ASPHALT PAVING GC EXAM QUESTIONS
WITH CORRECT ANSWERS 2025-2026
Base Course CORRECT ANSWER
Layer or layers of specified material of designated thickness or rate of application based on a s
ubbase or subgrade to support the subsequent layers
Bridge CORRECT ANSWER Over a depression; longer than 20'
The subgrade is the top of roadbed upon which the pavement structure and shoulder
s are constructed CORRECT ANSWER 18"
Do not use glass in the top of the embankment CORRECT ANSWER 18"
Clear and grub minimum of from each edge of proposed pavement along both lanes and
legs of interchange CORRECT ANSWER 30'
Where clearing and grubbing within the roadway is indicated at a bridge site, clear by cutting a
ll trees, stumps, etc. to within of the ground or to low water in the full width of the RO
W for a distance of 75' beyond the beginning and end of the proposed bridge -
CORRECT ANSWER -8"
Compact the subgrade between the lines inches outside the area occupied by the pavem
ent structure, including C&G & SW to not less than 95% of max density CORRECT ANSWER
18"
Pulverize base course material so that the completion of the moist mixing 100% (by dry weight
) passes the 1.5" sieve and a minimum of passes the #4 sieve, exclusive of gravel and sto
ne retained on the sieve CORRECT ANSWER 80%
,#4 sieve CORRECT ANSWER 4.75 mm
Ensure finished surface of base varies neither than 3/8" from a straight edge 10' long when ap
plied parallel to the CL of the rd, no more than inch from the typical cross-
section on the plans CORRECT ANSWER 1/2"
Thickness of completed modified base is measured at staggered intervals not to exceed
feet in length for two-lane roads CORRECT ANSWER 250'
Use in all base courses as an anti-stripping additive CORRECT
ANSWER hydrated lime
Where plans required uniform thickness of base course and the contract provides for pavemen
t on sq yd bases, thickness of base course is determined from measurements taken of the com
pleted base course at intervals not exceeding feet for two-lane roads -
CORRECT ANSWER -500'
For HMA, use aggregates with a combined specific gravity of or less
CORRECT ANSWER 2.90
ON HMA use pneumo-
rollers that are self propelled and have an effective rolling width of not less than
CORRECT ANSWER 60"
Ensure intermediate rolling of HMA is completed before mat temp drops below
CORRECT ANSWER 175 degrees
First step in applying asphalt surface treatment (single) CORRECT ANSWER Clean surface
, Last step in applying asphalt surface treatment (single) CORRECT ANSWER
Remove excess aggregate
Spread aggregate for HMA within feet of the application of the emulsion
CORRECT ANSWER 200'
Place asphalt surface treatment (double) within days of the base course being primed
CORRECT ANSWER 7
When rolling aggregate applications for asphalt surface treatment (double) on each trip of the
roller, overlap prior by _____ the width of the roller CORRECT ANSWER 1/2
On portland cement pavement, position lower surface of preformed joint filler on or below sur
face of base while upper surface is inches below surface of the slab -
CORRECT ANSWER -1/2"
When using surface vibrators on portland concrete, ensure frequency is not less than i
mpulses per minute CORRECT ANSWER 3500
Construct subbase and base beneath concrete pavement to include area inches in width
extending beyond edges to provide stability for paver tracks CORRECT ANSWER 18"
Min. width of any reinforced concrete slab is feet CORRECT ANSWER 16'
Max. length of any reinforced concrete slab is feet CORRECT ANSWER 20'
Exclude all vehicle traffic from newly constructed concrete pavement for a period of not less th
an days CORRECT ANSWER 14
WITH CORRECT ANSWERS 2025-2026
Base Course CORRECT ANSWER
Layer or layers of specified material of designated thickness or rate of application based on a s
ubbase or subgrade to support the subsequent layers
Bridge CORRECT ANSWER Over a depression; longer than 20'
The subgrade is the top of roadbed upon which the pavement structure and shoulder
s are constructed CORRECT ANSWER 18"
Do not use glass in the top of the embankment CORRECT ANSWER 18"
Clear and grub minimum of from each edge of proposed pavement along both lanes and
legs of interchange CORRECT ANSWER 30'
Where clearing and grubbing within the roadway is indicated at a bridge site, clear by cutting a
ll trees, stumps, etc. to within of the ground or to low water in the full width of the RO
W for a distance of 75' beyond the beginning and end of the proposed bridge -
CORRECT ANSWER -8"
Compact the subgrade between the lines inches outside the area occupied by the pavem
ent structure, including C&G & SW to not less than 95% of max density CORRECT ANSWER
18"
Pulverize base course material so that the completion of the moist mixing 100% (by dry weight
) passes the 1.5" sieve and a minimum of passes the #4 sieve, exclusive of gravel and sto
ne retained on the sieve CORRECT ANSWER 80%
,#4 sieve CORRECT ANSWER 4.75 mm
Ensure finished surface of base varies neither than 3/8" from a straight edge 10' long when ap
plied parallel to the CL of the rd, no more than inch from the typical cross-
section on the plans CORRECT ANSWER 1/2"
Thickness of completed modified base is measured at staggered intervals not to exceed
feet in length for two-lane roads CORRECT ANSWER 250'
Use in all base courses as an anti-stripping additive CORRECT
ANSWER hydrated lime
Where plans required uniform thickness of base course and the contract provides for pavemen
t on sq yd bases, thickness of base course is determined from measurements taken of the com
pleted base course at intervals not exceeding feet for two-lane roads -
CORRECT ANSWER -500'
For HMA, use aggregates with a combined specific gravity of or less
CORRECT ANSWER 2.90
ON HMA use pneumo-
rollers that are self propelled and have an effective rolling width of not less than
CORRECT ANSWER 60"
Ensure intermediate rolling of HMA is completed before mat temp drops below
CORRECT ANSWER 175 degrees
First step in applying asphalt surface treatment (single) CORRECT ANSWER Clean surface
, Last step in applying asphalt surface treatment (single) CORRECT ANSWER
Remove excess aggregate
Spread aggregate for HMA within feet of the application of the emulsion
CORRECT ANSWER 200'
Place asphalt surface treatment (double) within days of the base course being primed
CORRECT ANSWER 7
When rolling aggregate applications for asphalt surface treatment (double) on each trip of the
roller, overlap prior by _____ the width of the roller CORRECT ANSWER 1/2
On portland cement pavement, position lower surface of preformed joint filler on or below sur
face of base while upper surface is inches below surface of the slab -
CORRECT ANSWER -1/2"
When using surface vibrators on portland concrete, ensure frequency is not less than i
mpulses per minute CORRECT ANSWER 3500
Construct subbase and base beneath concrete pavement to include area inches in width
extending beyond edges to provide stability for paver tracks CORRECT ANSWER 18"
Min. width of any reinforced concrete slab is feet CORRECT ANSWER 16'
Max. length of any reinforced concrete slab is feet CORRECT ANSWER 20'
Exclude all vehicle traffic from newly constructed concrete pavement for a period of not less th
an days CORRECT ANSWER 14
