Run of rafter


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Run of rafter

In building, the horizontal distance from the face of a wall to the ridge of the roof; this distance is represented by the base of a right-angle triangle.

run

run, 3
1. In roofing, the horizontal distance from the face of a wall to the ridge of the roof.
2. In stairways, the width of a single stair tread.
3. The horizontal distance covered by a flight of steps.
4. The runway or track for a sash.
5. A small stream of paint flowing vertically on a