reinforced-concrete support
51Permanent way — The permanent way means the physical elements of the railway line itself: generally the pairs of rails typically laid on sleepers embedded in ballast, intended to carry the ordinary trains of a railway. This page describes British practice and… …
52Underpinning — In construction, underpinning is the process of strengthening and stabilizing the foundation of an existing building or other structure. Underpinning may be necessary for a variety of reasons: The original foundation is simply not strong or… …
53Narrows Bridge (Perth) — The Narrows Bridge seen prior to the completion of the railway line The Narrows Bridge is a freeway crossing of the Swan River in Perth, Western Australia, at The Narrows between Mill Point and Mount Eliza. Made up of two road bridges and a… …
54Planning for the Battle of Iwo Jima — In anticipation of the Battle of Iwo Jima, Lieutenant General Tadamichi Kuribayashi prepared a defense that broke with Japanese military doctrine. Rather than defending the beaches, Kuribayashi devised a defense that maximized enemy attrition.… …
55LACMTA Expo Line — The Metro Expo Line of the Los Angeles County Metro Rail is a light rail line currently under construction in Los Angeles County, California, USA, which will run from Downtown Los Angeles to Culver City and eventually to Santa Monica. Its route… …
56World War II — the war between the Axis and the Allies, beginning on September 1, 1939, with the German invasion of Poland and ending with the surrender of Germany on May 8, 1945, and of Japan on August 14, 1945. Abbr.: WWII * * * or Second World War (1939–45)… …
57One World Trade Center — Freedom Tower redirects here. For other uses, see Freedom Tower (disambiguation). For the building complex destroyed in the September 11 attacks, see World Trade Center. For the specific WTC building formerly known as One World Trade Center, see… …
58Column — For other uses, see Column (disambiguation). National Capitol Columns at the United States National Arboretum in Washington, D.C …
59Masonry — This article refers to the building structure component; for the fraternal organization, see Freemasonry. A mason laying mortar on top of a finished course of blocks, prior to placing the next course. Masonry is the building of structures from… …
60Boden Fortress — Infobox Military Structure name=Boden Fortress location=Boden, Norrbotten, Sweden caption=Rödberget Fort, part of Boden Fortress, seen from the north. The caponier ditch and the armored turrets are clearly visible, as well as the magnificent view …
