Compre Part 3

In the calculation of total project duration in an infrastructure project (equipment oriented), which of the following is the most important consideration?

In order to attain the minimum percentage design strength of concrete for sides of concrete beams and girders, the minimum time before forms and supports are removed should be:

What do you call the method of determining stream discharge by measuring the cross-sectional area of the stream and its velocity with a current meter?

What is the apparatus used in determining the consistency of a liquid asphalt?

Which of the following is not a quality test for cement?

What kind of joint is required to be constructed when there is an interruption of more than 30 minutes in the concreting operations of a road pavement?

Which of the following project documents attest that the materials incorporated into the project works corresponds to the quantity accomplished and conform with specifications?

Camber on gravel roads is provided to:

To attain a uniform consistency of concrete during the pouring operation of a concrete pavement, the slump should not be more than:

Culvert flow under entrance control is synonymous with flow under:

What do you call the vertical distance from the culvert invert at the entrance to the water surface elevation permissible in the approach channel?

In the foundation design, the allowed load or bearing capacity is obtained by reducing the ultimate bearing capacity by a factor of safety of:

When considering wind or earthquake forces either acting alone or in combination with vertical loads, al allowed stresses and soil-bearing value for working stress design may be increased by:

For service load design of bridges, the flexural stress in the extreme fiber stress in compression, fc (in MPa), is:

To attain a uniform consistency of concrete during the pouring operation of a concrete pavement, the slump should not be more than:

What test determined the crushing of strength of aggregates to ensure that coarse aggregates will not degrade to smaller ones.

A one-lane road, with of 3.5 meters and shoulder width of 0.5 meter on each side of the pavement was designed to have sub-base and base coarse with a combined thickness of 300mm. If the thickness of the sub-base is 125mm, the spreading and compaction of the sub-base and base coarse shall be carried out in

Weakened joints on concrete pavement should be sawed

What depth of weakened joint should at all times not be less than

Cores are taken from a concrete pavement and tested for

In accepting completed concrete pavement poured by lane thickness determination shall come out by obtaining one core from every

. If the strength of Item 311 control specimens does not meet the requirements by not more than 25% and it is not feasible to obtain cores from the structure due to structural consideration:

The flexural strength requirements of item 311 is

The number of sets of beam test specimens that should be taken from 700 sq.m. Of concrete pavements, 0.23 cm thick poured on a single day should be:

Forms for concrete pavement shall remain in place undisturbed for not less than

The Ph value of water that is acceptable for use in concrete mix is

How many measurements are needed for thickness determination of concrete cores?

What is the single factor that determines the strength of concrete?

What is the curve formed on a maximum dry density and optimum moisture content graph?

Which of the following is accepted for concrete with fc at 28 days of 3500 psi?

In a design mix, the specific gravity of Portland cement must be

The role of application of prime coat before asphalt overlaying is

The most commonly used method in the design and evaluation of bituminous concrete mixes

Which of the following penetration grade of asphalt is used in cold climate?

If sea water is used in a concrete mix, shat will be the effect on the hardened concrete pavement?

The job mix formula contain the following provision except

Scaling of newly constructed concrete pavement is an evidence of inadequate quality control mainly due to high

The grade designation of a reinforcing steel bars is also its

Which of the following is not an engineering property of granular soils?

Which of the following is an engineering property of line grained soil?

The dividing size between coarse and fine aggregates used in asphalting is

The objective of designing the asphalt mixture is determination of

The sample of reinforcing steel bars for every 10,000 kgs shall be

The variation on tolerance of the surface from the testing edge of the straight edge in contact with the surface of asphalt pavement is

The specific irregularity tolerance for item 201 is

The depth of the weakened plane joint with a width of 6 mm is

Which of t he following is not the job for a materials engineer?

The proper way of sampling of aggregate base course in the laboratory if the the splitter is not availavle is to

Given :Original weight of sample, g 5000, Sample retained on No. 12 sieve, g 4178 What is the abrasion loss?

Which is true on conducting of a slump test?

Reinforced concrete puipe culvents are tested for compressive strength to produce _______ crack.

The bituminous materials commonly used in item 310 is

Item 310 mixture shall have an index of retained strength of not less than

Final compaction and smoothing of item 310 should be done by a

Item 310 mixture shall be delivered to the paver at a temperature not less than

In the asphalting of a two lane, 500 meter road which lasted for three days, how many core samples should be taken from the pavement if no sample was taken at the end of each days operation?

Which of the following provisions is not included in the job – mix formula?

A bituminous mix subjected to immersion – compression test yielded a dry stability of 2.0 kg and a wet stability of 1.5 kg. The index of retained strength of the mix is

In item 310, bitumen content, expressed in terms of percentage by mass of aggregate, shall be

In the asphalting of a 3 – meter wide, 200 meter long road lane, a core was obtained and tested to have a thickness of 5 cm. And a density of 2.25 gm/ cm³. The quantity of bituminous mix to be paid, in tonnes, is

After final rolling, the compacted asphalt pavement shall have a density equal top, or greater than % of the laboratory compacted density.

Scales for weighing aggregates and cement shall be accurate within % throughout the range of use. Scales shall be inspected and sealed as often as the Engineer may deem necessary to assure their continued accuracy,

When cement is placed in contact with the aggregate, batches maybe rejected unless mixed within ____ hours of such contact.

When mixed at the site or in a central mixing plant, the mixing time not be less than ____ nor more than ____unless mixer performance test prove adequate mixing of concrete in a shorter time period.

The flow of water shall be uniform and all water should be in the drum by the end of the first ____seconds of the mixing period.

Concrete not place within ____minutes from the time the ingredients were charged into the mixing drum shall not be used.

When concrete is delivered in truck mixers, additional water maybe added to the batch and additional mixing performed to increase the slump to meet the specified requirement if permitted by the Engineer, provided all these operation are performed within ____after the initial mixing operation and water and cement ratio is not exceeded.

A sample from a bituminous mix weighs 1000 grams. At extraction, it was found out that the dry aggregate weighed 950 grams, What is the % of asphalt by weight of mix?

The minimum penetration of the preservative with the surface of the timber piles shall be ____.

The contractor shall submit in writing a job-mix formula for the mixture supported by the laboratory test data along with samples of resources of components and viscosity-temperature relationship to the Engineer for testing and approval at least ____.

The concrete samples should be stored in a moist conditioned temperature within the range of ____until the time of test.

This is used in soil stabilized road surface due to its high____ property, tha is, it absorb and retain water.

The mass % wear of soil aggregate used in cement/lime proportions should not be more than ____.

The uniform rate at which the movable head of CBR machine tray is ____.

Cast in place concrete shall not be post-tensioned until at least ____ and until the compressive strength has reached the strength specified

The penetration test is an indication of the ____of asphalt.

Specification requires one (1) Quality test for every ___of asphalt.

The ___is the most commonly used method in the design and evaluation of bituminous concrete mixes.

Vibration shall operate a frequency of 8,300 to 9,600 impulses per minute under load at a maximum spacing of ___cm

The specific gravity of Sodium Sulfate used in soundness test for aggregate should be within the range of ___.

The specific gravity magnesium sulfate solution used in soundness test for aggregate should be within the range of ___.

Aggregate accounts for 92-95% of the weight of the bituminous mixture asphalt accounts for 5- 8% of the weight of the mix. The exact percentage to be used is determined by the ___.

. ___is an indication that the asphalt mix is overheated.

In checking the temperature of the mix, the thermometer should be inserted into the mix at least___.

___is applied on existing bit, or cement concrete surface with bituminous materials.

The solution used in the soundness test of aggregate shall be cooled to a temperature of 21+ of -1*C and maintain at that temperature for at least ___.

Proper compaction of the fill materials is very important, as it will ____.

In which DPWH item is emulsified asphalt not suitable?

Unconfined compressive strength test is usually performed on ____.

Consolidation test is usually performed on___samples.

A concrete core sample having a maximum height of less than ___ of its diameter before capping or height less than its diameter after capping shall not be tested.

The cohesion and internal friction of soil is tested b

In concrete acceptance, core will be considered adequate if the average strength of the cores is equal to what?

Before the cement is to be used, sampling must be done at least ___before use.

Asphalt cement shall not be used while it is foaming nor shall be heated at ___anytime after delivery.

Moisture content of aggregates in bit.mix shall not exceed ___of the time it is introduce into the mixing unit.

Batching tolerance for Sand and Aggregates is ___.

Between stage of curing, concrete shall not be exposed for more than how many hours?