ITEM 11662.9901 M - NEW CON EDISON FACILITIES

ITEM 11662.9901 M - NEW CON EDISON FACILITIES

DESCRIPTION

This work shall consist of furnishing and installing NEW CON EDISON FACILITIES in accordance with the contract documents and as directed by the Engineer.

MATERIALS

All Structural Steel including Rods shall be A.S.T.M. A709M and shall conform to the requirements of Subsection 715-01 of the NYSDOT Standard Specifications.

All Bolts shall conform to A.S.T.M. A325M, Type 1 and shall conform to the requirements of Subsection 715-14 of the NYSDOT Standard Specifications.

All Nuts shall be A.S.T.M. A563M or A194M and conform to the requirements of Subsection 715-14 of the NYSDOT Standard Specifications.

All Washers shall be A.S.T.M. F436M and conform to the requirements of Subsection 715-14 of the NYSDOT Standard Specifications.

Bar reinforcement shall be epoxy-coated and meet the requirements of Subsection 709-04, Grade 420 of the NYSDOT Standard Specifications.

Paint for structural steel, rods, bolts, nuts and washers shall conform to Subsection 572-2 of the NYSDOT Standard Specifications and shall match the color of the paint applied to the steel bridge girders.

Dimensions for lumber and timber required for general construction purposes shall be standard dressed sizes.

Materials furnished by Con Edison to the site shall consist of the following:

CONDUITS AND DUCTS:

1. Molded plastic plugs for unoccupied ducts as per Con Edison drawing EO-10864D.

2. 6mm polypropylene pulling rope.

3. Concrete conduits.

4. All steel conduits as per Con Edison specification EO -9000, in double random length (15.24 meters maximum).

5. Welding sleeves for pipe connections on steel conduits system as per Con Edison EO-6947-D.

6. Concrete Adapters as per EO-9947-D.

Page 1 of 7

01/20/2006

ITEM 11662.9901 M - NEW CON EDISON FACILITIES

7. Steel protection plates (as required).

8. Expansion joint as per EO-12171-D.

MANHOLES AND BOXES

1. Where precast concrete type S boxes are specified on the plans, the entire precast box structure (EO-9507-B) shall be furnished by Con Edison.

2. Where cast-in-place type S box, DB-6 box, type V13 vault, M11-6 and M-14 manhole structures are specified on the plans, the roof slabs (EO-13333-C, EO12912, EO-13526-C and EO-6336-B) shall be precast concrete and shall be furnished by Con Edison.

3. Con Edison shall furnish miscellaneous steel and iron castings consisting of manhole/box frames and covers, floor sump gratings and pulling eyes.

The class of concrete and structural steel used for manhole/box construction and related structures shall be as specified on drawing EO-1008. Waterstops shall be provided at all joints when not monolithically poured. Structural steel shall also conform to the requirements of A.S.T.M. A709M. Con Edison reserves the right to make minor changes to the design of structures.

Materials furnished by the Contractor shall include:

WOOD BLOCK SUPPORTS

1. Wood block supports shall conform to the latest edition of "Grading Rules for Southern Pine Lumber" by the Southern Pine Inspection Bureau or "Grading and Dressing Rules for Douglas Fir, West Coast Hemlock, Sitka Spruce, Western Red Cedar Lumber" by the West Coast Lumber Inspection Bureau and shall be of the following grade:

? Dense Structural 65, fs=13.8 Mpa Southern Yellow Pine.

? Dense Construction Planks fs=12.4 Mpa Douglas Fir.

MISCELLANEOUS

1. The Contractor shall furnish concrete and epoxy-coated reinforcing steel for all cast-in-place manholes and chimneys, grout/mortar, brick and inserts.

2. All materials used to support, protect and maintain existing electric cables and conduit during manhole/box installation shall be supplied by the Contractor and shall be as approved by the Engineer in consultation with Con Edison.

Page 2 of 7

01/20/2006

ITEM 11662.9901 M - NEW CON EDISON FACILITIES

3. Any material which is not supplied by Con Edison to install the conduits and manholes/boxes shall be supplied by the Contractor.

CONSTRUCTION DETAILS

The Contractor shall notify Con Edison of the installation schedule at least (45) days before materials are required on the site. In the event the Contractor fails to acquire the materials from Con Edison on time, the State shall not be liable for the Contractor's loss due to any construction delays of the Con Edison facilities.

All materials provided by Con Edison shall be delivered to the Contractor at the construction site and unloaded by the Contractor. It shall be the Contractor's responsibility to inspect the materials immediately upon delivery. If the Contractor fails to inspect the material or accepts the material and the material is damaged, lost or deemed inappropriate, such material shall be replaced at no expense to the State or Con Edison. In addition, all material lost, or damaged after the Contractor's inspection has been completed, shall be replaced at no additional expense to the State or Con Edison. The Contractor shall unload all materials in such a manner as to prevent damage and shall use appropriate devices to protect pipe coatings, etc. while handling. The Contractor shall provide suitable protection from theft or damage for all materials at the construction site. Excess materials furnished by Con Edison and not used in the Work shall be returned by the Contractor to the designated Con Edison storage yard for off-loading by Con Edison personnel.

Work included under this item shall consist of the following:

? Install Con Edison provided steel conduits where shown in the plans.

? Install Con Edison provided concrete conduits where shown on plans.

? Install Con Edison provided duct plugs at the end of unoccupied conduits.

? Remove and dispose of existing conduits in the bridge construction area.

? Excavate and backfill and perform associated work including work as required to break out the conduit to make entries into the existing manholes.

? Install Con Edison provided 6mm pulling rope in each conduit terminating at each end of the conduits.

? Install new manholes and remove existing manholes & boxes as shown on the plans.

? Install wood block supports and bolts

INSTALLATION

Page 3 of 7

01/20/2006

ITEM 11662.9901 M - NEW CON EDISON FACILITIES

Wood block supports assembly shall be constructed and installed by the Contractor as per Con Edison drawing EO-9217-C.

Manhole/Box Construction (EO-1114-C, EO-9507-B, EO-12917-B, EO-14819-C, EO-13331-B, EO-13334-B, EO-2468-B, EO-10582-A and EO-1090-B):

1. The Contractor shall field-construct floor and walls of manhole/box around existing electric cables using Con Edison provided field-split precast conduit bell ends (EO9799-D, EO-1042) embedded as wall sleeves (and Con Edison provided adapters from existing duct material to precast where appropriate). Provide for new duct entrances (EO-9508-C, EO-2603) as required. Face-off and seal ducts per EO-1100; install Con Edison provided miscellaneous metals (EO-1898-G, EO-2086-C, EO-7841-C, EO1841-C, EO-10582-A, EO-100, 133).

2. The Contractor shall install Con Edison provided precast concrete roof slabs where required on Con Edison reference standards. Roof slab shall be set with minimum 675 mm cover to proposed grade (unless otherwise directed) in order to clear proposed roadway pavement subbase course.

3. The Contractor shall install reinforced cast-in-place concrete chimneys [(EO-10321-B), Methods 4 or 6] over precast roof slabs for type S box, M11-6 and M-14 manhole structures. The Contractor shall install Con Edison provided frame and cover per EO10321-B, EO-1092, EO-100,271, EO-100,167, EO-13465-C, EO-9359-C, EO-12428B, EO-12917-B and EO-8835-B.

4. For precast boxes, the installation shall include the breaking out of the precast walls for duct entrances.

5. Construction of cable manholes and distribution boxes shall be in accordance with all Con Edison reference drawings, specifications and requirements.

Conduits installation:

1. The Contractor shall install Con Edison provided conduits with a 51mm (unless otherwise indicated) separation. Conduit formation shall be in accordance with Con Edison drawing EO-7326-B.

2. Duct formation entering manholes shall be as directed by Con Edison.

3. All conduits shall have a minimum earth cover of 600mm. If due to subsurface conditions the earth cover is less than 600mm, the duct shall be plated with a 10mm steel plate, which shall be furnished by Con Edison.

4. Conduits entering manholes shall be terminated at 25mm beyond the inside face of the manhole wall. The edge of the conduits shall be beveled and free of all sharp edges to prevent cutting of cables.

Page 4 of 7

01/20/2006

ITEM 11662.9901 M - NEW CON EDISON FACILITIES

5. Inside all conduits, the Contractor shall install a 6mm polypropylene rope, furnished by Con Edison, with sufficient length to extend beyond the duct ends to attach to a mandrel.

6. The Contractor shall cap the end of the conduits until the cables are installed.

EXCAVATION AND BACKFILLING TRENCH

The Contractor shall excavate and backfill the trenches on both sides of the bridge approaches for installation of the electric duct system. The width and depth of the trench shall be in accordance with Con Edison drawing EO-7907-D and as directed by the Engineer. Any work on the sidewalk and/or pavement shall be performed in accordance with the following sections of the NYSDOT Standard Specifications:

Unclassified Excavation and Disposal

203

Subbase Course

304

Hot Mix Asphalt (HMA) Pavements

402

Cement Concrete Foundation for Pavement 503

Concrete Sidewalks and Driveways

608

INSPECTION/CLEANING

The Contractor shall pass a conduit rodding device through the completed ducts to check for continuity and cleanliness. Following the conduit rodding, a mandrel preceded by a wire brush (tied to the same rope and of a size not less than the inside diameter of the conduit minus 6mm) shall be pulled through the conduit once in each direction. Con Edison shall furnish wire brush and mandrel for inspection. The Contractor shall perform the above inspection in the presence of a Con Edison Representative.

If difficulty is encountered in passage of the conduit rodding device or the mandrel, a series of wire brushes shall be drawn through the conduit, once in each direction, using a trailing line. The wire brushes shall be 3mm less than the inside diameter of the conduit, and if this size cannot be passed through on the first attempt, the operation shall be repeated using 6mm less than the inside diameter of the conduit until the operation is accomplished, then brush diameters shall be increased in 6mm increments until required diameter is successfully accomplished.

If the conduit is partially or fully obstructed, the conduit shall be flushed clean by use of water from a long flushing nozzle attached to a water hose, which shall be pushed into the conduit and applied until the conduit is clear. If this procedure does not completely clear the conduit, the conduit shall be exposed and repaired.

? Should the Contractor, through negligence in installing or during the cleaning operation damage any conduit, it shall be replaced with new conduit to the satisfaction of the Engineer and at no

Page 5 of 7

01/20/2006

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download