The present invention discloses an end plate system for joining spun piles together comprises a top end plate (100) mounted at a bottom end of a first spun pile: and a bottom end plate (200) mounted at a top end of a second spun pile; wherein the end plates (100, 200) respectively have an interlocking surface that is formed with a plurality of segmental protrusions (110, 210) and segmental recesses (120, 220) arranged in an alternate configuration; characterized in that each segmental protrusion (110, 210) has a first radial interlocking profile (111, 211) and a second radial interlocking profile (112, 212) that extend towards the central portion of the end plates (100, 200); wherein the top end plate (100) and the bottom end plate (200) are mated by registering the segmental protrusion (110, 210) of one end plate to the segmental recess (120, 220) of another end plate and through a rotating movement about the central axis of the mated end plates (100, 200), a first interlocking joint (300) is formed by two adjacent first radial interlocking profiles (111, 211) in full surface contact, and a second interlocking joint (400) is created by inserting a pin (402) into a passageway (401) formed between two adjacent second radial interlocking profiles (112, 212).

The invention relates to apparatus and methods for constructing diaphragm walls. A guideway tube is provided for casting into a concrete panel along a height of a face of the concrete panel, comprising: an elongate guideway track comprising at least one elongate side wall and an elongate slot along the at least one elongate side wall, the elongate slot having a first width; and, an elongate closure panel comprising: a rear panel portion configured to close the elongate slot enclosing an elongate internal volume, and, a front panel portion of a second width greater than the first width. Preferably the rear panel portion is a close fit within elongate slot sufficient to resist the ingress of slurry and concrete. Preferably the rear panel portion is configured to engage the elongate slot in a manner configured to resist compression forces.

The invention relates to apparatus and methods for constructing diaphragm walls. A guideway tube is provided for casting into a concrete panel along a height of a face of the concrete panel, comprising: an elongate guideway track comprising at least one elongate side wall and an elongate slot along the at least one elongate side wall, the elongate slot having a first width; and, an elongate closure panel comprising: a rear panel portion configured to close the elongate slot enclosing an elongate internal volume, and, a front panel portion of a second width greater than the first width. Preferably the rear panel portion is a close fit within elongate slot sufficient to resist the ingress of slurry and concrete. Preferably the rear panel portion is configured to engage the elongate slot in a manner configured to resist compression forces.

A structural pile sheet spur including a void creating section located in a fore part of the spur, a pile sheet interfacing section located in an aft part of the spur, and a fluid delivery passageway located in or adjacent to the pile sheet interfacing section.

A structural pile sheet spur including a void creating section located in a fore part of the spur, a pile sheet interfacing section located in an aft part of the spur, and a fluid delivery passageway located in or adjacent to the pile sheet interfacing section.

A system that includes a plurality of front faces configured to be arranged end-to-end in a series. Adjacent front faces are connected together by a different X-shaped or X-wye connector that facilitates installation of reinforcement tail walls. At least one tail wall is connected to each connector. A redundant reinforcing tail wall may be constructed and attached to one of the connectors to provide alternative load path(s).

A system that includes a plurality of front faces configured to be arranged end-to-end in a series. Adjacent front faces are connected together by a different X-shaped or X-wye connector that facilitates installation of reinforcement tail walls. At least one tail wall is connected to each connector. A redundant reinforcing tail wall may be constructed and attached to one of the connectors to provide alternative load path(s).

This patent pertains to secondary containment systems. One implementation includes a support assembly that includes an elongate post member and a stabilization plate. In one instance, a stabilization plate is mounted on the elongate post member to reduce movement of the elongate post member when the stabilization plate is embedded in the ground. Another implementation includes a panel splice assembly including reinforcing members that secure overlapping, corrugated panels.

This patent pertains to secondary containment systems. One implementation includes a support assembly that includes an elongate post member and a stabilization plate. In one instance, a stabilization plate is mounted on the elongate post member to reduce movement of the elongate post member when the stabilization plate is embedded in the ground. Another implementation includes a panel splice assembly including reinforcing members that secure overlapping, corrugated panels.

A method of manufacture of geotechnical profiles where thermoplastic material including one or more of polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyethylene or polythene (PE), acrylonitrile butadiene styrene (ABS), or polypropylene (PP), is plasticized in an extruder, pressed through a cross die unit and internal reinforcing profiles in the form of flat bars, arched elements, angled elements, ribbed profiles or sections of any geometry are entered at least in selected cross-section areas of the geotechnical profile where the internal reinforcing profiles are created from one or more of continuous or chopped fiber produced simultaneously or as part of a separate production process.