Abstract: The invention relates to a tool (11) comprising a base element (2), which is a single-piece cast structure made of cast iron and comprising studs (3, 4) provided on the base element (2) by welding. The invention further relates to a method for forming such a tool and to the use of such a tool for forming secant walls.

Abstract: An anchor chair is configured for transmitting a pulling force from an elongated foundation element to a wall. The anchor chair includes a passage for the elongated foundation element, and a cavity between a first opening located on a first side of the anchor chair, which first side is facing away from the wall in attached state, and a second opening located on an opposite side of the anchor chair, which opposite side is facing the wall in attached state and which opposite side defines in attached state a contact area of the anchor chair to contact the wall. The first opening is a slot-shaped opening having two long sides and two short sides. In an attached state, the long sides of the slot-shaped opening of the anchor chair are oriented parallel to a plane perpendicular to the wall.

Abstract: A tip is described which extends axially along a central longitudinal axis and is configured to displace the ground when the tip is being rotated about its central longitudinal axis during a ground displacement operation for a foundation pile. The tip comprises a tip body; several spiral-shaped ribs protruding from the tip body; and several protrusions arranged to the ribs. The protrusions comprise a point which is arranged such that, during rotation of the tip about its central longitudinal axis, the point of the protrusion is ahead of the rib to which the protrusion is arranged. The tip body, the ribs and the protrusions are made as a single-piece casting.

Abstract: A tip is described for attachment to a bottom end of a foundation pile. The tip comprises a cast iron tip body and an element partially molded into the cast iron tip body. A foundation pile assembly comprises such a tip. A method for manufacturing is provided for such a tip.

Abstract: A tip is described which extends axially along a central longitudinal axis and is configured to displace the ground when the tip is being rotated about its central longitudinal axis during a ground displacement operation for a foundation pile. The tip comprises a tip body; several spiral-shaped ribs protruding from the tip body; and several protrusions arranged to the ribs. The protrusions comprise a point which is arranged such that, during rotation of the tip about its central longitudinal axis, the point of the protrusion is ahead of the rib to which the protrusion is arranged. The tip body, the ribs and the protrusions are made as a single-piece casting.

Abstract: A tip is described for attachment to a bottom end of a foundation pile. The tip comprises a cast iron tip body and an element partially molded into the cast iron tip body. A foundation pile assembly comprises such a tip. A method for manufacturing is provided for such a tip.