HC-Lecture32-Windows-and-Doors

HC-Lecture32-Windows-and-Doors - Heavy Construction Heavy...

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Unformatted text preview: Heavy Construction Heavy Construction Lecture #32 Lecture #32 indows and Doors Windows and Doors L Prieto-Portar 2008 Windows and doors are like the eyes and mouth of a building: elements of beauty. Windows. The word windows comes from an early English expression meaning wind eye . Window have evolved throughout human evolution from holes in skins on stick frames (still seen in Arab nomad tribes) to fabrics, to translucent membranes, to glass, and then to multiple layers of glass panes to control heat and flying objects. Windows are currently built in factories to attain higher efficiencies, lower costs and higher quality. Windows can be a prime window which is permanently installed, a storm window which can be removed as an auxiliary unit, and a combination window which incorporates both. Today, the combination window is the most commonly used. Types of windows and doors. Fixed, single-hung, double-hung and sliding windows. Casement, awning and hopper windows. Skylight and roof windows. Terrace door, French door and sliding doors. Double-hung windows. Fixed windows. A top-hinged window and a side-hinged window. Window Frames Wooden Windows. The advantages of wooden windows are (1) wood is a good thermal insulator, and (2) wood is easily worked. The disadvantages are (1) wood shrinks and swells, (2) wood easily decays, and requires frequent repainting (high maintenance). Modern wooden windows commonly use a wood composite, which is a wood core with an exterior cladding of plastic or aluminum....
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HC-Lecture32-Windows-and-Doors - Heavy Construction Heavy...

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