What is 2A stone?
2A stone: Also known as 2A crushed stone or 2A modified stone, this material is a mixture of crushed stone and coarse stone dust and derives its name from its 2-inch top size. Builders typically use 2A stone in projects where drainage and stability are primary concerns. Examples include use as a sub-base for roadways, walking paths and driveways.
What is PennDOT 2A modified stone?
2A modified has a top rock size of 1.5 to 2 inches. This aggregate also contains fine stones. PennDOT 2A stone is primarily a clean material. It will compact for stability, and it provides adequate drainage. Because of its size, 2A modified stone is best suited for surfaces and areas requiring compaction.
What is 2A modified rock used for?
Common Uses: Blue 3/4" modified is a good material to top dress driveways or stone parking lots. Once compacted, 2A Modified provides a great finish surface or as an area ready to accept blacktop. 2A Modified is great for areas where compaction is desired such as in parking lots, roads or driveways. 2A has a top rock size of 1.5 inches.
What is the difference between 2A modified and 3A modified?
2A Modified is great for areas where compaction is desired such as in parking lots, roads or driveways. 2A has a top rock size of 1.5 inches. 3A Modified is great for areas with a deep fill (ie more the 6") where compaction is desired such as in parking lots, roads or driveways. 3A has a top rock size of 2 inches.
What is the difference between 2A and 2A modified stone?
municipalities and quarries. Modified is usually a 2A aggregate that has been “modified” with the addition of another aggregate, typically additional fine material to make a more well-graded aggregate.
What is the difference between 2A and 2B stone?
2A MODIFIED is typically used when a solid compacted base is needed. Uses include driveways and under sheds. 2B STONE is used where drainage is needed. Uses include perforated pipe, placement under concrete to prevent frost heaving and cracking concrete.
What does 2A modified stone look like?
0:000:462A Modified Stone - YouTubeYouTubeStart of suggested clipEnd of suggested clipThis is used on paver bases you'll see the the dust in between air when you tamp it down itMoreThis is used on paver bases you'll see the the dust in between air when you tamp it down it compresses. And don't get it confused with 2b which is a clean rock it just rocks.
What is 2B modified stone used for?
2B Lime Stone - It is most commonly used in driveways, for french drains or to back fill a wall stone installation.
What size stone is 2A?
1.5 to 2 inches2A Stone Size 2A modified has a top rock size of 1.5 to 2 inches. This aggregate also contains fine stones. PennDOT 2A stone is primarily a clean material. It will compact for stability, and it provides adequate drainage.
How much 2A stone do I need?
Calculate 2A LimestoneCoverage (Square feet)400sq ftVolume (Cubic yards)2.5cu ydEstimated amount (Pounds)5,951lbEstimated amount (Tons)2.98tonAmount +15% compression3.42ton2 more rows
How much is a ton of 2A stone?
$35.00$35.00. Price is per approximate ton.
What is the best stone for a driveway?
Crushed stone is the go-to for durability and low-cost driveways and will probably be your best option. . If you're making a gravel driveway for an area with tons of traffic, this is your old reliable.
What is the size of 2B stone?
3/4"2B is a Clean Crushed stone with an average size of 3/4". Used for drainage work and driveways when trying to bridge over wet soil areas.
What size is 1a stone?
AASHTO #1 Stone Size Aashto #1 has a top rock size of 2 to 4-inches. While it is too bulky to be effectively used for surfacing, this grade 1 aggregate of crushed stone is an excellent material for subgrade stabilization.
What size is 1B stone?
1B Pea Gravel is the smallest grade of stone, with an approximate diameter of 1/4″ – 1/2″. It is most commonly used for high-traffic areas such as pathways, playgrounds, and fire pit areas. It can also be used for other applications like french drains and pipe bedding.
What size is 3B stone?
Description. 3B River Gravel is a naturally sized and shaped stone that is typically found near bodies of water. It is about the size of a plum, with an average diameter of 1.5″ – 3″.
What is the size of 2B stone?
3/4"2B is a Clean Crushed stone with an average size of 3/4". Used for drainage work and driveways when trying to bridge over wet soil areas.
What is 2B gravel?
2B River Gravel is a popular gradation of stone that has a wide variety of uses, including french drains, concrete paving, backfilling, etc. Average diameter is 1/2″ to 1.5″. Sold per ton (1.4 CY) 2B River Gravel quantity - +
What is 2 B gravel?
2B Gravel is used for French Drains, backfilling, landscaping and as a base layer underneath concrete. This product can be used as a base material or as a decorative stone in landscaping instead of mulch. This product can be used as a base material or as a decorative stone in landscaping instead of mulch.
Does 2B stone compact?
Uses include: French drain construction, also a component in permeable paver construction. Drainage stone behind retaining walls and under sheds. Driveway or walkway stone, though it does not compact.
Modified Stone is Not Gravel
Real gravel occurs in nature and is composed of small stones, often burnished round by the action of water. Stones are commercially sorted and can be purchased in several sizes, from the small pea gravel in the bottom of your fish tank to the more substantial stones added to cement and sand to form concrete.
Manufacture
Modified stone, on the other hand, begins as big rocks and boulders. Rocks are mechanically crushed and marketed in a number of sizes, numbered from small to large. Pieces range in size from quarter-sized to nearly coarse sand, called "fines." The size most in demand for residential use is 2, often 2A.
Varieties
Aggregate rock, river rock and shale are among several modified stone products available for residential use. Some suppliers offer reddish-toned, bluish or dark-toned mixtures as well. Most stone is medium gray in appearance. Crushed white quartz and marble are marketed in small quantities as flower-bed edging.
Uses
Builders use modified stone to create a level surface and drainage bed for barns, sheds and other utility buildings erected without foundations. Stone also provides a firm foundation for patios paved with brick or cement blocks. For parking areas, landing pads, walkways and driveways, number 2A stone predominates.
What is 2A modified?
2A Modified is great for areas where compaction is desired such as in parking lots, roads or driveways. 2A has a top rock size of 1.5 inches.
What is 2RC mod?
2RC is an open spec modifed that varies based upon current production. Our 2RC tends to be brown and while normally sized 3/4" and below the spec allows up to about a 2" size.
What is 2A stone?
2A stone: Also known as 2A crushed stone or 2A modified stone, this material is a mixture of crushed stone and coarse stone dust and derives its name from its 2-inch top size. Builders typically use 2A stone in projects where drainage and stability are primary concerns.
Where Can I Find 2A Stone Near Me?
We deliver to companies within 30 miles of our facility (40 miles for aggregates), which encompasses Carlisle, Harrisburg and Mechanicsburg and the surrounding areas.
What is a 2 inch top?
Material has a 2 inch top size and is a mix of coarse stone and fine material. Fines in material will include dirt, silt, loam, or clay. Great compaction and is used under slabs, road base, and fill. Primarily a dirty material that will compact and does not drain. Learn More.
What is PA2A stone?
Below is a general description of stone sizes that are typically available from the quarries. PA2A is a mixture of coarse stone and crushed stone dust. It is used as a road base or an under-slab fill. It will drain and has a structural coefficient, making it ideal when stability and drainage are a concern.
What is 2RC2A modified?
2RC/2A Modified is a mixture of coarse stone and fine material. It is used as a road base and fill material. The fines in this material will be an earthen fine (dirt, silt, loam, clay). This material does not drain readily and has no structural coefficient. It is used where compaction and stability are a concern. 2RC/ 2A Modified is primarily a dirty material.
What is anti-skid material?
This material is the primary skid deterrent used by many state DOT’s and townships throughout the winter months. Several types and classifications of anti-skid are in use in Pennsylvania; utilizing a mixture of sands, limestone’s, slag, and cinders. The material will not compact because it is meant to be applied in a loose condition. Most anti-skids have a 3/8 to 1/2 inch topsize, and taper off to fine, dust-sized particles.
What is AASHTO #3?
AASHTO #3 stone is similar to AASHTO #1 but has a 3-inch topsize. It is also a bulky material but is somewhat easier to handle than the #1’s. It is used primarily in drainage situations. It is a clean material.
Is 1B a good material for pipe?
It is also used as an anti-skid material in some situations. In some cases, 1B’s can be used as a bedding material for pipe.
Is AASHTO #1 a good stone?
AASHTO #1’s are too bulky to be used as a surfacing material, however, it makes an excellent stone for subgrade stabilization. Applications for this stone include construction entrances and ditch lining. It will not compact, and is a clean material.
