A shoring end section assembly is described which may allow increased strength, increased longevity, and ease of use. The end section assembly may be comprised of a through-wall tube that is substantially hollow, and a connection assembly comprised of one or more through-wall tubular coupling assemblies. Each through-wall tubular coupling assembly may be comprised of a hollow through-wall tubular coupling which extends through the through-wall tube, a spreader stop disposed inside the hollow through-wall tubular coupling, a through-wall collar disposed between the hollow through-wall tubular coupling and the through-wall tube, a tubular coupling pin washer plate, and a tubular coupling collar disposed around the proximal end of the tubular coupling. Each through-wall tubular coupling assembly may have a transverse rigidifying member extending between them, and a notched angle brace assembly may be attached to the lowest through-wall tubular coupling assembly.

A shoring end section assembly is described which may allow increased strength, increased longevity, and ease of use. The end section assembly may be comprised of a through-wall tube that is substantially hollow, and a connection assembly comprised of one or more through-wall tubular coupling assemblies. Each through-wall tubular coupling assembly may be comprised of a hollow through-wall tubular coupling which extends through the through-wall tube, a spreader stop disposed inside the hollow through-wall tubular coupling, a through-wall collar disposed between the hollow through-wall tubular coupling and the through-wall tube, a tubular coupling pin washer plate, and a tubular coupling collar disposed around the proximal end of the tubular coupling. Each through-wall tubular coupling assembly may have a transverse rigidifying member extending between them, and a notched angle brace assembly may be attached to the lowest through-wall tubular coupling assembly.

A strut connector may include a connector base, a cover band, a cover band fixer for fixing the cover band to the connector base, and a connection jack. The connector base may include a base body; a support band protruding from one surface of the base body; a base reinforcement boss protruding from the one surface of the base body to a smaller height than the support band; a base connection boss protruding in the opposite direction of the protruding direction of the support band; a base through-hole formed through the base body, the base reinforcement boss and the base connection boss; and a base screw portion formed on the inside of the base through-hole. The cover band may be separably coupled to the connector base.

A provisional facility for retaining earth using a guide bracket and a ground anchor for stepwise retention during deep excavation includes multiple thumb piles disposed vertically at predetermined intervals, a wale disposed across the multiple thumb piles, a guide bracket installed at a predetermined position of the wale, and a ground anchor having the other side anchored to a ground while a tensile member is wound around the guide bracket.

A provisional facility for retaining earth using a guide bracket and a ground anchor for stepwise retention during deep excavation includes multiple thumb piles disposed vertically at predetermined intervals, a wale disposed across the multiple thumb piles, a guide bracket installed at a predetermined position of the wale, and a ground anchor having the other side anchored to a ground while a tensile member is wound around the guide bracket.

The trench shoring apparatus includes first and second side panels connected in a parallel spaced-apart configuration by a connecting bar pivotally connected to one end of one or more pairs of lateral arms. The other opposite end of the one or more pairs of lateral arms are hingedly connected to the side panels, such that translational movement of the connecting bar in a direction parallel to the side panels causes the spaced-apart panels to move between retracted and extended parallel spaced-apart configurations. There is a lock for releasably restricting translational movement of the connecting bar.

A shoring end section assembly is described which may allow increased strength, increased longevity, and ease of use. The end section assembly may be comprised of a through-wall tube that is substantially hollow, and a connection assembly comprised of one or more through-wall tubular coupling assemblies. Each through-wall tubular coupling assembly may be comprised of a hollow through-wall tubular coupling which extends through the through-wall tube, a spreader stop disposed inside the hollow through-wall tubular coupling, a through-wall collar disposed between the hollow through-wall tubular coupling and the through-wall tube, a tubular coupling pin washer plate, and a tubular coupling collar disposed around the proximal end of the tubular coupling. Each through-wall tubular coupling assembly may have a transverse rigidifying member extending between them, and a notched angle brace assembly may be attached to the lowest through-wall tubular coupling assembly.

A multi-stiffener for civil engineering and construction includes an outer pipe member, an inner pipe member, an inner pipe position adjusting pin and a positioning member. The outer pipe member includes an outer pipe strut plate provided at one end of the outer pipe member, a pair of slot-shaped symmetrical guide holes extending in a longitudinal direction from a position spaced apart by a predetermined distance from an open end of the outer pipe member, and a height-adjustment-purpose external thread formed around the guide holes. The inner pipe member includes an inner pipe strut plate provided at one end of the inner pipe member and a plurality of symmetrical through-holes formed at specific intervals from the inner pipe strut plate. The inner pipe position adjusting pin is configured to penetrate the guide holes of the outer pipe member and the through-holes of the inner pipe member.

A multi-stiffener for civil engineering and construction includes an outer pipe member, an inner pipe member, an inner pipe position adjusting pin and a positioning member. The outer pipe member includes an outer pipe strut plate provided at one end of the outer pipe member, a pair of slot-shaped symmetrical guide holes extending in a longitudinal direction from a position spaced apart by a predetermined distance from an open end of the outer pipe member, and a height-adjustment-purpose external thread formed around the guide holes. The inner pipe member includes an inner pipe strut plate provided at one end of the inner pipe member and a plurality of symmetrical through-holes formed at specific intervals from the inner pipe strut plate. The inner pipe position adjusting pin is configured to penetrate the guide holes of the outer pipe member and the through-holes of the inner pipe member.

The present invention relates to a support (20) for a prop (22). The prop (22) comprises a telescopic tube (26) and opposing transversely extending feet. The support (20) comprises a board (30) for contacting a support surface to transmit a supporting load thereto; a load bearing surface for receiving the supporting load from a prop (22); a bracket (32) coupled to the board (30), the bracket (32) arranged to support an end of the prop (22) at a load bearing position on the load bearing surface; and a guide for guiding the prop (22) to the load bearing position.