4 Terms
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Lumber
Timber after it has been sawed and split into planks or other smaller components that can be used as building material.
Industry: Building materials
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Lumber
rafter
Building materials; Lumber
A sloped roof framing member that supports the roof sheathing, as well as live and dead loads, that are placed on the roof.
rail
Building materials; Lumber
Any relatively lightweight horizontal element, especially those found in fences. Also the horizontal pieces between panels in a panel door.
retaining wall
Building materials; Lumber
A structure that holds back a slope and prevents errosion.
ridge board
Building materials; Lumber
The topmost beam at the peak of a roof to which the rafters tie.
rise
Building materials; Lumber
The vertical distance from one point to another above it; a measurement you need in planning a stairway or ramp.
