Crushed Stone
We deliver every grade1b Stone
1B stone is small, clean crushed rock, roughly 3/8 inch to about 1/2 inch across. The pieces are angular, with sharp edges from a crusher and a screen. There's no dust or fines mixed in, so water drops straight through the pile.
The 1B is a size code from PennDOT Publication 408, so you'll hear it most in Pennsylvania and nearby states. It's the state's own numbering, not an AASHTO M43 number. The code tells you how big the pieces are and says nothing about what kind of rock is in the pile — limestone, granite, or trap rock can all get sold as 1B if they hit the sieve numbers.
What people use it for
How to choose within 1b stone
Compaction over drainage
Angular pieces lock together. Pick a smaller size when you need the surface to stay put under a driveway or path.
Drainage over compaction
The larger the piece, the more room for water to move through. #1 or #57 for a French drain; #8 or smaller reads as loose gravel.
Washed vs. unwashed
Washed has the dust rinsed out, so it drains faster and won't track into the house. Unwashed compacts harder — better under a paver base.
Other crushed stone families
Chip Stone
We deliverChip stone is small crushed rock, roughly 1/4 inch to 1/2 inch across, with the dust screened out.
57 Stone
We deliver#57 stone is crushed rock screened between about 1 inch and 1/4 inch, with the dust washed out.
4 Stone
We deliver#4 stone is crushed rock screened between about 1 1/2 inches and 3/4 inch.
8 Stone
We deliver#8 stone is crushed rock screened between about 3/8 inch and 1/8 inch, with the fines washed out.
67 Stone
We deliver#67 stone is crushed rock screened between about 3/4 inch and 1/4 inch, with most of the dust washed out.
Crushed Stone 3 Stone
We deliver#3 stone is crushed rock in pieces roughly 1 to 2 inches across.
10 Stone
We deliver#10 stone is crushed rock screened down to dust and small pieces smaller than about 3/8 inch.
1 Stone
We deliver#1 stone is large crushed rock, roughly 2 to 4 inches across.
89 Stone
We deliver#89 stone is crushed rock screened between about 3/8 inch and the size of a coarse sand grain.
9 Stone
We deliver#9 stone is crushed rock screened to a 3/8 inch top size, with pieces running down to about the size of a grain of rice.
5 Stone
We deliver#5 stone is crushed rock screened between about 1 inch and 1/2 inch, with the fines washed out.
Crushed Stone 2 Stone
We deliver#2 stone is crushed rock screened between about 2 1/2 inches and 1 1/2 inches, with the dust washed out.