cold-weather concrete
11Rail tracks — are used on railways (or railroads), which, together with railroad switches (or points), guide trains without the need for steering. Tracks consist of two parallel steel rails, which are laid upon sleepers (or cross ties) that are embedded in… …
12environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …
13TexSys — [http://pavements.ce.utexas.edu/TexSys/ TexSys] is a web based application serving as a Texas Expert System for the selection of Hot Mix Asphalt (HMA). TexSys is the product of a Texas Department of Transportation (TxDOT) study, TxDOT Project 0… …
14Construction of the Trans-Alaska Pipeline System — The construction of the Trans Alaska Pipeline System was a massive undertaking involving tens of thousands of people often in extreme temperatures and conditions. Specialized construction techniques were pioneered to build the pipeline, most of… …
15Blizzard of 1977 — Snow drifts made travel difficult in parts of New York (February 7, 1977), shown is the city of Buffalo …
16Osan Air Base — Part of Pacific Air Forces (PACAF) Located near: Osan, South Korea …
17international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …
18Operation Barbarossa — Part of the Eastern Front of World War II …
19Building material — For other kinds of building materials, see Hardware, Biology, and Star formation. Concrete and metal rebar used to build a floor Building material is any material which is used for a construction purpose. Many naturally occurring substances, such …
20McKinley Climatic Laboratory — U.S. National Register of Historic Places …
