EERC REFRESHER 4

For mesh system (active), the anchorages using

anchor bolt/soil nail shall be installed as per

construction drawings, with a minimum grid spacing

of _____.

a. 1 m x 1 m

b. 2 m x 2 m

c. 2.5 m x 2.5 m

d. 3 m x 3 m

B

The number of anchor bolts/soil nails to be tested

for Conformity Pull Test in Active and Passive

Protection Systems for Unstable Slope, shall

normally be_____

a. 2

b. 5

c. 3

d. 4

C

Materials Engineer 1 (ME-1) may be assigned for the

following projects, except:

a. 1 Project costing not more than P150 million

b. 2 Projects with an aggregate cost of not more

than P250 million

c. 3 Projects with an aggregate cost of not more

than P300 million

d. None of the above

C

This is the sudden halt of the load-indicating pointer

and the corresponding stress during testing of

reinforcing steel bars

a. Fracture Point

b. Yield Point

c. Strain

d. Ultimate Strength

B

Test to determine freshness of cement

a. Loss on Ignition

b. Insoluble Residue

c. Sulfur Trioxide

d. None of the above

A

In shotcrete construction, sample should be taken

approximately every ______ when continuous

mixing is used.

a. 10 cu.m.

b. 12.5 cu,m,

c. 7.5 cu.m,

d. 5 cu.m.

C

Allowable type of cement other than Type 1 for

general construction works

a. Type P

b. Type 1P

c. Type 1L

d. Type 1S

B

For erosion control mats (Item 512), what is the

maximum allowed moisture content?

a. 10%

b. 20%

c. 25%

d. None of the above

B

Gravity Hammers shall not weigh less than 60% of

the combined weight of the pile and driving head

but not less than ______

a. 1,500 kg

b. 1,000 kg

c. 2,500 kg

d. 2,000 kg

D

Which of the following is not included in the

determination of moisture content of soil?

a. Oven with temperature control

b. Can

c. Weighing scale

d. Extruder

D

Calibration of laboratory and field testing equipment shall be conducted in the following

except:

a. Periodically

b. As per Manufacturer’s operating instructions

c. After occurrence of any mechanical or electrical shock that might have affected the equipment

d. If convenient

D

What is the characteristic of the soil in A-3 group

classification according to AASHTO Soil Classification

System?

a. Fine Sand

b. Coarse Sand

c. Silt

d. Clay

A

The setting of concrete, but when mixed returns to

its plastic or workable condition without adding

water.

a. False Set

b. Flash set

c. Premature set

d. Either a or b

A

Laboratory apparatus used to determine the specific

gravity of cutback asphalt

a. Le chatelier

b. Cleveland Open Cup Apparatus

c. Glass Pycnometer

d. Los Angeles Abrasion Machine

C

The asphalt pavement represented by the cores

shall be not accepted if the deficiency in density is

more than _____.

a. 0.5%

b. 1%

c. 1.5%

d. 2%

D

The brightness of the reflective sheeting totally wet

by rain, shall be not less than ______ of the

minimum reflective brightness value of the

reflective sheeting compared to a magnesium oxide

(MgO)

a. 70%

b. 75%

c. 85%

d. 90%

D

What is the proper way of transporting

core/concrete samples to the laboratory for testing

a. Samples are in crate with saw dust and

rice straw or even sand the least

b. Samples are in crate, immovable

c. Samples are placed in sack

d. None of these

D

When storing cement, for a storage period of less

than 60 days, stack the bags no higher than ______

a. 7 Layers

b. 10 Layers

c. 12 Layers

d. 14 Layers

D

When storing cement, for a longer storage period of

more than 60 days, stack the bags no higher than

______

a. 7 Layers

b. 10 Layers

c. 12 Layers

d. 14 Layers

A

What is the recommended length of road section

where Reflectorized Rumble Strips are to be

installed?

a. 10 – 20m

b. 20 – 30m

c. 15 – 25m

d. 15 – 30m

B

The index of retained strength of the compacted bituminous

mixtures is the ratio of the compressive strength of

immersed and dry bituminous mixture. What is the

minimum index of retained strength required for

bituminous mixtures?

a. 40%

b. 50%

c. 60%

d. 70%

D

Bituminous Concrete Mixes contain asphalt by

weight of equivalent to ____?

a. 3 – 12%

b. 4 – 7%

c. 5 – 8%

d. 8 – 13%

C

The rock asphalt shall contain between _______ of

Bitumen.

a. 3 – 12%

b. 4 – 7%

c. 5 – 8%

d. 8 – 13%

D

What is the maximum height of fall of concrete mix

or height of the chute?

a. 0.5m

b. 1.0m

c. 1.5m

d. 2.5m

C

What is the required lap length of splices of rebars

when the splice type is compression and the

reinforcement is Grade 40?

a. 20 x rebar diameter

b. 24 x rebar diameter

c. 36 x rebar diameter

d. 40 x rebar diameter

A

What is the required lap length of splices of rebars

when the splice type is tension and the

reinforcement is Grade 60?

a. 20 x rebar diameter

b. 24 x rebar diameter

c. 36 x rebar diameter

d. 40 x rebar diameter

C

What is the minimum required lap length of rebar

splices?

a. 100mm

b. 150mm

c. 200mm

d. 300mm

D

What is the color code for Grade 60 Reinforcing

Steel Bars?

a. White

b. Yellow

c. Green

d. None

C

What is the color code for Weldable Grade 40

Reinforcing Steel Bars?

a. Red

b. Green+Red

c. Yellow+Red

d. Silver

C

What is the maximum phosphorus content of

reinforcing steel bars?

a. 0.06%

b. 6.0%

c. 0.60%

d. 60.0%

A

What is the weight of each spheres of Los Angeles

Abrasion Machine?

a. 309 – 465g

b. 309 – 455g

c. 390 – 445g

d. 390 – 455g

C

What is the speed of the Los Angeles Abrasion

Machine during Abrasion Test?

a. 30 – 31 rpm

b. 30 – 32 rpm

c. 30 – 33 rpm

d. 31 – 33 rpm

C

How many spheres are used during Abrasion Test –

Grading B at 500 revolutions?

a. 12

b. 11

c. 8

d. 6

B

A Cutback Asphalt which is a combination of asphalt

cement and kerosene.

a. Slow Curing Cutback Asphalt

b. Medium Curing Cutback Asphalt

c. Rapid Cutback Asphalt

d. None of the above

B

What is the dividing coarse between fine and coarse

aggregate for bituminous mixture or composite

aggregates?

a. Sieve No. 10

b. Sieve No. 4

c. Sieve No. 8

d. Sieve No. 200

C

If the coefficient of friction of the concrete is found

to be 0.3, what will you do as materials engineer?

a. Accept

b. Reject

c. Adjust Price

d. None

A

The minimum length of test specimen required for

the conduct of Tension Test on steel bars is

a. 0.5 m

b. 0.7 m

c. 1.0 m

d. None of the above

C

What is the rolling speed in asphalt construction

whether in the vibratory or static mode?

a. 3 – 5 km/hr

b. 4 – 7 km/hr

c. 5 – 8 km/hr

d. 6 – 9 km/hr

C

Test results from specimen taken from a recently rolled

ashalt pavement showed that its total asphalt content is

5.45% by weight of mix. If the asphalt absorbed by the

aggregates is 0.95%, the effective asphalt content by weight

of mix:

a. 4.80%

b. 4.55%

c. 5.10%

d. 5.50%

B

At least _________ prior to construction, the Contractor

shall submit in writing a Job-Mix Formula (JMF) for each

mixture supported by laboratory test data along with

samples and sources of the components and viscosity-

temperature relationships information to the Engineer for

testing and approval.

a. one week

b. two weeks

c. three weeks

d. four weeks

C

Cellulose fibers are usually added in Stone Mastic

Asphalt Mixture in the amount of ________by

weight or 3.3 to 4.5 kgs per metric tons if bitumen

coated.

a. 0.30 to 0.40

b. 0.33 to 0.45

c. 0.35 to 0.45

d. 0.50 to 1.00

B

Mineral fillers used in bituminous mixes shall

have a plastic index. (ITEM 703A)

a. not less than 4

b. not greater than 4

c. equal or greater than 4

d. None of the above

B

Test for Soil Nail

a. Pull-up Test

b. Pull-out Test

c. Pull-off Test

d. None of the above

B

The application temperature of emulsified

asphalt ranges from ___.

a. 10 to 71°C

b. 15 to 60°C

c. 20 to 59°C

d. 60 to 107°C

A

The minimum penetration of the preservative into

the surface of the timber shall be _____.

a. 10 mm

b. 20 mm

c. 25 mm

d. 30 mm

B

The preservatives used for timber is:

a. creosote oil

b. resin

c. maltene

d. None of the above

A

The depth of the weakened joint should at all

times not be less than ____, while the width

should not be more than ____.

a. 25 mm, 4 mm

b. 50 mm, 6 mm

c. 60 mm, 8 mm

d. 90 mm, 8 mm

B

In slump test, concrete shall be placed in the mold

in three layers, the depth of the 1st layer is

approximately ____________.

a. 70 mm

b. 80 mm

c. 90 mm

d. 100 mm

A

An asphalt mix prepared in the laboratory used 30%, 50%, 20% by

weight of coarse aggregate (CA), fine aggregate (FA), and mineral filler

(MF), respectively. If the specific gravity of CA, FA, and MF are 2.50,

2.65, 2.50, respectively, the overall specific gravity of composite

aggregate is:

a. 2.57

b. 2.58

c. 2.66

d. 2.77

A

If the 95% of the aggregates is mixed with 5% asphalt by weight of

mix, the specific gravity of the asphalt is 1.01 and the specific gravity

of the aggregate is 2.58. Compute the specific gravity of the mix.

(consider it is voidless)

a. 2.18

b. 2.23

c. 2.39

d. 2.50

C

What is the diameter that the soil thread shall begin to

break when doing the plastic limit test?

a. 1.5 mm

b. 2.5 mm

c. 3.2 mm

d. 3.5 mm

C

What is the maximum percentage of abrasion loss

allowed for paving coarse aggregate?

a. 30%

b. 40%

c. 50%

d. 60%

B

How many layers should a 50 – cm thick aggregate

base course be placed?

a. 2

b. 3

c. 4

d. 5

B

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

a. -12

b. +12

c. +58

d. +15

B

This is the sieve size used in sieving materials discharged

from the abrasion machine.

a. #40

b. #30

c. #12

d. #50

C

Not more than ___ of the bars maybe spliced in the

same cross – section, except when shown in the

plans.

a. ¼

b. 2/3

c. 1/3

d. ¾

C

Maximum Size Aggregate for structural concrete is less

than ______ spacing of the bars.

a. 25mm

b. 2/3 bar spacing

c. 1/3 bar spacing

d. ¾ bar spacing

B

In degree Celsius, what is the allowable temperature

of the fresh concrete upon discharge?

a. 25

b. 28

c. 30

d. 32

D

This is the result when there is wrong deposit or

conveyance of concrete.

a. Cracks

b. Segregation

c. Honeycomb

d. Fatigue

B

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

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 the Aggregates used.

d. Texture of the bitumen.

A

What is the rate of application for Bituminous Tack

Coat?

a. 1 – 2 L/sq.m.

b. 0.2 – 0.7 L/sq.m.

c. 0.9 – 1.8 L/sq.m.

d. 1.5 – 3.0 L/sq.m.

B

What is the minimum depth of the armored stem

thermometer that should be inserted to determine the

temperature of the delivered asphalt mix?

a. 4 inches

b. 5 inches

c. 6 inches

d. 7 inches

C

What is the (maximum) height of the reflectorized

thermoplastic rumble strips?

a. 10mm

b. 5mm

c. 13mm

d. 15mm

C

What is the tolerance of gabion dimension?

a. +-3%

b. +-4%

c. +-5%

d. +-6%

C

This is the minimum thickness of coco-net used as

bioengineering solution.

a. 10mm

b. 12mm

c. 13mm

d. 15mm

A

What is the acceptable IRI Value in m/km for

national primary roads? (Not more than)

a. 1

b. 3

c. 5

d. 10

B

Non – Shrink grout shall be placed within ___.

a. 60 Minutes

b. 45 Minutes

c. 30 Minutes

d. 15 Minutes

A

What kind of curve is formed by graphing

compaction curve of the MDD and OMC?

a. Parabolic

b. Hyperbolic

c. Linear

d. Algebraic

A

When the Fineness Modulus is smaller, the _____ is

the material.

a. Finer

b. Plastic

c. Coarse

d. Clayey

A

Asphalt Emulsion Mixes are also known as

a. Hot Mix Asphalt

b. Warm Mix Asphalt

c. Cold Mix Asphalt

d. None of the above

C

If there are 125 pieces of reinforced pipe culverts, how many

samples shall be taken for testing?

a. 1

b. 2

c. 3

d. None of the above

C

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.

C

What is Item 714?

a. Geo-Textiles

b. Water

c. Paint

d. Admixture

B

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

C

Test for Carbon Fiber Sheet/Plate

a. Pull-up Test

b. Pull-out Test

c. Pull-off Test

d. None of the above

C

The type of Emulsified Asphalt where asphalt globules are

positively charged and is used effectively for cold climate

a. Anionic

b. Cationic

c. Non-ionic

d. None of the above

B

What will you do when the aggregate sample material

such as base course passed the requirement 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

D

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

Emulsified asphalt or cutback asphalt is usually used

for:

a. Seal Coat

b. Tack Coat

c. Prime Coat

d. B and C

B

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

D

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 – 4.6

c. 0.50 – 0.60

d. 1.50 – 1.60

D

Traffic paint shall be applied to the pavement at the

rate of 0.33 Liter per sqm 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

C

When the top surface of a concrete specimen is rough

and not truly plane, stress concentrations are

introduced and the strength of the concrete is

reduced by about.

a. ½

b. 1/3

c. ¼

d. 1/5

B

Core Sampling will be done at least 3 representative cores

in equal to or at least ___ and if no single core is less than

____ of the specified strength.

a. 80% and 75%

b. 85% and 75%

c. 85% and 80%

d. 85% and 70%

B

The strength level of the concrete will be considered satisfactory if the

averages of all set 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%

B

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

B

In the application of the Job-Mix Formula, the

allowable tolerance for the temperature of the mix

is?

a. ±5.0°C

b. ±8.0°C

c. ±10°C

d. ±12°C

C

In the application of the Job-Mix Formula, the

allowable tolerance for aggregates passing sieve no.

200 is?

a. ±2.0%

b. ±4.0%

c. ±7.0%

d. None of the above

A

Sinking of the ground because of underground material movement.

This is most often caused by the removal of water, oil, natural gas,

or mineral resources out of the ground by pumping, fracking, or

mining activities.

a. Settlement

b. Liquefaction

c. Subsidence

d. Gully Erosion

C

Volumetric measurement for concrete mixtures may be authorized

for small project requiring less than ______ of concrete per day of

pouring.

a. 50 cu.m.

b. 75 cu.m.

c. 100 cu.m.

d. 150 cu.m.

B

Weep holes shall be spaced at not more than___

center to center in a staggered manner and shall be

at least 50 – mm diameter PVC or other pipe

materials.

a. 1.0 meter

b. 1.5 meters

c. 2.0 meters

d. 2.5 meters

C

What is the class of stone for riprap and grouted

riprap if the stone weight varies between 30 kg to

70 kg?

a. Class A

b. Class B

c. Class C

d. Class D

B

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%

D

Number of measurements for thickness

determination of Asphalt Core

a. 4

b. 6

c. 9

d. None of the

above

A

Number of measurements for thickness

determination of Concrete Core

a. 4

b. 6

c. 9

d. None of the

above

C

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

Laboratory report revealed that the asphalt cement

used in the asphalt mix was more than what was

required by the job mix. Which of the following will

most likely occur?

a. Slippage cracking

b. Shoving

c. Raveling

d. Upheaval

B

The phenomenon wherein the soil subgrade losses

strength due to ground shaking and the presence of fine

grained cohesionless soil

a. Settlement

b. Liquefaction

c. Subsidence

d. Hydraulic Compaction

B

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

C