Addendums to drawings/specs - Laserfiche WebLink

Home Browse Search

2. Testing Laboratory representative shall be present at the site to establish excavation • limits, and observe and tes structural fill, placement, subgrade improvement or correction, building fill or backfill as it is being accomplished. B. Minimum Densities: Compaction shall meet the requirements of ASTM D698 for densities established by the Standard Proctor Method. Field density tests shall be performed in accordance with ASTM D1556(Sand Cone Method)or ASTM D2922(Nuclear Method, when approved). Densities of at least the following minimum percentage shall be obtained: 1. Subgrade in embankment construction: a. Fill under building areas: 95 percent b. Fill under roads, pavements, and walks(within upper 2 feet): 98 percent c. Fill under roads, pavements, and walks(below upper 2 feet): 95 percent d. Filled under grassed areas: 85 percent 2. Structrural fill for over excavation under foundations: 100 percent 3. Backfill/fill at building foundations: 95 percent 4. Underslab base: a. Granular base under building floor slabs: 100 percent b. Granular base under exterior concrete: 98 percent 5. Backfill at pipe zone(underground utilities): 85 percent 6. Backfill from pipe zone to building subgrade: 98 percent C. If soil analysis or compaction tests indicate that the materials specified have not been furnished, place or compacted in compliance with these specifications, the material shall be removed, replaced, recompacted and retested. The entire cost of this work, including the costs of retests, shall be paid by the contractor. D. Test Frequency: 1. Provide one mechanical or hydrometer analysis test (dependent on whether soil is cohesionless or cohesive)for each class of fill soil specified or fill soil from a given source. 2. Establish Proctor Standard(ASTM D698) (density and moisture content)for each class of fill, backfill, subcut or subgrade fill, structural fill, etc. ADDENDUM#1 1607.001 - ORONO ICE ARENA(CP-2) Page 02200 - 14