The invention relates to a method for monitoring the ramming of a ram post (1) into the ground. A succession of blows are struck on the ram post (1) via an impact driving device (3), causing the ram post (1) to be rammed into the ground. Parameters for the load-bearing capacity of the ram post (1) in the ground are ascertained during the ramming of the ram post (1) via a monitoring unit (14).

In a method of installing a pile in the sea bottom by means of a pile guide which has a frame and at least an upper and a lower pair of cooperating guide members, wherein the upper pair and the lower pair are located at a distance from each other in vertical direction. Each pair of guide members comprises a passive guide member and an active guide member. The passive guide members are moved to respective fixed initial guiding positions with respect to the frame and the active guide members are moved to the pile until the passive and the active guide members engage the pile, after which the pile is hold between the upper pair of guide members and between the lower pair of guide members during driving the pile into the sea bottom, during which the actual forces between the pile and the respective guide members are determined.

The invention relates to a civil engineering device with an undercarriage with a crawler chassis, an upper carriage, which is arranged on the undercarriage, and a mast, which is mounted vertically oriented on the upper carriage. According to the invention it is provided that arranged on an upper area of the mast is at least one camera, by which an image of the civil engineering device and its surroundings can be recorded.

A metal fin tube foundation includes a pair of coupled metal plates, each plate being comprised of a plurality of flat panels, wherein each panel is positioned at an angle relative to an adjacent panel, and each plate including a fin on each lateral end of each plate, wherein each fin overlaps a fin of the other metal plate forming two pairs of overlapped fins, wherein the plates are coupled along each of the two pairs of overlapped fins; wherein the plurality of panels of the coupled two metal plates form a closed perimeter polygon shape having an open interior and wherein each pair of overlapped fins form a combined fin element which extends away from the perimeter of the polygon.

A metal fin tube foundation includes a pair of coupled metal plates, each plate being comprised of a plurality of flat panels, wherein each panel is positioned at an angle relative to an adjacent panel, and each plate including a fin on each lateral end of each plate, wherein each fin overlaps a fin of the other metal plate forming two pairs of overlapped fins, wherein the plates are coupled along each of the two pairs of overlapped fins; wherein the plurality of panels of the coupled two metal plates form a closed perimeter polygon shape having an open interior and wherein each pair of overlapped fins form a combined fin element which extends away from the perimeter of the polygon.

The method comprises the following operations: delivering a moving power to at least one linear actuator (1, 7) arranged to move a mast (5) mounted so as to swing with respect to a self-propelled structure (3) among a plurality of moving operating configurations; delivering an actuating power to a winch (8) which is supported by said self-propelled structure (3) and adapted to allow the winding or unwinding of a respective traction element which is constrained to a drilling assembly, in particular a bank of telescopic or kelly bars (12) to which a drilling tool can be associated; at least temporarily preventing a relative axial movement between said drilling assembly (12) and said mast (5) during the passage between at least two consecutive operating configurations; and automatically controlling the delivery of said moving power in a coordinated manner with the delivery of said actuating power when said axial movement is hindered.

The method comprises the following operations: delivering a moving power to at least one linear actuator (1, 7) arranged to move a mast (5) mounted so as to swing with respect to a self-propelled structure (3) among a plurality of moving operating configurations; delivering an actuating power to a winch (8) which is supported by said self-propelled structure (3) and adapted to allow the winding or unwinding of a respective traction element which is constrained to a drilling assembly, in particular a bank of telescopic or kelly bars (12) to which a drilling tool can be associated; at least temporarily preventing a relative axial movement between said drilling assembly (12) and said mast (5) during the passage between at least two consecutive operating configurations; and automatically controlling the delivery of said moving power in a coordinated manner with the delivery of said actuating power when said axial movement is hindered.

A friction reducing jacket is applied to a pile. The jacket comprises a sheet material and is formed in a shape that can conform to the exterior surface of the pile. The sheet material comprises a thermoplastic, e.g., polyolefin, and a slip agent, e.g., amide. A method of shielding a pile from downward force exerted by backfilled earthen materials during settlement includes the steps of providing a friction reducing jacket constructed of sheet material comprising a thermoplastic polymer and an amide slip agent; driving the pile into soil, leaving a portion of the pile above the soil exposed; wrapping the friction reducing jacket around the exterior surface of the exposed portion of the pile such that the interior surface of the jacket contacts the exposed exterior surface of the pile; and placing backfilled earthen materials around the jacketed section of the pile.

A friction reducing jacket is applied to a pile. The jacket comprises a sheet material and is formed in a shape that can conform to the exterior surface of the pile. The sheet material comprises a thermoplastic, e.g., polyolefin, and a slip agent, e.g., amide. A method of shielding a pile from downward force exerted by backfilled earthen materials during settlement includes the steps of providing a friction reducing jacket constructed of sheet material comprising a thermoplastic polymer and an amide slip agent; driving the pile into soil, leaving a portion of the pile above the soil exposed; wrapping the friction reducing jacket around the exterior surface of the exposed portion of the pile such that the interior surface of the jacket contacts the exposed exterior surface of the pile; and placing backfilled earthen materials around the jacketed section of the pile.

The present invention relates to the field of construction of underground buildings, specifically to an inverse construction method for a deep, large and long pit assembling structure of a suspension-type envelope enclosure. A method includes design and calculation; engineering construction of foundation piles; control over underground water; construction of a pit enclosure; building of a basement reinforcing and anti-seeping layer; inverse construction; and floor structure construction. By the inverse construction method for a deep, large and long pit assembling structure of a suspension-type envelope enclosure of the present invention, the pit construction quality is easily controlled, the basement is well waterproofed and easily monitored, and the quality control, service and maintenance are easy.