MATERIALS ENGINEERING > RC 2 > Flashcards

RC 2 Flashcards

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1
Q

All piles shall be driven within an allowed variation of 20 mm per meter of pile length from the vertical batter. Piles shall be used only in places where the minimum penetration of ___ m in firm materials or ___ m in soft materials can be obtained

A. 2, 4
B. 3, 4
C. 3, 5
D. 3, 6

A

C

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2
Q

Treatment of timber shall consist of the forcing of either creosote oil or a creosote-petroleum oil mixture into the outer fibers of the timber bya heat and pressure process. The minimum penetration of the preservative with the surface of the timber shall be ___ mm

A. 10
B. 20
C. 30
D. 50

A

B

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3
Q

How long is the splicing of reinforcing steel if the splice type is tension and the grade of steel is Gr 60?

A. 20 d
B. 24 d
C. 36 d
D. 300 mm

A

C

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4
Q

Class of concrete for footings, pedestals, massive pier shafts, pipe bedding, and gravity walls, unreinforced with only a small amount of reinforcement

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

A

B

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5
Q

Class of concrete for slabs, beams, girders, columns, arch ribs, box culverts, reinforced abutments, retaining walls, and reinforced footings

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

A

A

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6
Q

Class f concrete for presetressed concrete structures and members

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

A

D

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7
Q

Water may be measured either by volume or by weight. The accuracy of measuring the water shall be within a range of error of not more than ___ %

A. 0.5
B. 1
C. 2
D. 2.5

A

B

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8
Q

Truck mixing, shall unless otherwise directed be continued for not less than 100 revolutions after all ingredients, inluding water, are in the drum. The mixing speed shall be ___ rpm

A. 2 - 4
B. 3 - 5
C. 4 - 6
D. 5 - 7

A

C

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9
Q

If lean concrete is required in the Plan or as directed by the Engr prior to placing of reinforcing steel bar, the lean concrete should have a minimum compressive strength of ___ MPa

A. 10.5
B. 12.8
C. 13
D. 13.8

A

D

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10
Q

When no bedding class is specified for pipe culverts and storm drains, the requirements for ___ bedding shall apply

A. Class A
B. Class B
C. Class C
D. None of the above

A

C

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11
Q

Test load of Class B used for locations normally trafficed by pedestrians and slow moving passenger cars or light agricultural tractors. These locations include areas accessible to infrequent slow moving heavy trucks. Typical locations include footpaths, ground level, and multistoried car parks, suburban driveways and back yards.

A. 10 kN
B. 80 kN
C. 150 kN
D. 210 kN

A

B

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12
Q

Test load of Class D used for locations trafficed by fast moving fully laden trucks and forklifts with wheel loads to 0.5T. This includes all public roads from residential to freeway

A. 10 kN
B. 80 kN
C. 150 kN
D. 210 kN

A

D

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13
Q

Class of riprap in which stones range from minimum of 30kg to a maximum of 70kg with at least 50% of the stones weighing more than 50kg

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

A

B

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14
Q

Mortar for grouted riprap shall consist of sand, cement and water mixed in the proportion of ___ cement:sand by volume, and sufficient water to obtain the required consistency

A. 1:2
B. 1:3
C. 1:4
D. 1:1.5

A

B

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15
Q

Weepholes shall be placed horizontally at the lowest points where free outlets for water can be obtained and sall be spaced at not more than __m center to center in a staggered manner

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

A

A

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16
Q

The mortar for masonry shall be composed of __ cement:aggregate by volume and sufficient water to make the mortar of such consistency that it can be handled easily and spread with a trowel

A. 1:1.5
B. 1:2
C. 1:3
D. 1:4

17
Q

What class of concrete shall be used for Item 507 Rubble Concrete

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

18
Q

The width, height, and legth of the gabion as manufactured shall not differ more than ___ from the ordered size prior to filling

A. 3
B. 5
C. 7
D. 4

19
Q

The width and length of the revet mattress as manufactured shall not differ ___ % and the height shall not differ ___ % from the ordered size prior to filling

A. 3, 5
B. 4, 5, 107
C. 6, 8
D.

20
Q

At least ___ days before work is to begin, theContractor shall submit to the Engr for freview and approval complete working drawings and design calculations describing the ground anchor system or systems intended for use

A. 7
B. 14
C. 15
D. 30

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