Abstract: An erosion control block having registration ribs and slots on opposite edge surfaces to align neighbor blocks together in a cabled mat of blocks. The blocks have a pair of parallel cable channels therethrough, as well as a single orthogonal cable channel formed therethrough. With this arrangement, the blocks are versatile and can be configured in a mat of side-by-side blocks, or in a mat of staggered blocks. Neighbor mats can be easily fastened together. The parallel cable channels are formed through the block at a location adjacent an articulation edge so that when a mat of cabled blocks are lifted in a catenary, the articulation between blocks is facilitated.

Abstract: A revetment block with a top surface that is tapered upwardly from the upstream end to the downstream end. Thus, when a number of tapered blocks are installed end to end on a grade, the upstream end of any of the blocks can be raised due to underlying ground irregularities without degrading the safety factor of the blocks. The tapered revetment blocks can also be constructed with positive interlocking arms and sockets to enhance the integrity of a matrix of such blocks.

Abstract: A concrete revetment block having interlocking arms and sockets and an array of vegetation holes. Two arms and two sockets are formed in the block to provide interlocking capabilities with neighbor blocks of a mat. One arm of the block is constructed with a partial thickness and one socket is constructed with a partial depth, thereby providing vertical interlocking capabilities with the neighbor blocks. An array of holes is formed through the block to allow vegetation to grow therethrough. Various holes are located in the block to allow easy grasping of the block by a workman for lifting the same. The holes are formed in the core square of the block, with respective diameters related to the thickness of the block to maximize the hydraulic stability of the block.

Abstract: A concrete interlocking revetment block having a pair of arms and a pair of sockets. The arms have enlarged ends and the sockets have enlarged cavities to interlock similar blocks together and prevent lateral separation. The arms extend outwardly from respective side edges of the block, with radial axes orthogonal to each other so as to be adjacent to each other. The sockets are formed into respective side edges of the block, with radial axes orthogonal to each other so as to also be adjacent to each other. The depth of at least one socket is less than the thickness of the block. A portion of the socket is thus covered with concrete to thereby provide reinforcement between adjacent sockets of the block, and reduce incidences of breakage. At least one arm is also formed with a thickness less than the thickness of the block.

Abstract: An erosion control block having male tab members and female socket members providing an interlocking relationship with neighbor blocks so that lateral removal therebetween is prevented. The erosion control block includes cable channels formed therein from respective opposite corners of the block so that an axis of the cable channels forms an “X” in said block.

Abstract: A method of cabling erosion control blocks of a mat together. The blocks have formed therein cable channels in a cris-cross manner, diagonally between the corners of each block. Cables are threaded through the blocks in a zig-zag manner, from the top of the mat to the bottom of the mat. The ends of the cables are terminated at two opposing sides of the mat so that the mat can be lifted by a spreader bar. The cables at the other two opposing sides of the mat are terminated for attachment to adjacent mats.

Abstract: A method for installing and replacing revetment blocks in a cabled matrix. Each revetment block has a large opening therein for access to the cables that pass therethrough. The cable of a broken block is severed in the opening, and the parts of the broken block are removed. The ends of the severed cable are threaded through a replacement revetment block, and the block is lowered into place in conjunction with the neighboring blocks. The ends of the severed cable are pulled into the opening in the block and spliced together, preferably using a ferrule that is crimped to the ends of the severed cable. The large opening in each block also facilitates threading the cables through the rows of blocks in a matrix.