Abstract: The present building block has at least one inner core, a secondary or end core portion, and an interlock protruding from one face and forming a portion of the periphery of at least one of the inner cores. When placed end to end and at the same level, building blocks of the present invention form a secondary core or seat for reception of the interlock. When a first row of building blocks placed end to end is staggered relative to a second row of building blocks placed end to end, the interlocks of one row of building blocks mate with the secondary or end core portions or relatively large inner cores of the other row of building blocks such that neighboring rows of building block interlock. The basic building block has ends that are oblique such that rows having a preset radius can be formed or such that a linear row can be formed by placing one block front-to-back and an adjacent building block back-to-front.

Abstract: A simulated masonry module, made of blow molded plastic, has a box-like body with a textured front and top. Modules are pin-connected to each other at interleaving ends. They may be stacked, to form assemblies simulating a masonry wall. Straight, curved or angled walls may be constructed, as well as enclosures suited to contain soil or water in a tub-like liner. Filler blocks mate with the ends for make square terminal ends of wall segments. Sand or other material may be put inside the modules through a rear access port, to add mass and stability. The bottom of a module has sculpting, to loosely fit and interlock with the contour of the top of a like-module, when modules are stacked, so the horizontal joint is unobtrusive. A spike, used for connecting module ends, is retained in a shaped groove on the rear of the module, to enable convenient shipment of a module and spike combination.

Abstract: The invention relates to an artificial stone floor element with a basic shape that corresponds to the combination of a plurality of square basic elements, especially to an angular floor element. The floor element includes projections and recesses along its peripheral sides of the basic element when seen from the center of the respective top face of the basic element is substantially point-symmetric with respect to its mid-point. The inventive floor element is further characterized in that the profile consists of three projections and three recesses.

Abstract: A palisade comprises visible or wall surfaces disposed on opposing sides and intermediate end faces. One of the end faces is provided with a projecting convex head, while the other end face comprises a correspondingly formed concave receptacle for the head. When forming a palisade wall, the head of a palisade can engage in the receptacle of a neighboring palisade such that the head substantially completely fills the receptacle. To be able to bend neighboring palisades relative to one another over a large angle and to increase the design possibilities of a palisade wall, the head and the receptacle are disposed eccentrically on the respective end face and preferably in the corner region between the end face and the associated visible or wall surface.

Abstract: A block for use in constructing a retaining wall. The block has a bottom with a non-planar portion that forms a gap between the block and the top surface of a lower course of similar blocks when the block is placed thereon. This gap allows the block to rest on the lower course of blocks in a stable, level manner by providing a space that can accommodate small amounts of intrusive material such as rubble, dirt, or miscellaneous debris which would otherwise interfere with the stacking of the blocks. The block's bottom may also include a plurality of grooves that provide additional clearance in the gap for larger bits of intrusive material such as pebbles or small stones. Preferably, the grooves have angled walls which act to funnel the larger bits of intrusive material into an area of adequate clearance when the block is being placed on a lower course of similar blocks.

Abstract: A five-sided interlocking block. At least one side, and preferably at least three sides, of the block is adapted to engage the same side of a similar block to interlock the blocks. At least one side of the block may also be adapted to rotatably engage the same side of a similar block. At least three sides of the block may also include anti-shear receptacles. The anti-shear receptacles on any side of two blocks may be aligned and shear prevention components inserted therein to interlock the blocks. The block may further include an optional interior space, enabling the block to be used as a container for appropriate material.

Abstract: A wall block, system, and method for creating a straight and/or curved wall such that the front and back sides of the wall will have generally the same appearance. The block is asymmetrical and is designed to abut the ends of like blocks that are upright or inverted relative thereto.

Abstract: A ground covering element having the basic shape of a square. All four basic sides of the around covering element have an engaging profile, each profile being symmetric with respect to a central axis of symmetry. Opposite engaging profiles are mirror images. Each engaging profile is complementary with the adjacent engaging profile. Each of the four corner regions of the ground covering element of a first type have a protrusion substantially the shape of a rectangular, isosceles triangle or of an area element similar to this triangle with curved legs. A ground covering element of a second type (42) is obtained by omitting the four protrusions from the ground covering element of the first type. The ground covering element of the second type may be laid together with additional ground covering elements of the second type or in combination with ground covering elements of the first type.

Abstract: Earthquake resistant blocks or discrete structures are manufactured using pieces of low quality construction materials such as slag, concrete waste, chipped stone, Sirasu, etc. The pieces are placed in a mold and arranged in the mold so that they are in intimate contact with the mold sides and with each other throughout the mold. Once positioned, mortar or other concrete binding material is poured in to retain the low quality construction materials in contact with each other. When the blocks or discrete structures are placed adjacent to each other, such as when constructing arches, they absorb or dissipate the shock and vibration energies by having the sides of the blocks, and in particular the low quality materials within the blocks, in firm frictional contact. The amount of concrete used is greatly reduced and local and normally scrap material can be used and recycled.

Abstract: A plurality of building blocks (1) form a retaining wall (300), which may be curved, with respective side edges (6, 7) providing pivot points and a stepped base (5) of an upper block (1) being positionable on the upper surface (4) of a lower block (1). The gaps between the blocks 1, and their permeability, being made from permeable concrete, can avoid hydrostatic build up behind the wall (300). The permeability of the concrete used for the blocks (1) is in the range of 10?2 m/s to 10?4 m/s and may be in the region of 6.00×10?3 m/s.

Abstract: The present invention relates to an interlocking masonry wall block having two spaced lugs or projections and a cooperating recess or channel that enable like-shaped blocks to be stacked in a staggered relation to form straight and serpentine walls that are particularly suited for landscaping applications. In one embodiment, the lugs are located proximal the sides of the block and extend from an upper surface of the block. The channel is formed in a lower surface of the block. In another embodiment, the lugs are located at the rear corners of the block and extend below the lower surface of the block. The recess is formed in the rear end of the block between the lugs. Like-shaped blocks are stacked in a staggered relation so that each block is stacked atop two immediately lower blocks. In each embodiment, the lugs and their cooperating channel or recess define a setback dimension.

Abstract: Retaining wall blocks and the walls made from such blocks are disclosed, wherein curved landscapes (i.e. curved profiles and sloping embankments) are easily accommodated without the use of mortar. As well, a modular system of blocks and their manufacture are disclosed wherein some blocks are used in vertical orientations and some in horizontal orientations.

Abstract: A retaining wall block system having multiple sizes and shapes of blocks with differently dimensioned, interchangeable front and back faces. The blocks are used to construct an irregularly textured wall having a weathered, natural appearance. Multiple channels in the lower face of the block are used to engage pins in pin-receiving apertures to form an attachment system. Horizontal reinforcing members are also used in the channels and vertical reinforcing members are used in cores of adjacent blocks for reinforcing a wall. Reinforcing geosynthetic materials can also be firmly held in a wall by means of the pins or by connectors adapted to fit in the block channels.

Abstract: A stablized retaining wall structure comprising concrete blocks stacked in an array of superimposed rows, and with a stable anchoring assembly being in restraining contact with selected blocks. An access bore extends from the rear surface of the block to the surface of the wall comprising the hollow core. An earthen fill zone is arranged in spaced apart relationship to the rear surface of the wall and clean granular back-fill is interposed between the wall and the earthen fill zone. A keeper device is provided to couple selected wall blocks to the stable anchoring assembly, with the keeper device being configured to be restrainably held within the hollow core. An elongated fastener is coupled to the keeper device, with the fastener extending through the access bore and secured to the stable anchoring assembly.

Abstract: An interlocking hollow body configured and arranged with integrally formed and partially laterally overlapped upper and lower generally rectangular sections which form (a) a central commons portion, (b) a cantilevered portion of the upper section projecting from a first side of the body, and (c) a cantilevered portion of the lower section projecting from a second side of the body. The body has (i) a decorative front surface on the upper and lower sections, (ii) a rear surface on the upper and lower sections, (iii) laterally offset first ends on the upper and lower sections, (iv) laterally offset second ends on the upper and lower sections, (v) an underside of the upper section between the laterally offset first ends on the upper and lower sections, and (vi) a top of the lower section between the laterally offset second ends on the upper and lower sections. A protrusion projects from either the underside of the upper section or the top of the lower section.

Abstract: Precast concrete paver blocks are provided with interlocking edge joints so that abutting edges of adjacent paver blocks align when the blocks are installed and are maintained in alignment. At each joint, each block includes a tapered projection and a recess. When edges of two blocks are moved to abut each other, the tapered joint projection on each block enters the joint recess on the other block. The taper on the projections move the blocks to align the block surfaces. The edges of the blocks are angled or relieved below the joints to ensure a tight fit at the top of the paver blocks.

Abstract: A retaining wall block is provided. The retaining wall block includes top, bottom, front, back, first side and second side surfaces. A tongue set is provided on the top surface of the block and a groove in the bottom surface of the block. The tongue set includes a rear-facing surface set that includes first and second curved sections. A block form for forming retaining wall blocks is also provided. A face form for placement on the bottom surface of a block form is also provided. A method of molding retaining wall blocks with a form having hinged doors is also provided. A method of using a face form for forming two blocks of reversed front surface ornamentation is also provided.

Abstract: A retaining wall system and connector therefor. The system can be used with soil reinforcement material. The connector can function to hold the reinforcement material in place in addition to interlocking the blocks together.

Abstract: The present invention relates to a retaining wall block that is resistant to damage and wear caused by the environment it is placed into. The deterioration resistant block is generally a hollowed frame or shell of a deterioration resistant material that is lightweight and is configured to accept and retain any type of filling material. The filling material provides weight and stability to the retaining wall block and also provides weight, stability and security to a retaining wall constructed of such blocks.

Abstract: A revetment for bank, water-retaining structure and the like includes elements made of concrete or a similar material, which elements are approximately prismatic in the height direction and each have two transverse faces and two longitudinal faces which run parallel to their height direction. One transverse face of each element is made a concave shape, and the other transverse face is made a corresponding convex shape, in such a way that the elements can rest with their transverse faces against each other in various rotated positions.

Abstract: The present invention is a masonry unit, masonry system and method of constructing a structure using the system. In its most basic form, the masonry unit of the present invention includes substantially parallel top and bottom surfaces, substantially parallel a front and back surfaces, and substantially parallel right and left surfaces. A locking ridge is disposed upon the top surface and extends along the top surface in substantially parallel relation to the front and back surfaces. A locking channel is disposed with in the bottom surface and is dimensioned to mate with locking ridge on the top surface of an adjoining masonry unit. The locking channel is disposed inward from the bottom surface a distance that is a slightly larger than the distance from the top surface to the top of the ridge. The system includes a primary masonry unit and at least one corner masonry unit.

Abstract: A block has a finished surface that provides an attractive appearance. The block is relatively large in size, allowing the quick construction of a wall, such as a retaining wall, using the block. The block includes one or more lift and alignment devices in the block that allow the block to be lifted using a suitable lifting apparatus, such as a crane, forklift, backhoe, etc. The block includes one or more recessed portions in the bottom surface of the block positioned to receive the protruding lift and alignment device of a previously-laid block underneath, thereby helping to align the block with the previously-laid block. The block includes one or more voids that extend from the top surface to the bottom surface of the block, and that align with each other when the blocks are stacked into a wall, thereby allowing fill material to be placed in the voids to strengthen the wall. The preferred embodiments also include a wall system with various different blocks that may be used to build a wall.

Abstract: A stablized retaining wall structure comprising concrete blocks stacked in an array of superimposed rows, and with a stable anchoring assembly being in restraining contact with selected blocks. A retainer detent extends from the top surface of a wall of the block between the outer surface of the block and the hollow core. An earthen fill zone is arranged in spaced apart relationship to the rear surface of the retaining wall and clean granular back-fill is interposed between the retaining wall and the earthen fill zone. A retainer device is provided to couple selected wall blocks to a remote stable anchoring assembly, with the retainer device being configured to be restrainably held within the hollow core. One end of an elongated fastener is coupled to the retainer device, with the fastener extending outwardly through the retainer detent and secured to the remote stable anchoring assembly.

Abstract: A block for use in construction has opposed front and rear surfaces, opposed top and bottom surfaces, and a pair of opposed ends. The top and bottom surfaces are complementarity profiled to mutually interfit. The end surfaces are shaped to permit a plurality of blocks to be laid in a course with no mortar in between blocks in a course.

Abstract: A building set with building elements, having coupling means in the form of projecting studs and corresponding cavities for interconnection of building elements, consists of building elements with U-shaped edges and single row of studs and cavities allowing construction of flexible angle structures with pivoting parts.

Abstract: A block system that includes a block with slanted walls on its edges forming longitudinal grooves to receive cement without introducing separations or spaces between abutting blocks. A base alignment tool is used to guide the blocks of the first row to ensure proper alignment. The base alignment includes a longitudinal extending sheet with spaced apart lateral walls for receiving the blocks inbetween. A row leveling tool is used to keep in alignment two blocks in different contiguous rows and separated. An elongated rigid member interconnects two bracing members attached to separated blocks in contiguous row.

Abstract: The present building block has at least one inner core, a secondary or end core portion, and an interlock protruding from one face and forming a portion of the periphery of at least one of the inner cores. When placed end to end and at the same level, building blocks of the present invention form a secondary core or seat for reception of the interlock. When a first row of building blocks placed end to end is staggered relative to a second row of building blocks placed end to end, the interlocks of one row of building blocks mate with the secondary or end core portions or relatively large inner cores of the other row of building blocks such that neighboring rows of building block interlock. The basic building block has ends that are oblique such that rows having a preset radius can be formed or such that a linear row can be formed by placing one block front-to-back and an adjacent building block back-to-front.

Abstract: A retaining-wall block has a set of liquid impervious walls defining a completely bounded cavity having a sealable opening for filling the cavity with a fill material to add weight, and a seal element for sealing the sealable opening. In some cases the block has a second cavity with openings for collecting liquid and for passing collected liquid out of the second cavity to adjacent blocks in an assembly.

Abstract: The present invention is a masonry unit, masonry system and method of constructing a structure using the system. In its most basic form, the masonry unit of the present invention includes substantially parallel top and bottom surfaces, substantially parallel a front and back surfaces, and substantially parallel right and left surfaces. A locking ridge is disposed upon the top surface and extends along the top surface in substantially parallel relation to the front and back surfaces. A locking channel is disposed with in the bottom surface and is dimensioned to mate with locking ridge on the top surface of an adjoining masonry unit. The locking channel is disposed inward from the bottom surface a distance that is a slightly larger than the distance from the top surface to the top of the ridge. The system includes a primary masonry unit and at least one corner masonry unit.

Abstract: A building block that is releasably attachable to another block of compatible design by wedging the tongue of one block into the groove of another block, without the need for any intermediate adhesives, bonding materials or any other means of holding the blocks together. The block includes a body, an outwardly-extending tapered tongue, and two inner surfaces that form a tapered groove therebetween. The tongue and groove have substantially the same taper. The top of the tongue is wider than the bottom of the groove. The base of the tongue is wider than the opening of the groove. A tongue and groove joint is also disclosed as well as methods for forming a tongue and groove joint. A base which includes a plurality of spaced-apart tongues and grooves is provided for use in supporting a plurality of building blocks thereon.

Abstract: A modular wall or fence construction system includes at least first and second I-profile blocks, each having an I-shape in planform. The I-shape defines a parallel pair of flanges across opposite ends of a web extending between the flanges. The I-profile blocks have generally planar and parallel upper and lower surfaces and a uniform vertical height. Each of the flanges of the first and second I-profile blocks have radiused rib keys formed in opposite parallel edges of the flanges. The edges are distal on the flanges relative to the web. A first pair of the radiused rib keys are a pair of convex rails along the parallel edges on a first side of the web. A second pair of the radiused rib keys are a pair of concave channels along the parallel edges on a second side of the web opposite the first side of the web. Each flange has oppositely disposed, on opposite edges, one convex rail and one concave channel.

Abstract: A concrete block produced from a workpiece that includes at least a portion of a top surface that is roughened by a roughening assembly. The roughening assembly may include a shaft having a plurality of roughening members, the shaft being rotated in a direction opposed to the movement of the workpiece. A splitting mechanism is provided downstream of the roughening assembly to split the workpiece into one or more blocks. The blocks may be placed in a wall having a setback, with the roughened top surface of each block enhancing a natural appearance of the ledge created as a result of the setback.

Abstract: A masonry block wall system is disclosed comprising a plurality of piers positioned at predetermined intervals with a pilaster mounted on each of the piers. The pilasters are formed by vertically stacked masonry blocks that are attached to the pier by a reinforcing rod extending upwardly from the pier through a vertical mortarless void in the blocks. A plurality of courses of masonry blocks form block wall panels, each of the blocks in the panels having horizontal mortarless voids therein, the horizontal and vertical joints between adjacent courses being interlocking and mortarless. Selected courses of masonry blocks have a horizontal reinforcing rod attached to each block in the course without mortar or grout.

Abstract: Landscaping blocks for decorative edging are designed to form overlapping or interlocking joints between adjacent blocks, so that weed growth between the blocks is prevented or deterred when the blocks are arranged as a border or edging.

Abstract: A plurality of building blocks (1) form a retaining wall (300), which may be curved, with respective side edges (6, 7) providing pivot points and a stepped base (5) of an upper block (1) being positionable on the upper surface (4) of a lower block (1). The gaps between the blocks 1, and their permeability, being made from permeable concrete, can avoid hydrostatic build up behind the wall (300). The permeability of the concrete used for the blocks (1) is in the range of 10−2 M/s to 10−4 m/s and may be in the region of 6.00×10−3 m/s.

Abstract: The structuring unit is composed of a wall surface member for the construction with a mounting cavity formed therein, such as a stone, and an anchor mounted on the wall surface member for the construction through the mounting cavity thereof. The anchor is provided with a resistance-increasing member at the opposite side thereof. The anchor is composed of a linear member extending over the full length of the anchor, a protective layer for protecting the linear member from physical damages, and a flexible layer for preventing water or the like from penetrating into a gap between the linear member and the protective layer. The construction such as a revetment or the like is built by laying plural rows of the structural units over one another and embedding the plural rows of the structural units with filling materials.

Abstract: A retaining wall block is provided. The retaining wall block includes top, bottom, front, back, first side and second side surfaces. A tongue set is provided on the top surface of the block and a groove in the bottom surface of the block. The tongue set includes a rear-facing surface set that includes first and second curved sections. A block form for forming retaining wall blocks is also provided. A face form for placement on the bottom surface of a block form is also provided. A method of molding retaining wall blocks with a form having hinged doors is also provided. A method of using a face form for forming two blocks of reversed front surface ornamentation is also provided.

Abstract: The invention includes a method for constructing buildings using non-wood construction products and buildings constructed from such non-wood construction products. The invention further includes a method and apparatus for manufacturing high-performance fiber-reinforced cellular concrete (HPFRCC) products and the use of such products as replacements for conventional wood lumber construction products. The products of the invention have the necessary strength, durability, nailability, and sawability for direct substitution for dimensional wood lumber in wood-frame construction applications. The invention also includes externally reinforced retaining wall systems that include stackable blocks formed of fiber-reinforced cellular concrete.

Abstract: A paving block and a paving block assembly include a prism-shaped paving block body having a top surface, a bottom surface disposed opposite the top surface and a first pair of opposing side walls and a second pair of opposing side walls. The first and second pair of opposing side walls are disposed between the top and bottom surfaces with respective ones of the first pair of opposing side walls and the second pair of opposing side walls connected perpendicularly to each other. The top surface has a plurality of longitudinal grooves which are formed therein and extend parallel to each other. Each one of the plurality of grooves has a width substantially equal to each other. The paving block body has at least one projection connected to one of the side walls and positioned between the top and bottom surfaces. The at least one projection projects from the one side wall a distance equal to or substantially equal to the width of the grooves.

Abstract: Ground covering element (2) having the basic shape of a square. On all four basic sides (4.1, 4.2, 4.3, 4.4), there is provided one engaging means (8.1, 8.2, 8.3, 8.4) each. Each of the engaging means is symmetric with respect to a central axis of symmetry (12). Opposite engaging means are mirror images of each other. Each engaging means is complementary with the engaging means on the two basic sides adjoining around the corner. On each of the four corner regions of the ground covering element, there is provided a protrusion (24) having substantially the shape of a rectangular, isosceles triangle or of an area element similar to this triangle with curved legs. By omission of the four protrusions (24), a ground covering element of the second type (42) is obtained which may be laid together with additional ground covering elements of the second type (42) or in combination with ground covering elements of the first type (2).

Abstract: The invention relates to modular building blocks with the minimal possible number of types which can be used for construction of buildings or other structures. The block has cellular structure defined by though openings made in the block body. The number of cells depends on the number of through holes. Each block has an upper and inner insert made of a heat/cold-insulation material and inserted into through openings of the hollow block. The inserts, in turn, have though holes and recesses arranged so that after the blocks with inserts are assembled into a building or a structure, the openings and the recesses in the inserts form a continuous lattice-like space suitable for pouring concrete or another hardenable material which after curing form a load-carrying lattice-like framework of the building or the structure. Thus, the inserts are used as formwork elements for pouring the concrete.

Abstract: A block construction system includes interlocking, self-aligning blocks that can be used to construct structures with mortarless joints. A typical block has a top face that is formed with a raised, substantially flat horizontal portion that extends between a pair of longitudinally aligned rounded edges. Longitudinally aligned horizontal stop surfaces extend from each rounded edge. A bottom face of the block is formed with a pair of longitudinally aligned stop surfaces and a substantially flat portion that is positioned between and recessed from the stop surfaces. For two stacked blocks, the recessed portion of the top block receives and engages the raised portion of the bottom block preventing lateral movement of one block relative to the other. To interlock adjacent blocks on a common course, one end face of each block is formed with a vertically aligned tongue and the other end face is formed with a corresponding groove.

Abstract: A masonry block wall system is disclosed comprising a plurality of piers positioned at predetermined intervals with a pilaster mounted on each of the piers. The pilasters are formed by vertically stacked masonry blocks that are attached to the pier by a reinforcing rod extending upwardly from the pier through a vertical mortarless void in the blocks. A plurality of courses of masonry blocks form block wall panels, each of the blocks in the panels having horizontal mortarless voids therein, the horizontal and vertical joints between adjacent courses being interlocking and mortarless. Selected courses of masonry blocks have a horizontal reinforcing rod attached to each block in the course without mortar or grout.

Abstract: A building block or panel having a shape of a parallelpiped including four edge faces (11, 13, 15 and 17) and two opposed major faces (19 and 21), the edge faces being formed to be interlockingly engageable with the edge faces on similar building blocks, each edge face including lateral zones which are located to one or the other side of the central longitudinal axis of the edge face, one zone of each edge face being formed with a recess (23) and the other zone of each edge face being of a complementary configuration to the one zone, the recesses on opposed edge faces being of corresponding configuration.

Abstract: The invention is a self-aligning cementitious block and a wall system of such blocks stacked and joined by mortar to form a vertically oriented wall structure, where the block comprises alignment means which correctly align the block relative to the blocks upon which it is stacked such that the side walls are parallel to the side walls of the lower blocks. The alignment means comprise tongue members and groove members of corresponding configuration, where the tongue members preferably extend downward from the two end walls and the middle wall a distance below the lower edges of the side walls, and where the groove members are positioned on the tops of the end walls and middle wall, the groove members of inferior or lower blocks receiving the tongue members of a superior or upper block stacked thereupon. Starter blocks with a flat underside and corner blocks are also provided.

Abstract: An interlocking segmental retaining wall. The wall includes a plurality of blocks stacked upon each other. Each block includes a void filled with aggregate. In addition, each block includes an extension and slot for interlocking the blocks together to form the retaining wall. Each block also includes a plurality of lugs and an indentation for aligning and stacking the blocks on each other. The blocks may also be stacked to form a curved retaining wall. In an alternate embodiment, the blocks may have tabs located on an upper portion of each block. Each block is laterally positioned by centering the block upon the top of two lower block.

Abstract: A retaining wall comprising a series of differently sized, pre-formed horizontal and vertical blocks. Each block includes a projection and a recess, with the projection and recess arranged and configured so that each projection effectively engages a recess in an adjacent course to operatively connect adjacent courses together. The horizontal, blocks are formed in incremental thicknesses and may be stacked in various combinations equivalent to the height of the vertical, blocks. The location of the abutment member relative to the block may be varied to enable adjacent courses to be coplanar or tiered in a variety of predetermined offset distances.

Abstract: An interlockable element for a structure assembly set includes an at least partially planar body and a connector edge having associated therewith a first A-type and B-type connector pair disposed about a first axis of rotation and a second A-type and B-type connector pair disposed about a second axis of rotation. The first and second axes of rotation are disposed on opposing sides of a generally rectangular quadrilateral of a specified dimension. Each of one pair of diagonally opposite vertices of the quadrilateral are situated internally to each of the A-type connectors and each of the other pair of diagonally opposite vertices of the quadrilateral are situated internally to each of the B-type connectors; and the quadrilateral is generally disposed in a plane that is generally perpendicular to the plane of the body of the interlockable element. The A-type connectors are interlockable with the B-type connectors.

Abstract: A saddle-shaped opaque molded stone like structure having two identical convex sides (10) joined by four identical rounded corners (14) and two identical concave sides (12). The overall size of the curved surfaces, along with the color and surface texture of my invention can vary so that it will match the size, the color and surface texture of the various round stone like pavers that it will be used in conjunction with.

Abstract: The invention concerns a modular wall or double wall element (S) for dry assembly characterized in that some at least (1a, 1b, 31a, 31b) of its faces arranged to co-operate with adjacent modular elements have contact parts (2a, 2b; 32a, 32a, ′ 32b, 32b′) designed to be pressed against said adjacent modular elements, and separating parts (3a, 3a′, 3b, 3b′ 33a′, 33b) arranged to remain separated by a clearance of said adjacent modular elements, said clearance being sufficiently large to limit, even eliminate, infiltration of water by capillary action. The invention is applicable to the field of construction building.