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John Proctor · Zinoviy Katsnelson · Brad Wilson : Home energy :
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Marilou Cheple and Pat Huelman : Home Energy :
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Joseph V. Messina, CPD : Plumbing Systems & Design :
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Patrick L.Whitworth, CPD, and Anthony W. Stutes, PE, CPS : Plumbing Systems & Design :
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Roy C. E. Ahlgren : Plumbing Systems & Design :
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be divided in the same manner on each side of this plane. 8. This area of a system of flow areas is the area that gives the same flow as the system when it is subjected to the same pressure difference over the total system of flow paths. 11. A single- system supplies pressurized air to the stairwell at one location. 14. These types of gases are used in acceptance testing of smoke control systems; however, they lack the buoyancy of hot smoke from a real fire so they do not give an accurate indication of the system performance. 15. This is the plane at the point in the building height where the difference between the building shaft pressure equals the outside pressure. 16. This type of air device in a duct can be used for either traditional smoke containment or smoke control.
Answer
ACROSS 3. This has been used extensively to manage smoke from fires in subway, railroad, and highway tunnels. 4. This can be compartmentalized into a number of sections in lieu of a multiple-injection system design. 6. This difference across barriers will affect the extent to which smoke leaks through the barriers (walls, floors, etc.) 9. Before methods of smoke control were developed, these systems were shut down when fires were discovered because the systems frequently transported smoke during fires. 10. This organization publishes Standard 555S, “Leakage Rated Dampers for Use in Smoke Control Systems.” 12. In multiple-injection stair pressurization systems which have the duct installed inside the stairwell, care must be taken that the duct does not interfere with the orderly execution of this event during a fire. 13. The transient pressures due to this effect when an elevator car moves in a shaft have been a concern with regard to elevator smoke control. 17. This type of smoke from smoke bombs is not recommended for performance testing because it normally lacks the buoyancy of hot smoke from a real building fire.
18. This type of smoke control is intended to limit smoke movement through cracks in floors and partitions from one area of a building to another. 19. This organization publishes Standard 92A, “Recommended Practice for Smoke-Control Systems.” 20. This is the normal effect that causes warm air in the building to move upward within building shafts when it is cold outside.
DOWN 1. If these forces get too high, it can make it difficult or impossible for occupants to open doors to refuge areas or escape routes during a fire. 2. It is essential for computer zone models to account for exhaust from the upper layer in order to conduct this analysis of an atrium smoke exhaust system. 5. If these paths are uniform with height, then the neutral plane of a building is near its midpoint; however, if these paths are not uniform, the location of the neutral plane can vary considerably. 6. Along with “smoke removal,” “smoke exhaust,” and “smoke extraction,” this is another term used for the dilution of smoke. 7. This method of smoke control system design requires that every floor of the building be designed such that it can
Carol Fey :
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Timothy A. Smith, CPD : Plumbing Systems & Design :
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