MANUAL REVIEWER COMBI 2 Flashcards by Alecz Katherine Lazo

Native granular material may be used for pipe bedding for rigid pipes, provided the native granular material has a maximum dimension of ___

A. 100 mm
B. 38 mm
C. 50 mm
D. 75 mm

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Rocks having dimensions larger than ___ shall not be allowed to be used as backfill/fill materials

A. 150 mm
B. 120 mm
C. 125 mm
D. 100 mm

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For rockworks, what is the thickness of concrete grout to fill the crevices on the inside slope of the rocks?

A. 150 mm
B. 120 mm
C. 125 mm
D. 100 mm

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For sand mattresses, an allowance of about ___ for possible settlement of the mattress has been assumed in the Plans

A. 0.50 m
B. 0.60 m
C. 0.75 m
D. 0.25 m

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What is the minimum angle of internal friction in place of the sand mattresses when dredged from non-cohesive material?

A. 20 deg
B. 21 deg
C. 22 deg
D. 23 deg

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Concrete pouring of structural slab must have at least 20.7 MPa compressive strength at 28 days, what is the minimum thickness?

A. 100 mm
B. 38 mm
C. 50 mm
D. 75 mm

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Concrete pouring of structural slab must have at least 20.7 MPa compressive strength at 28 days, what is the maximum thickness?

A. 100 mm
B. 38 mm
C. 50 mm
D. 75 mm

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Precast prestressed concrete floor joists delivered on site are installed manually or using hoisting equipment. What is the minimum seating clearance of the joist laid on concrete beams?

A. 100 mm
B. 35 mm
C. 50 mm
D. 75 mm

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Precast prestressed concrete floor joists delivered on site are installed manually or using hoisting equipment. What is the minimum seating clearance of the joist if laid on steel I-beams?

A. 100 mm
B. 38 mm
C. 50 mm
D. 75 mm

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What is the class of concrete filler for rocks bulkheads when required for the purpose of preventing the escape of fill material?

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

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Concrete filler for rocks bulkheads when required for the purpose of preventing the escape of fill material. shall be Class ___ concrete plus ___ additional cement conforming to the requirements given under Item 900, Structural Concrete for the class given

A. Class A, 10%
B. Class B, 10%
C. Class B, 5%
D. Class C, 5%

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Rocks shall not be out of line on the faces of the bulkheads by more than ___

A. 100 mm
B. 150 mm
C. 50 mm
D. 75 mm

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In excavation for water supply system, which workers may be required to enter, excavated or other materials shall be stockpiled temporarily at least ___ m from the edge of the trench.

A. 600 mm
B. 650 mm
C. 500 mm
D. 750 mm

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For Pipeline Trench Excavation, what is maximum amount of open trench permitted at any time and in one location?

A. 100 m
B. 50 m
C. 25 m
D. 75 m

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For Pipeline Trench Excavation, the bottom of the trench, including any shoring, shall have a minimum width equal to the outside diameter of the pipe plus ___

A. 300 mm
B. 600 mm
C. 500 mm
D. 750 mm

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For Pipeline Trench Excavation, the bottom of the trench, including any shoring, shall have a maximum width equal to the outside diameter of the pipe plus ___

A. 300 mm
B. 600 mm
C. 500 mm
D. 750 mm

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Backfill materials shall be laid in horizontal layers, what is its maximum thickness?

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

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Backfill materials shall be laid in horizontal layers, what is its maximum compacted density and so be carried to the level of the surrounding ground?

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

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When curing concrete by waterproof membrane method, what is the minimum period the curing membrane shall remain in place?

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

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

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

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Curing compound shall be applied with a pressure spray shall be of such character that it will harden ___ after application

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

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What is the pipe lining thickness tolerance?

A. +-25%
B. +-35%
C. +-20%
D. +-30%

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What is the minimum pipe coating thickness as per Item 1602 Pipeline System?

A. 15 mm
B. 20 mm
C. 23 mm
D. 25 mm

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All polyethylene pipes shall be rated for use with water at 23 deg C and at a minimum working pressure of ___

A. 2.0 MPa
B. 1.5 MPa
C. 1.1 MPa
D. 1.2 MPa

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Water Treatment Plant shall include any of the following treatment, except A. Thickening B. Mechanical Dewatering C. Non-Mechanical Dewatering D. Non-Thermal Treatment

Which of the following is not a type of Valve used for water supply system? A. Gate B. Globe C. Butterfly D. Elephant

What is the maximum Plasticity Index of fill and backfill material? A. 6 B. 12 C. 25 D. 30

What is the maximum liquid limit of fill and backfill material? A. 6 B. 12 C. 25 D. 30

The Contractor shall provide within ___ upon issuance of the Notice to Proceed, the vehicles listed in the Contract for the exclusive use of the DPWH Engineer A. 30 CD B. 45 CD C. 60 CD D. 90 CD

What is the minimum roadway lane width when accommodating traffic during work? A. 2.1 m B. 2.5 m C. 3.1 m D. 3.0 m

For cuts, borings should extend a minimum of ___ below the anticipated depth if the cut at the ditch line A. 5.0 m B. 2.5 m C. 3.0 m D. 1.5 m

For piles bearing on rock, a minimum of ___ rock core shall be obtained at each exploration point location to verify that the boring has not terminated on a boulder A. 5.0 m B. 2.5 m C. 3.0 m D. 1.5 m

During Soil Penetration Test, the last number of blows to drive the last ___ represents the N-value. A. 300 mm B. 660 mm C. 500 mm D. 750 mm

During Soil Penetration Test, the sampler is driven into the ground using a 63.6 kg hammer falling freely from a height of ___ A. 300 mm B. 660 mm C. 500 mm D. 750 mm

What class of concrete shall be used if concrete post is used as temporary fence? A. A B. B C. C D. D

Curb cut-out should only be allowed when is swill not obstruct a walkway and shall have a minimum width of ___ A. 900 mm B. 1000 mm C. 1200 mm D. 750 mm

What is the minimum diameter of button sizes at elevator control panels? A. 15 mm B. 20 mm C. 22 mm D. 25 mm

What is the signage shape for men's washroom and toilet doors? A. square B. triangle C. circle D. rectangle

What is the signage shape for women's washroom and toilet doors? A. square B. triangle C. circle D. rectangle

Transplanting shall be the obligation of the permittee and if it does not survive after ___, the permittee shall replace preferable indigenous tree species at a ratio of 1:100 as prescribed under DENR Memorandum Circular 2012-02 A. 6 months B. 12 months C. 9 months D. 3 months

Which of the following Liquid Limit of the embankment material is considered unsuitable? A. 80 B. 81 C. 56 D. 31

Which of the following Plasticity Index of the embankment material is considered unsuitable? A. 80 B. 81 C. 56 D. 31

Soil poisoning shall be done by trained personnel with a minimum of ___ years experience for proper execution of the work A. 1 year B. 2 years C. 3 years D. 5 years

Toxicant for soil poisoning shall be applied at least ___ prior to placement of concrete which shall be in contact with treated materials A. 12 hrs B. 6 hrs C. 24 hrs D. 48 hrs

Upon completion and acceptance of the soil poisoning work, the contractor shall furnish a written guarantee stating that termite control is guaranteed for a minimum period of ___ years A. 1 B. 2 C. 3 D. 5

Under storm drainage and sewerage system, what is minimum wall thickness of a steel septic tank? A. 2.77 mm B. 3.77 mm C. 4.77 mm D. 5.77 mm

When installing pipes for drainage and sewerage systems, what is the minimum bedding thickness? A. 1/2 of pipe's diameter B. 1/4 of pipe's diameter C. 1/3of pipe's diameter D. 1/5of pipe's diameter

What is the minimum number of compartments for septic tank? A. 1 B. 2 C. 3 D. 4

Water supply pipes shall be galvanized iron pipe schedule ___ A. 100 B. 20 C. 80 D. 40

When conducting a water test on the plumbing system, the water shall be kept in pipe system or in the portion under test, for at least ___ before inspection starts A. 30 mins B. 15 mins C. 20 mins D. 45 mins

When conducting drainage System test, the system shall hold the water for a full ___ during which time there shall be no drop greater than 102 mm A. 30 minutes B. 15 minutes C. 20 minutes D. 45 minutes

Powder Termiticide shall not be used if rain is expected to occur within ___ of application A. 12 hrs B. 6 hrs C. 24 hrs D. 48 hrs

For low penetration and sloping sites. how deep is the surface to be sacrificed before applying toxicants? A. 25 mm B. 50 mm C. 75 mm D. 100 mm

When soil shows termite infestation, the building area shall be thoroughly drenched with Type I working solution at the rate of ___ A. 12 L/sq.m B. 6 L/sq.m C. 24 L/sq.m D. 8 L/sq.m

When soil shows NO termite infestation, the area shall be applied with Type I working solution at the rate of ___ A. 12 L/sq.m B. 6 L/sq.m C. 24 L/sq.m D. 8 L/sq.m

What method of soil poisoning is to be used when there is no visible evidence of termite infestation? A. Cordoning B. Drenching C. Confining D. Soaking

What method of soil poisoning is to be used when the soil shows visible evidence of termite infestation? A. Cordoning B. Drenching C. Confining D. Soaking

Maximum diameter of reinforcing bars shall not exceed ___ of the total thickness of slab A. 1/8 B. 1/5 C. 1/6 D. 1/7

What is the validity of the Certificate of Accreditation issued to the Accredited Private Testing Laboratory? A. 3 years B. 2 years C. 5 years D. 1 year

What is the frequency of 1 quality test per source of embankment material? A. Every 1500 sq.m B. Every 2500 sq.m C. Every 3000 sq.m D. Every 1000 sq.m

Field Density Test for ___ of each layer of compacted fill or fraction thereof at least 1 group of 3 in-situ density tests A. Every 1500 sq.m B. Every 2500 sq.m C. Every 3000 sq.m D. Every 1000 sq.m

What is the maximum thickness of each layer of embankment material in loose measurements? A. 300 mm B. 150 mm C. 200 mm D. 250 mm

For cement, there should be at least 1 quality test for every ___ or fraction thereof A. 1500 bags B. 2500 bags C. 2000 bags D. 3000 bags

For base and surface courses, 1 Abrasion test is conducted for ___ per source of fraction thereof A. Every 1500 sq.m B. Every 2500 sq.m C. Every 3000 sq.m D. Every 1000 sq.m

For base and surface courses, 1 Compaction test is conducted for ___ per source or fraction thereof A. Every 1500 sq.m B. Every 2500 sq.m C. Every 3000 sq.m D. Every 1000 sq.m

For hydrated lime, there should be at least 1 quality test for every ___ or fraction thereof A. 1500 bags B. 2500 bags C. 2000 bags D. 3000 bags

For corrugated and plain Galvanized Iron Sheets, there should be at least 1 quality test for every ___ or fraction thereof A. 1500 sheets B. 2500 sheets C. 2000 sheets D. 1000 sheets

When conducting Pile Integrity Test, at least ___ of the total number of piles shall be tested at each abutment and pier A. 50% B. 75% C. 25% D. 33%

For concrete hollow blocks, there should be 2 quality tests per lot of more than 10000 and less than 100000 and for lots more than 100000 units should be 1 for every ___ units A. 50,000 B. 75,000 C. 25,000 D. 10,000

For Paints, there should be 1 quality test per ___ cans or fraction thereof A. 200 B. 150 C. 100 D. 250

Abrasion Machine shall be calibrated once every ___ A. 2 years B. 3 years C. 1 year D. 6 months

Universal Testing Machine shall be calibrated once every ___ A. 2 years B. 3 years C. 1 year D. 6 months

What is the maximum allowable stress used when designing a PVC sheet pile structure? A. 22 MPa B. 15 MPa C. 50 MPa D. 34 MPa

What is the minimum tensile strength of PVC sheet pile A. 22 MPa B. 70 MPa C. 50 MPa D. 34 MPa

What is the minimum flexural strength of PVC Sheet Pile A. 22 MPa B. 70 MPa C. 50 MPa D. 34 MPa

What is the concrete class used for concrete piles A. A B. B C. C D. D

Pieces of concrete not exceeding ___ can be used as embankment A. 0.20 sq.m B. 0.15 sq.m C. 0.10 sq.m D. 0.25 sq.m

What is the over dredging tolerance of Item 1703, Dredging for Flood and River Control Structures A. 200 mm B. 300 mm C. 250 mm D. 350 mm

For Pea Gravel, there should be 1 Grading test for ___ per source or fraction thereof A. Every 500 sq.m B. Every 250 sq.m C. Every 300 sq.m D. Every 75 sq.m

For fine and course aggregates. there should be 1 grading test for ____ per source or fraction tehreof A. Every 500 sq.m B. Every 250 sq.m C. Every 300 sq.m D. Every 75 sq.m

For fine and course aggregates. there should be 1 quality test for ___ per source or fraction thereof A. Every 1500 sq.m B. Every 2500 sq.m C. Every 3000 sq.m D. Every 1000 sq.m

Draining Air Testing for Storm Drainage Systems, the pressure shall be held without introduction of additional air for a period of not less than ____ A. 10 minutes B. 15 minutes C. 20 minutes D. 25 minutes

During Water Testing for Storm Drainage Systems, water shall be kept in the system or in the portion under test for not less than ___ before inspection starts A. 10 mins B. 15 mins C. 20 mins D. 25 mins

Manufacturer of chemical or toxicants used for termite control shall be accredited by the EOH through A. FDA B. PDEA C. NBI D. PNP

For Liquid Termiticide Concentrate. the concentrate shall be diluted with water in the proportion of 1L of concentrate material to ___ of water A. 50 L B. 65 L C. 60L D. 70 L

Rocks weighing 2.5 tons and above used for Rockworks are classified as A. Class I B. Class II C. Class III D. Class IV

Which of the following shape of rocks is acceptable for Rockworks? A. Rounded B. Angular C. Well-Rounded D. None of the above

Splices of reinforcing steel bars shall be staggered as far as possible and with a minimum separation of not less than ___ diameters A. 40 bar B. 50 bar C. 60 bar D. 75 bar

Epoxy coated reinforcing steel bars hall be applied with protective epoxy coating by the electrostatic spray method to strengthen the concrete and protect against corrosive conditions No case shall application of the coating be delayed more than ___ after cleaning A. 2 hrs B. 3 hrs C. 5 hrs D. 6 hrs

Which of the following is not a concrete surface finishing A. Float finish B. Trowel finish C. Concrete rubbed D. None of the above

When transporting and delivery of mixed concrete, the maximum temperature of concrete produced with heated aggregates, heated water, or both, shall at no time during its production or transportation exceed ___ A. 30 deg C B. 40 deg C C. 25 deg C D. 35 deg C

When a truck mixer or agitator is used for transporting concrete to the delivery point, discharge shall be completed within 1 hour or before ___ revolutions of the drum or blades. whichever comes first, after the introduction of the cement to the aggregates A. 250 B. 150 C. 200 D. 300

When mixing concrete at side, all concrete shall be mixed for a period of not less than ___ after all materials, including water, are in the mixture A. 60 dec B. 45 dec C. 120 sec D. 90 sec

During delivery of concrete, what is the maximum interval between deliveries of batches? A. 10 mins B. 15 mins C. 20 mins D. 30 mins

Volumetric measurement shall be used only if the batching plant is located more than ___ travel from the project site A. 1 hr B. 1.5 hrs C. 2 hrs D. 2.5 hrs

Stockpiling of embankment material shall not be situated within ___ of a watercourse or permanent structure A. 30 m B. 40 m C. 25 m D. 35 m

For embankment, what is the minimum area for compaction trials? A. 300 sqm B. 500 sqm C. 250 sqm D. 350 sqm

Removal or undisturbed stumps and roots and nonperishable solid objects with a minimum depth of ___ below subgrade or slope of embankment is not required A. 1 m B. 2 m C. 2.5 m D. 1.5 m

1 quality test of concrete pipes for every ___ pieces A. 100 B. 200 C. 25 D. 50

MANUAL REVIEWER COMBI 2 Flashcards

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