for Highway Construction Page 460 of 71 5 SECTION 586 – UTILITY CONDUIT
586.01 Description.
Install utility conduits across the bridge and under the approach roadway to the termination point outside the structure, including threaded inserts cast in the concrete deck , PVC pipe sleeves as required, and utility conduit .
586.02 Materials.
Meet the following requirements:
1.Utility conduit . PVC pipe, schedule 40, if encased in concrete. PVC pipe, schedule 80, if not encased in concrete.
2.Deck inserts. Provide a minimum safe working load of 1,000 pounds.
3.Standard weight steel pipe . ASTM A53 Grade B or A501.
586.03 Construction Requirements.
Install the threaded inserts and utility conduit as specified, unless otherwise directed. Solvent-weld PVC joints , except expansion couplings. Prove conduits by blowing a pull string from end- to-end of each conduit. Leave the pull strings in place unless otherwise directed. Verify the lo cation of existing utilities and structures before starting construction and immediately notify the Engineer of discrepancies found. Install the deck inserts for the utility conduits at the spacing specified.
586.04 Method of Measurement.
The Engineer will measure acceptably completed work by the lump sum.
586.05 Basis of Payment .
The Department will pay for accepted quantities at the contract unit price as follows : Pay Item Pay Unit Utility Conduit ......................................................................................... LS Structure excavation and compacting backfill are incidental . for Highway Construction Page 461 of 71 5 SECTION 587 – PAINTING STRUCTURAL STEEL
587.01 Description.
Prepare and paint the structural steel within the limits as specified. This work will consist of surface preparation by solvent cleaning, power washing, blasting, testing of blast surface for salts, full containment, proper disposing of debris, furnishing and applying paint, shielding adjacent areas from unwanted paint, and cleaning up after painting is complete. The Contractor or its subcontractor(s) will furnish labor, materials, equipment, services, and incidentals necessary to prepare and paint the steel. The work includes full removal of paint and rust from the steel, construction of any required containment facilities, debris collec tion, site storage , disposal, cleaning of the steel by water jetting, and painting of the steel structure. This work will be done in accordance with this specification and as directed. The existing paint may contain lead- base d paint. The Contractor is required to conduct their own monitoring at the beginning of the work, in accordance with federal regulations, and adjust worker protection and work practices according to the monitoring results. The Contractor must have current certification in accordance with SSPC Qualification Procedure No. 1 (QP
1.and No. 2 (QP 2).
587.02 Materials.
The coating system must incorporate single- component, moisture- cured polyurethanes for all priming and intermediate operations. Single- component, moisture- cured aliphatic polyurethane or polyester modified, aliphatic, acrylic polyurethane will be used for all top- coating operations. All coating products furnished must be manufactured by the same manufacturer and be compatible with one another. All coatings will be free of lead or chromates. Paints and certification must meet 707. Pre-approved paint systems specified are as follows:
1.System I: Sherwin Williams™.
a.Primer: Corothane I Galva-P ac One Pack Zinc Primer (B65G11).
b.Intermediate: Corothane I Ironox B (B65A11).
c.Topcoat: Acrolon 218 HS (B65- 650).
2.System II: Wasser® High -Tech Coatings.
a.Primer: MC -Zinc.
b.Intermediate: MC -Ferrox B.
c.Topcoat: MC -Luster. The paint system wi ll be as preapproved or be an Engineer -approved equal. An approved equal must be a standard, regularly produced product and submitted for approval based on the manufacturer’s published literature that states instruction for use, solids by volume, applicati on rates, VOC content, environmental considerations, and chemical components of vehicles and solids. This literature must include a referenced list of bridge projects where the paint systems were successfully used and name the contractor who applied them. The Contractor must furnish paint manufacturer’s certifications and show that the paint and thinners comply with the paint system requirements. Should the proposed equivalent manufacturer's literature require
Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 496–496 of 768.