Questions With Complete solutions
S to N - Answer-Downstation
/.W to E - Answer-Downstation
/.Stationing - Answer-Starts at 0+00
/.Stationing Measurement - Answer-1+00 is 100 feet
/.Straight Edge is the - Answer-Measurement of Pavement smoothness with a 15 foot
4.573 m rolling straightedge
/.Straight Edge is used to - Answer-identify problems
/.Random sampling - Answer-Are random numbers generated usually by a VT for cores
to be extracted from the roadway
/.How often should you calibrate a Straight edge - Answer-Calibrate at the start of each
working period
/.Using the manual straight edge you find what kind of spot to place the rolling
straightedge? - Answer-Locate a flat area with the manual straightedge and place the
rolling straightedge next to the manual straightedge and the gauge should read 0
/.The 3/16 and the 3/8 shims go under which wheels during calibration - Answer-The
outside wheels to measure the low and the center to measure the high. Gauge should
read 3/16 on the 3/16 shim and vice versa for the 3/8 shims. Make sure the center
wheel moves up and down freely.
/.Calibration materials for Straightedge - Answer-Rolling Straightedge
Manual Straightedge
Manual Measurement (ruler)
x4 3/16 shims 5mm thick
x4 3/8 shims 10mm thick
/.When to perform final straightedge - Answer-After an entire lane has been paved
/.When to perform final straightedge - Answer-Pavement should be an ambient
temperature
/.You cannot use the straightedge until it has been properly - Answer-calibrated
, /.When performing the straightedge procedure - Answer-Maintain proper traffic
management and safety
/.Cross slopes can be either done - Answer-Manually or with a smart level
/.When using a manual cross slope you first - Answer-Place a simple level on pavement
/.After placing the simple level on the pavement then you - Answer-Raise the down end
of the level until it is level (bubble center)
/.After the simple level is lifted until it is level you measure what - Answer-The length of
the simple level and the height between the (previously down) end of the level to the
pavement
/.Formula to calculate the manual cross slope - Answer-Calculate the slope using the
formula
( h / l ) x 100 = slope %
/.Requirements for the rolling Straightedge - Answer-Must have a read out gauge, kept
clean and in working order, low and high reading, and marks to the nearest 1/16 (1mm)
/.Rolling Straightedge pulled at - Answer-3 to 5mph or less
/.Deficiencies pointed out with rolling straightedge you should first - Answer-Mark the
pavement at the center wheel where the needle initially shows a deficiency and where is
ends. Also record location and measurements of deficiency.
/.Core sampling is used for - Answer-testing density
and permeability
/.Core sampling equipment - Answer-Concrete saw
Diamond bit core drill
Size of core depends on test
Ice chest (Optional)
Ice (Optional)
Asphalt to patch hole
/.During core sampling the barrel should always be - Answer-perpendicular to pavement
/.Core sampling patching - Answer-Fill hole with patch mix, if in lifts tamp each lift
/.Storing cores - Answer-Store in ice chest with bagged ice on top or put in an air
conditioned cab
Best stored upright in a cool place
DO NOT THROW INTO PICKUP