MEGA EXTENDED EXAM HGE

CDD

Determine the ultimate bearing capacity based on cohesion strength in kPa.

A. 251.23

B. 124.68

C. 216.70

D. 155.67

Determine the ultimate bearing capacity based on soil overburden in kPa.

A. 201.45

B. 230.90

C. 112.54

D. 178.56

Determine the ultimate bearing capacity based on footing dimension in kPa. kPa.

A. 101.78

B. 122.03

C. 82.61

D. 92.82

CCA

SITUATION. A sample of soil 50 mm in diameter was tested in direct shear. A normal force of P was first applied to the sample, and a direct shear force V was applied. The following combinations of P and V caused the specimen to exhibit failure.

Estimate the nearest value of angle of internal friction of the soil, in degrees.

A. 25.13

B. 33.87

C. 26.57

D. 45.00

Estimate the nearest value of cohesion of the soil, in kPa.

A. 1.50

B. 3.23

C. 0

D. 1.00

What would be nearest value of P in N when V = 124 N?

A. 247

B. 492

C. 125

D. 214

B

Evaluate the resisting capacity against axial load due to skin friction of a wooden pile embedded into a layer of plastic clay in kN, given the following conditions:

Size of pile = 0.3m square

Depth of penetration into the clay layer = 10 m

Unconfined compression strength “qu” of the clay = 110 kPa

A. 550

B. 660

C. 1100

D. 1320

A

In a plate load test of sandy soil, the test plate of 60 x 60 cm undergoes a settlement of 5 mm at a pressure of 12 x 104 N/m2. What will be the expected settlement in mm of a 3m x 3m footing under the same pressure?

A. 9

B. 15

C. 20

D. 25

CCC

Evaluate the equivalent horizontal coefficient of permeability of the deposit in cm/sec.

A. 0.03860

B. 0.00257

C. 0.00129

D. 0.07720

Obtain the rate of flow per meter of the deposit, in cubic centimeters per second if the hydraulic gradient for the soil formation is 0.70.

A. 4053

B. 269.85

C. 135.45

D. 8106

Evaluate the discharge of the aquifer in m3/day

A. 0.49

B. 1.27

C. 11.7

D. 0.771

D

If the liquid limit of soil is 25%, plastic limit is 15% and flow index is 12.5%, then its toughness index is ___.

A. 50

B. 60

C. 70

D. 80

A

For a sandy soil, the ultimate bearing capacity of 30 cm plate is found to be 120 kN/m2 during plate load test. Then, the ultimate bearing capacity of a square footing 80 cm side under the same loading conditions is ______ kN/m2.

A. 320

B. 120

C. 180

D. 240

AAC

Evaluate the bearing pressure, in kPa, exerted by the footing onto the supporting soil by a 4 m. diameter circular footing that is transmitting a concentrated load of 1500 kN.

A. 119.37

B. 201.73

C. 29.28

D. 120.16

Evaluate the vertical stress, in kPa, below the center of the footing at a depth of 6 m.

A. 17.45

B. 0

C. 119.37

D. 15.95

How deep, in meters, below the footing would the pressure be reduced to 1/10 of the pressure at the base of the

footing?

A. 4.1

B. 3.2

C. 7.4

D. 5.5

ADC

Determine the rate of the flow through the aquifer in cubic meters per day.

A. 600 000

B. 150

C. 166 667

D. 20 000

Evaluate the seepage velocity in meters per day.

A. 2

B. 5

C. 40

D. 20

Estimate the time of travel, in days, from the head of the aquifer to a point 4 km downstream.

A. 160

B. 800

C. 200

D. 100

ADA

What is the rate of flow in m /day. 3

A. 5961.6

B. 5691.6

C. 5966.1

D. 6159.9

Compute the coefficient of permeability of the aquifer in m/day.

A. 60.72

B. 62.07

C. 70.26

D. 60.27

Compute the transmissibility of the aquifer in m2/day.

A. 1579

B. 1759

C. 1676

D. 1870

A

Flow index is ____________.

A. rate at which soil mass loses its shear strength with an increase in water content

B. rate at which soil mass gains its shear strength with an increase in water content

C. rate at which soil mass loses its shear strength with a decrease in water content

D. rate at which soil mass gains its shear strength with a decrease in water content

D

Proctor test is performed on the soil for

A. grain size analysis

B. assessing its shear strength

C. assessing its bearing capacity

D. assessing its degree of compaction

A

Water is pumped at a rate of 1 m /sec through the permeameter in a permeability test setup. It involves a 3 cylindrical soil sample 40 mm in diameter and height 200 mm. The hydraulic head of the test was held constant at 300 mm. In a duration of one mine the water collected in the graduate was recorded at 1.5 liters. Evaluate the coefficient of permeability of the soil sample, in cm/sec.

A. 1.33

B. 13.26

C. 8.84

D. 6.38

C

Which of the following is an intensive property?

A. Kinetic energy

B. Enthalpy

C. Density

D. Momentum

B

A gage pressure of 52.3 kPa is read on a gage. If the unit weight of the air in the atmosphere is 12 N/m3, find the absolute pressure if the elevation is 1000 m.

A. 89.33

B. 141.63

C. 37.03

D. 96.35

D

What is the volume change of 2 m3 of water due to an applied pressure of 10 MPa? Bulk modulus of water is 2100 MPa.

A. 0.0095 L

B. 0.0059 L

C. 5.9 L

D. 9.5 L

C

The unit weight of a liquid is variable and is given by the relation γ = 12 + 0.5h, where γ in kN/m3 and h is the depth of the liquid from the surface in meters. Determine the gate pressure, kPa, at a depth of 5 m.

A. 38.25

B. 72.50

C. 66.25

D. 170.83

D

A sphere of radius 500 mm is fully immersed in seawater (SG = 1.025) by anchoring it to the bottom of the seabed. The mooring line was observed to have a tension of 850 N. Evaluate the specific weight of the sphere, kN/m3.

A. 7.08

B. 7.80

C. 8.73

D. 8.43

B

A jet of water 20 mm in diameter and having a velocity of 10 m/s strikes against a plate at right angle. Determine the force at the plate when it is moving towards the jet at 5 m/s.

A. 53.1 N

B. 70.7 N

C. 7.85 N

D. 47.1 N

BCD

SITUATION. A plane area of 80 cm x 80 cm acts as an escape hatch on a submersible in the Great Lakes. It is on a 45° angle with the horizontal, with its top edge 10 m below the surface.

Determine the total hydrostatic force applied on one side of the gate, kN.

A. 56.64

B. 64.56

C. 66.34

D. 43.66

Determine the location of the hydrostatic force from the bottom on the plane of the gate, m.

A. 0.404

B. 0.504

C. 0.396

D. 0.369

If the top of the gate is hinged, determine the normal force required at the bottom just to open it, kN.

A. 31.98

B. 33.47

C. 34.37

D. 32.58

DCB

SITUATION: A concrete dam of trapezoidal cross-section has a width at the top of 1.0 m and at the bottom of 4.30 m. Dam height is 9 m, and the water level height is 6 m (on the vertical side of the dam). The weight of concrete is 24 kN/m3, and the coefficient of friction between the supporting ground and concrete is 0.50. For the given conditions, evaluate:

The resultant base reaction of the dam, kN.

A. 572.40

B. 701.04

C. 639.96

D. 599.02

The pressure at the heel, kPa.

A. -118.52

B. -126.28

C. -139.95

D. -147.65

The pressure at the toe, kPa.

A. -118.52

B. -126.28

C. -139.95

D. -147.65

CBB

A horizontal jet having a diameter of 50 mm and a velocity of 15 m/s is deflected through an angle of 60 degrees by the vane. Neglecting friction, determine the force (N) exerted by the jet on the vane, if the vane is fixed,

A. 244.86

B. 282.74

C. 441.79

D. 331.83

if the vane is moving 3.5 m/s along the horizontal.

A. 141.86

B. 259.67

C. 338.70

D. 383.70

if the vane is moving 4.5 m/s against the horizontal.

A. 534.56

B. 746.62

C. 574.32

D. 754.32

ABD

SITUATION: A rectangular channel is 6 m wide and 1 m deep, with a roughness coefficient of 0.013 and a channel slope of 0.001.

Compute the mean velocity of the canal, m/s.

A. 2.0

B. 4.0

C. 4.9

D. 94

Compute the discharge of the canal, m3/s.

A. 24.0

B. 12.0

C. 29.4

D. 564

If the most efficient rectangular section was used, what would have been the depth of the canal, m.

A. 2.16

B. 2.33

C. 1.27

D. 1.67

B

In an open tube, what is the surface shape of a mercury?

A. Curve up (U shape)

B. Curved down (Inverse U shape)

C. Horizontal

D. Vertical

C

A

If a container of water 0.80 m deep is carried inside an elevator that accelerates at 2 m/sec2, determine the pressure (kPa) exerted by the water at the base of the container if the elevator is traveling downward.

A. 6.25

B. 3.12

C. 9.45

D. 4.72

D

An iceberg having specific gravity of 0.90 floats in salt water having a specific gravity of 1.025. If the volume of the ice above the surface is 600 m3, what is the volume of the iceberg, m3?

A. 3962

B. 3692

C. 4290

D. 4920

D

A water droplet with a diameter of 0.1 mm is formed around standard atmospheric pressure. Given the surface

tension of water is 0.0728 N/m, determine the inside pressure of the droplet, kPa.

A. 2912

B. 98.4

C. 3013.3

D. 104.2

A

A tank with a volume of 0.2 m3 contains 0.5 kg of nitrogen (R = 0.2968 kJ/kg-K). The temperature is 20°C.

What is the pressure, kPa?

A. 217

B. 317

C. 127

D. 137

D

Two engineers wish to estimate the distance across a lake. One pounds two rocks together under water on one side of the lake and the other submerges his head and hears a small sound 0.62 s later, as indicated by a very accurate stopwatch. What is the distance between the two engineers? Bulk modulus of water is 2100 MPa.

A. 662 m

B. 798 m

C. 562 m

D. 898 m