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A door draught excluder is placed at the bottom of a door to cover the gap located at the threshold. [1] [2] In the Victorian era these draught excluders would be sausage-shaped and made from fabric stuffed with sawdust. [3] Tubular sand-filled fabric draught excluders are commonly referred to as "door snakes" in Australia.
A threshold is the sill of a door. Some cultures attach special symbolism to a threshold. It is called a door saddle in New England. [citation needed] Door thresholds cover the gap between the floor and the door frame, helping to prevent any water leaks, insects or draughts from entering through the opening.
This parameter is written as G/T, and has units of dB·K −1. G/T Calculation. G/T is the figure of merit for a satellite system. G is the Receive antenna gain. T is the system noise temperature. System noise temperature = antenna noise temperature + Receiver noise temperature (LNA)
The parts included in the typical US mortise lock installation are the lock body (the part installed inside the mortise cut-out in the door); the lock trim (which may be selected from any number of designs of doorknobs, levers, handle sets and pulls); a strike plate (or box keep), which lines and reinforces the cavity in the door jamb or frame ...
A backdraft (North American English), backdraught (British English) [1] or smoke explosion is the abrupt burning of superheated gases in a fire caused when oxygen rapidly enters a hot, oxygen-depleted environment; for example, when a window or door to an enclosed space is opened or broken. Backdrafts are typically seen as a blast of smoke and ...
Q = stack effect draft (draught in British English) flow rate, m 3 /s A = flow area, m 2: C = discharge coefficient (usually taken to be from 0.65 to 0.70) [14] g = gravitational acceleration, 9.81 m/s 2: h = height or distance, m T i = average inside temperature, K T o = outside air temperature, K