Abstract:
Walkable foot plates are laid directly on a concrete slab or a water resistant layer on a roof. Each foot plate has crack inducing grooves which divide the plate into blocks which are connected to each other by weak joint portions defined by the grooves. The foot plate cracks along the grooves to be accommodated to uneven surface portions of the slab or layer. Flexible reinforcing material extends across the weak joint portions to maintain the blocks connected to each other after the weak joint portions are cracked.
Abstract:
A covering unit for use in combination with similar units for covering a surface with a natural random look, the unit having an hexagonal body comprising first, second and third pairs of opposed and parallel sides. Each side has a central point of angular symmetry. The second and third pairs are similar to each other while the first pair is different from the others. The sides of the second and third pairs are provided with at least one split deviation along their length arranged so that each side of the second pair is a rotational image of the sides of the third pair, whereby in use in combination with other covering units: each side is matingly engageable with the sides of an equivalent pair of a neighboring unit; and the unit has a central point of angular symmetry and is matingly engageable with a plurality of neighboring unit.
Abstract:
A predominantly concrete mat comprises a concrete slab having two longitudinal edges and two transverse edges and having relatively thicker portions and relatively thinner portions, which include relatively thinner portions among the longitudinal and transverse edges, and a flexible grid embedded in the concrete slab. The flexible grid, which is polymeric, is molded so as to have longitudinally extending members and transversely extending members. End portions of specific ones but not all of the longitudinally extending members of the flexible grid extend into and nearly or completely through the relatively thinner portions along the transverse edges of the concrete slab. End portions of specific ones but not all of the transversely extending members of the flexible grid extend into and nearly or completely through the relatively thinner portions along the longitudinal edges of the concrete slab.
Abstract:
A covering unit for use in combination with similar units for covering a surface with a natural random look, the unit having an hexagonal body comprising first, second and third pairs of opposed and parallel sides. Each side has a central point of angular symmetry. The second and third pairs are similar to each other while the first pair is different from the others. The sides of the second and third pairs are provided with at least one split deviation along their length arranged so that each side of the second pair is a rotational image of the sides of the third pair, whereby in use in combination with other covering units: each side is matingly engageable with the sides of an equivalent pair of a neighbouring unit; and the unit has a central point of angular symmetry and is matingly engageable with a plurality of neighbouring unit.
Abstract:
A covering unit for use in combination with similar units for covering a surface with a natural random look, the unit having an hexagonal body comprising first, second and third pairs of opposed and parallel sides. Each side has a central point of angular symmetry. The second and third pairs are similar to each other while the first pair is different from the others. The sides of the second and third pairs are provided with at least one split deviation along their length arranged so that each side of the second pair is a rotational image of the sides of the third pair, whereby in use in combination with other covering units: each side is matingly engageable with the sides of an equivalent pair of a neighbouring unit; and the unit has a central point of angular symmetry and is matingly engageable with a plurality of neighbouring unit.
Abstract:
A ground covering slab is subdivided into neighboring preformed individual stones interconnected along rupture zones of which at least parts extend non-rectilinearly from one edge of the slab to the opposite edge of the slab as seen in plan view and the preformed individual stones are of at least two kinds differing in size distributed throughout the slab.
Abstract:
A set of cast concrete paving slabs is laid in a pattern side by side and end to end to cover an area to be paved. Each of the slabs members has side and end spacer abutments to hold an adjacent slab member at a predetermined spacing. Each of the slabs has a longitudinal slot in the upper surface defining a false joint parallel to the sides so as to divide the upper surface into parallel strips. There are different types of slabs some with both strips divided by transverse slots and some with only one strip with a slot. This forms in the finished product apparent strip pieces of many different lengths to simulate wood planks. Each of the parallel strips has a molded upper surface defining a series of wavy lines recessed from other parts of the upper surface and dyed darker than the remaining part of the slab thus simulating a wood grain appearance.
Abstract:
A covering unit for use in combination with similar units for covering a surface with a natural random look, the unit having an hexagonal body comprising first, second and third pairs of opposed and parallel sides. Each side has a central point of angular symmetry. The second and third pairs are similar to each other while the first pair is different from the others. The sides of the second and third pairs are provided with at least one split deviation along their length arranged so that each side of the second pair is a rotational image of the sides of the third pair, whereby in use in combination with other covering units: each side is matingly engageable with the sides of an equivalent pair of a neighboring unit; and the unit has a central point of angular symmetry and is matingly engageable with a plurality of neighboring unit.
Abstract:
In the manufacture of an articulated, predominantly concrete mat, which comprises concrete blocks and a flexible geogrid embedded in such blocks and in which the flexible geogrid defines flexible members connecting such blocks to one another, an intermediate article being a concrete slab is cast, in which a flexible geogrid is embedded. The slab has relatively thinner portions, along which the slab is breakable to form such blocks, and relatively thicker portions, which become such blocks when the slab is broken along the relatively thinner portions. The relatively thicker portions are arranged in parallel rows and are staggered in adjacent rows, before the slab is broken therealong, and the relatively thicker portions in alternate rows are aligned in parallel columns, before the slab is broken therealong.
Abstract:
A set of paving blocks wherein each block is a prism having side and end walls that are irregular in outline but are contained only within a respective virtual rectangular perimeter. The rectangular perimeter has a length L in a X axis and a width W in a Y axis at right angle to the X axis. At least two spaced apart parallel sections of the prism extend between the side walls, parallel to the Y axis and terminate at the virtual rectangular perimeter, such that each section has a width equal to W and the prism has at least one section bisecting the virtual rectangle parallel to the X axis and terminating at a rectangular perimeter and having a length equal to L.