In expansive soils, drilled piers are subjected to
A) a downward force in the expansive region of the soil, which generally occurs well below the ground surface.
B) an uplift force in the expansive region of the soil, which generally occurs in the upper soil layer.
C) an uplift force in the expansive region of the soil, which generally occurs well below the ground surface.
D) any one of the above, depending on the local geology.
E) none of the above.
B) an uplift force in the expansive region of the soil, which generally occurs in the upper soil layer.
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What does the environmental control training that process technicians receive ensure?
A. It ensures worker safety. B. It ensures limited fines. C. It ensures permits are followed explicitly. D. All of the above
Most electronic thermostats maintain their programming when the batteries are removed using a built-in _____.
a. diode b. resistor c. light cell d. capacitor
You bought the field shown in Figure 5-1 for $4,860 per acre. (Note: 1 acre = 10 ch2.) (Note:Use a scale drawing.)
a. How many acres are in the field?
b. What did the land cost?
Centrum Water & Gas provides standby power to pumping stations using diesel-powered generators. An alternative is the use of natural gas to power the generators, but it will be a few years before the gas is available at remote sites. Centrum estimates that by switching to gas, it will save $15,000 per year, starting 3 years from now through the end of year 20. At an interest rate of 8% per year, determine the present worth of the projected savings.
What will be an ideal response?