2024 Speci fications 472
Article 1 — Description
Remove, transport, clean, and re- lay existing precast concrete box culvert and storm drain pipe.
Article 2 — Materials
Bituminous coating must meet the requirements of Section 460.2.2., “Protective Coating.”
Article 3 — Construction
Precast concrete box culvert and storm drain pipe to be removed and re- laid are as shown on the plans. Remove debris and sediment within the culvert and storm drain pipe. Mark the top and bottom of reinforced concrete box or pipe before removal and reinstall in the same position. Clean joints to facilitate proper re-laying. Install concrete pipe in accordance wit h Item 464, “Reinforced Concrete Pipe.” Install corrugated metal pipe in accordance with Item 460, “Corrugated Metal Pipe.” Install precast concrete box culvert in accordance with Item 462, “Concrete Box Culverts and Drains.” Excavate, bed, and backfill in accordance with Item 400, “Excavation and Backfill for Structures.” Prevent damage to the box culvert or pipe and fittings . Make connections to existing structures as shown on the plans and in conformance with the requirements for connections as described in pertinent specifications. Connect reinforced concrete pipe to corrugated metal pipe with a suitable concrete collar with a minimum thickness of 4 in. or as shown on the plans. Use a coating of bituminous material to insulate portions of aluminum pipe that are to be in contact with metal other than aluminum. Extend coating at least 1 ft. beyond area of contact. Reuse headw all, aprons, or other appurtenances by severing from the culvert or pipe and moving to the new position i f shown on the plans. Make connections for joining sections of box culvert or pipes in conformance with pertinent Items. Replace any items designated f or reuse with new material or restore them to previous condition, as approved. The Contractor may remove and dispose of existing structures and construct new structures at no expense to the Department in conformance with pertinent specifications and as sho wn on the plans or as approved.
Article 4 — Measurement
This Item will be measured by the foot between the ends of the box culvert or pipe barrel along the flow line as installed. Where spurs, branches, or connections to the existing box culvert or pipe lines are involved, measurement of the spur or connecting box culvert or pipe will be made from the intersection at the flow line with the outside surface of the structure into which the box culvert or pipe connects. Where inlets, catch basins, manholes, safety end treatments, or other structures are included in lines of box culvert or pipe, the length of box culvert or pipe tying into the structure wall will be included for measurement , but no other portion of the structure length or width will be included. 2024 Speci fications 472 742 5. PAYMENT The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for “Removing and Re-L aying Pipe” or “Removing and Re-Laying Box Culvert ” of the size specified. This price is full compensation for excavating and removing pipe from its original location; loading, hauling, placing, and joining pipe; cutting pipe ends on skew or slope; moving and reusing headwalls and safety end treatments; connections to existing structures; concrete collars and reinforcing; and equipment, materials, labor, tools, and incidentals. Removal and disposal of box culvert, pipe, and appurtenances not reused will be subsidiary to the bid items of the Contract. Protection methods for excavations greater than 5 ft. in depth will be measured and paid for as required under Item 402, “Trench Excavation Protection,” or Item 403, “Temporary Special Shoring.” Excavation, bedding, and backfill for re- laying pipe will be paid for in accordance with Item 400. When jacking, boring, or tunneling is used at the Contractor’s option, payment will be made under this Item. When jacking, boring, or tunneling is required, payment will be made under Item 476, “Jacking, Boring, or Tunneling Pipe or Box .”