RC 1

Question 1

What is the main purpose of clearing and grubbing?

A. To level the site for drainage
B. To remove existing roads
C. To remove vegetation and obstruction
D. To excavate the roadway

Answer 1

C

Question 2

What is the minimum depth for slumo and root removal

A. 200 mm
B. 300 mm
C. 500 mm
D. 1000 mm

Answer 2

C

Question 3

How is clearing and grubbing mesured?

A. Cu.m
B. Sq.m
C. L.m
D. Hectare

Answer 3

D

Question 4

Under Item 101, which of the following is typically NOT removed?

A. Old pavements
B. Buildings
C. Guardrails
D. Embankment Fills

Answer 4

D

Question 5

What happens o salvageable materials during removal operations?

A. Discarded
B. Buried Onsite
C. Reused and stored as directed
D. Auctioned

Answer 5

C

Question 6

What is included in the payment for removal operations?

A. Demolition Only
B. Transportation Only
C. Removl and proper disposal
D. Equipment rental only

Answer 6

C

Question 7

What is the standard free-haul distance for excavation?

A. 100 m
B. 300 m
C. 500 m
D. 600 m

Answer 7

D

Question 8

Which of the following is NOT a type of excavation in Item 102?

A. Roadway Excavation
B. Borrow Excavation
C. Selected Borrow for Embankment
D. Concrete Excavation

Answer 8

D

Question 9

How is excavation work measured?

A. By weight
B. By sq.m
C. In-place volume
D. Original ground volume (cu.m)

Answer 9

D

Question 10

Structure excavation is used primarily for

A. Canal cleaning
B. Drainage maintenance
C. Foundations for brides and culverts
D. Traffic signs installation

Answer 10

C

Question 11

Measurement of structure excavation includes

A. Surface area
B. Total road length
C. Design volume plus working space
D. Design depth only

Answer 11

C

Question 12

Maximum uncomoacted thickness of embank,ent layer is

A. 150 mm
B. 200 mm
C. 300 mm
D. 350 mm

Answer 12

B

Question 13

What is the required compaction for embankment material?

A. 90%
B. 93%
C. 95% of MDD
D. 98%

Answer 13

C

Question 14

What test is typically used to determine MDD for embankment compation

A. AASHTO T97
B. AASHTO T89
C. AASHTO T180 or T99
D. AASTO T11

Answer 14

C

Question 15

What must be completed before subgrade preparation begins

A. Traffic lights
B. Drainage structures and culvert backfilling
C. Asphalt paving
D. Fence installation

Answer 15

B

Question 16

What is the maximum surface irregularity allowed in subgrade

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

Answer 16

C

Question 17

Minimum depth of compaction below subgrade level is

A. 100 mm
B. 120 mm
C. 150 mm
D. 200 mm

Answer 17

C

Question 18

What is the typical area of a control strip

A. 100 sq.m
B. 200 sq.m
C. 335 sq.m
D. 500 sq.m

Answer 18

C

Question 19

What is the required target density for control strips

A. 95%
B. 97%
C. 98% of lab-compacted density
D. 100%

Answer 19

C

Question 20

When is a new control strip required?

A. Change in material
B. Every 10 days
C. Engineer’s instruction
D. All of the above

Answer 20

D

Question 21

What is “overhaul”

A. Excavation below water table
B. Hauling beyond the free-haul distance
C. Rehandling unsuitable materials
D. Doucble compaction of borrow

Answer 21

B

Question 22

What is the unit of payment for overhaul

A. Cu.m
B. L.m
C. q.m
D. Cu.m-km

Answer 22

D

Question 23

If the contractor uses a longer haul rout not approved by the Engr, what is the payment basis?

A. Actual longer distance
B. Roun trip
C. Shortest feasible route designated by the Engr
D. No payment

Answer 23

C

Question 24

Before beginning earthwork operations on a new road alignment, the ME observes that there are several large trees, old concrete fence posts, and thick vegetation. What should be the FIRST step in compliance with DPWH Item 100?

A. Start excavation work alongside the vegetated area
B. Submit a tree-cutting permit and start grubbing the area
C. Clear and grub the entire roadway width, remove obstruction, and dispose properly
D. Cut only the smallvegetation and return for the rest of the subgrade work

Answer 24

C

Question 25

An old culvert pipe lies within the new pavement area. The contract includes Item 101. The Engr orders its removal and reuse if salvagebale. How should this be handled? A. Remove and discard immediately regardless of co ndition B. Demolish and disposed at the borrow pit C. Remove carefully, stockpile slvageable parts, and resure or store as directed D. Abandon in place and cover with embankment

Answer 25

C

Question 26

During excavation, the contractor hauls common material 900 m away to the designated embankment site. What portion is overhaul? A. Full 900m B. First 300m C. 300m D. 900m minus the 600m free haul

Answer 26

D

Question 28

The embankment layers are being places at 300mm uncompacted thickness. Compaction tests show non-compliance. What action is most appropriate? A. Continue as long as progress is fast B. Accept the work and place the enxt layer C. Remove the layer and compact in two lifts not exceeding 200mm each D. Add water and recompact at 300mm

Answer 28

C

Question 29

You inspect a road section where pavement construction has started but culverts and drains are not yet completed. Is this allowed? A. Yes if equipment is available B. No prior works must be completed and apprpved C. Yes if weather is good D. Yes provided embankment is stable

Answer 29

B

Question 30

Before full-scale embankment compactiom. the Engr instructs the Contractor to construct a 335sq.m test area. The average density obtained is 96% of the laboratory value. What should be done? A. Proceed with compaction using 96% B. Accept control strip and begin full compaction C. Construct another control strip until 98% is achieved D. Increase the lift thickness for better ersults

Answer 30

C

Question 31

The contractor decides to use a longer but smoother route fo hauling borrow material from a pit 800m away. The Engr had designated a shorter 650m route. For emasurement of overhaul, which distance should be sued? A. 700m B. 600m C. 650m D. Difference between 800 and 600

Answer 31

C

Question 32

During quality control inspection of a road project, your compaction tests at a 150mm thk embankment layer shows 93% compaction. The required is 95% MDD as per AASHTO T99. Moisture content is within acceptable limits. A. Apply a proof roller and proceed with the enxt layer B. Accept the reslt since it is close to 95% C. Require additional compaction until 95 is achieved D. Apply lime stabilization to improve compaction

Answer 32

C

Question 33

Subgrade inspection reveals elevation discrepancies +22mm in one section and -35mm in another A. Accept both since surface irregularit is within 30mm B. Only correct the -35mm C. Correct both to meet at 20mm level and 30mm irregulatiry tolerance D. Increase thickness of base course to compensate

Answer 33

C

Question 34

Contrl strip for asphalt base yields 97.2% compaction compared to Marshall lab specimen. Equipment used is different from that intended for actual construction. A. Accept the control strip and beign full paving B. Repeat control strip using the actual construction equipment C. Accept if within +-3% of the lab result D. Use rolling pattern developed in the current ontrol strip

Answer 34

B

Question 35

During excavation for a footing, water seeps from the side, saturating the bottom. Contractor proposes to proceed by placing concrete. As ME, what should you advise? A. Allow concreting with added cement for strength B. Dewater and stabilize before pouring concrete C. Proceed only if water is clear D. Apply a binding layer and pour concrete

Answer 35

B

Question 36

A 2000 cu.m volume of suitable embankment material is transported 1.2km. The contract provides for a 600m free haul. What is the total qty in cu.m-km eligible for overhaul payment? A. 2400 B. 1200 C. 1000 D. 600

Answer 36

B

Question 37

A contractor proposes to plac 300 mm loose thickness layers to speed up embankment work, with single-pass compaction using a 10-ton roller. As ME, how do you respond? A. Approve the plan if compaction tests pass B. Reject the method and require max 200 mm loose thickness C. Allow for weathered soil types only D. Accept if supervised by Engineer-in-Charge

Answer 37

B

Question 38

You are retrofitting a concrete road by overlaying asphalt. The existing PCC pavement has not been broken into smaller slabs. According to Item 105, what step must be performed before proceeding? A. Seal cracks with epoxy B. Scarfiy the slab surface and clean C. Break the PCC into <= 500mm slab and comapct D. Apply bituminous tack coat

Answer 38

C

Question 39

A 5.5-ton vibratory roller is used for the control strip of base course. Upon review, it is found to be under 6 tons. What is the most correct action based on specs? A. Approve use of the roller as-is B. Require additional passes to make up for size C. Reject and require 6-ton minimum vibratory roller D. Require proof rolling test

Answer 39

C

Question 40

After excavation, a portion of the cut section is left open and unprotected for several days. Rainfall causes erosion and slope failure. What specificaton or construction management issue is primarily violated? A. No slope protection measures implemented B. Lack of engr's approval C. No rebard cages installed D. Compaction was not performed

Answer 40

A

Question 41

The contractor wants to use rock materials larger than 150mm in diameter at the base of an embankment section. What is the correct procedure under DPWH specifications? A. Mix with soil to stabilize B. Allow only in the top 1 meter C. Place in layers, fill voids with finer material, and compact D. Reject rock emabnkment below 200 mm

Answer 41

C