Glossary of Home/Building Structural Components

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The following terms define Building and Machine Parts

- V-

valley: V shaped depression at intersection of two sloping roofs.

valley jacks: rafters that extend from ridgepole to valley rafter.

valley rafter: diagonal rafter that extends from ridgepole to top plate to form intersection of two sloping roofs.

valve: device that regulates flow of liquid or gas.

vane: flattened, curved piece on revolving wheel.

vapor barrier: section of material that resists passage of water vapor.

vent: opening, especially in wall serving as outlet for air, smoke, or fumes.

vent stack: top section of soil stack that extends out through roof.

volute spring: conical coil spring extending in direction of axis of coil.