Excavation Flashcards
Backhoe
Excavation equipment that has a digging bucket attached to an arm. it is used to dig holes and trenches.
Front-End-Loader
Tractor that has a front mounted bucket, used for moving/digging large volumes of dirt- pushes away from itself
Bobcat
pushes/digs dirt in tight areas
Bulldozer
tractor with a metal blade that is used for pushing large quantities of material during construction
If excavation is not to phase specifications, who absorbs the cost to correct?
excavation contractor
What should you do with topsoil that is on the lot?
Remove and use for final grade
name 3 things that should be considered when excavating a foundation that has excess dirt?
- hauling
- can I raise the elevation to save cost
- sewer line still sloping down
What is a foundation overdid?
3’ foot overdig so that contractors can install foundation, water/sewerlines, waterproofing, and drain tile.
what is the minimum overdid for a full 8’ or 9’ foundation?
3’
what is the overdid for a knee wall foundation?
2’
what is the minimum over dig for a crawl space foundation?
2’
what is the minimum over dig for a slab foundation?
0
Since equipment should not travel on pavement or curbs without protection, what types of things can be used for protection?
rubber mats, rubber tires, planks
Name two ways to protect an excavation from freezing
leave 1’ of dirt from the actual dig
cover with straw and poly
What should be accomplished by the rough grading of a lot?
- swales
- proper drainage away from house
- cut for lead walks and driveways
- evaluate need for dirt
what procedure should be taken in your area in locating utility lines before diving?
concentrator must call miss utility *811 for markings
If utility lines are damaged, who is responsible for them?
whoever called the ticket in for miss utility
Excavation is to be level within ____ plus or minus
1”
When stockpiling fill is necessary, what should be taken into consideration?
regulations for E/S guidelines
Ask developer
How much earth should be left un-excavated for frost protection on a two-day excavation?
1’
What tools/equipment are needed to properly check an excavation?
Lock level, measuring tap(100’), Blueprints, phase specs and checklist
When is a driveway excavated for a house with an integral garage?
excavation
T/F: all ground vegetation is to be removed from the interior of basement and garage areas
TRUE
List 3 possible solutions for resolving rock problems when excavating a foundation
Blasting rock
hammer hoe
raise house
When must all debris be removed from around the foundation over dig?
before back fill
why should excess fill be removed from the lot during excavation?
To insure that their are no hazards
save money because loader is doing two things at once
Why should snow not be removed until you are ready to excavate?
its an insulator
What is the average cut for the excavation show below:
add all of the corner Topo
divide by four
How many CUBIC YARDS of dirt will be removed from the 25’x50’ excavation shown:
LxWxH(average cut)
divide by 27 (for CUBIC YARDS)
determine the cubic yardage of dirt to be removed for the foundation shown
- add all corner TOPO, then divide by 4= average cut
- Add 3’ over dig to each side
- L(+6’) X W(+6’) X AVG cut. Then, divide by 27 for cubic yards
How many days after a foundation is poured should you wait before backfilling?
7 days
