CM 2113 LATEST EXAMS TEST PAPER QUESTIONS
AND ANSWERS SURE A+
✔✔elevating scrapers - ✔✔not designed to be push loaders, use a ladder to lift material
into the bowl. However the ladder is dead weight during the haul cycle. Used for utility
work, good in small quantity situations. No pusher is required. They cannot handle rocky
materia
✔✔auger scraper - ✔✔self loading scrapers that use a rotating auger to lift material into
the bowl. Available in single and tandem configurations. More costly to own and
operate.
✔✔push-loaded wheel scraper - ✔✔has potential for high travel speeds on favorable
roads
✔✔push-pull tandem powered scrapers - ✔✔all wheel drive scrapers equipped with
coupling devices that enable 2 scrapers to assist eachother in loading
✔✔loading - ✔✔tandem powered scrapers sometimes require help
✔✔single powered axle pusher-loader wheel-tractor scrapers - ✔✔suited for jobs where
the haul-road rolling resistance is low and grades are minimal. They become
, uneconomical when haul grades are greater than 5% and return grades are greater
than 12%
✔✔self-loading scrapers - ✔✔Heavier and more costly than conventional scrapers, can
be economical in isolated work and for stripping materials
✔✔the capacity of a scraper - ✔✔Expressed in bank cubic yards, approximated by
multiplying the loose volume in the bowl by an appropriate swell factor
✔✔backtrack loading - ✔✔Most common. It permits all scrapers to load in the same
area. However, the slowest bc of the addition pusher travel distance
✔✔scraper fixed cycle time - ✔✔1. Spot time
2. Load time
3. Maneuver and dump time
✔✔crawler dozer - ✔✔-good for short distance
-can handle tight soil
-can push large blade loads
-exerts low ground bearing pressure
-works on almost any terrain
-can work on soft ground and mud slick surfaces
✔✔crawler dozer - ✔✔(tracklaying) - the work horses of the construction industry
✔✔How to classify trucks - ✔✔1. Size and engine type (gas, diesel)
2. Number of gears
3. Drive type (2 wheel, 4 wheel)
4. Number of wheels and axles
5. Method of dumping
6. Material being hauled
7. Holding capacity
✔✔trucks - ✔✔distance is a major factor in selecting haul units
✔✔dozers - ✔✔they are designed to provide high drawbar pull and tractive effort.
✔✔crawler dozer - ✔✔exerts low ground-bearing pressure adding to its versaility
✔✔Dozers - ✔✔equipped with a blade are standard equipment for excavating
✔✔Dozers - ✔✔equipped with special clearing blades are used for land clearing
AND ANSWERS SURE A+
✔✔elevating scrapers - ✔✔not designed to be push loaders, use a ladder to lift material
into the bowl. However the ladder is dead weight during the haul cycle. Used for utility
work, good in small quantity situations. No pusher is required. They cannot handle rocky
materia
✔✔auger scraper - ✔✔self loading scrapers that use a rotating auger to lift material into
the bowl. Available in single and tandem configurations. More costly to own and
operate.
✔✔push-loaded wheel scraper - ✔✔has potential for high travel speeds on favorable
roads
✔✔push-pull tandem powered scrapers - ✔✔all wheel drive scrapers equipped with
coupling devices that enable 2 scrapers to assist eachother in loading
✔✔loading - ✔✔tandem powered scrapers sometimes require help
✔✔single powered axle pusher-loader wheel-tractor scrapers - ✔✔suited for jobs where
the haul-road rolling resistance is low and grades are minimal. They become
, uneconomical when haul grades are greater than 5% and return grades are greater
than 12%
✔✔self-loading scrapers - ✔✔Heavier and more costly than conventional scrapers, can
be economical in isolated work and for stripping materials
✔✔the capacity of a scraper - ✔✔Expressed in bank cubic yards, approximated by
multiplying the loose volume in the bowl by an appropriate swell factor
✔✔backtrack loading - ✔✔Most common. It permits all scrapers to load in the same
area. However, the slowest bc of the addition pusher travel distance
✔✔scraper fixed cycle time - ✔✔1. Spot time
2. Load time
3. Maneuver and dump time
✔✔crawler dozer - ✔✔-good for short distance
-can handle tight soil
-can push large blade loads
-exerts low ground bearing pressure
-works on almost any terrain
-can work on soft ground and mud slick surfaces
✔✔crawler dozer - ✔✔(tracklaying) - the work horses of the construction industry
✔✔How to classify trucks - ✔✔1. Size and engine type (gas, diesel)
2. Number of gears
3. Drive type (2 wheel, 4 wheel)
4. Number of wheels and axles
5. Method of dumping
6. Material being hauled
7. Holding capacity
✔✔trucks - ✔✔distance is a major factor in selecting haul units
✔✔dozers - ✔✔they are designed to provide high drawbar pull and tractive effort.
✔✔crawler dozer - ✔✔exerts low ground-bearing pressure adding to its versaility
✔✔Dozers - ✔✔equipped with a blade are standard equipment for excavating
✔✔Dozers - ✔✔equipped with special clearing blades are used for land clearing
