Labor Equipment and Productivity Flashcards
the amount of work produced; dollar value of work produced
productivity
equation for productivity
units of output / input
Machine used to dig up the ground; mounted on crawlers
Excavator
Machine designed to pick up loose material on the ground and load onto a truck
Loader; Front end loader
All purpose unit with small wheels; can be a dozer, spread material, load or haul material as well
Back Hoe
Vehicle designed to move soil from location to location
Dumb Truck
Term used to describe when the soil is to the rim of the dump truck
Struck Capacity
Term used to describe when the soil is over the rim of the dump truck in a hill like fashion
heaped capacity
Machine designed to scrape the earth
scraper
Machine designed to level the ground
Bull Dozer/Grader
Machine designed to vibrate material and compact it further; unit with a roller
Compactor
Breaks up tough soil
ripper
Quantities for Earthwork include:
- ) Calculation of Earth Volumes
- ) Balancing cut and fill volumes
- ) Planning the most economical material haul routes
How long is a station measured?
every 100 feet
Term used to describing the taking away of earth material
Cut
Term used to describe putting back earth material
fill
3 types of volume
Bank volume, loose volume, compacted volume
How soil has increased between volume states
swell factor
what kind of grid is more accurate?
smaller grid
truck cycle time
Load, Haul, Dump, Return
What characteristic must trucks have in order meet the capacity requirement?
4 to 5 times the capacity of escavator bucket
Three components of Earthwork Pricing
- ) Determine the optimum number of trucks
- )Determine optimum number of dozers
- ) Determine the production rate of the spread
