Ariel Reyes
Civil/Environmental
Hi, I'd like to know whether G1 gravel refers to a particular size or gradation for gravel. Is it suitable for gravel paving and surfacing? Does it relate to ASTM D2940 (see attachment)? Thanks
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G1 GRAVEL
- Thread starter Ariel Reyes
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The base material appears to be a well graded mix; it would be a matter of plotting it and comparing it to a Fuller or Weymouth curve. The sub-base is less intense. An aggregate mix does not have to meet anything other than what is spec'd; whether it works is another issue. Many jurisdictions have a standard Granular 'A' or 'A' Base and these often have a similar gradation. Maybe someone on the forum can advise if there is a 'legal' or 'standard' Granular 'A'. I've only seen the gradation spec'd and have never compared the specs for it.
Dik
Dik
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Ariel Reyes
Civil/Environmental
Thanks Dik, but is there an official, technical standard showing aggregate/gravel gradation for G1 gravel?
ACtrafficengr
Civil/Environmental
Try looking in the standard specifications of the department of transportation for the state or other jurisdiction where it would be used.
It could be like "Item 4" in parts of New York, a generic term for subbase gravel still in use, long after the relevant specification has been renamed. If that's the case, use the current spec. Since there is no spec for "Item 4," it could be pretty much anything that looks like subbase at first glance.
It could be like "Item 4" in parts of New York, a generic term for subbase gravel still in use, long after the relevant specification has been renamed. If that's the case, use the current spec. Since there is no spec for "Item 4," it could be pretty much anything that looks like subbase at first glance.
bridgebuster
Active member
AC - I have the spec for Item 4 if you need it.
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Ariel Reyes
Civil/Environmental
AC, can I take a look at it? Does the spec reference technical standards like ASTM or AASHTO?
bridgebuster
Active member
OP - The spec I have for Item 4 is about 60 years old. I can post a copy when I get home.
bridgebuster
Active member
Material Spec for Item 4 (1962)
ACtrafficengr
Civil/Environmental
Thanks, B.B.!
My glass has a v/c ratio of 0.5
Maybe the tyranny of Murphy is the penalty for hubris. -
My glass has a v/c ratio of 0.5
Maybe the tyranny of Murphy is the penalty for hubris. -
bridgebuster
Active member
No problem AC. The book has helped me out a few times.
jimstructures
Structural
bridgebuster:
Could you give us the book title, author & publisher and the copyright date, plus any other information you wish to share about it.
Thank for the post.
Jim
Could you give us the book title, author & publisher and the copyright date, plus any other information you wish to share about it.
Thank for the post.
Jim
bridgebuster
Active member
Jim structures: NYS Department of Public Works Standard Specifications, 1962.
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