SCDOT-ASPHALT ROADWAY
TECHNICIAN EXAM STUDY GUIDE
2026 COMPLETE QUESTIONS WITH
CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS
<RECENT VERSION>
1. What does OGFC stand for? - ANSWER ✔ Open Graded Friction Course
2. What is OGFC? - ANSWER ✔ Thin lift with high air voids that allow for
water to run through and drain to the side of a road instead of in the middle
of the road
3. What common sieves do we use daily? - ANSWER ✔ 200
100
30
8
4
3/8 inch
1/2 inch
3/4 inch
1 inch
1/2 inch
4. What is the mix temperature for 76-22? - ANSWER ✔ 300-350 degrees F
,5. How much does a steel wheel roller weigh? - ANSWER ✔ 8-12 tons
6. How often does the ambient air temperature get taken? - ANSWER ✔
Before paving starts, then 2 per lot
7. How often does the truck temperature get taken? - ANSWER ✔ 4 per lot
8. How often does the mat temperature behind the screws get checked? -
ANSWER ✔ 4 per lot
9. How often is the calculated lay down rate taken? - ANSWER ✔ 1 per 200
tons
10.How often is the tack rate checked? - ANSWER ✔ 1 per application
11.What type of mixes require cores to be cut when checking in place density? -
ANSWER ✔ Intermediate A & B
Surface A & B
12.On mixes that require cores to be cut, how often are they taken? - ANSWER
✔ Every 1500 feet
13.What type of mixes require gauge shots to be taken for in place density? -
ANSWER ✔ Intermediate C
Surface C & D
All Base mixes
,14.On mixes that require gauge shots for density, how often is it taken? -
ANSWER ✔ Every 500 feet paved
15.What mixes do we use most commonly? - ANSWER ✔ Surface A-E
Intermediate A-C
Base A-B
Base Shoulder mix
16.What test procedure is used to determine random numbers? - ANSWER ✔
SC-T-101
17.What average of cores equals 100% pay? - ANSWER ✔ 93.0-93.9
18.Measure of Successful HMA Placement - ANSWER ✔ 10%-20% Air voids
behind paver.
19.Smooth Surface - ANSWER ✔ Uniform Asphalt.
20.Hot Mix Asphalt Compaction - ANSWER ✔ The final step in the
construction of a durable, smooth riding asphalt pavement.
21.Asphalt Binder - ANSWER ✔ Holds particles together. Provides lubrication
at high temperatures. Provides cohesion at in-service temperatures. Prevents
Air and Water intrusion into mat.
22.Air voids - ANSWER ✔ Spaces in the pavement not filled by aggregate or
asphalt. After placement and compaction, no more than 8.0% in-place air
voids.
, 23.Factors affecting compaction - ANSWER ✔ Mix Properties (Aggregate,
Asphalt and Mix Temperatures), Layer Thickness, Environmental Factors.
24.Compaction Equipment - ANSWER ✔ Compaction Equipment exerts force
into the pavement through weight and/or dynamic vibration.
25.Types of compaction equipment - ANSWER ✔ Vibratory screed on paver
(10%-20% air voids) and Rollers (no more than 8.0% air voids).
26.Typical compaction temperature range - ANSWER ✔ 175°F - 300°F for
intermediate rollers. Finish rollers can be done at lower temperatures.
27.Roller types - ANSWER ✔ Static Steel Wheeled, Pneumatic-Tired and
Vibratory.
28.Static Steel Wheeled Rollers - ANSWER ✔ Compact by Dead Weight;
ballast can be used to add additional weight.
29.Requirements for Steel Wheeled rollers - ANSWER ✔ 8-12 tons on tandem
drum rollers required; minimum 250 lbs of pressure per inch of roller width.
30.Pneumatic Tired Rollers - ANSWER ✔ Compacts by tire contact pressure
using dead weight of machine and ballast for additional weight.
31.Requirements for Pneumatic Tired rollers - ANSWER ✔ Effective rolling
width should not be less than 60 inches; average contact pressures: 60-80
psi, recommended by adjusting ballast and tire inflation.
TECHNICIAN EXAM STUDY GUIDE
2026 COMPLETE QUESTIONS WITH
CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS
<RECENT VERSION>
1. What does OGFC stand for? - ANSWER ✔ Open Graded Friction Course
2. What is OGFC? - ANSWER ✔ Thin lift with high air voids that allow for
water to run through and drain to the side of a road instead of in the middle
of the road
3. What common sieves do we use daily? - ANSWER ✔ 200
100
30
8
4
3/8 inch
1/2 inch
3/4 inch
1 inch
1/2 inch
4. What is the mix temperature for 76-22? - ANSWER ✔ 300-350 degrees F
,5. How much does a steel wheel roller weigh? - ANSWER ✔ 8-12 tons
6. How often does the ambient air temperature get taken? - ANSWER ✔
Before paving starts, then 2 per lot
7. How often does the truck temperature get taken? - ANSWER ✔ 4 per lot
8. How often does the mat temperature behind the screws get checked? -
ANSWER ✔ 4 per lot
9. How often is the calculated lay down rate taken? - ANSWER ✔ 1 per 200
tons
10.How often is the tack rate checked? - ANSWER ✔ 1 per application
11.What type of mixes require cores to be cut when checking in place density? -
ANSWER ✔ Intermediate A & B
Surface A & B
12.On mixes that require cores to be cut, how often are they taken? - ANSWER
✔ Every 1500 feet
13.What type of mixes require gauge shots to be taken for in place density? -
ANSWER ✔ Intermediate C
Surface C & D
All Base mixes
,14.On mixes that require gauge shots for density, how often is it taken? -
ANSWER ✔ Every 500 feet paved
15.What mixes do we use most commonly? - ANSWER ✔ Surface A-E
Intermediate A-C
Base A-B
Base Shoulder mix
16.What test procedure is used to determine random numbers? - ANSWER ✔
SC-T-101
17.What average of cores equals 100% pay? - ANSWER ✔ 93.0-93.9
18.Measure of Successful HMA Placement - ANSWER ✔ 10%-20% Air voids
behind paver.
19.Smooth Surface - ANSWER ✔ Uniform Asphalt.
20.Hot Mix Asphalt Compaction - ANSWER ✔ The final step in the
construction of a durable, smooth riding asphalt pavement.
21.Asphalt Binder - ANSWER ✔ Holds particles together. Provides lubrication
at high temperatures. Provides cohesion at in-service temperatures. Prevents
Air and Water intrusion into mat.
22.Air voids - ANSWER ✔ Spaces in the pavement not filled by aggregate or
asphalt. After placement and compaction, no more than 8.0% in-place air
voids.
, 23.Factors affecting compaction - ANSWER ✔ Mix Properties (Aggregate,
Asphalt and Mix Temperatures), Layer Thickness, Environmental Factors.
24.Compaction Equipment - ANSWER ✔ Compaction Equipment exerts force
into the pavement through weight and/or dynamic vibration.
25.Types of compaction equipment - ANSWER ✔ Vibratory screed on paver
(10%-20% air voids) and Rollers (no more than 8.0% air voids).
26.Typical compaction temperature range - ANSWER ✔ 175°F - 300°F for
intermediate rollers. Finish rollers can be done at lower temperatures.
27.Roller types - ANSWER ✔ Static Steel Wheeled, Pneumatic-Tired and
Vibratory.
28.Static Steel Wheeled Rollers - ANSWER ✔ Compact by Dead Weight;
ballast can be used to add additional weight.
29.Requirements for Steel Wheeled rollers - ANSWER ✔ 8-12 tons on tandem
drum rollers required; minimum 250 lbs of pressure per inch of roller width.
30.Pneumatic Tired Rollers - ANSWER ✔ Compacts by tire contact pressure
using dead weight of machine and ballast for additional weight.
31.Requirements for Pneumatic Tired rollers - ANSWER ✔ Effective rolling
width should not be less than 60 inches; average contact pressures: 60-80
psi, recommended by adjusting ballast and tire inflation.
