Finished floor level

  • Thread starter Hulah
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Homework Statement: Any civil engineer here? Hi, guys. I knew that finished floor level (ffl) was measured to the top of slab....bit, where does it measure from?
Homework Equations: No

From top of slab of floor below it? Or measured from sea level or any established datum?

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JBA

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If you are trying to determine if the slab is level, then a reference level other than the ground needs to be used for the ground floor slab; and, depending upon the required accuracy, this can be done with either a surveyor's theodolite; or, a taut string with an attached bubble level and marked corner located wooden stakes as a reference.
 
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jim mcnamara

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Unfinished, raw wood, no tiles. Please read the link I gave you it says explicitly what to do.
 

jim mcnamara

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@JBA - this is where level == floor, not level in the little bubble in the glass tube sense. British I think.
 

JBA

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- this is where level == floor, not level in the little bubble in the glass tube sense. British I think.
I don't understand that statement, please explain.
 

jim mcnamara

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@JBA sorry. Level has multiple meanings, two of them are:
1. Square to up/down, like using a bubble level to get a picture level on the wall (your answer)
2. Level in the sense of the names for floors, like ground level or basement level (OP's question)

We are talking about the second meaning. And if you read the link you will see what is involved. It is interesting.
 

JBA

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Now I understand.
 

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