|657 RipRap for Tree Protection|
Item 657.02 C&MS
2. Sampling and/or Inspection Requirements:
Furnish stone consisting of sandstone, limestone, or other natural rock with a minimum 30% single slab loss and a maximum 20% cumulative loss after testing to ASTM D5240.
Use an 8 slab test sample.
The Department may waive testing when the stone source has a known durability history. Contact the OMM Aggregate Section for sampling instruction.
Furnish embankment according to Item 203. Unless otherwise specified, use 4" (100 mm) pipe conforming to 603 Type E conduits.
3. Methods of Tests:
(OMM Aggregate Section)