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Glossary of Home/Building Structural Components

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The following terms define Building and Machine Parts

- D -

dam: barrier to water flow.

deck: horizontal structure extending from exterior wall.

door frame: casing around door front which it's hinged or hung.

doorjamb: door home cut into wall.

dovetail joint: projecting, wedge-shaped tenor that fits into mortise.

dowel: cylindrical length of wood used to fasten or hang.

downspout: vertical pipe that carries water from root to ground.

drain: pipe or titter for removal of fluid.

drip cap: molding at exterior top side of doors and windows that sheds rain.

duct: pipe or channel for passage of gas or liquid.

ductwork: system of ducts used lot heating, ventilation, or cooling.