00010029_Att A_Special Provisions.docx

ATTACHMENT A – SPECIAL PROVISIONS

D1 BRIDGE DECK SEALS 2024

These Special Provisions identify and modify certain sections of the Standard Specifications which are incorporated into this ITB and resulting Contract in ITB section C.2.6. The Standard Specifications are available online at:

https://www.oregon.gov/odot/Business/Specs/2024_STANDARD_SPECIFICATIONS.pdf

All number references in the special provisions shall be understood to refer to the sections and subsections of the Standard Specifications bearing like numbers.

SECTION 00220 - ACCOMMODATIONS FOR PUBLIC TRAFFIC

Comply with Section 00220 of the Standard Specifications modified as follows:

00220.40(e)(1) Closed Lanes - Replace this subsection, except for the subsection number and title, with the following:

Traffic Lanes may be closed on the Oregon Coast Hwy US101 when allowed, shown, or directed during the following periods of time except as specified in 00220.40(e)(2):

Single Lane Closures – One Traffic Lane on the Oregon Coast Hwy US101 may be closed during the following times:

Nightly, Sunday through Friday morning 7pm – 6am.

Add the following subsection:

00220.45 Load Restrictions on Bridges -

For Structure(s) Nos 22364 and 22654, limit the combined weight of construction vehicles, Equipment, and daily Material usage to 45,000 pounds for every 1,000 square feet of surface area plus the weight of long term storage of Materials to 18,000 pounds for every 100 square feet of surface area of the Bridge or a total of 150,000 pounds for each span of the Bridge, whichever is less.

The Contractor may request alternate loadings by submitting, 30 Calendar Days before proposed loadings, stamped loading calculations and data according to 00150.35.

SECTION 00290 - ENVIRONMENTAL PROTECTION

Comply with Section 00290 of the Standard Specifications modified as follows:

Add the following subsection:

00290.30(a)(7) Water Quality:

Do not discharge contaminated or sediment-laden water, including drilling fluids and waste, or water contained within a work area isolation, directly into any waters of the State or U.S. until it has been satisfactorily treated (using a best management practice such as a filter, settlement pond, bio-bag, dirt-bag, or pumping to a vegetated upland location).

Implement containment measures adequate to prevent pollutants or construction and demolition materials, such as waste spoils, fuel or petroleum products, concrete cure water, silt, welding slag and grindings, concrete sawcutting by-products and sandblasting abrasives, from entering waters of the State or U.S.

Implement containment measures adequate to prevent flowing stream water from coming into contact with concrete or grout within the first 24 hours after placement.

Cease Project operations under high flow conditions that may result in inundation of the Project area, except for efforts to avoid or minimize resource damage.

The Engineer retains the authority to temporarily halt or modify the Work in case of excessive turbidity or damage to natural resources.

If Work activities violate permit conditions or any requirement of this subsection, stop all in-water work activities and notify the Engineer.

Do not cause a visible sediment plume in waters of the State or U.S.

SECTION 00504 - CONCRETE DECK SURFACE PREPARATION

Comply with Section 00504 of the Standard Specifications modified as follows:

00504.21(b) Scarifying Equipment – Replace the paragraph that begins “Furnish power-operated diamond grinding…” with the following paragraph:

Furnish power-operated diamond grinding, micro-milling, or shot blasting scarifying Equipment capable of uniformly removing the existing surface to depths required.

00504.21(b)(4) Hydroblasting – Delete this subsection.

00504.40(f) Structural Overlay Removal Replace the paragraph that begins “Remove the existing Structural Overlay to the parent …” with the following paragraph:

Remove the existing Structural Overlay to the parent deck surface. Use Equipment that can sufficiently remove the overlay without exceeding 1/2 inch of parent deck removal.

00504.41(b) Class 1 Preparation – Delete the bullet that begins “Hydroblasting may only be…”

00504.42(a) PPC, MPCO, and Membrane Installations – Replace this subsection with the following:

00504.42(a) PPC, MPCO, Deck Seal, and Membrane Installations - Prepare all surfaces that are to be in contact with the membrane, deck seal or overlay, including vertical contact areas, as follows:

· Clean the entire surface by shot-blasting within 24 hours of placing the membrane or overlay.

· Sweep the area magnetically to remove metal residue.

· Blow clean the surfaces with compressed air.

· Immediately after surface preparation is complete cover the prepared deck with clear plastic, overlapping it to prevent contaminants from construction vehicles or other sources from contacting the deck. Maintain the covering until PPC, MPCO, deck seal or membrane installation.

· If the prepared surface becomes contaminated by spills, rain, or other contaminant before placing the membrane or overlay, prepare the surface again according to this Subsection.

00504.42(b) SCO Overlays – Replace the bullet that begins “Clean the entire surface by shot-blasting…” with the following bullet:

· Clean the entire surface by shot-blasting. Shot-blasting is not required on final surfaces that were prepared by chipping or jack hammering.

SECTION 00537 PENETRATING CONCRETE SURFACE TREATMENT

Section 00537, which is not a Standard Specification, is included in this Project by Special Provision.

Description

00537.00 Scope This Work consists of furnishing and placing penetrating sealers on concrete Bridge decks, concrete overlays, and other concrete surfaces as shown.

00537.04 Submittals Submit the following at least 7 Calendar Days before the preplacement meeting for each sealer proposed for use:

· Penetrating sealer, including: Brand name, manufacture’s name, and a copy of the manufacturer’s unabridged application procedures.

· A detailed work plan for the deck sealer preparation, application, and cleanup. Include estimated dates and detailed timelines (sealer installation and opening the Bridge to traffic).

· Plan to shield storm drains, traffic and pedestrians from penetrating sealer application, including overspray.

· Number and size of sample lots for cores. Include a map or drawing of core locations.

Do not proceed with the Work until the proposed work plan has been approved by the Engineer.

00537.05 Pre-Placement Meeting Hold a pre-placement meeting with the Engineer at least 10 Calendar Days before applying the sealer. Do not proceed with the Work until the proposed work plan has been approved by the Engineer.

Materials

00537.10 Materials:

(a) Silane Sealer Furnish a water based silane sealer meeting the requirements of 02060.30.

(b) Dye Furnish a fugitive dye to make the solution visible on the treated concrete surface for at least 5 hours. Ensure the dye is not conspicuous longer than 7 Days after application when exposed to direct sunlight.

Equipment

00537.20 General Remove all Equipment that leaks oil or other contaminants from the Project Site until they are repaired.

00537.21 Application Equipment Furnish truck mounted or trailer mounted low pressure airless application Equipment with an application pressure from 15 psi to 40 psi and multiple adjustable nozzles. Prevent overspray or misting. Provide heavy nap rollers or other manufacturer recommended Equipment, as approved by the Engineer. Hand pump sprayers are not permitted.

Labor

00537.30 Personnel Qualifications – Provide a technical representative from the sealer manufacturer must be present during the first application of each approved sealer on the Project. The need for manufacturer’s representative may be waived if the Contractor provides evidence and reference contacts for work involving at least 5 Bridges treated with the same products within the last two years.

Construction

00537.40 General Do not begin sealing Work until all Materials and Equipment necessary to perform the Work are at the job site.

(a) Application Conditions Apply the sealer when the following conditions exist:

· The ambient and deck surface temperature are between 45 °F and 100 °F.

· The deck surface:

· Has been dry for at least 72 hours.

· Has a surface temperature at least 5 °F above the dew point.

· There is no forecasted precipitation during application and less than 12 hours after completion of application. If precipitation occurs during application or 12 hour window, stop work and re-apply sealer at no additional cost to the Agency.

· Wind speeds are 15 mph or less.

(b) Handling Materials Store sealer at temperatures recommended by the manufacturer. Use penetrating sealer treatment solution from original unopened manufacturers containers with seal(s) intact and the manufacturer's label visible. Do not use Materials that have exceeded their expiration date.

00537.41 Surface Preparation Prepare all deck surfaces according to Section 00504 modified as follows:

· Perform Class 1 Preparation according to 00504.41(b) with a surface texture depth profile of at least 1/16 inch.

· Perform final surface preparation according to 00504.42(a).

· Block out interior Bridge joints and drains with rigid polyethylene foam or other approved Material to prevent leaking of sealer. Clean the surfaces of dirt, dust, curing compounds, laitance, debris, oil, grease, and foreign matter that would prevent sealer penetration, adhesion, or drying.

· Ensure all foreign Materials are removed from the concrete surfaces.

· Approved solvents and hand tools can be used to remove bonded Materials detrimental to concrete surface treatment.

00537.42 Application:

(a) General Apply sealer according to the following:

· Use the same sealer for the entire Structure.

· No thinning or alteration of the sealer, with exception of the fugitive dye, is permitted.

· Apply sealer within the same shift as final surface preparation.

· Apply the sealer by brushing, rolling or spraying a flood coat onto concrete surfaces with approved Equipment.

· Avoid sealer running or pooling. Spread treatment from ponded areas to dry areas.

· On sloping and vertical concrete surfaces, apply sealer from bottom to top.

· When possible, apply subsequent coats perpendicular to the previous application.

· Sweep the entire deck surface after the sealer has cured and remove all loose material.

(b) Pre-production Trial Application Perform a test application on each Structure in the presence of the Engineer. Perform the test with a minimum of 1/2 gallon of sealer. Use the approved Equipment and apply the sealer within the project limits on the surface to be treated. Verify coating application methods and yield rates.

(c) Application of Silane Sealer:

(1) Number of Coats and Yield Rate Apply a minimum of two coats. Apply at the yield rate verified by the pre-production trial application, or at a minimum rate of 200 square feet per gallon.

(2) Coating Thickness and Coverage Requirements Coating thickness measurements will not be made. A visual inspection for complete coverage will be made by the Engineer after each coat. If coating coverage of any single coat is incomplete, apply an additional coat at no additional cost to the Agency.

(3) Protection Protect Public Traffic, pedestrians, exposed metal, and non-concrete appurtenances from overspray using physical barriers or other approved methods.

(d) Application of Concrete and Crack Epoxy Sealer:

On structures specifying a penetrating sealer and a concrete and crack sealer:

Apply the concrete and crack sealing according to 00539.45 after the silane sealer has dried. Apply epoxy sealer within the same shift as silane sealer application.

00537.43 Inspection The Engineer will inspect Materials and each phase of preparation and coating. Do not proceed with succeeding phases until approved. Provide the Engineer with timely, safe access to areas where Work is being performed. Allow adequate time for inspection at each hold point. Provide hold points at the following times:

· Before cleaning operations begin.

· After cleaning operations are completed and before application of any coating Materials.

· After Pre-production trial application.

· After each full coat.

00537.44 Sampling and Testing of Bridge Decks For each Structure, determine the number of core locations by dividing the surface area of the Bridge deck by 10,000 square feet. Round to the nearest whole number. A minimum of 2 cores are required per Structure.

Take cores a minimum of 7 Days after silane application. Prior to coring, locate rebar in the Bridge deck to avoid rebar. Make cores 3 inch in diameter by 4 inch in depth. Core the concrete in the Engineer’s presence and submit the cores to the Engineer for verification testing.

Repair core locations using Material from 02015.20 of the QPL. Perform core hole repairs the same Day the cores are taken.

Sampling and testing is for informational purposes only. Acceptance will be visual and based off application rates.

Measurement

00537.80 Measurement The quantities of penetrating concrete sealing will be measured on the area basis, and will be the sealed surface area, excluding curb and rail faces, and will be limited to the Neat Lines and dimensions shown or directed. Field measurement of the area will not be made. The area will be determined by calculating the area from the dimensions shown.

Payment

00537.90 Payment The accepted quantities of penetrating concrete sealing will be paid for at the Contract unit price, per square foot, for the item "Penetrating Concrete Sealing".

Payment will be payment in full for furnishing and placing all Materials, and for furnishing all Equipment, labor, and Incidentals necessary to complete the Work as specified.

SECTION 00539 - CONCRETE AND CRACK SEALING

Section 00539, which is not a Standard Specification, is included in this Project by Special Provision.

Description

00539.00 Scope - This Work consists of furnishing and placing concrete and crack sealer on concrete Bridge decks, concrete overlays, and other concrete sections as shown.

Materials

00539.10 Materials - Furnish a Low Modulus concrete and crack sealer meeting the requirements of Section 02060.

Construction

00539.40 General - Begin sealing work when all materials and equipment necessary to perform the work are at the job site.

(a) Placement Conditions - Apply the sealer when:

· The ambient temperature, surface temperature, and relative humidity (RH) meet the requirements on the manufacturer's written data sheet.

· Silane sealer has had sufficient drying time.

· During the hours of darkness, work areas are illuminated. Submit an illumination plan for approval at the pre-placement conference.

(b) Handling Materials - Store sealer at temperatures recommended by the manufacturer.

(c) Pre-Placement Meeting - Hold a pre-placement meeting with the Engineer at least 10 Calendar Days before applying the sealer. Submit for the Engineer's approval a manufacturer approved procedure for preparing the concrete surface, applying the sealer, and broadcasting the Sand. Include in the procedure the number of persons required, Equipment, installation sequence, sealer application rate, sealer dwell time, sealer gel time, broadcast Sand application rate, traffic control, and the estimated time schedule for installing the sealer and opening the Bridge to traffic. Do not proceed with the Work until the proposed procedure has been approved by the Engineer.

· Area of Application - Apply the sealer full width of the deck and roadway or as directed.

· Protect adjacent surfaces not to be covered with the sealer from spatter or coating.

· Applicator Qualifications - Provide a manufacturer authorized applicator. Re-certify the manufacturer authorized applicators yearly.

00539.45 Installation - Install sealer according to the following:

· Roll, squeegee, or broom the sealer at application rates and procedures recommended by the manufacturer.

· Allow sealer to dwell on the surface for the time recommended by the manufacturer.

· Remove all excess sealer from the surface with a squeegee, broom, or by other methods and within the time limitations recommended by the manufacturer before broadcasting the Sand.

· Before the sealer gels, broadcast the Sand at the rate recommended by the manufacturer or as required to reach refusal.

· Sweep the entire deck surface after the sealer has cured and remove all loose Material.

Measurement

00539.80 Measurement - The quantities of concrete and crack sealer will be measured on the area basis, and will be the sealed surface area, excluding curb and rail faces, and will be limited to the Neat Lines and dimensions shown or directed.

Payment

00539.90 Payment - The accepted quantities of concrete and crack sealer will be paid for at the Contract unit price, per square foot, for the item "Concrete and Crack Sealer".

Payment will be payment in full for furnishing and placing all Materials, and for furnishing all Equipment, labor, and Incidentals necessary to complete the Work as specified.