Slurry walls are typically used in excavations only when _____
a. excavations are less than 25' deep
b. the excavation will be below the water table
c. an excavation is being done in Type C soils
d. they will become the structure's foundation walls
d
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Which of the following materials increases the mortar's workability?
A) Mortar joint profile B) Portland cement C) Lime D) Sand E) All of the above
A motor enclosure that minimizes the entrance of rain and airborne particles to the electrical parts is considered _____.
a. drip-proof b. dust-proof c. sealed d. weather-protected
The use of a machine to do work is called the ____
a. transformational advantage c. resistance force b. directional force d. mechanical advantage
Blue grouse inhabit western forests and forest edges, spending a lot of time in mountain conifer forests
a. True b. False Indicate whether the statement is true or false