This specification covers the material characteristics, physical requirements, and sampling method appropriate to the selection of limestone dimension stone for general building and structural purposes. Dimension limestone shall include stone that is sawed, cut, split, or otherwise finished or shaped and shall specifically exclude molded, cast, or otherwise artificially aggregated units of composed fragments, and also crushed and broken stone. The stones shall be classified into three categories (low-density, medium-density, and high-density) according to their densities in approximate ranges. The physical property requirements to which limestone shall adhere to are absorption by weight, density, compressive strength, modulus or rupture, and abrasion resistance.