Test 1 (E)

Question 1

A mass diagram is used in water supply computations to determine the
A. size of the area that will be flooded when a dam is built
B. capacity of a reservoir required to supply the demand for water
C. volume of excavation required to clear the site for a reservoir
D. rate of flow of water into a reservoir

Answer 1

B. capacity of a reservoir required to supply the demand for water

Question 2

ADD FROM TEST 1 (E)

Question 3

A force of 200 lbs. and a force of 300 lbs. make an angle of 30 degrees with each other. The value of the resultant force is, in lbs., Most Nearly

A. 483
B. 48
C. 493
D. 513

Answer 3

A. 483

Question 4

A chemical commonly used for coagulation in a water purification plant is

A. alum
b. caustic ash
c. potash
d. saltpeter

Answer 4

A. alum

Question 5

The consistency of a concrete mix is measured with a

a. water meter
b. viscometer
c. slump cone
d. vicat needle

Answer 5

c. slump cone

Question 6

The term 4000 pound concrete commonly means

a. one cubic yard of concrete weigh approximately 4000 pounds

b. the allowable stress in compression in the concrete is 4000 lb./sq.in.

c. the concrete has a minimum ultimate strength in compression of 4000 lb./sq.in. at 28 days

d. the concrete can carry a bond stress of 4000lb./sq.in.

Answer 6

c. the concrete has a minimum ultimate strength in compression of 4000 lb./sq.in. at 28 days

Question 7

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Question 8

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Question 9

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Question 10

The sine of 120 degrees is the same as the sine of

A. 45 degrees
B. 60 degrees
C. 45 degrees, but with a negative sign
D. 60 degrees, but with a negative sign

Answer 10

B. 60 degrees

Question 11

The formula for the area of a triangle is

A. 1/2 ab Sin A
B. 1/2 bc Sin A
C. 1/2 ac cos A
D. 1/2 ab cos A

Answer 11

B. 1/2 bc Sin A

Question 12

The logarithm of 7 is approximately 0.845. The logarithm of (0.007)^1/4 is approximately

A. 9.343-10
B. 9.567-10
C. 9.461-10
D. 9.561-10

Answer 12

C. 9.461-10

Question 13

The center of gravity of a triangle is located at the intersection of the

A. angle bisectors
B. medians
C. perpendicular bisectors of the sides
D. radians

Answer 13

B. medians

Question 14

The distance between two stations was measured size times and the average distance was found to be 346.215 ft. If one measurement of 351.205 ft. is deleted from the data as being inconsistent with the other measurements, then the average of the remaining five measurements is, in ft.,

A. 345.217
B. 345.221
345.227
345.235

Answer 14

A. 345.217

Question 15

A map of an area of 380 ft. x 740 ft. is to be plotted on a sheet of drawing paper. The smallest sheet of paper required to plot this map to a scale of 1” = 50’, leaving one inch margin all around, is, in inches,

A. 8.5 x 11
B. 10 X 17
C. 12 X 17
D. 10 X 15

Answer 15

B. 10 X 17

Question 16

On a topographic map, widely spaced contour lines indicate

A. a gentle slope
B. a steep slope
C. an overhanging cliff
D. the bank of a stream

Answer 16

A. a gentle slope

Question 17

The scale to which a map is drawn is 1” = 800’. Of the following, the most common method by which this scale would be indicated on the map is

A. 1/800
b. 1” = 9600”
C. 8.0” = 1 mile
D. 1/9600

Answer 17

D. 1/9600

Question 18

The angle formed between one line and the prolongation of the preceding line in a closed traverse is known as a(n) ____ angle.

A. split
B. obtuse
C. direction
D. deflection

Answer 18

D. deflection

Question 19

When laying out a horizontal circular curve, the deflection angle for a 100 ft. chord is equal to

A. one-quarter of the degree of curvature
B. one-half of the degree of curvature
C. three-quarters of the degree of curvature
D. the degree of curvature

Answer 19

B. one-half of the degree of curvature

Question 20

For a given intersection angle, tables of the functions of a one degree curve show the tangent distance to be 1062.0 ft. For the same intersection angle and a curvature of 4 degrees, the tangent distance is, in feet, most nearly,

A. 265.5
B. 437.9
C. 649.3
D. 1153.4

Answer 20

A. 265.5

Question 21

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Question 22

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Question 23

A simple beam on a 16’ span carries a concentrated load of 10,000 pounds. If the maximum bending moment in the beam is 465,000 inch pounds, the distance from the load to the nearer support is, in feet, most nearly,

A. 6.1
B. 6.3
C. 6.6
D. 6.9

Answer 23

C. 6.6

Question 24

The section modulus of a rectangular beam 6 inches wide and 12 inches deep is, in inches cubed,

A. 24
B. 48
C.96
D. 144

Answer 24

D. 144

Question 25

A 6" x 8" timber (actual size) is to be used as a beam on a simple span. If the 8-inch side is vertical rather than the 6-inch side, the beam is NOT A. stronger in bending B. stronger in shear C. stiffer D. more efficient

Answer 25

B. stronger in shear

Question 26

A 6" x 8" timber (actual size) is being used as a gin pole. The radius of the gyration of this column which would be used in a column formula to determine the safe load for the gin pole is, in inches, MOST NEARLY A. 1.73 B. 1.87 C. 1.93 D. 2.13

Answer 26

A. 1.73

Question 27

A steel rod 25'0" long and 1 inch square in cross-section, fastened to solid supports, is under a tension of 18,000lb./sq.in. If one of the supports yields 0.14 inches, the resultant tension in the bar will be, in pounds per square inch, MOST NEARLY (E = 30X10^6 lb./sq.in.) A. 3800 B. 4000 C. 4200 D. 4400

Answer 27

B. 4000

Question 28

A round steel bar, one inch in diameter and three feet long, is elongated 0.022 inches by a load applied at one end of the bar. The magnitude of the load is, in lbs., MOST NEARLY (E = 30 X 10^6 lb./sq.in.) A. 14,200 B. 14,400 C. 14,600 D. 14,940

Answer 28

B. 14,400

Question 29

A short hollow steel cylinder with a wall thickness of 1.5 inches is to carry a compressive load, applied uniformly on the end, of 1,750,000lb. If the allowable working stress in steel in compression is 20,000 lb./sq.in., then the minimum outside diameter of the cylinder required to safely support this load is, in inches, MOST NEARLY A. 19.4 B. 19.8 C. 20.0 D. 20.2

Answer 29

C. 20.0

Question 30

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Question 31

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Question 32

The modulus of elasticity of aluminum is one-third that of steel. This means that A. Steel is three times as strong as aluminum B. aluminum is lighter than steel C. aluminum is three times as strong as steel D. for equal stress intensities, the unit strain in aluminum is three times that in steel.

Answer 32

D. for equal stress intensities, the unit strain in aluminum is three times that in steel.

Question 33

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Question 34

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Question 35

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Question 36

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Question 37

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Question 38

A 6-inch pipe line is horizontal from point A to point B, the distance AB being 2000 feet. At A, the hydraulic gradient is 10 feet above the pipe; at B it is 2 feet below the pipe. The head lost per thousand feet is, in feet, A. 1 B. 2 C. 7 D. 6

Answer 38

D. 6

Question 39

A canal is to have a cross-sectional area of 60 square feet. If a square cross-section is used, the hydraulic radius of the canal when flowing full will be, in feet, MOST NEARLY, A. 2.41 B. 2.45 C. 2.51 D. 2.58

Answer 39

D. 2.58

Question 40

If one cubic foot of cement weighs 94 pounds and the specific gravity of the cement particles is 3.10, the void ratio (ratio volume of voids to volume of solids) is MOST NEARLY A. 0.89 B. 0.96 C. 1.03 D. 1.06

Answer 40

D. 1.06