Design Dictionary 199 Ideabooks

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....
Open Web Steel Joist
An open web steel joist (OWSJ) is a lightweight steel web between beams that utilizes the strength of a triangle; the beamed trusses are run parallel to one another to support roofs or the floor above.
Cladding
Cladding refers to the outer material applied to a structure. It forms a protective coating and also enhances the structure's exterior appearance.
Rafters
Rafters are a sloped set of parallel beams that form the frame of a roof. They can be made of wood, reinforced concrete or steel.
Joist
A joist is a horizontal beam placed parallel in a set that carries the flat load above it. Joists can support a ceiling or a floor.
Witch's Hat Roof
A witch's hat roof is a variation of a cone roof. Shaped just like its name, it has a skinny peaked top and flares at the bottom.
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....
Glulam
Glulam is the nickname for glue-laminated wood. Thin sheets of wood are pressure bonded with waterproof adhesives, resulting in a timber material that is stronger than conventional woodcan cover longer spans, since it is stress engineered and not sawn...
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....
Jib Door
A jib door is nearly invisible, or at least disguised from being recognized as a door. It may have the same moldings or wall treatment as the surrounding wall, but door hardware is usually absent.
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