8−161Surfaces.”
c."Rules and Regulations for Hazardous Waste Generation, Transportation, Treatment, Storage, and Disposal.”
d."Rules and Regulations for Solid Waste Management Facilities.”
826.03.2 Personnel Protection.
a.Painting and Cleaning Operations. During Painting and Cleaning Operations, the Contractor must assure that the workers engaged in the removal of lead based paints and blast cleaning operations, both those of the Contractor and the State, are adequately trained, protected, equipped, and monitored against the harmful effects of lead and blast media during all phases of the painting operations. Personnel protection and all of its related activities and requirements shall be performed in accordance with the Special Provisions contained in the Contract Documents. Additionally, all monitoring respiratory protection, protective clothing, housekeeping and hygiene, medical surveillance, medical protection, training, signs and record keeping shall comply with the latest rules, regulations, requi rements, standards and/or procedures of the following agencies which shall include, but not necessarily be limited to, the following:
1.The Occupational Safety and Health Administration , 29 CFR Part 1926 as well as, and more specifically, Part 1926 as well as, and more specifically, Part 1926 .62, "OSHA Standard for Lead in the Construction Industry" with appendices; A - "Substance Data Sheet for Occupational Exposure to Lead,” B-"Employee Standard Summary,” C-"Medical Surveillance Guidelines,” and D- "Qualitative and Quantitative Fit Test Protocols.”
2.Rhode Island Department of Health, Environmental Lead Program , "Rules and Regulations for Lead Poisoning Prevention as applicable. The above documents should be available as applicable through the local offices of the U.S. Department of Labor, Occupational Safety and Health Administration. The location of these offices is indicated in Special Provision Code 826.1000 of the Contract. The Contractor shall be responsible for providing the necessary testing equipment, protective clothing and facilities as required by the above documents.
826.04 METHOD OF MEASUREMENT. "Containment, Collection, Storage and Disposal of Debris
and Spent Materials" will not be measured separately for payment. "Personnel Protection During Painting and Cleaning Operations" will not be measured separately for payment.
826.05 BASIS OF PAYMENT. "Containment, Collection, Storage and Disposal of Debris and
Spent Materials" will be paid for at the contract lump sum price as listed in the Proposal. The price so stated shall constitute full and complete compensation for all materials, labor, equipment, collection and containment equipment, storage requirements, engineering, sampling, testing, disposal fees and all incidentals required to finish the work, complete and accepted by the Engineer. 8−162 "Personnel Protection During Painting and Cleaning Operations" will be paid for at the contract lump sum price listed in the Proposal. The price so stated shall constitute full and complete compensation for all materials, labor, equipment, monitoring devices, changing and shower facilities, professional hygienist, medical facilities and all incidentals required to finish the work complete and accepted by the Engineer. SECTION 827 THERMAL SPRAYED ZINC COATING FOR NEW STRUCTURAL STEEL
827.01 DESCRIPTION. This work consists of thoroughly cleaning, preparing surfaces, and
applying an application of thermal sprayed zinc coating to the surfaces of new structural steel and its components at the locations indicated on the Plans or as directed be the Engineer, all in accordance with these Specifications. 827.02 MATERIALS. Materials shall conform to the applicable requirements of Subsection
M.05.07; Metalizing , of these Specifications.
827.03 CONSTRUCTION METHODS. 827.03.1 Surface Preparation.
a.Blast Equipment. Blast equipment shall be conventional air type. Under no circumstances is any type of water or vapor blast to be utilized. The air supplied for blasting will have sufficient pressure at the nozzle to achieve the desired profile, and shall be clean and free of oil and moisture. Surfaces prepared for metal spraying shall also be kept free from oil and moisture until zinc coating has been applied.
b.Blast Cleaning. The blasting operation shall be performed in a block or sectional method and must be continued until all foreign matter and scale on the original surface has been removed and until the cleaned metal surface is bright and completely abraded by the abrasive. All steel surfaces shall be cleaned to a white metal condition using the methods described in the Steel Structures Painting Council Surface Preparation Specification No. 5; White Metal Blast Cleaning (SSPC-SP5). The steel surface temperature must be a minimum of 2.8 OC (5OF) above the dew point. Abrasive used shall be as specified above. The blast cleaning shall leave a 2.0 to 4.0 mil deep profile in a dense uniform pattern of depressions and ridges. Surface profile depth shall be measured and/or verified by the use of an Elcometer surface profile gauge, or equal, or Testex Replica Tape. All blasting debris shall be contained, collected, stored, and disposed of in accordance with the latest environmental regulations in effect. 8−163Blow down, brush and/or vacuum the surface of the steel to remove all visible abrasive and dust from the surfaces to be thermal spayed. Erection marks, for the field identification of members, and weight marks shall be transferred or preserved. Any grease pencil marking shall be removed by solvent wiping. The Engineer's approval of the preparation of all surfaces is required before any thermal sprayed zinc is applied. 827.03.2 Thermal Spraying Zinc.
a.Thermal Spray Equipment. Thermal spray guns manufactured by an established domestic company of the gas or arc type ar e acceptable and recommended. The equipment shall be used in accordance with the manufacturer's recommendations.
b.Thermal Spraying. All surfaces shall have been prepared in accordance with the requirements set forth above in Subsection 827.03.1. No surface shall be sprayed which shows any sign of rust, scale, moisture, or foreign matter. At least one single layer of the coating must be applied within a maximum of 4 hours of the blasting. The sprayed metal shall overlap on each pass, in a cross-hatch block pattern not to exceed 2 feet square to insure uniform coverage. The specified thickness of the coating shall be applied in multiple layers and in no case less than two passes of the spraying shall be made over every part of the surface. Coating operations shall be performed in a neat and workmanlike manner, producing a uniform, even coating which is bonded firmly with the steel. The coating shall be free from uncoated spots, lumps, or blisters, and shall have a uniform sprayed fine texture finish. The dry coating thickness shall be 8.0 mils (±1 mil). The coating thickness shall be measured using the methods described in the Steel Structures Painting Council Paint Application Specification No. 2 - Measurement of Dry Paint Thickness with Magnetic Gauges (SSPC - PA2). All steel coated with impure, unsatisfactory, or unapproved coating material, or coated in an unworkmanlike manner, shall be removed and recoated or otherwise corrected as directed by the Engineer. Areas not meeting the coating thickness requirements above shall be resprayed to the specified thickness after appropriate surface preparation.
c.Field Repair. All field repair shall be made in strict accordance with the material supplier's recommendations, these Specifications, and shall be approved by the Engineer.
827.03.3 Subsequent Coatings. Any top coating over the zinc required by the Contract shall be
compatible with the zinc and be applied in accordance with the appropriate Specifications.
827.03.4 Approval Requirements.
a.Samples. The Contractor must submit at least 30 days prior to zinc metalizing application a steel plate approximately 12" x 12" to which zinc coating has been deposited to the specified thickness, (as checked with a fixed probe gauge), for acceptance by the Engineer as to grain size and texture of the sprayed metal. Su ch plate will be used to determine the acceptance of 8−164 the finished job. These plates shall be prepared by the same profiling process and have the same surface profile as the steel surface to be thermally sprayed. In the event the Contractor's production coating is inferior to the sample, he shall be required to correct the coating by an acceptable repair method and do a job comparable to the specimen submitted.
b.Qualification/Certifications. The Contractor is responsible for providing certification for each journeyman applicator to the inspector prior to production assignment. The inspector shall review the certification provi ded by the Contractor. If in the course of the work a certified journeyman applicator's work is not considered satisfactory, the Contractor may be requested to recertify or replace that particular journeyman applicator. If rece rtification is required, it shall be accomplished by the following procedure under the direction of the inspector. Recertification shall be conducted in a suitable location removed from the area of ongoing work operations. The qualifying test for recertification shall consist of the journeyman applying the coating system to the test panel in accordance with the requirement of the application procedure(s), and shall include at a minimum: Installation of the thermal spray system in accordance with the manufacturer's recommendations. Adjusting the system operating parameters in accordance with the manufacturer's recommendations. Apply a steady and even application of sprayed metal to a right-angle joint in order to avoid an excessive buildup in the fillet area. Repair of defect made by means of a hammer and chisel in the test panel.
c.Quality Control (Process Control). In addition to the general process control requirements of the Contract, the following specific process control items shall be required. Technical supervision will be required for shop and field applications. Daily logs of air and surface temperature, dew point and relative humidity shall be maintained. The surface profile of each beam will be measured using Testex (or equal) r eplica tape and retained. This shall be made available to the State inspector on request.
d.Safety and Health. Employees required to enter confined spaces where the work is being conducted shall be instructed as to the nature of the hazards involved, the necessary precautions to be taken, and in the use of protective and emergency equipment required. All pertinent OSHA regulations shall apply. 827.04 METHOD OF MEASUREMENT. "Thermal Sprayed Zinc Coating" will be measured by the number of square feet of steel actually sprayed in accordance with the Plans and/or as directed by the Engineer. 8−165827.05 BASIS OF PAYMENT. The accepted quantity of "Thermal Sprayed Zinc Coating" will be paid for at the contract unit price per square feet as listed in the Proposal. The price so-stated constitutes full and complete compensation for all labor, materials, equipment, tools, technical supervision, and all incidentals required to finish the work, complete and accepted by the Engineer. SECTION 828 BRIDGE BEARINGS 828.01 DESCRIPTION. This work consists of furnishing and installing bridge bearings. Bearing types specified in this provision include elastomeric pads, pot and disc bearings and sliding bearings. Other types of bridge bearings, if required, will be specified in the Special Provisions. Included as components of bridge bearings are masonry, sole and shim plates, anchor bolts, elastomeric elements, TFE (teflon) sheets or surfacing, lubricants and adhesives. Bridge bearings shall be fabricated and installed in accordance with the details indicated on the Plans, or as directed by the Engineer, all in accordance with these Specifications. 828.01.1 Elastomeric Pad Bearings. Elastomeric bearings shall include unreinforced pads (consisting only of elastomer) and bearings reinforced with steel or fabric laminates. 828.01.2 Pot and Disc Bearings. Pot and disc bearings provide both rotation in all directions and sliding in those specific directions indicated on the Plans. Rotation is provided by an elastomeric element and sliding is provided by a sheet of polytetrafluoroethylene (TFE). Manufacturers of pot and disc bearings are included in the Department's Approved Materials List. The pot and disc bearings detailed on the Plans are of a conceptual nature only. Minimum bearing capacities are indicated on the tables on the Plans. Bearings fabricated by manufacturers listed in the Department's Approved Materials List or other qualified manufacturers will be accepted. The overall width and/or length of pot and disc bearings must fit within the limits of the concrete beam seats. The overall height of the bearings must be known before the precise beam seat elevation can be determined. Therefore, basic details of the bearings shall be submitted to the Engineer within sixty days after Contract award, all in accordance with the provisions of Subsection 105.02; Plans and Shop Drawings, of these Specifications.
828.01.3 Sliding Bearings. Sliding bearings consist of the following types.
a.Expansion Bearings. Type A bearings prevent transverse movement, and Type B bearings allow transverse movement.
b.Fixed Bearings . Type C bearings prevent transverse movement, and Type D bearings allow transverse movement.
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 495–499 of 826.