Abstract: A breakwater assembly comprises an upper slab (15) supported on columns (14, 21) that extend upwardly from a lower slab (13). A solid back wall (17) depends from one edge of the upper slab (15) while a front wall (16) with holes (18) therein depends from the other edge to exchange sea water freely between inner sea and outer sea.

Abstract: A wave dissipating concrete block for covering an inclined surface facing seaside on a breakwater for the purpose of dissipating waves. The concrete block of the present invention includes a cylindrical body, tapered lump legs projecting from the cylindrical body and branch legs cylindrically projected through a circular base disposed on the cylindrical body. Projections are disposed on the branch legs and extend parallel or perpendicular to the cylindrical body.

Abstract: A protective wall assembly (8) for protecting an embankment (6) to prevent scouring of the embankment (6) during high water flows such as experienced in floods or tidal waves. The protective wall assembly (8) comprises a plurality of block assemblies (10) each having a body (11), a top surface (30), and a bottom surface (32). Each block assembly (10) further includes four side faces (34,34a,34b,34c) interconnected by four intermediate faces (13,13a,13b,13c) to define an eight-sided body. Each intermediate face (13,13a,13b,13c) has a bore (21,22) extending perpendicularly thereinto. A first connecting device (42) engages the bores (21,22) in a first pair of intermediate faces (13,13b) of a first pair of block assemblies (10A,10C). The length of one (21) of the bores (21,22) is different than a length of the other of the bores (21,22). The protective wall assembly (8) provides an environmentally friendly structure harmonized with the surrounding scenery.

Abstract: A gravity-type quay wall comprising a rubble base stage (3) extending from the sea bottom. A lower part (1a) is constructed on the rubble base stage (3) by stacking cell block units (4) wherein each of the cell block units (4) have four walls defining a vacant space therein for filling with rubble (5). Two of the walls of the cell block units (4) are side walls (6,6a), each having one of a female key (13) or a male key (14) for mating with adjacent cell block units (4). In an upper part of a top staged cell block unit (4a) is a depressed portion (7). An L-shaped shelf-style middle part (1b) is settled on a top surface of the rubble (5) of the lower part (1a) wherein the rubble (5) is filled halfway in the depressed portion (7). An upper part (1c) is settled on the middle part (1b) with the same length and width thereof.

Abstract: A concrete pile construction method and an apparatus used for improving soft earth ground by constructing reinforced bar concrete pile structures in the earth. The purpose of the present invention is to provide a process for securing firm concrete piles having a reinforced bar core with uniform concrete by a pile apparatus in which projections are radially formed and a conical-shaped bit is formed pointedly on the pile apparatus.

Abstract: A block assembly for constructing a seawall along an embankment. The block assembly is comprised of two types of blocks, a first block and a second block. Each block includes two half-circular type projections lying parallel to one another, seawater holes for discharging sea water are formed in a front wall between the half-circular projections of each block to prevent the loss of blocks and to decrease wave power. In an upper and lower end portions of the front wall of both blocks, projections are reciprocally formed with spaces, and a fixed supporter is formed on a backside of the front wall.

Abstract: A block for constructing a breakwater comprises a front wall in which horizontal projections are formed with transverse rectangular-shaped holes therebetween. Side walls extend from both ends of the front wall. A partition wall in which multiple holes are formed to communicate with the transverse rectangular-shaped holes is jointed to the side walls at both ends and spaced from the front wall. A detention area is defined by the front wall, partition wall and side walls for receiving the overflow waves through the transverse rectangular-shaped holes in the front wall.

Abstract: A block assembly for constructing a seawall and dissipating waves. The block assembly includes a block comprising a front wall, a left side part and a right side part. The left and right side parts include stepped surfaces and a plurality of round shaped projection parts are closely disposed on the front wall. The block further includes two connecting walls having male protrusions and female recesses formed on upper and lower surfaces thereof.

Abstract: The present invention relates to a concrete pile construction method and an apparatus used for improving soft earth ground by constructing reinforced bar concrete pile structures in the earth. The purpose of the present invention is to provide a process for securing firm concrete piles having a reinforced bar core with uniform concrete by means of a pile apparatus in which projections are radially formed and a conical-shaped bit is formed pointedly on said pile apparatus.

Abstract: A protective wall assembly (8) for protecting an embankment (6) to prevent scouring of the embankment (6) during high water flows such as experienced in floods or tidal waves. The protective wall assembly (8) comprises a plurality of block assemblies (10) each having a body (11), a top surface (30), and a bottom surface (32). Each block assembly (10) further includes four side walls (34,34a,34b,34c) interconnected by four comer walls (13,13a,13b,13c) to define an eight-sided body. Each comer wall (13,13a,13b,13c) has a bore (21,22) extending perpendicularly thereinto. A first connecting device (42) engages the bores (21,22 ) in first comer walls (13,13b) of a first pair of block assemblies (10A,10C). The protective wall assembly (8) provides an environmentally friendly structure harmonized with the surrounding scenery.

Abstract: The present invention relates to a wave dissipating concrete block for covering a an inclined surface facing seaside on a breakwater for the purpose of dissipating waves securely and effectively. The concrete block of the present invention includes a cylindrical body, tapered lump legs projecting from the cylindrical body and branch legs cylindrically projected through a circular base disposed on the cylindrical body and having projections disposed thereon parallel to the cylindrical body.

Abstract: A block assembly for constructing a seawall along an embankment. The block assembly is comprised of two types of blocks, a first block and a second block. Each block includes two half-circular type projections lying parallel to one another, seawater holes for discharging sea water are formed in a front wall between the half-circular projections of each block to prevent the loss of blocks and to decrease wave power. In an upper and lower end portions of the front wall of both blocks, projections are reciprocally formed with spaces, and a fixed supporter is formed on a backside of the front wall.

Abstract: A covering block for constructing a breakwater comprises a front wall in which horizontal projections are formed up and down transversal rectangularshaped openings therebetween, in parallel rows, side walls left and right jointed at the both ends of the front wall, a partition wall in which multiple holes are formed to communicate with the above said openings, being jointed to the side walls at both ends, and a detention pond surrounded by the above four walls for reserving the overflow waves, are designed concrete stacked, assembling devices which are very convenient for constructing and handling.

Abstract: A block assembly for constructing a seawall and dissipating waves. The block assembly includes a block comprising a front wall, a left side part and a right side part. The left and right side parts include stepped surfaces and a plurality of round shaped projection parts are closely disposed on the front wall. The block further includes two connecting walls having male protrusions and female recesses formed on upper and lower surfaces thereof.