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2. Underfloor air distribution - Wikipedia

   en.wikipedia.org/wiki/Underfloor_air_distribution

   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]

3. Plenum space - Wikipedia

   en.wikipedia.org/wiki/Plenum_space

   In all such cases, discovery, and repair of such problems to eliminate unintended plenums is difficult due to the hidden nature, limited space, and difficult access of most installed drop ceilings. For highest fire safety, it is best to assume all drop-ceiling and raised-floor airspaces are plenums, whether or not they are officially designated ...

4. Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Ceiling_fan

   Belt-driven ceiling fans. As stated earlier in this article, the first ceiling fans used a water-powered system of belts to turn the blades of fan units (which consisted of nothing more than blades mounted on a flywheel). For period-themed decor, a few companies (notably Fanimation and Woolen Mill) have created reproduction belt-drive fan systems.

5. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   In summer, ceiling fans and table/floor fans circulate air within a room for the purpose of reducing the perceived temperature by increasing evaporation of perspiration on the skin of the occupants. Because hot air rises, ceiling fans may be used to keep a room warmer in the winter by circulating the warm stratified air from the ceiling to the ...

6. First fix and second fix - Wikipedia

   en.wikipedia.org/wiki/First_fix_and_second_fix

   Second fix work requires a neater finish than first fix. The division of work is a convenient description because electricians, plumbers and carpenters will probably have to make two separate visits to one property under construction, at separate times. Project managers can report "first fix complete" or "second fix 50% done" and others can ...

7. Searchers don’t expect to find Pennsylvania woman alive in ...

   www.aol.com/searchers-don-t-expect-pennsylvania...

   The search for a woman who is believed to have fallen into a sinkhole in western Pennsylvania has become a recovery effort after two treacherous days of digging through mud and rock produced no ...

8. Mike Tomlin after George Pickens draws 2 unsportsmanlike ...

   www.aol.com/sports/george-pickens-finger-gun...

   After the penalty, Jones pulled Pickens to the side to have a word with him. The Steelers didn't pick up a first down from there. They instead gained 5 yards and settled for a field-goal attempt ...

9. NBA draft primer: Cooper Flagg, Ace Bailey, UConn, sleeper ...

   www.aol.com/sports/nba-draft-primer-cooper-flag...

   In this week’s episode of The Kevin O'Connor Show, Kevin is joined by Tate Frazier to dive deep into the biggest storylines in college basketball, with an eye on the 2024 NBA Draft. They break ...