Digging Holes and Trenches Flashcards
What is the first step needed to install the pole
Look at the diameter of the pole to properly set
What is one of the most dangerous job in the construction industry?
Excavation
What size the holes need to be and why
The hole needs to be large enough at least 3 inches in diameter all around to allowed tampering
What does tamper requires the hole to be
The holes need to be slightly larger at the bottom of the hole.
What is the formula used to dig a hole
formula: 10% + 2
What is the difference digging with rock and soil
The depth changes when digging with rock because it depends on the rock holding capacity
while soil its depth never changes
What is the most commonly used tool and why for installing poles
Digger derrick is use because its efficient, productive and save a lot of labor
What is the minimal depth regardless of the length of the pole on soil
its 5 feet
What does the (RAM) stand for and what is use for
(RAM) stand for Rock Auger Method. It’s also referred to as High pressure auger
It used for rock soil
What are the five tools need to dig a hole by hands and there function
long handle Shovel: it’s used to loosen soil
Spoon and jobber: they remove dirt from the hole while digging
the three-tool mentioned above are long handle
(post hole diggers)
Short handle Shovel: Its use to start a hole
Digging Bar: its use on hard rocky and frozen soil
What is the needed step in order to prepare to dig a pole hole
First locate the stakes
second outline a hole around the stake about 6 inches wider than the diameter of the pole butt
third during the excavation prevent spores from falling in to the hole
When operating trenchers, bore machines, or back holes what you need to be aware for
aware of the hazards and operating instructions of each particular piece of equipment prior to using it.
What are trenchers, bore machines, or backhoes for electrical duct banks use for
direct burial cable, for setting manholes and for groundwork
