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A Lev door or convection door is an internal floor-to-ceiling (full height) door, consisting of a standard door leaf and an upper leaf in place of the usual header wall. The leaves may or may not be separated by a transom. The doors enable effective convection of warm air.
Door of 10 Downing Street, London, showing a transom separating the door from the window above. In architecture, a transom is a transverse horizontal structural beam or bar, or a crosspiece separating a door from a window above it. This contrasts with a mullion, a vertical structural member. [1] Transom or transom window is also the customary U ...
While these curtain wall systems are more energy-efficient than older, single-glazed versions, they are still significantly less efficient than opaque (solid) wall construction. [13] For example, nearly all curtain wall systems, thermally-broken or otherwise, have a U-value of 0.2 or higher, which is equivalent to an R-value of 5 or lower. [14]
[5] [9] This is particularly important in traditional buildings, in which charcoal is burned, [5] and damp evaporates from the ground in the crawlspace under the raised wooden floor. [60] Ranma (transom/fanlight panels above the sliding panels and kamoi) may have openings to further encourage breezes to pass through the building. [10]
Diagram of a revolving door, viewed from above. Around the central shaft of the revolving door, there are usually three or four panels called wings or leaves.Large diameter revolving doors can accommodate pushchairs and wheeled luggage racks - such large capacity doors are sometimes H-shaped to split the circle into only two (hence larger) parts.
A recently announced class action lawsuit filed against T-Mobile alleges the company has disguised a hidden fee as a government charge for two decades.. The wireless network allegedly ...
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