required arch length

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• length — Linear distance between two points. arch l. the amount of space required for the permanent teeth as measured from the mesial aspect of the first molar on one side to the mesial aspect of the first molar …   Medical dictionary

• Arch bridge — This article is about the structure type. For the bridge in Bellows Falls, Vermont, see Arch Bridge (Bellows Falls). Arch Bridge Double arch stone bridge, Japan Ancestor Clapper bridge Related …   Wikipedia

• Skew arch — A skew arch (also known as an oblique arch) is a method of construction that enables an arch bridge to span an obstacle at some angle other than a right angle. This results in the faces of the arch not being perpendicular to its abutments and its …   Wikipedia

• Navajo Bridge — View to east with 1929 bridge at left, 1995 bridge at right A portion of the Echo Cliffs is in the background. Official name Navajo Steel Arch Highway Bridge Carries …   Wikipedia

• Vidraru Dam — is a dam in Romania. It was built in 1965 on the Argeş River. It is an arch dam built on a foundation of rock, and it was built to produce hydroelectricity. Its construction has also created a reservoir, Lake Vidraru. Dam height is 166 meters,… …   Wikipedia

• Seventh Street Improvement Arches — Infobox Bridge bridge name=Seventh Street Improvement Arches caption=A view of the Seventh Street Improvement Arches from the north side. The asphalt trail is the Bruce Vento Regional Trail. official name= carries=Four lanes of East Seventh… …   Wikipedia

• deficiency — An insufficient quantity of some substance (as in dietary d. or hemoglobin d. in marrow aplasia); organization (as in mental d.); activity (as in enzyme d. or reduced oxygen carrying capacity of the blood), etc., of which the amount present is of …   Medical dictionary

• tunnels 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 …   Universalium

• architecture — /ahr ki tek cheuhr/, n. 1. the profession of designing buildings, open areas, communities, and other artificial constructions and environments, usually with some regard to aesthetic effect. Architecture often includes design or selection of… …   Universalium

• building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

• bridge — bridge1 bridgeable, adj. bridgeless, adj. bridgelike, adj. /brij/, n., v., bridged, bridging, adj. n. 1. a structure spanning and providing passage over a river, chasm, road, or the like. 2. a connecting, transitional, or intermediate route or… …   Universalium