe sheet pile. Further, the members used for connecting together the couplings of the steel pipe sheet piles when connecting the steel pipe sheet piles on site are designated as the connecting couplings.

NOTE 2 The shop circumferential weld refers to circumferential welding, performed by the manufacturer, for connecting a blank pipe to another blank pipe to make a steel pipe body, and the site circumferential weld refers to circumferential welding, performed by the constructor, for connecting a steel pipe sheet pile to another steel pipe sheet pile.

Note ¹⁾ Coffering means enclosing wall intended for preventing water influx.