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← Document results/DEP Box 44/LINCOLN TUNNEL W. 39TH STREET CONTRACT N. LT - 246 MANHATTAN
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Contract LT-246 plans for 39th Street water line replacement

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Engineering drawings and specifications for replacing a high-pressure water line under the Lincoln Tunnel contract.

NYC-WTC_000165271–000165288

Folder label: “LINCOLN TUNNEL W. 39TH STREET CONTRACT N. LT - 246 MANHATTAN

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NYC 9/11 Public Portal Document

3.04 PREPARATION

A. Prior to placing backfill compact existing surface as specified for compaction of each laeyr of backfill.

B. Do not place backfill until the Engineerhas inspected and approved the construction and directed when backfill may be placed .

C. Remove all teraproary structures, sheet pile's, sheeting, bracing and forms and all organic materials and debris of everry nature taking care in the removal of sheet piling, sheeting and temporary supports not to cause movement of adjacent ground or structures or create the danger of a sIide .

3.05 PLACING AND COMPACTION OF BACKFILL

Backfill shall be palced in strict accorance with paragraph B of 4.11.6 of Section 4.11 of the "Department of Highways, City of New York Standard Specifications" as quoted hereinbelow:

"B. Filling shall be carefully deposited and spread by approved methods in uniform layers not exceeding twelve (12) inches depth, extending across the entire width of fill, each layer being thoroughly compacted to the satisfaction of the Engineer before a successive layer is deposited. Compac­ tion equipment shall be approved by the Engineer before it is placed in use and shall be capable of exerting a pres­ sure equivalent to two hundred and fifty (250) to three hundred (300) pounds per inch width of compression roll, or an equivalent pressure if other than smooth wheel or pneumatic tired rollers are permitted.

In areas inaccessible to power rolling or adjacent to con­ struction which may be damaged, other types of approved compaction equipment may be used.

When directed the filling shall be further compacted by wetting as required.

Filling shall be carried up uniformly on all sides of structures and thoroughly tamped."

3.06 RESTORATION OF PAVEMENT

A. Place concrete as shown on the Contract Drawing and allow to cure 72 hours before placing asphalt pavement.

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NYC-WTC_000165282

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NYC-WTC_000165282Source: NYC Law Department, mirrored locally

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