Design Dictionary 199 Ideabooks

Trapdoor
The beauty of a trapdoor is its footprint. When open, a trapdoor provides access to spaces below or above in an almost covert manner. When closed, the trapdoor is a flush surface, a load-bearing floor or a hatchway to an attic. No square footage is...
Decomposed Granite
Decomposed granite (DG) is the natural result of granite rock's breaking down into small, loose, powdered gravel. Common uses for DG are pathways, gardens, sports courts and nature trails. DG has excellent drainage and does not absorb heat like concrete...
Oriented Strand Board
Oriented strand board, or OSB, is used in construction as a sheathing or substrate material. Wood flakes, sawdust and a synthetic resin are hot pressed to form an inexpensive and strong plywood alternative. One flaw to know: It expands when wet.
Zinc
Zinc, a versatile metal, can be used on its own or combined with copper, lead, tin or aluminum when used as an alloy. Iron nails dipped in zinc keep rust at bay, and large surface areas can be electroplated with zinc to make them less prone to corrosion....
Carriage Doors
Carriage doors swing out from the center with the aid of side hinges. Traditionally they were opened manually to allow horse-drawn carriages to pass in and out. They can be found on carriage houses, barns, garages, stables and firehouses....
Colonnade
A colonnade is a series of evenly spaced columns that create an outdoor room. It can be attached to a building or freestanding, and it can have a roof or not.
Lean-to
A lean-to refers to a roof with a single slope, or to a building that has three walls and a single sloping roof. Lean-tos can also be exterior additions that abut an existing wall and have a roof that slants downward.
Cross-Hipped Roof
A cross-hipped roof is a popular variation of a hip roof, which gently slopes on all four sides. For a cross, the two hip roofs are laid out in an "L," installed perpendicular to each other. These roofs are great for areas with strong winds...
Header
A header is used when framing a large opening in the construction of walls, windows or foundations. It is a heavy horizontal beam that transfers weight from a rough opening to the parallel studs, joists...
Cove Lighting
Cove lighting is built into ledges, trays, recesses and cornices of a room and illuminates walls and ceilings while being hidden.
Corbel
A corbel is a structural or decorative bracket placed between a vertical wall and a horizontal surface (ceiling, counter, tabletop, roof). Corbels are made from wood, plaster or marble, and reproduction corbels are often made with synthetic material....
Vestibule
A vestibule is a small room, hallway or passageway that connects the entry of a house with its interior. The area can be completely or partially enclosed.
Truss
A truss is a triangular brace that supports the weight of a roof. In its basic form, it consists of two sloping rafters and one horizontal joist, though there are variations that support beams while featuring interesting angles.
Trestle
A trestle is the bridgelike structure that can be found supporting a tabletop. It consist of two vertical towers, or legs, and a horizontal brace.
Trellis
A trellis is a vertical, or almost vertical, grid composed of wood or metal strips set in a frame. It provides support for climbing vines or other plants.
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