Apparatus and associated methodology contemplating an excavation shoring apparatus, having a pipe sized to circumferentially enclose at least one human user working in a subterranean excavation. A plurality of channel brackets is attached to the pipe, each channel bracket forming an elongated cross-sectional profile defining a channel having a longitudinal axis extending along the channel bracket. The excavation shoring apparatus also has a plurality of selectively removable legs, each leg forming an elongated cross-sectional profile defining a beam. Each channel is configured to receivingly engage the beam in a closely-mating slidable relationship. The excavation shoring apparatus also has a plurality of removable fasteners, each connecting one of the legs to the respective channel bracket by simultaneously passing through an opening in the channel bracket and a selected opening of a plurality of openings in the leg. The selected opening in the leg corresponds to a desired position of the leg along the longitudinal axis.

Apparatus and associated methodology contemplating an excavation shoring apparatus, having a pipe sized to circumferentially enclose at least one human user working in a subterranean excavation. A plurality of channel brackets is attached to the pipe, each channel bracket forming an elongated cross-sectional profile defining a channel having a longitudinal axis extending along the channel bracket. The excavation shoring apparatus also has a plurality of selectively removable legs, each leg forming an elongated cross-sectional profile defining a beam. Each channel is configured to receivingly engage the beam in a closely-mating slidable relationship. The excavation shoring apparatus also has a plurality of removable fasteners, each connecting one of the legs to the respective channel bracket by simultaneously passing through an opening in the channel bracket and a selected opening of a plurality of openings in the leg. The selected opening in the leg corresponds to a desired position of the leg along the longitudinal axis.

Provided are a strip-type reinforcing material and a reinforcing material assembly having the same. The strip-type reinforcing material includes: strip bases extending in one direction and made of a flexible material; and resistance means protruding from respective upper and lower parts of the strip bases. Multiple resistance means are provided along the strip bases. The resistance means includes: a first resistance part protruding from the upper parts of the strip bases and having an opening being open in a direction parallel to a longitudinal direction of the strip bases; and a second resistance part protruding from the lower parts of the strip bases and having an opening being open in an opposite direction to the opening of the first resistance part.

Provided are a strip-type reinforcing material and a reinforcing material assembly having the same. The strip-type reinforcing material includes: strip bases extending in one direction and made of a flexible material; and resistance means protruding from respective upper and lower parts of the strip bases. Multiple resistance means are provided along the strip bases. The resistance means includes: a first resistance part protruding from the upper parts of the strip bases and having an opening being open in a direction parallel to a longitudinal direction of the strip bases; and a second resistance part protruding from the lower parts of the strip bases and having an opening being open in an opposite direction to the opening of the first resistance part.

A flexible in-ground shield includes a first wall, a second wall, a third wall, a plurality of shoring members, and a plurality of pivoting couplers. The first wall is disposed on a first side of the flexible in-ground shield, the second wall is disposed on a second side of the flexible in-ground shield, and the third wall is disposed on a third side of the flexible in-ground shield and coupled to the first and second walls. The plurality of shoring members extend between the first wall and the second wall, and the plurality of pivoting couplers, coupled to ends of the plurality of shoring members, respectively, allow the first wall and the second wall to pivot relative to the third wall.

A system for shoring a trench, which is dug for receiving a pipeline and includes spaced apart sidewalls, includes at least two supporting units that are spaced apart from one another in the longitudinal direction of the trench and configured for absorbing transverse forces from the sidewalls. Disposed between the two supporting units is a plurality of shoring units, each configured for supporting the sidewalls of the trench. Together with the supporting units, the shoring units are configured to form a barrier-free lowering space within which the pipe can be lowered into the trench from outside the trench to the floor of the trench. A method for laying a pipe using the shoring system is also disclosed.

A system for shoring a trench, which is dug for receiving a pipeline and includes spaced apart sidewalls, includes at least two supporting units that are spaced apart from one another in the longitudinal direction of the trench and configured for absorbing transverse forces from the sidewalls. Disposed between the two supporting units is a plurality of shoring units, each configured for supporting the sidewalls of the trench. Together with the supporting units, the shoring units are configured to form a barrier-free lowering space within which the pipe can be lowered into the trench from outside the trench to the floor of the trench. A method for laying a pipe using the shoring system is also disclosed.

A roller cart and methods for installing in an excavation support system. The roller cart can include a generally vertical back plate having a front surface, a back surface, a top end, and a bottom end. A generally horizontal base plate, having a top side and a bottom side, can be attached to the back plate at about a 90-degree angle, proximate the bottom end of the back plate. A first side plate and a second side plate that are generally L-shaped, having a generally vertical top portion, and a bottom portion that is generally perpendicular to the top portion can be attached to and generally perpendicular to the back surface of the back plate. The bottom portion of both side plates can be attached to and generally perpendicular to the bottom side of the base plate. The first side plate and the second side plate can be generally parallel to one another. A first plurality of guide plates can be attached to, and generally perpendicular to, the generally vertical top portion of the first side plate, and a second plurality of guide plates can be attached to, and generally perpendicular to, the generally vertical top portion of the second side plate. At least one roller can be connected to the back plate and extending from the back surface thereof. The roller acts as a contact point and ball bearing to compensate for any angular deviations from the vertical and straight lines of the excavation structure. This significantly eases installation and removal, and greatly reduces the time to install and remove the cart.

A roller cart and methods for installing in an excavation support system. The roller cart can include a generally vertical back plate having a front surface, a back surface, a top end, and a bottom end. A generally horizontal base plate, having a top side and a bottom side, can be attached to the back plate at about a 90-degree angle, proximate the bottom end of the back plate. A first side plate and a second side plate that are generally L-shaped, having a generally vertical top portion, and a bottom portion that is generally perpendicular to the top portion can be attached to and generally perpendicular to the back surface of the back plate. The bottom portion of both side plates can be attached to and generally perpendicular to the bottom side of the base plate. The first side plate and the second side plate can be generally parallel to one another. A first plurality of guide plates can be attached to, and generally perpendicular to, the generally vertical top portion of the first side plate, and a second plurality of guide plates can be attached to, and generally perpendicular to, the generally vertical top portion of the second side plate. At least one roller can be connected to the back plate and extending from the back surface thereof. The roller acts as a contact point and ball bearing to compensate for any angular deviations from the vertical and straight lines of the excavation structure. This significantly eases installation and removal, and greatly reduces the time to install and remove the cart.

A portable cofferdam system for isolating a working area from water such as a culvert. The portable cofferdam system generally includes a first sidewall and a second sidewall each having an interior side, an exterior side, an upper edge, a lower edge and a rear edge. A middle wall is connected to the sidewalls opposite of the rear edges of the sidewalls forming a substantially U-shaped structure. An opening formed between the rear edges of the first sidewall and the second sidewall to allow for positioning about or near the inlet of an object or area to be kept dry such as the inlet of a culvert.