the span of an arch
1span — span1 [span] n. [ME spanne < OE sponn, akin to Ger spanne < IE * (s)pen(d) , to pull, draw (> SPIN, Gr span, to pull) < base * spe , to pull, extend] 1. a unit of linear measure equal to nine inches, based on the distance between the… …
2Arch — • A structure composed of separate pieces, such as stone or bricks, having the shape of truncated wedges, arranged on a curved line so as to retain their position by mutual pressure Catholic Encyclopedia. Kevin Knight. 2006. Arch Arch …
3ARCH — The arch was invented around 2500 BC in the Indus Valley of ancient India. It is a curved structure that rests on posts or walls and allows for the spanning of an architectural space. Prior to the use of the arch, the post and lintel structure …
4Arch-gravity dam — Arch gravity Hoover Dam Architectural Plans An arch gravity dam, curved gravity dam or arched dam is a dam with the characteristics of both an arch dam and a gravity dam. It is a dam that curves upstream in a narrowing curve that directs most of… …
5arch — arch1 [ärch] n. [ME < OFr arche < ML arca < L arcus, arch: see ARC] 1. a curved structure, as of masonry, that supports the weight of material over an open space, as in a bridge, doorway, etc. 2. any similar structure, as a monument 3.… …
6Span — Span, v. t. [imp. & p. p. {Spanned}; p. pr. & vb. n. {Spanning}.] [AS. pannan; akin to D. & G. spannen, OHG. spannan, Sw. sp[ a]nna, Dan. sp[ae]nde, Icel. spenna, and perh. to Gr. ? to draw, to drag, L. spatium space. [root]170. Cf. {Spin}, v. t …
7The Darkness (comics) — The Darkness The Darkness. Art by Marc Silvestri Publication information Publisher Image Comics …
8Arch 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 …
9arch — arch1 /ahrch/, n. 1. Archit. a. a curved masonry construction for spanning an opening, consisting of a number of wedgelike stones, bricks, or the like, set with the narrower side toward the opening in such a way that forces on the arch are… …
10span — 1. n. & v. n. 1 the full extent from end to end in space or time (the span of a bridge; the whole span of history). 2 each arch or part of a bridge between piers or supports. 3 the maximum lateral extent of an aeroplane, its wing, a bird s wing,… …
