Fire dampers are typically required
A) in the chimney of all residential fireplaces
B) in all residential buildings
C) in all buildings that have ductwork
D) in all commercial buildings with ductwork passing through firewalls
D
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Indicate whether this statement is true or false.
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Indicate whether the statement is true or false
Practical application: A one-lane bridge consists of a 10-in.-thick, 16-ft-wide reinforced concrete slab supported on two steel girders spaced 10 ft apart. The girders are 62-ft long and weigh 400 lb/ft. The bridge is to be designed for a uniform live load of 700 lb/ft acting over the entire length of the bridge. Determine the maximum reaction applied to an end support due to dead, live, and impact loads. The live load may be assumed to act along the centerline of the deck slab and divide equally between the two girders. Each concrete curb weighs 240 lb/ft and each rail 120 lb/ft. Stone concrete has a unit weight of 150 lb/ft 3 . Assume an impact factor of 1.33.
Technician a says that a scan tool may be required to retrieve data and diagnostic trouble codes from some antilock braking systems. Technician B says that a jumper wire can be used to retrieve diagnostic trouble codes on some antilock braking systems. Which technician is correct?
A. Technician A B. Technician B C. Both Technicians D. Neither Technician