reinforced concrete pipe
21Structural steel — Various structural steel shapes Structural steel is steel construction material, a profile, formed with a specific shape or cross section and certain standards of chemical composition and mechanical properties. Structural steel shape, size,… …
22brick and tile — ▪ building material Introduction structural clay products, manufactured as standard units, used in building construction. The brick, first produced in a sun dried form at least 6,000 years ago and the forerunner of a wide range of… …
23Eastern span replacement of the San Francisco — San Francisco – Oakland Bay Bridge (eastern span replacement) Artistic rendition of the new eastern span of the Bay Bridge seen from Treasure Island (ca. 2014) Official name To be determ …
24List of crossings of the River Severn — Motorway crossings over the River Severn Second Severn Crossing (M4 motorway) …
25British anti-invasion preparations of World War II — entailed a large scale division of military and civilian mobilization in response to the threat of invasion by German armed forces in 1940 and 1941. The army needed to recover from the defeat of the British Expeditionary Force in France, and 1.5… …
26Voided biaxial slab — Voided biaxial slabs are reinforced concrete slabs in which voids reduce the amount of concrete.While concrete have been used for thousands of years, the use of reinforced concrete is a relative recent invention, usually attributed to Joseph… …
27Norcon pillbox — Deployed throughout the United Kingdom Extant example of Norcon Pillbox at Moreton Ford, near Weymouth …
28Stockton landmarks — The city of Stockton boasts numerous historical buildings and sites, several of which are on the National Register of Historic Places and California Historical Landmark lists.Historic Sites* Site of first building in present city of Stockton… …
29tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
30arts, East Asian — Introduction music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature. Some studies of East Asia… …
