A stair is 59 inches wide, with a handrail on one side with a centerline of 1.5 inches from the edge of the stair. The other side of the stair is a wall. For the purposes of calculating a specific flow, what is the effective width of the stair?
a. 47 in.
b. 48 in.
c. 53 in.
d. 59 in.
Solution | Posted 09/23/19
The worst expected symptoms for humans when concentration of carbon monoxide reaches 1600 parts per million is which of the following:
a. no adverse effects for up to 8 hours of exposure
b. dizziness after 45 minutes of exposure
c. nausea, headache, and dizziness after 20 minutes of exposure
d. unconsciousness and danger of death after 10-15 minutes of exposure
Solution | Posted 09/16/19
A theater has aisles serving its main seating area. One of the aisles has a stair 49 inches wide, with a wall and handrail on one side and fixed seating on the other. If the handrail has a center-line of 4 inches from the wall, what is the effective width of the stair?
a. 35.5 in.
b. 41.5 in.
c. 43 in.
d. 45 in.
Solution | Posted 09/11/19
A fire protection consultant is providing performance-based design to justify innovative architecture design and is assessing predictive behavior during exiting. Determine the visibility (in m) for a light reflecting exit sign with smoke that is produced by flaming combustion of plastic if the smoke has a mass concentration of 0.52 grams per cubic meter. Conservatively use Mulholland and Croarkin's specific light extinction coefficient.
a. 0.7 m
b. 1.3 m
c. 1.8 m
d. 3.5 m
Solution | Posted 08/20/19
If, during a fire, a total occupant load of 205 people are exiting through a building's main entry (a 7-foot double door with an effective width of 6.5 ft) and the density near the main exit door results in about 0.25 persons/sqft, the time (in minutes) it would take for all of these occupants to exit the main doors is most nearly:
a. 1.5 min
b. 1.6 min
c. 2.2 min
d. 6.3 min
Solution | Posted 08/12/19
Which of the following characteristics describe limitations which may affect survivability in a fire environment, such as metabolism, lung capacity, pulmonary disease, allergies, or other physical limitations?
Solution | Posted 08/05/19
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