Search results
Results from the WOW.Com Content Network
Oldcastle Materials Inc. is a supplier of asphalt, concrete, and other building materials, and also offers construction and paving services. The Atlanta-based company is a subsidiary of CRH plc, a publicly traded international group of diversified building materials businesses, [2] [3] and has approximately 18,000 employees at 1,200 locations, as of March 2018.
Oldcastle glass was created through the merging of multiple glass manufacturers, including Hordis Brothers (marketed as "Arm-R-Clad"), HGP Industries, [1] United Tempering Systems, North American Glass, O&W Glass, Downey Glass, Glass Distributors of America, General Glass, Tempglass, Armourguard Glass Products, Wescan Glass Industries, Free State Glass Industries, and Oldcastle Specialty Glass.
CRH entered the United States in 1978 by buying Amcor, a concrete products group in Utah which would then form the basis of the company's U.S. division, which is now called Oldcastle Inc. Subsequent large purchases in the US included Callanan Industries, a New York State based aggregates and asphalt producer in 1985.
A schematic view of a station box. A station box is a term in the construction industry: It describes a box-like underground structure for a transportation system, for example a metro or tube station. [1] Station boxes are built in two methods – "top-down" or "bottom-up".
Directional boring machine. Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig.
Archaeologists found three more ceramic jars of coins in nearby ruins of a masonry building from medieval France.
A utility vault is an underground room providing access to subterranean public utility equipment, such as valves for water or natural gas pipes, or switchgear for electrical or telecommunications equipment. A vault is often accessible directly from a street, sidewalk or other outdoor space, thereby distinct from a basement of a building. [1] [2]
Tunnel Construction. Tunnels are dug in types of materials varying from soft clay to hard rock. The method of tunnel construction depends on such factors as the ground conditions, the ground water conditions, the length and diameter of the tunnel drive, the depth of the tunnel, the logistics of supporting the tunnel excavation, the final use and shape of the tunnel and appropriate risk management.