Excavation and backfilling specifications, 10th Ave Tunnel

NYC 9/11 Public Portal Document

SECTION 02220 EXCAVATION AND BACKFILLING

PART 1 - GENERAL

I 1.01 DESCRIPTION "'•I A. Work Included: Excavation, backfilling, filling, grading and related work as required by the Drawings and as specified herein. B. Related Work Described Elsewhere: i Section 01030 5^ 1. Subsurface conditions. 1j 2. Testing laboratory services. Section 01400 ! 3. Temporary faci1ities and controls Section 01500 ' *

4. Traffic control. Section 01570 5. Sheeting, bracing and underpinning. Section 02150 ’ll 1.02 DEFINITIONS -'-a A. Earth Excavation: The removal of all surface and subsurface materials of 4 whatever nature encountered and not classified as rock as defined below, 6. Rock: a l. Hai*d ledge rock in solid beds or masses in its natural bed, which in,the| opinion of the Engineer, can be removed only by blasting, drilling, wedging or use of pneumatic tools, or by other methods ordinarily used i to remove hard ledge rock. 2. Boulders over one cubic yard in volume. •-.-J C. Removal of materials which can be loosened with a pick or backhoe,'frozen r materials, soft,laminated shale or hardpan, pavements, curbs, and similar materials shall be classified as earth excavation. I D. "Maximum Density": The maximum dry weight in pounds per cubic foot obtained \ in a soil when tested in accordance with ASTM DI557, Method C. E. "Optimum Moisture Content": The percentage of water required to achieve the, A maximum density of the soil when tested in accordance with ASTM 0 1557 ' Method C. : / i / ' i I F. "Percent Density": The density of compacted layer expressed as a percentage of the maximum density of the material. 1.03 SUBMITTALS } A. General: Comply with provisions of Section 01300. I Contract 02220-1 Excavation and 1-02-21064-0-0 Backfilling

NYC-WTC_000165808