Abstract:
A block suitable for use in an arrangement of blocks that are interlocked. The block may comprise: a first side surface extending between a first edge and a second edge, the first side surface being irregular and having a first half and a second half that are congruent; a second side surface extending between the second edge and a third edge, the second side surface having a first half and a second half that are congruent; a third side surface extending between the first edge and a fourth edge, the third side surface being congruent with a first portion of the first side surface; a fourth side surface extending between the third edge and a fifth edge, the fourth side surface being congruent with a second portion of the first side surface such that the first portion and the second portion of the first side surface constitute the first side surface; and a fifth side surface extending between the fourth edge and the fifth edge, the fifth side surface having a first half and a second half that are congruent. The arrangement of blocks may be part of a paved surface, a wall or another structure, or may be used in various other applications.
Abstract:
An apparatus for molding dry cast products having a textured side surface is disclosed. The apparatus comprises an open compartment for receiving a dry concrete mixture and a plurality of walls laterally enclosing the compartment. At least one of the walls has a multilevel surface with a plurality of sections in an overhanging relationship with each other and transitional curvilinear steps bridging adjacent one of the sections to impart a textured side surface resembling a natural rockface and allowing stripping of the dry cast products from an open bottom side of the compartment.