The density of air at standard room conditions is 1.2 kg/m3. Express the density in BG and U.S. Customary units. Show the conversion steps.
What will be an ideal response?
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Which of the following views includes facing materials of exterior walls?
a. elevation views b. plan views c. sectional views d. none of the above
An elevated expressway goes through an urban area, and crosses a local street as shown in Figure 3.9. The partial cloverleaf exit ramp is on a 2% downgrade and all vehicles leaving the expressway must stop at the intersection with the local street. Determine (a) minimum ramp radius and (b) length of the ramp for the following conditions below:
Maximum speed on expressway = 60 mi/h Distance between exit sign and exit ramp = 260 ft Letter height of road sign = 3” Perception-reaction time = 2.5 sec Maximum superelevation = 0.08 Expressway grade = 0% Assume that a driver can read a road sign within his or her area of vision at a distance of 50 ft for each inch of letter height, and the driver sees the stop sign immediately on entering the ramp. What will be an ideal response?
Conduit/cable system seals minimize the passage of ____ and prevent the passage of flames from one portion of the electrical installation to another through the conduit.
A. sparks B. water C. electrical flow D. gas/vapors
Technician A says that metal gasoline containers should be filled to the top in order to prevent excessive fumes. Technician B says that all gasoline containers should be red in color. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician