Article 1 — Description
Repair or replace damaged concrete railing on bridges, culverts, parapet walls, retaining walls, or other structures as shown on the plans and as directed.
Article 2 — Materials
Provide materials in accordance with the following Items except as shown on the plans. Item 427, “Surface Finishes for Concrete” Item 429, “Concrete Structure Repair” Item 450, “Railing” Item 776, “Metal Rail Repair” Submit information regarding pre-packaged repair materials, epoxy anchorage systems, and concrete mix design at least 10 calendar days before beginning work.
Article 3 — Equipment
Provide equipment in accordance with Item 429.
Article 4 — Work Methods
Obtain approval for all materials and work methods at least 10 calendar days before beginning work. Repair or replace damaged concrete rail as shown on the plans. Perform the work in accordance with Item 429 and Item 450, as directed. Contain concrete during removal to prevent falling onto lower roadway or into waterway. Remove and replace full height of rail if damage exceeds half of the rail height, except as shown on the plans and as directed. Remove existing metal rail components and attachments , and salvage for reuse when undamaged or repairable. Saw-cut perimeter of concrete repair region 1/2 in. deep. Remove concrete to limits shown on the plans and as directed to remove spalled and delaminated areas. Increase repair length to remove the cracked concrete as directed where cracks associated with impact damage remain outside the specified repair area. Repair rail supporting structure (e.g., bridge deck and wingw all) when damaged in conformance with additional Items of work as shown on the plans and as directed. Include new rail anchorage reinforcing steel in supporting structure as required. Drill into undamaged base concrete and add epoxy anchored reinforcing steel to restore severed or damaged rail anchorage reinforcing steel. Provide epoxy anchorage system rated to obtain yield strength of bar being anchored based on the product literature for the epoxy and steel anchor being used. Use 60-ksi reinforcing steel. Clean and extend existing reinforcing steel and replace any damaged steel or add additional steel as shown on the plans. Restore shape of rail to match original. 1011 Provide surface finish to match original. Provide and apply paint in accordance with Item 427 to match color of existing rail if the existing rail was previously painted. Reinstall metal rail components and attachments where previously present. Salvage and reinstall metal components of expansion joint and joint seal to match existing conditions when repair and replacement occur at an expansion joint. This work will be subsidiary to this Item.
Article 5 — Measurement
This Item will be measured by the foot of rail repaired or replaced and by each rail post repaired or replaced.
Article 6 — 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 “Concrete Rail Repair,” “Concrete Rail Replacement,” “Concrete Post Repair,” and “Concrete Post Replacement” of the type identified. This price is full compensation for removing and reinstalling metal rail components; breaking back and restoring concrete rail; furnishing and placing all materials; salvaging and reinstalling existing expansion joints ; and all labor, tools, equipment, and incidentals necessary to complete the work.