piping penetration
21Deep foundation — A deep foundation installation for a bridge in Napa, California, United States …
22Shallow foundation — A shallow foundation is a type of foundation which transfers building loads to the earth very near the surface, rather than to a subsurface layer or a range of depths as does a deep foundation. Shallow foundations include spread footing… …
23HISTORICAL SURVEY: THE STATE AND ITS ANTECEDENTS (1880–2006) — Introduction It took the new Jewish nation about 70 years to emerge as the State of Israel. The immediate stimulus that initiated the modern return to Zion was the disappointment, in the last quarter of the 19th century, of the expectation that… …
24Supercavitation — is the use of cavitation effects to create a large bubble of gas inside a liquid, allowing an object to travel at great speed through the liquid by being wholly enveloped by the bubble. The cavity (the bubble) reduces the drag on the object and… …
25Yorkshire Television — Infobox ITV franchisee name = Yorkshire Television based = Leeds, West Yorkshire area = Yorkshire from 1968 and Lincolnshire from 1974 owner = ITV plc airdate = 29 July 1968 old Former Yorkshire Television logos. captionb = closeddate = Lost on… …
26Remotely operated underwater vehicle — Remotely operated vehicle redirects here. For vehicles operating out of water, see remote control vehicle. ROV at work in an underwater oil and gas field. The ROV is operating a subsea torque tool (wrench) on a valve on the subsea structure. A… …
27Compressed-air energy storage — (CAES) refers to the compression of airto be used later as energy source. At utility scale, it can be stored during periods of low energy demand (off peak), for use in meeting periods of higher demand (peak load). Alternatively it can be used to… …
28P-61 Black Widow — Infobox Aircraft name = P 61 Black Widow caption = A P 61A 1NO of 419th Night Fighter Squadron type = Night fighter national origin= United States manufacturer = Northrop designer = first flight = 26 May 1942 introduced = 1944 retired = 1952… …
29Energy development — Schematic of the global sources of energy in 2006 2007 …
30Bathtub — A bath (IPAEng|bɑ:θ), bathtub (AmE), or tub (s in. acrylic or fiberglass, but alternatives are available in enamel over steel or cast iron, and occasionally wood. A bathtub is usually placed in a bathroom either as a stand alone fixture or in… …
