Module 5 Resources CM 2113
Dozer - answer tractor unit that has a blade attachment in the front used for pushing dirt
from one location to another
do dozers have buckets? - answer no buckets so no set volume capacity
What are the two types of dozers - answer crawler and wheel
crawler also known as – answer tracklaying
crawler dozers - answer work horses of the construction industry.
what conditions can a crawler dozer work in - answerdiverse
what slope degree can a crawler dozer work in - answer45%
Wheel type dozers have the advantage of greater - answerspeed
types of blades used by dozers - answerangled blades, semi-u blades, cushion blades,
blades for land clearing or push blades or blocks used for assisting scrapers to load,
rear mounted tools, such as ripppers
blades can be - answeradjusted
how to estimate productivity - answer1. ideal production
2. grade correction
3. material-weight correction
4. operator skill, technology
5. material-type
6.operating technique
7. visibility
8. effecicincy factor
9 calculate production
10. material conversion if required
11. determine total operating hours required
ideal prodcution values are based on the following conditions - answer100% efficiency
power-shift machines
coefficient of tractions
coefficient of traction - answergreater than or equal to .5 crawler machines
greater than or equal to .4 wheel machines
, ideal production values are based on a soil density of - answer2,300lb/lcy
material weight correct= - answer2,300 lcy/ actual material unit weight
ideal production is based on a ________ working hour - answer60
efficiency factor = - answeractual working minutes per / 60 working hour
what is the distance for a dozer for short? - answerless than 300 feet
what is the distance for a scraper - answer3000 feet
conventional scrapers - answerpush loaded and are single enginer scrapers
conventional scrapers has potential for high travel - answerspeeds
conventional scrapers become uneconomical when - answerhaul grades become
greater than 5% and the return grads are more than 12%
elevating scrapers are completely - answerself contained loading and hauling scrapers
scrapers are good for what distance haul - answershort in favorable material
cost of elevating scraper initially and to operate is more expensive or less expensive -
answermore expensive
tandem powered scrapers - answerdual engine wheeled scrapers giving it more power
for volume or grade resistance
owning and operating costs for tandem powered scrapers are - answer25% higher than
single engine scrapers
push-pull scrapers can work - answeras a team or operate individually with a pusher.
does a push-pull scraper have 4 wheel drive - answeryes
back-track loading - answerpusher tractor will push a loading scraper in the line and
when complete, will go back and line up in another lane to push the next loading
scraper
chain loading - answerpusher tractor will push one loading scraper and then
immediately enter the other lane and push a second loading scraper
shuttle loading - answerpusher tractor will go one direction to assist the first loading
scraper and then return the opposite direction to assist the second loadin scraper
Dozer - answer tractor unit that has a blade attachment in the front used for pushing dirt
from one location to another
do dozers have buckets? - answer no buckets so no set volume capacity
What are the two types of dozers - answer crawler and wheel
crawler also known as – answer tracklaying
crawler dozers - answer work horses of the construction industry.
what conditions can a crawler dozer work in - answerdiverse
what slope degree can a crawler dozer work in - answer45%
Wheel type dozers have the advantage of greater - answerspeed
types of blades used by dozers - answerangled blades, semi-u blades, cushion blades,
blades for land clearing or push blades or blocks used for assisting scrapers to load,
rear mounted tools, such as ripppers
blades can be - answeradjusted
how to estimate productivity - answer1. ideal production
2. grade correction
3. material-weight correction
4. operator skill, technology
5. material-type
6.operating technique
7. visibility
8. effecicincy factor
9 calculate production
10. material conversion if required
11. determine total operating hours required
ideal prodcution values are based on the following conditions - answer100% efficiency
power-shift machines
coefficient of tractions
coefficient of traction - answergreater than or equal to .5 crawler machines
greater than or equal to .4 wheel machines
, ideal production values are based on a soil density of - answer2,300lb/lcy
material weight correct= - answer2,300 lcy/ actual material unit weight
ideal production is based on a ________ working hour - answer60
efficiency factor = - answeractual working minutes per / 60 working hour
what is the distance for a dozer for short? - answerless than 300 feet
what is the distance for a scraper - answer3000 feet
conventional scrapers - answerpush loaded and are single enginer scrapers
conventional scrapers has potential for high travel - answerspeeds
conventional scrapers become uneconomical when - answerhaul grades become
greater than 5% and the return grads are more than 12%
elevating scrapers are completely - answerself contained loading and hauling scrapers
scrapers are good for what distance haul - answershort in favorable material
cost of elevating scraper initially and to operate is more expensive or less expensive -
answermore expensive
tandem powered scrapers - answerdual engine wheeled scrapers giving it more power
for volume or grade resistance
owning and operating costs for tandem powered scrapers are - answer25% higher than
single engine scrapers
push-pull scrapers can work - answeras a team or operate individually with a pusher.
does a push-pull scraper have 4 wheel drive - answeryes
back-track loading - answerpusher tractor will push a loading scraper in the line and
when complete, will go back and line up in another lane to push the next loading
scraper
chain loading - answerpusher tractor will push one loading scraper and then
immediately enter the other lane and push a second loading scraper
shuttle loading - answerpusher tractor will go one direction to assist the first loading
scraper and then return the opposite direction to assist the second loadin scraper
