Assemblable fire pit and outdoor grill from concrete based artificiall stone

A modular outdoor barbeque grill and firepit is constructed of artificial stone-like slab members, which permit a uniform construction method by utilizing only a single block with a universal joint configuration to create an easily assembled, disassembled, re-assembled, and inexpensively manufactured product. Simple variation in the slab members' length, as well as relocation of the joint permits tremendous versatility of product design without increasing complexity of assembly. Slab members are cast of air-entrained concrete in elastomeric molds for reduced density and lighter weight members, which have advantageous thermal properties, exhibit greater longevity in adverse weath conditions, and may be so formed with pigments to resemble stone, brick, or decorative mosaic tile. The ease of construction by the design of this invention also permits quick transition between a backyard fire pit and a barbeque grill with a sophisticated appearance.