Asphalt Paving GC Exam Questions and Answers (Graded A)
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Course
Asphalt Paving GC
Institution
Asphalt Paving GC
Asphalt Paving GC Exam Questions and Answers (Graded A)Asphalt Paving GC Exam Questions and Answers (Graded A)Asphalt Paving GC Exam Questions and Answers (Graded A)Base Course - ANSWER-Layer or layers of specified material of designated thickness or rate of application based on a subbase or subgra...
Asphalt Paving GC Exam Questions and
Answers (Graded A)
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
, 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"
In hot weather, do not allow mass concrete mix temperature measured at discharge into
the forms to exceed ______ degrees - ANSWER-80 degrees
Wet-cure surface of bridge decks for minimum of - ANSWER-7 days
Wet-cure structural concrete other than bridge decks for period of ____ days and cover
with curing blankets - ANSWER-4 days
Do not remove forms in less than ______ hours, nor more than 48 hours - ANSWER-5
hours
Wait a minimum of ____ hours between placing footing or driller pier concrete and
erecting column forms - ANSWER-12 hours
When using surface vibrators on portland concrete, ensure frequency is not less than
______ impulses per minute - ANSWER-3500
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