Chapter 16 - Machine Foundation & Chimney || Get it Correct.

Chapter 16 - Machine Foundation & Chimney || Get it Correct.
Foundations are preferably built of concrete in the proportion of what measure of Portland
cement: sand : crushed stones?
A. 1:2:5
B. 2:3:5
C. 2:4:6
D. 1:2:4 correct answers D. 1:2:4


For design stability, the center of gravity of the total combined engine, driven equipment and
foundation should be kept
A. anywhere
B. above the foundation top
C. in line with surface of the foundation
D. below the foundation top correct answers D. below the foundation top


Foundation bolts of specified size should be used and surrounded by a pipe sleeve with an inside
diameter of at least
A. 3 times the diameter of the engine bolts
B. 2 times the diameter of engine bolts
C. 3 times the diameter of an anchor bolt
D. 2 times the diameter of anchor bolt correct answers C. 3 times the diameter of an anchor bolt


For foundation of stacks, the maximum pressure on the soil is equal to the pressure due to the
weight and the
A. Soil movement
B. Ground clay movement
C. Wind movement
D. Engine movement correct answers C. Wind movement

, The machine foundation must have a factor of safety of
A. 4
В. 6
C. 5
D. 7 correct answers C. 5


The diesel engine foundation safe soil bearing pressure Is__________
A. 4,890 kg/cm^2
B. 4,490 kg/cm^2
C. 4,500 kg/cm^2
D: 4,125 kg/cm^2 correct answers A. 4,890 kg/cm^2


Anchor bolts in a machine foundation should be embedded in concrete of at least how many
times of the bolt diameter?
A. 15
B. 30
C. 20
D. 25 correct answers B. 30


As a good practical rule, the foundation depth may be taken as how many times of the engine
stroke?
A. 2.2 to 3.2
B. 2.5 to 3.5
C. 3.2 to 4.2
D. 3.5 to 4.5 correct answers C. 3.2 to 4.2