What is over excavation?

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The short answer...

excavation gets you to grade, over-excavation gets you below grade and is based on engineering requirements.

The longer answer...

In grading work there may be times when plans specify to cut or excavate to a particular elevation. There are other times when an over-excavation will be specified to remove unsuitable soils to a certain depth. So lets say that you are at a site where the native elevation is at 460' and plans call for finished grade at an elevation of 450' with an over-excavation of 5.' What this means is that you would excavate down 10' (from 460' to 450') and then over-excavate down an additional 5' (from 450' to 445')

At that point the bottom of the over-excavated location will usually have x number of inches to be scarified, moisture conditioned and compacted to a certain percentage of the maximum dry density obtained in laboratory testing. The removed soil (aka: over-ex or OX) will then be replaced with suitable material in lifts of a specified thickness with an optimum moisture content and compacted to a particular percentage of the maximum dry density.
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What is excavation?

Excavation is the loosening and removal of soil from a certainarea... ------------------------- digging a hole is excavation.

What is an excavator?

it is a machine used to dig the earth, it can also be used to lift thing such as a crane would, but only as high as the boom of the excavator will rise and the weight is depen

What is excavated?

Excavated means, like, how do they take it out, or how do they extract it? _. Excavated means to like dig up something or find something and Get it by digging it up.

What are the root cause of Diesel Engine over heating in hydraulic excavator?

Low coolant, Thermostat, But mostly with these machines operating a lot with dirt and sand. They need to be blown out regularly because of the areas they work in and the press

What do excavators do?

They dig things such as foundations, trenches, and grub out for roads and drive ways.

How did they excavate Pompeii?

Forelli used many excavations of Pompeii such as replacing right-left into top-down as it caused less damage.

What is the meaning of excavation?

excavation - the act of digging The removal of soil, dirt, and rocks in order to uncover something. Such as excavating an archaeological site. Or excavating a plot of land in

What are the purpose of excavator?

The purpose of an excavator is to move the earth, like you want to digup some earth or move earth from one place to another.
In Excavators

What is a excavator?

EXCAVATOR are heavy construction equipment consisting of a boom, stick, bucket and cab on a rotating platform (known as the "house"). The house sits atop an undercarriage wit
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What is excavation and excavation safety?

Basically, excavation is to dig a hole. Excavation safety is toensure that anyone working in the hole is safe from a cave-in ofthe sides, or any other accident whilst in the h