Gravel names

[repete]

DKMC posted about the names of gravel types in your regions.

In the PNW (to the best of my knowledge), we go by an inch dimension. 5/8" minus is any size gravel that will pass through a 5/8" screen. That would include any fines less than 5/8". 1 1/4" minus is the same, anything that would pass through a 1 1/4" screen.

What would this 5/8- be called in your neck of the woods?

 

[rekees4300]

In Indiana's neck of the woods gravel is called a number that is meaningless.

 

[HawkinsHollow]

In SE TN/NW GA I have heard the 3/4" minus, 1 1/4" minus etc. Which makes total sense. But they also have something called 57's, not sure where they came up with that. And crusher run, which I think is pretty ubiquitous.

 

[dieselcrawler]

I'm employed by an aggregate company, for about 6 months now, and the numbers STILL don't make sense to me... but I'm starting to catch on. I guess my job as an electrician makes it more important that I keep the conveyors running than know what number rock is on it!

57's are about one inch, normally washed. 8's are half inch, washed. 9's are 1/4", washed. Bigger stuff is 4's at about 2", 2's is bigger, about 3.5"... then the RipRap classes, D-rock is the smallest, at about 4-6", then C-rock, B-rock in the middle with A-rock being boulders 24"- up.

 

[/pine]

Obviously there are regional colloquial terms that often have no real reference to the size of the aggregate...

Technically most quarries/rock crushers reference their gravel terms/sizes by the last name/size of the sieve screens installed on the crusher...

On a side note...when the last sieve is standard 1.5"...everything that passes through is called "crusher run"

 

[dodge man]

In Illinois it also goes by random numbers which were assigned by our DOT years ago. For example CA6 is gravel with fines. The CA stands for course aggregate. CA7 is the same as CA6 but no fines. Then you get into the FA, which if fine aggregate, more or less different kinds of sand.

 

[Alan W.]

This is what the local quarry calls theirs.

 

[BravoXray]

In Indiana's neck of the woods gravel is called a number that is meaningless.

You mean #53s or #73s?

 

[Cougsfan]

Our area uses the same definition as the ops, which makes a lot more sense and is more easily understood that cryptic #10, #57, and so on used in other parts of the country. But even at that I find one supplier's 5/8 minus can be totally different stuff than another's. Both may pass nothing larger than 5/8 inch across a grading screen, but both the size and shape distribution of different sources for 5/8 minus can vary drastically. For driveways and I much prefer flake-ish shaped crushed rocks versus more roundish crushed rock as they don't sink into the under lying soil as easily.

 

[Spike56]

For me, it is mind-boggling to figure out. There are many different quarries and grades + pet names depending on who hauls. Add to that, the rock can have (depending on where it is mined) different binding materials included from sand to clay to whatever. Luckily, a guy I use a lot is a few miles down the road and stockpiles some material I can touchy-feely before buying. Otherwise, it is somewhat of a crap shoot. The largest mine, especially for driveway material is a LONG way off and they do not allow people to drive in and look. It is commercial only and even driving close to the place is hazardous to vehicles finish with rock everywhere on the roads.
I envy anyone who lives in an area they can figure it out !