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Asphalt Paving Gc Exam Questions With Solutions
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Asphalt Paving Gc Exam Questions With Solutions
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Asphalt Paving Gc Exam QuestionsWith Solutions
Base Course - ANSWER- Layer or layers of specified material of designated thickness
or rate of application based on a subbase or subgrade to support the subsequent layers
Bridge - ANSWER- Over a depression; longer than 20'
The subgrade is the top _______ of roadbed upon which the pavement structure and
shoulders are constructed - ANSWER- 18"
Do not use glass in the top _____ of the embankment - ANSWER- 18"
Clear and grub minimum of ____ from each edge of proposed pavement along both
lanes and legs of interchange - ANSWER- 30'
Where clearing and grubbing within the roadway is indicated at a bridge site, clear by
cutting all trees, stumps, etc. to within ______ of the ground or to low water in the full
width of the ROW for a distance of 75' beyond the beginning and end of the proposed
bridge - ANSWER- 8"
Compact the subgrade between the lines ____ inches outside the area occupied by the
pavement structure, including C&G & SW to not less than 95% of max density -
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 stone retained on the sieve - ANSWER- 80%
#4 sieve - ANSWER- 4.75 mm
Ensure finished surface of base varies neither than 3/8" from a straight edge 10' long
when applied parallel to the CL of the rd, no more than ______ inch from the typical
cross-section on the plans - ANSWER- 1/2"
Thickness of completed modified base is measured at staggered intervals not to exceed
_____ feet in length for two-lane roads - ANSWER- 250'
Use _______ in all base courses as an anti-stripping additive - ANSWER- hydrated lime
Where plans required uniform thickness of base course and the contract provides for
pavement on sq yd bases, thickness of base course is determined from measurements
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, taken of the completed base course at intervals not exceeding _____ feet for two-lane
roads - ANSWER- 500'
For HMA, use aggregates with a combined specific gravity of _____ or less - ANSWER-
2.90
ON HMA use pneumo-rollers that are self propelled and have an effective rolling width
of not less than _______ - ANSWER- 60"
Ensure intermediate rolling of HMA is completed before mat temp drops below _____ -
ANSWER- 175 degrees
First step in applying asphalt surface treatment (single) - ANSWER- Clean surface
Last step in applying asphalt surface treatment (single) - ANSWER- Remove excess
aggregate
Spread aggregate for HMA within _____ feet of the application of the emulsion -
ANSWER- 200'
Place asphalt surface treatment (double) within ____ days of the base course being
primed - 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 - ANSWER- 1/2
On portland cement pavement, position lower surface of preformed joint filler on or
below surface of base while upper surface is _____ inches below surface of the slab -
ANSWER- 1/2"
When using surface vibrators on portland concrete, ensure frequency is not less than
______ impulses per minute - ANSWER- 3500
Construct subbase and base beneath concrete pavement to include area _____ inches
in width extending beyond edges to provide stability for paver tracks - ANSWER- 18"
Min. width of any reinforced concrete slab is ______ feet - ANSWER- 16'
Max. length of any reinforced concrete slab is ______ feet - ANSWER- 20'
Exclude all vehicle traffic from newly constructed concrete pavement for a period of not
less than ______ days - ANSWER- 14
Finish joints should not deviate more than ____ inch in the horizontal alignment from a
straight line - ANSWER- 1/4"
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