Devices, structures, and methods for designing, constructing, and fitting modular structural building blocks together into a unified structure. Modular blocks are rapidly fit together into finished assemblies. Finished assemblies include reinforcing elements aligned in a structurally sound pattern. The unified structure includes walls, provisions for corners, and provisions for door/window spaces. The unified structure optionally includes raised floors or lowered ceilings, offset from ordinary associated height, using blocks disposed side-by-side with intermediate supports. The unified structure optionally includes one or more curved structures, such as vaulted ceilings, rounded walls or silos, tunnels, or otherwise.

An architectural building block system including a block having three side walls, each having an inside surface and an outside surface, the three side walls cooperate to form a triangular tube, the outside surface of each of the three side walls extending from the inner surface to the outer surface and the inside surface of each of the three walls is disposed substantially at right angle to each of the inner surface and the outer surface; and three channels, each channel disposed on one of the three side walls on the inner surface, wherein each channel extending from the inside surface to the outside surface of one of the three side walls and each pair of the three channels configured to receive a rebar.

A block, block system and method of making a wall block. A block with multiple embodiments of a visually exposed surface having three dimensional shaped areas and three dimensional angular valleys or joints that can be used to construct a patio, wall, fence or the like; the multiple embodiments creating a more random and natural appearance. A mold box having a moveable liner and a stripper shoe that impart three dimensional shaped areas and three dimensional angular valleys or joints onto an exposed surface of a block. The moveable liner and stripper shoe also impart a parting line onto the exposed surface of the block.

A retaining wall block including a pair of curved engagement surfaces extending convexly from a rear side of the block and being symmetrical about a transverse axis are configured to engage a planar surface of a setback lip of similar overlying blocks when stacked in successive courses to form a wall structure, where the curved engagement surfaces maintain a desired setback distance successive courses for straight, convex, and concave wall structures.

A block, block system and method of making a wall block. Multiple block embodiments with multiple embodiments of a visually exposed surface having three dimensional shaped areas and three dimensional angular valleys or joints that can be used to construct a patio, wall, fence or the like; the multiple embodiments creating a more random and natural appearance.

The invention relates to a protective element for connecting to a concrete element of a tunnel extension, which has a protective section having a first side facing the concrete element (10), on which first side at least one connecting element (17) is provided for establishing a retaining connection of the protective section to the concrete element (10), wherein the protective section is made from at least one plastic material, characterized in that the protective section (20) has at least one drainage element (40) through which a fluid can pass from the first side of the protective section (20) to the opposite side of the protective section (20) facing away from the concrete element (10).

A concrete building block includes indicators along each end to assist in aligning a pin placed in the block with a channel in a like block in a course below as a wall is being constructed.

A method for manufacturing modular retaining wall blocks in natural stone, wherein the blocks are trapezoidal blocks having top and bottom surfaces with channels that receive offset connectors in multiple orientations for building upright, offset, and curved walls. Stone from a quarry is cut or split to form substantially rectangular elongate blocks having top and bottom surfaces, opposed side faces, and opposed ends. A series of channels running parallel to the side faces is cut in each of the surfaces, the top channels lying across from the bottom channels but offset therefrom. The elongate blocks are then cut between opposing pairs of channels to form trapezoidal blocks having front and rear faces.

A wall module for a modular wall having a wall segment with a top, bottom, front, back, first end, and back end. A first component of a connector is preferably and extended tongue and is attached to the second end of a wall segment. The second component of a connector is preferably an extended groove in the first end of the wall segment. Preferably, a channel exists along the length of each wall segment at top. Also, preferably either a ring segment or an elongate member is in such channel and is connected to a leg. And preferably the ring segment or elongate member connects to the corresponding element on an adjacent wall segment when such adjacent wall segment has been connected to the first wall segment.

A multi-use block including a block body having at least a first leg. The blocks can be placed in different orientations with respect to each other to form multiple interlocking structures. The block can be a variety of materials, including concrete, and when concrete, used for making walls and columns. Methods of making and methods of use are provided.