Is there a Standard for "No. 2 Crusher Runö?
Is there a Standard for "No. 2 Crusher Runö?
(OP)
I'm working on a job here and for the foundation of our basin we have specified "95% compacted No. 2 Crusher Run"
The customers QC department has come back and want some kind of spec. or ASTM # that actually specifies WHAT No. 2 Crusher Run is...what standards it has to meet to actually be No. 2 crusher run.
Does anyone know of a standard or spec. that would define what they want to know?
Thanks a lot
Ken





RE: Is there a Standard for "No. 2 Crusher Runö?
RE: Is there a Standard for "No. 2 Crusher Runö?
You need to spec a graded crushed stone. Check out your Highway Department specifications and choose a crushed stone.
RE: Is there a Standard for "No. 2 Crusher Runö?
However, if you are using it for base material under structures, you may want to evaluate the properties of the material to see if it will meet your needs.
RE: Is there a Standard for "No. 2 Crusher Runö?
But I disagree with Terrasouth, a graded aggregate is not always needed, and if you are talking about the bottom of an unlined stormwater management basin, the material is almost never spec'd - unless filtration is required, then it must be.
Typically, I write "suitable fill" and "unsuitable fill" into specs. This material applies to areas where structural characteristics and contact with U/G utilities are not of concern...like the bottom of a basin, for example.
Suitable fill is simply dirt, with some general qualifiers: 0% over 2" stone within 24" of pipes, 0% over 8" stone, 20% max 1/2" stone, no topsoil, organic matter, construction debris, cinders or frozen material. The ability to meet a compaction spec is sometimes required, which pretty much leaves out all the above anyway.
Unsuitable fill is purposely not defined. It simply allows for the A/E inspector to reject fill; presumably for not meeting Suitable Fill criteria, but the reason is not specified or limited. Replacement is by Suitable Fill.
Cvg has the right idea, but (again, because of the use), I would not want to mess around with a sample, unless I had a reason to think what I would get is Unsuitable. And I doubt the quarry has test reports on bank run, but maybe they do. I've just never seen any.
Remember: The Chinese ideogram for “crisis” is comprised of the characters for “danger” and “opportunity.”
-Steve
RE: Is there a Standard for "No. 2 Crusher Runö?
RE: Is there a Standard for "No. 2 Crusher Runö?
any advise would be helpful
RE: Is there a Standard for "No. 2 Crusher Runö?