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MATERIALS ENGINEERING > MANUAL REVIEWER 8 > Flashcards

MANUAL REVIEWER 8 Flashcards

1
Q

What is the minimum compressive strength of lean concrete?

A. 2000 psi
B. 2500 psi
C. 1000 psi
D. 1500 psi

A

A

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2
Q

Weep holes shall be spaced at not more than ___ center to center in a staggered manner and shall be at least 50mm diameter PVC or other pipe materials

A. 1m
B. 1.5m
C. 2m
D. 2.5m

A

C

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3
Q

What is the class of stone for riprap and grouted riprap if the stone weight varies between 30kg to 70kg?

Note: Also familiarize other classes of stones and weights

A. Class A
B. Class B
C. Class C
D. Class D

A

B

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4
Q

How many percent of piles are used for testing? Integrity Testing shall be conducted in at least ___ of the total number of piles

A. 25%
B. 30%
C. 40%
D. 50%

A

D

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5
Q

What is the minimum tensile strength of carbon fiber sheet in N/sq.mm?

A. 3400
B. 3500
C. 3000
D. 3800

A

A

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6
Q

What is the minimum dry compressive strength of Stone Mastic Asphalt?

A. 1.4 MPa
B. 1.5 MPa
C. 2.0 MPa
D. 1.0 MPa

A

A

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7
Q

It is used to determine the soundness of cement and useful for specific gravity determinations of hydraulic cement, sand, and other fine materials

A. Le Chatelier Flask
B. Vicat Apparatus
C. Ultrasonic Pulse Tester
D. Autoclave Machine

A

A

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8
Q

The minimum reflective brightness values of the reflective sheeting as to angle of divergence is 0.5 and the brightness of the reflective sheeting totally wet by rain shall be not less than ___ of the given values on the table

A. 90%
B. 85%
C. 75%
D. 100%

A

A

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9
Q

What is the minimum compressive strength of shotcrete?

A. 5.2 MPa
B. 13.8 MPa
C. 4.1 MPa
D. 5.0 MPa

A

A

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10
Q

During shotcrete curing, at least how many days it shall be cured uninterrupted?

A. 3 days
B. 5 days
C. 7 days
D. 10 days

A

C

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11
Q

This measures tendency of asphalt to form a flammable mixture with air and indicates safe working temperature of asphalts without catching fire

A. Ductility Test
B. Solubility
C. Spot Test
D. Flash Point

A

D

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12
Q

The amount of glass beads to be mixed with the paint shall be 500 grams per liter of paint and its index of refraction shall be within the range of ___ when tested by the liquid immersion method at 29 degrees

A. 2.5 - 2.60
B. 3.5 - 4.60
C. 0.5 - 0.6
D. 1.5 - 1.6

A

D

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13
Q

Traffic paint shall be applied to the pavement at the rate of 0.33 liter per sq.m and shall dry sufficiently to be free from cracking in from ___ minutes (drying time)

A. 45-60
B. 10-15
C. 15-30
D. 30-45

A

C

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14
Q

Which of the following is a test for traffic paints

A. Wheel and Ramp
B. Ring and Ball
C. Tag open Cup
D. Rolling Thin-Film Oven

A

A

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15
Q

Core sampling will be done at least 3 representative cores which will be considered adequate if the average strength of the cores is equal to or at least ___ and if no single core is less than ___ of the specified strength

A. 80%; 75%
B. 85%; 75%
C. 85%; 80%
D. 85%; 70%

A

B

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16
Q

The strength level of the concrete will be considered satisfactory if the averages of all sets of 3 consecutive strength test results equal or exceed the specified strength, f’c and no individual result is deficient by more than ___ of the specified strength

A. 10%
B. 15%
C. 20%
D. 25%

A

B

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17
Q

What is the class of concrete used for rubble concrete and for concrete slope protection?

A. Class A
B. Class B
C. Class C
D. Class P

A

B

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18
Q

Cement bags to be stacked in not more than ___ high or maximum of 4.5m to prevent bursting of the bags in bottom layers

A. 5 layers
B. 7 layers
C. 10 layers
D. 12 layers

A

C

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19
Q

Importance of phosphorus in rebars, except

A. Most potent ferrite strengthener after carbon
B. Increases both the yield and tensile strength of steel
C. Improves characteristic and atmospheric corrosion resistance
D. None of the above

A

D

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20
Q

It occurs when a cohesionless saturated or partially saturated soil substantially loses strength and stiffness in response to an applies stress such as shaking during an earthquake or other sudden change in stress condition, in which material that is ordinarily a solid behaves like a liquid

A. Liquefaction
B. Condensation
C. Liquifaction
D. Not A

A

A

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21
Q

Rapid curing cut-back asphalt = Asphalt cement + ____

A. Kerosene
B. Gasoline
C. Crude Oil
D. Not A

A

B

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22
Q

It consists of preparing and treating an aggregate base course

A. Item 301 Bit. Prime Coat
B. Item 302 Bit. Tack Coat
C. Item 303 Bit. Seal Coat
D. Item 304

A

A

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23
Q

Which is not an effect of Fly Ash on concrete?

A. Improve concrete workability
B. Increase concrete durability
C. Increase heat hydration
D. Leads to longer curing time

A

C

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24
Q

What is Item 714?

A. Geo-Textiles
B. Water
C. Paint
D. Admixture

A

B

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25
Q

If waterproof membrane method is used during curing, the curing membrane shall remain in place for a period of not less than ___

A. 24 hours
B. 48 hours
C. 72 hours
D. 60 hours

A

C

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26
Q

In Item 734, Stone Mastic Asphalt, the newly paved section shall be closed to vehicular traffic until such time that the temperature cools down to atmospheric temperature of ___. After attaining the required atmospheric temperature, the paved section shall be opened for vehicular traffic

A. 50 - 60 deg C
B. 60 - 70 deg C
C. 70 - 80 deg C
D. 40 - 50 deg C

A

B

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27
Q

It is the consequence of excess water evaporating while the concrete dries or occurs due to change in moisture of concrete

A. Shrinkage Cracking
B. Thermal Cracking
C. Plastic / Settling Cracking
D. Expansion Cracking

A

A

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28
Q

What will you do when the aggregate sample material such as base course passed the requirements of quality tests except for Grading?

A. Obtain another set from a different source
B. Reject the material and the source
C. Just accept the material, it’s just grading only
D. Process again the aggregate material by blending

A

D

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29
Q

Fly ash as mineral admixture can be permitted but not exceeding ___ partial replacement of Portland cement in concrete mix (Item 311 PCCP)

A. 20%
B. 30%
C. 40%
D. 50%

A

A

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30
Q

Emulsified asphalt or cutback asphalt is usually used for

A. Seal Coat
B. Tack Coat
C. Prime Coat
D. B and C

A

D

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31
Q

The workability of the asphalt mix is very dependent on the ___

A. Temperature of the asphalt mix
B. Size of the aggregates used
C. Gradation of aggregates used
D. Texture of bitumen

A

A

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32
Q

Which of the following is the most appropriate penetration grade of asphaltic material for sealing PCCP joints? No more than ___

A. 90
B. 80
C. 100
D. 75

A

A

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33
Q

What is the minimum depth of the armored stem thermometer should be inserted to determine the temperature of the delivered asphalt mix?

A. 4”
B. 5”
C. 6”
D. 3”

A

C

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34
Q

What is the height of the reflectorized thermoplastic rubble strips?

A. 10mm
B. 5mm
C. 13mm
D. 15mm

A

C

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35
Q

What is the tolerance of gabion dimension?

A. +-3%
B. +-4%
C. +-5%
D. +-6%

A

C

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36
Q

This is the minimum thickness of coco-net used as bioengineering solution

A. 10mm
B. 12mm
C. 13mm
D. 15mm

A

A

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37
Q

What is the acceptable IRI value in m/km for national primary roads? Not more than ___

A. 1mm
B. 3mm
C. 5mm
D. 10mm

A

B

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38
Q

Non-shrink grout shall be placed within ___

A. 60 min
B. 45 min
C. 30 min
D. 15 min

A

A

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39
Q

What kind of curve is formed by graphing compaction curve of the MDD and OMC?

A. Parabolic
B. Hyperbolic
C. Linear
D. Algebraic

A

A

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40
Q

When the Fineness Modulus is smaller, the ___ is the material

A. Finer
B. Plastic
C. Coarse
D. Clayey

A

A

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41
Q

What is the diameter the soil thread shall begin to break when doing the plastic limit test?

A. 1.5mm
B. 2.5mm
C. 3.2mm
D. 3.5mm

A

C

42
Q

What is the maximum percentage of abrasion loss allowed for paving course aggregate?

A. 30%
B. 40%
C. 50%
D. 60%

A

B

43
Q

How many layers should a 50cm thick aggregate base course be placed?

A. 2
B. 3
C. 4
D. 5

A

B

44
Q

What is the PI if the PL = 23 and the LL = 35

A. -12
B. +12
C. +58
D. +15

A

B

45
Q

This is the sieve size used in sieving materials discharged from the abrasion machine

A. #40
B. #30
C. #12
D. #50

A

C

46
Q

Not more than ___ of the bars may be spliced in the same cross-section, except when shown in plans

A. 1/4
B. 2/3
C. 1/3
D. 3/4

A

C

47
Q

Maximum size aggregate for structural concrete in less than ___ spacing of the bars

A. 25mm
B. 2/3 bar spacing
C. 1/3 bar spacing
D. 3/4 bar spacing

A

B

48
Q

In degree Celsius, what is the allowable temperature of the fresh concrete upon discharge?

A. Cracks
B. Segregation
C. Honeycomb
D. Fatigue

A

D

49
Q

In deg C, what is the allowable temperature of the fresh concrete upon discharge?

A. 25
B. 28
C. 30
D. 32

A

B

50
Q

How many bags of cement is needed for class B concrete per cubic meter?

A. 8.0
B. 9.0
C. 9.1
D. 9.5

A

A

51
Q

What is the concrete class used for Item 515 Mechanically Stabilized Earth (MSE) Retaining Walls

A. Class A
B. Class B
C. Class C
D. Class D

A

A

52
Q

What is the height of the Reflectorized Thermoplastic Rubble Strips?

A. 3-5 mm
B. 4-13 mm
C. 5-13 mm
D. 5-10 mm

A

B

53
Q

Compaction rolling shall begin at the sides and proceed longitudinally parallel toward the road centerline, each trip overlapping 1/2 the roller width, gradually progressing to the crown of the road. This shall continue until roller marks are eliminated and a minimum of ___ density required is attained

A. 95%
B. 97%
C. 100%
D. 90%

A

B

54
Q

This specification pertains to blended hydraulic cements for both general and special applications, using slag or pozzolan, or both, with Portland Cement or Portland cement clinker or slag with lime.

A. ASTM C595
B. ASTM C695
C. ASTM C585
D. ASTM C505

A

A

55
Q

What is the rolling speed in asphalt construction whether in the vibratory or static mode?

A. 3-5 kph
B. 4-7 kph
C. 5-8 kph
D. 6-9 kph

A

B

56
Q

This is the frequency of core sampling on a completed bituminous pavement per lane. Every ___ linear meter

A. 500
B. 1000
C. 100
D. 250

A

C

57
Q

What is the importance of adding emulsifying agent in emulsified asphalt?

A. Lessen the bad odor
B. Improve resistance to defects
C. Make water and asphalt combine
D. Improved bond between asphalt and aggregates

A

C

58
Q

What kind of test is used to measure the resistance to deformation of bituminous mixture?

A. Marshall Stability Test
B. Ductility Test
C. Extraction Test
D. Spot Test

A

A

59
Q

What is the minimum requirement for asphalt pavement thickness acceptance

A. -5mm
B. +5mm
C. +-5mm
D. -7.5mm

A

A

60
Q

What kind of test is used to determine if the asphalt is overheated during maintenance

A. Marshall Stability Test
B. Ductility Test
C. Extraction Test
D. Spot Test

A

D

61
Q

What is the other name for Asphalt cement?

A. Cutback Asphalt
B. Blown Asphalt
C. Hot Asphalt
D. Emulsified Asphalt

A

C

62
Q

Cutback Asphalts are commonly used in cold mixes or as prime applications, which of the following is not a test for cutback asphalt?

A. Float Test
B. Kinematic Viscosity
C. Flash Point
D. Water Percent

A

A

63
Q

Coconut coir fiber materials for use in fabrication of coconut geonets shall be 12 to 24 microns in diameter and the ratio of length to diameter ratio shall be

A. 15
B. 25
C. 35
D. 45

A

C

64
Q

The contractor shall conduct adhesion testing of the fully cured CFS installation using direct pull off tests at locations determined by the engineer. Failure at the bond line at tensile stress below ___ will be cause for rejection of the repaid

A. 1.373 MPa
B. 1.575 MPa
C. 1.675 MPa
D. 1.775 MPa

A

A

65
Q

Reflective pavement studs can support a vertical load of ___ during testing

A. 10 kN
B. 5 kN
C. 15 kN
D. 20 kN

A

A

66
Q

If the curing compound has not been used within ___ after the date of manufacture, the engineer may require additional testing before the use to determine compliance to requirements

A. 30 days
B. 60 days
C. 90 days
D. 120 days

A

D

67
Q

What is the widely used chemical admixture used for RMC application that gives water reducing, high range and retarded concrete?

A. Type E
B. Type G
C. Type C
D. Type D

A

B

68
Q

Sampling Item 733 - Zinc (Hot-Dip Galvanized) Coating on Iron and Steel PRoducts, for articles whose surface area is greater than ___, the average of the 3-specimen coating thickness grades comprising each test articles are the average coating thickness for that test article

A. 100,000 sq.mm
B. 200,000 sq.mm
C. 300,000 sq.mm
D. 500,00 sq.mm

A

A

69
Q

What is the minimum number of rivets and bolts for testing purposes

A. 5 pieces
B. 3 pieces
C. 6 pieces
D. 10 pieces

A

A

70
Q

About 23,500 - 4” CHB will be used in the project, how many quality tests are you going to perform?

A. 1
B. 2
C. 3
D. 5

A

C

71
Q

When timber is intended for marine use, what blend of the following shall not be used?

A. Kerosine
B. Gasoline
C. Creosote Oil
D. All of the above

A

C

72
Q

What is used in subsurface drainage, hydraulic filter, erosion control, sediment control and pavement structures as a waterproofing and stress relieving membrane

A. Geo-textile
B. Geofoam
C. Coco Net
D. Coco Fiber

A

A

73
Q

What do you call the selection by standard method of a representative portion of a material for the purpose of ascertaining its characteristics?

A. Experimenting
B. Selecting
C. Sampling
D. Representing

A

C

74
Q

Consolidation Test is performed on what type of soil sample?

A. Consolidated
B. Plastic
C. Disturbed
D. Undisturbed

A

D

75
Q

What is the maximum compacted thickness per layer for aggregate subbase and base courses

A. 150mm
B. 100mm
C. 200mm
D. 250mm

A

C

76
Q

For pipe culverts, the width of excavation shall be at least ___ greater than the horizontal diameter of the pipe

A. 200mm
B. 300mm
C. 400mm
D. 500mm

A

B

77
Q

In Item 701, clearing shall extend ___ beyond the toe of the fill slopes or beyond the rounding of cut slopes at the case maybe for the entire length of the project.

A. 1m
B. 2m
C. 3m
D. 4m

A

A

78
Q

Base and subbase courses shall be compacted with an extension of ___ on each side thus the carriageway will be ___ greater than the design width

A. 0.25m & 0.5m
B. 0.4m & 0.8m
C. 0.5 & 1m
D. 0.75m & 1.5m

A

C

79
Q

A 3.5m width single lane pavement has a shoulder width of 2.5m on each side. The combined thickness of subbase and base course shall be 425mm. How many layers of compaction of the subbase and base courses must be carried out if the thickness of the subbase is 225mm?

A. 2 layers over full width of 4.5m
B. 2 layers over full width of 3.5m
C. 3 layers over full width of 4.5m
D. 3 layers over full width of 3.5m

A

C

80
Q

What is the compressive strength of the 6” diameter cylinder sample if it fails 90,100 lb

A. 3,190 psi
B. 3,090 psi
C. 3,290 psi
D. 3,490 psi

A

A

81
Q

How many sets of field density tests are required per layer of a 1,500 sq.m of base course

A. 2
B. 3
C. 4
D. 5

A

B

82
Q

What is the fineness modulus of fine aggregates if the summation of the percent retained from the sieve size 3/8” to sieve no. 100 is 287% and passing percentage on sieve no. 200 is only 3%

A. 2.87
B. 2.90
C. 2.84
D. None of the above

A

A

83
Q

What is the weight of 3 meters of 16mm diameter in kilogram

A. 4.75kg
B. 5.75kg
C. 3.00kg
D. 3.75kg

A

A

84
Q

What is the grade of the rebars if the color code is green

A. Grade 230
B. Grade 275
C. Grade 415
D. All of the above

A

C

85
Q

If there are 250 pieces of reinforced pipe culverts, how many samples shall be taken for testing

A. 4
B. 5
C. 6
D. 7

A

B

86
Q

How many quality tests are required for aggregate base course of 45,250 cu.m

A. 30
B. 31
C. 46
D. 23

A

B

87
Q

As ME, where can you obtain the permit for the procurement of the chemicals to be used for laboratory testing such as sodium hexametaphosphate

A. DOST
B. PDEA
C. BFAD
D. BFAR

A

B

88
Q

As contractor’s ME handling DPWH projects, are you allowed and authorized to perform testing on DOST testing laboratories

A. Yes
B. No
C. Sometimes
D. Depends

A

B

89
Q

The following are the type of water stops, except one

A. Copper
B. Rubber
C. PVC
D. Plastic

A

C

90
Q

What class of concrete to be deposited water

A. Class A
B. Class B
C. Class Seal
D. Class P

A

C

91
Q

Conducting California Bearing Ratio (CBR) is forcing the plunger into the sample to depth of ___

A. 2mm
B. 1mm
C. 1.5mm
D. 2.5mm

A

D

92
Q

What is the height of drop of AASHTO T-180 (Modified Proctor Test)

A. 12”
B. 14”
C. 16”
D. 18”

A

D

93
Q

How many quality tests are required for each type of paint if in a certain project, it requires 325 gallons of paint, and which 180 gallons are latex paint, and the rest are enamel paint

A. 2 QT
B. 3 QT
C. 4 QT
D. 1 QT

A

A

94
Q

Item 1000: Termite Control Work, there are 2 - methods usually adopted in soil poisoning, but which method is used or adopted when there is no visible evidence of termite infestation

A. Drenching
B. Cordoning
C. Waterlogging
D. Dousing

A

B

95
Q

When soil show termite infestation, this method shall be applied with working solution at the rate of ___ per square meter

A. 20L
B. 24L
C. 28L
D. 30L

A

B

96
Q

Flood Control: Item 1704 Embankment. Which of the following is considered suitable material?

A. Peat and muck
B. Soils with water content exceeding 100%
C. Soil with density of 800 kg/cu.m or lower
D. Soils with liquid limit of 75 and plasticity index of 50

A

D

97
Q

Item 1013: Corrugated Roofing. All Corrugated asphalt roofing materials shall be delivered at the jobsite with labels affixed indicating the quality, make type and thickness. Each roof in position shall withstand up to ___ of wind pressure

A. 100kph
B. 200kph
C. 300kph
D. 250kph

A

B

98
Q

Flood Control: Item 1714: Gabions and Mattresses, the width. height, and length of gabion as manufactured shall not differ by more than ___ from the ordered size prior to filing

A. +-5%
B. +-10%
C. +-15%
D. +-3%

A

A

99
Q

It is high technology equipment containing radioactive source that can read in-place density or moisture content

A. Nuclear Density Gauge
B. Seismic Density Gauge
C. Dynamic Density Gauge
D. Kinetic Density Gauge

A

A

100
Q

It is large metal hopper and pipe used to distribute freshly mixed concrete over an underwater site

A. Pneumatic Caissons
B. Tremie
C. Concrete Hopper
D. Immersed Tube Tunnels

A

B

MATERIALS ENGINEERING (10 decks)

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