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UFAD systems use an underfloor supply plenum located between the structural concrete slab and a raised floor system to supply conditioned air to supply outlets (usually floor diffusers), located at or near floor level within the occupied space. Air returns from the room at ceiling level or the maximum allowable height above the occupied zone. [1]
floor and ceiling heating systems; onshore units of electrical shore connections for inland navigation vessels. 'Premises' covers the land and all facilities including buildings belonging to it. Exclusions: systems for the distribution of electricity to the public other than prosumer's installations covered by Chapter 82
Displacement ventilation is best suited for taller spaces (higher than 3 meters [10 feet]). [2] Standard mixing ventilation may be better suited for smaller spaces where air quality is not as great a concern, such as single-occupant offices, and where the room height is not tall (e.g., lower than 2.3 meters [7.5 feet]).
According to the International Residential Code 2003, an air gap length must meet the requirements of being two times the effective inner diameter of the pipe (2×D) in order to be sufficient. [2] A standard widely use in the United States is: A112.1.2 Air Gaps in Plumbing Systems (For Plumbing Fixtures and Water-Connected Receptors)
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An outlet is defined by the NEC as "a point in the wiring system at which current is taken to utilization equipment". [1] This definition includes receptacles, lighting, motors, etc. Ordinary switches control but do not consume electricity, and therefore are not defined as outlets in this sense.
A building under construction, showing the structurally independent cinderblock firewalls subdividing the building Building 4 of the Waynesboro Outlet Village, showing a concrete firewall running through the building Concrete firewalls still standing on Building 7 of the former Waynesboro Outlet Village, following a firefighter training exercise which intentionally burned the building
Electrical symbols for wiring [vague]. Electrical wiring is an electrical installation of cabling and associated devices such as switches, distribution boards, sockets, and light fittings in a structure.