General

General

base elbow

A cast-iron pipe elbow having a baseplate or flange cast on it, by which it is supported.

General

base line

A surveyed line which has been established with more than usual care, and to which surveys are referred for coordination

General

base map

In urban planning, a map indicating the significant existing physical features of an area, i.e., streets, rivers, parks, railroads, etc.,

General

basement

1. Usually the lowest story of a building, either partly or entirely below grade. Also see cellar, American basement. 2.

General

basement house

A house whose rooms are mainly located above ground level but whose entrance, from the exterior, is at ground level

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