G. GRANULAR MATERIALS (Surfacing, Bedding, Foundation, Base, Fill, Backfill, etc.)
- The Engineer shall run all quality, physical, and chemical tests required by the project specifications to represent the material source and all proctor curves required including AASHTO T-99 for standard density and ASTM D 4253 and ASTM D 4254 for relative density. Results of these tests and locations of samples shall be reported to the City Testing Lab.
- These materials shall be sampled and tested for project specification compliance for gradation at the rate of one sample for every 250 tons or fraction thereof of material delivered to the project site. Samples shall conform to ASTM C 136 for size.
- When required, moisture-density testing shall be done at the rate of one test for each 300 linear feet of pipe or two lane pavement or fraction thereof per day. In cases of short sections or structure backfills, the number of tests is to be increased at the direction of the Engineer, to adequately represent the material in the fill.
