# Shared Flashcard Set

## Details

Asphalt Paving
Asphalt and Paving Exam
108
Engineering
Professional
07/30/2013

Term
 What does RS stand for?
Definition
 Reference Stake
Term
 What do the markings above and below the diagonal lines on a cut stake indicate?
Definition
 The amount of cut is above the diagonal and the distance is below.
Term
 What other abbreviation means the same as RS?
Definition
 RP
Term
 If the RS distance is followed by a double line, where must the remainder of the grades and distances be established?
Definition
Term
 How much will a 2% slope rise or fall in 20ft?
Definition
 .40 foot
Term
 Where is the elevation on the side of the surveyor  information stake taken from?
Definition
 The survey hub
Term
 What does it mean to the grade setter if every distance on a surveyor's stake is followed by a double line?
Definition
 He must take the next grade and distance from each preceeding point
Term
 4in is equal to?
Definition
 .33 foot
Term
 What is the purpose of a second horizontal line on a fill stake located 1ft above finished grade?
Definition
 To help the grade setter set the next fill stake
Term
 What do the west and east toe grades on a ditch channel stake indicate?
Definition
 The bottom of the slope on either side of the channel
Term
 If you have a 4-foot swede and your finished grade at centerline is .30 higher, what should you ruler reading be? (If the centerpoint is 2ft, what is .3 higher than that?)
Definition
 3.7ft
Term
 What do you call a method of setting grade at a centerpoint by sighting across three lath?
Definition
 Setting swedes
Term
 To set an 8-foot sting line for a 6.13-foot ditch cut, what must be added to the surveyors grade in order the mark the grade pin correctly?
Definition
 1.87ft (6.13+1.87=8ft)
Term
 What will cause the laser unit to automatically shut off?
Definition
 If it's bumped off-level
Term
 What is a bench mark?
Definition
 A point of known elevation
Term
 What should you do if the reciever unit is not recieving a signal from the laser level?
Definition
 Slide the reciever up or down
Term
Definition
 F-3.08 (4.18-1.10=3.08)
Term
 What does it mean if a crows foot has a horizontal line drawn across it and there's an arrow with a circle through the tail pointing at that line?
Definition
Term
 If there's a cut of 3.50 and a 4-foot boot is needed, the grade setter measures up and marks the lath where?
Definition
 4
Term
 What is another name for a contour plan?
Definition
 Topographic plan
Term
 How can you tell when contour lines represent a steep slope?
Definition
 They are close together
Term
 What is indicated when contour lines connect to form a loop or circle?
Definition
 A depression or a mound
Term
 When do contour lines change grade?
Definition
 Never
Term
 In order to correctly mark the cut or fill to produce the finish grade, where must you start your measurements?
Definition
 At a known elevation
Term
 Using 9 feet as a baseline, what combination of measurements will allow you to make a 90-degree angle?
Definition
 9, 12 & 15 feet
Term
 Who, other than the surveyor, might set the grades for an industrial tract landscaping project?
Definition
 The excavation contractor
Term
 If checking a road section with a laser, how many elevations should be marked on the lath by the grade setter?
Definition
 Three
Term
Definition
 3.45(difference between stake and road section depth is subtracted from rod reading)
Term
 When using a laser with a sloping beam, what's the maximum distance from the trench centerline you'd want to set up to ensure accuracy?
Definition
 12ft
Term
 If a survey rod has a 10.50-foot measurement for flow line and you need a .5 undercut, where would you set the rod elevation?
Definition
 10ft(10.5ft flow line - .5 undercut = required rod elevation
Term
 How do you figure the undercut when determining trench depth for laying pipe?
Definition
 Add the thickness of the pipe to the thickness of the pipe bedding
Term
 What do you calibrate the cutting blade on a scraper to when using an on-board laser?
Definition
 A benchmark or known elevation
Term
 When setting a gps base station, what must always be set up plumb, level and in the same location each day?
Definition
 The GPS reciever unit
Term
 What is the minimum number of satellites you should be able to access to ensure the accuracy of a gps signal?
Definition
 5
Term
 What is the most difficult part of using GPS?
Definition
 The initial base unit setup and model building
Term
 What is the primary cost-cutting feature of concrete curb machines?
Definition
 No form crew is needed
Term
 What is the primary use for a profilograph?
Definition
Term
 What equipment is used to pour concrete roadways?
Definition
 Slip-form paver
Term
 What does an auger-driven curb machine use for grade?
Definition
 The asphalt base
Term
 A profiler can mill which type of road surfacing material?
Definition
 Both concrete and asphalt
Term
 What is the function of a grizzly?
Definition
 Sizing material
Term
 What does a reclaimer do?
Definition
 Grind up asphalt, mix dirt, mix aggregate.
Term
 What is the purpose of carbide teeth on a trencher?
Definition
 To dig through hard materials
Term
 What is the most important element to consider when operating a excavating and grading business?
Definition
 Safety!
Term
 What is the most efficient way to remove an old road surface?
Definition
 Grind and load with a profiler
Term
 What is the best choice for asphalt removal in a small area?
Definition
 A rubber-tired hoe with a 4-in-1 bucket
Term
 What is the advantage of using a bottom dump truck with a pickup machine?
Definition
 The paver doesn't have to stop
Term
 What is the acceptable temperature range for asphalt when paving?
Definition
 285 to 350 degrees
Term
 Open graded asphalt should NOT be placed when the weather drops below what temperature?
Definition
 60 degrees
Term
 When a paver is using sonar to follow a curb grade, what should control the grade on the other side?
Definition
 Slope control
Term
 When rolling asphalt, where should the first pass be made?
Definition
 On the lowest side
Term
 Unless specifications say otherwise, what size asphalt should you use for skin patches that must  match existing areas?
Definition
 3/8in
Term
 What is the usual spread rate for chips when chip sealing?
Definition
 15-30 pounds per square yard
Term
 What is one of the best ways to keep your excavating costs down?
Definition
 Use experienced equipment operators
Term
 Why is it important for the (earth) compactor operator to keep dozing dirt as he works?
Definition
 To mix the moisture evenly
Term
 What is the graders most important job when rough excavation starts?
Definition
Term
 Why would you choose to use a water tank rather than a standpipe?
Definition
Term
 What is the most efficient equipment for stripping?
Definition
Term
 What is the only area trimmed to finished grade during rough excavation?
Definition
Term
 Fill lots should be overfilled by how much for trim?
Definition
 .05 to .10 foot
Term
 When must you have erosion control measures in place?
Definition
 Any time there is a threat of rain
Term
 What are the usual compaction requirements for sidewalk and curb subgrade?
Definition
 90%
Term
 What are the usual compaction requirements for street subgrade?
Definition
 95%
Term
 What is the best equipment for cutting a rocky slope?
Definition
 Dozer with a slop bar
Term
 If an existing slope must be cut back 15ft at a 1:1 slope, how far back will the first cut be made?
Definition
 14ft. 1:1 means 1foot over, one foot up, its the rise over run, so slope excavation begins one foot in from the toe of the slope.
Term
 What is the usual slope tolerance of a rocky slope?
Definition
 2ft
Term
Definition
Term
 What is the standard compaction test required for a compaction test on a rock fill?
Definition
 You can't do a compaction test on a rock fill
Term
 What are straw filled waddles used for?
Definition
 Erosion control
Term
 What is the biggest difference between staking a commercial site and staking a road site?
Definition
 More stakes will be used
Term
 What three things must be included in the soils report?
Definition
 What to do with stripped topsoil, the amount of contour grading required, how much to overbuild the pads.
Term
 What type of island curb is placed on finished asphalt?
Definition
 6in glue down curb
Term
 What must be done to a fill are before any excavation can be placed on it?
Definition
 It must be ripped, watered and compacted.
Term
 How much are commercial building pads overbuilt?
Definition
 5ft
Term
 How can you make the rough grading of parking areas easier?
Definition
 Excavate through the island noses
Term
Definition
 .05 to .10
Term
 What should you have the surveyor do when initial excavation is completed?
Definition
Term
 When is it best to rip and compact the subgrade for parking areas?
Definition
 Before the curbs are poured
Term
 What should be done about any unsuitable soil discovered during excavation?
Definition
 It should be brought to the attention of the soils engineer
Term
 What should be done first before any work begins on a highway project?
Definition
 The forman and grade setter should go over the plans and staking
Term
 Why are right-of-way stakes set?
Definition
 To indicate limits of the work area
Term
 Where do you start the fill slope if the RS point is a foot low after clearing?
Definition
 2ft back of the RS point
Term
 What do double horizontal lines marked on a survery stake mean?
Definition
 "And then"
Term
 How does the grade setter set the fill slope lath on a large fill slope?
Definition
 At 90 degrees from the surveyors stake
Term
 What is the usual tolerance on a fill slope?
Definition
 .5ft
Term
 It is good practice to overbuild a fill slope by how much?
Definition
 6 to 8in
Term
 Which slope angle is the most difficult to cut with a grader?
Definition
 1:1
Term
 When cutting a slope thathas a ditch at toe-of-slope, to what elevation must the initial cut be made?
Definition
Term
 When is it acceptable to work beyond the right-of-way line?
Definition
 When a note in the plans instructs you do to so
Term
 When preparation is complete, what is the first cuts to be made?
Definition
Term
 What do you call an area thats too soft to cover with base rock or asphalt?
Definition
 Unsuitable
Term
 What covers the cost of removing unsuitable material below subgrade during excavation?
Definition
 It is billed as extra work
Term
 What is the most important element for achieveing good soil compaction?
Definition
 The amount of water used
Term
 What does amount of compaction actually measure?
Definition
 The density of soil
Term
 Current method for compaction testing?
Definition
 Nuclear testing
Term
 How will a nuclear test indicate tightly packed soil?
Definition
 A low reading on the gauge
Term
 What is the compaction requirement for most embankments?
Definition
 90%
Term
 Before taking a compaction test on an embankment fill in progress, the grader or compactor should cut down how many inches to a level spot for testing?
Definition
 8in
Term
Definition
 95%
Term
 Which material compacts most easily to 95%?
Definition
 Aggregate
Term
 What equipment is used to roll subgrade on a large job?
Definition
Term
 What would the last choice for rolling a large fill being built?
Definition
 A smooth-drum vibratory roller
Term
 How should the rough subgrade be cut before compacting?
Definition
 .5 to .10 high
Term
 What may need to be done when processing subgrade when processing subgrade with extremely dry soil?
Definition
 The grader may need to turn the soil over several times
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