all-welded structure
81Roof — A roof is the covering on the uppermost part of a building. A roof protects the building and its contents from the effects of weather. Structures that require roofs range from a letter box to a cathedral or stadium, dwellings being the most… …
82Rivet — A rivet is a mechanical fastener. Before it is installed it consists of a smooth cylindrical shaft with a head on one end. The end opposite the head is called the buck tail. On installation the rivet is placed in a pre drilled hole. Then the tail …
83Australia — /aw strayl yeuh/, n. 1. a continent SE of Asia, between the Indian and the Pacific oceans. 18,438,824; 2,948,366 sq. mi. (7,636,270 sq. km). 2. Commonwealth of, a member of the Commonwealth of Nations, consisting of the federated states and… …
84materials science — the study of the characteristics and uses of various materials, as glass, plastics, and metals. [1960 65] * * * Study of the properties of solid materials and how those properties are determined by the material s composition and structure, both… …
85Construction of One World Trade Center — was deferred until 2006 because of disputes between port authority and the developer. Tishman Realty Construction,[1] is the selected builder. The building reached ground level on May 17, 2008 and is scheduled to be completed by the end of 2012… …
86Space Shuttle main engine — SSME redirect here. For the services field, see Service Science, Management and Engineering infobox rocket engine imsize=250 caption=Space Shuttle Main Engine test firing name=Space Shuttle Main Engine country of origin=United States manufacturer …
87German Resistance — The German Resistance refers to those individuals and groups in Nazi Germany who opposed the regime of Adolf Hitler between 1933 and 1945. Some of these engaged in active plans to remove Hitler from power and overthrow his regime. Their plans… …
88airplane — /air playn /, n. 1. a heavier than air aircraft kept aloft by the upward thrust exerted by the passing air on its fixed wings and driven by propellers, jet propulsion, etc. 2. any similar heavier than air aircraft, as a glider or helicopter. Also …
89military aircraft — Introduction any type of aircraft that has been adapted for military use. Aircraft have been a fundamental part of military power since the mid 20th century. Generally speaking, all military aircraft fall into one of the following… …
90Deck (ship) — For other uses, see Deck. A deck is a permanent covering over a compartment or a hull[1] of a ship. On a boat or ship, the primary deck is the horizontal structure which forms the roof for the hull, which both strengthens the hull and serves as… …
