00004766_Att B_Specifications.docx

ATTACHMENT B – SPECIFICATIONS

Project Description/Schedule:

The purpose of this project is to make minor corrections to curb ramps that will make the curb ramps ADA compliant. The project includes 36 curb ramps located throughout ODOT Region 2, as shown on the project Plan Sheets.

Standard Specifications:

The 2021 Oregon Standard Specifications for Construction (Standard Specifications) include detailed technical specifications in Parts 00200 and beyond that apply to this Invitation to Bid and the resulting Contract. Some sections of the technical specifications are identified and modified in the Special Provisions below. Sections of the technical specifications not identified in the Special Provisions remain applicable to the Contract according to their original terms. Part 00100 (General Conditions) does not apply to this Invitation to Bid and resulting Contract; however, if a technical specification (Parts 00200 and beyond) references a Section from Part 00100, that Section from Part 00100 applies to the Contract for purposes of supporting and giving full effect to the technical specification.

All number references in the Special Provisions shall be understood to refer to the Sections and subsections of the Standard Specifications bearing like numbers.

The Standard Specifications are available at:

https://www.oregon.gov/odot/Business/Specs/2021_STANDARD_SPECIFICATIONS.pdf

Standard drawings referenced in the Standard Specifications/Special Provisions are available at:

http://www.oregon.gov/ODOT/Engineering/Pages/Standards.aspx

Special Provisions:

SECTION 00210 - MOBILIZATION

Comply with Section 00210 of the Standard Specifications.

SECTION 00220 - ACCOMMODATIONS FOR PUBLIC TRAFFIC

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

00220.00 Scope – Add the following paragraph:

Comply with the requirements of the 2009 Edition of the Manual of Uniform Traffic Control Devices.

00220.02(a) General Requirements - Add the following bullets to the end of the bullet list:

When an abrupt edge is created by excavation, protect traffic according to the "Excavation Abrupt Edge" and the "Typical Abrupt Edge Delineation" configurations shown on the Standard Drawings.

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 Highway when allowed, shown, or directed during the following periods of time except as specified in 00220.40(e)(2):

· Daily, Monday Through Friday 9:00 a.m. to 3:00 p.m.

Single Lane Closures – One Traffic Lane may be closed during the following times:

Daily, Monday through Friday, between 9:00 a.m. and 3:00 p.m.

SECTION 00221 - COMMON PROVISIONS FOR WORK ZONE TRAFFIC CONTROL

Comply with Section 00221 of the Standard Specifications.

SECTION 00222 – TEMPORARY TRAFFIC CONTROL SIGNS

Comply with Section 00222 of the Standard Specifications.

SECTION 00223 - WORK ZONE TRAFFIC CONTROL LABOR AND VEHICLES

Comply with Section 00223 of the Standard Specifications.

SECTION 00224 - TEMPORARY TRAFFIC CHANNELIZING DEVICES

Comply with Section 00224 of the Standard Specifications modified as follows:

00224.46 Pavement Edge Delineation - Replace the paragraph that begins “Place tubular or conical markers…” with the following paragraph:

Place tubular or conical markers to delineate the edge of Pavement immediately after construction Work or paving operations create an abrupt or sloped edge drop-off greater than 1 inch in height along the right hand or left hand Shoulder.

SECTION 00228 - TEMPORARY PEDESTRIAN AND BICYCLIST ROUTING

Comply with Section 00228 of the Standard Specifications.

SECTION 00310 - REMOVAL OF STRUCTURES AND OBSTRUCTIONS

Comply with Section 00310 of the Standard Specifications modified as follows:

00310.90 Payment ‑ Add the following to the end of this subsection:

No separate or additional payment will be made for removal or disposal Work included in Section 00330 according to 00310.02.

SECTION 00440 - COMMERCIAL GRADE CONCRETE

Comply with Section 00440 of the Standard Specifications modified as follows

00440.12 Properties of Commercial Grade Concrete ‑ Replace the bullet that begins "Slump - 5 inches…" with the following bullets:

Slump - 5 inches or less For concrete sidewalks, ramps, driveways, or other hand finished surface applications, and when using a high range water reducing admixture, provide a slump of 8 inches or less as approved by the Engineer.

00440.13 Field-Mixed Concrete ‑ Replace the subsection, except for subsection number and title, with the following:

CGC Work items listed in 00440.14(a) may be field-mixed conventionally, or by volumetric/mobile mixers conforming to ASTM C685. When approved, concrete sidewalks, concrete curb ramps, concrete driveways, and other flat concrete surfaces may be field-mixed using volumetric/mobile mixers conforming to ASTM C685, request approval prior to placement. For all other CGC applications, submit written request to the Engineer for approval to use volumetric/mobile mixers conforming to ASTM C685 at least 21 Days prior to placement.

Pre-packaged dry blended concrete from the QPL may be used for Work items listed in 00440.14(a).

00440.40(b) Placing ‑ Add the following bullet to the end of the bullet list:

When haul time or placement conditions warrant exceeding the time of discharge, submit a detailed breakdown of the estimated time needed from batching to discharge of a load along with the measures that will be taken to ensure slump, temperature and uniformity will be maintained. Submit in advance to establish a new time limit at the Engineer’s discretion.

SECTION 00759 - MISCELLANEOUS PORTLAND CEMENT CONCRETE STRUCTURES

Comply with Section 00759 of the Standard Specifications modified as follows:

00759.03(b) Curb Ramp Plan ‑ Replace the bullet that begins “Compliance with Working Drawings and details…” with the following bullet:

· Comply with Working Drawings and details submitted under 00759.03(a)

Add the following subsection:

00759.03(d) Corrective Action Plan ‑ Unless otherwise approved, notify the Engineer before performing corrective action. Include TPAR necessary to complete corrective action work.

At least 21 Calendar Days before concrete Structures Work is scheduled to begin, submit a corrective action plan. The corrective action plan shall address procedures to correct deficient Structures through minor corrective action or replacement according to 00759.55(a), and include:

· List of minor corrective actions that will be used to correct deficiencies, according to 00759.50 and 00759.55.

· Procedures for performing corrective action.

· Proposed concrete grinding Equipment and method of grinding.

· Proposed concrete repair Material used for resurfacing ground concrete surfaces according to Section 02015.

· Construction activities, Equipment and staging necessary to complete corrective action Work.

The Engineer will review the corrective action plan(s) and provide a response to the Contractor within 5 Days after receiving the plan. Do not begin concrete Structure Work until the corrective action plan is approved by the Engineer.

Add the following subsection:

00759.23 Concrete Resurfacing Equipment ‑ Furnish power-operated scarifying Equipment capable of uniformly removing and preparing the existing surface to depths required. For concrete grinding operations, furnish 12 segment grinders, fine-toothed scarifying Equipment, or other approved grinding Equipment.

00759.46 Concrete ‑ Replace this subsection, except for the subsection number and title, with the following:

Construct the Structures between suitable forms or by the extrusion method. Place concrete according to the Plans, Section 00440, and this Section.

00759.50(a) General ‑ Add the following paragraphs to the end of this subsection:

Install truncated domes as shown. Place according to the manufacturer's recommendation. Install abutting truncated dome panels with no more than 1/4 inch spacing. Install anchors along cut edges of truncated dome panels according to manufacturer's recommendations.

In addition, finish concrete surfaces of Structures to be within the established Slopes and dimensions allowed by the Standard Drawings and Plans. Repair or remove and replace Structures not meeting the Standard Drawings and Plans at no additional cost to the Agency.

Submit a corrective action plan for each non-compliant Structure after receiving notice of non-compliance from the Engineer. Perform correction of defects according to 00759.55.

00759.50(c) Driveways, Walks, and Surfacings ‑ Replace this subsection, except for the subsection number and title, with the following:

Prevent segregation of the concrete during placement. Strike-off the concrete to the grade shown, and float the surface smooth. After the water sheen disappears, edge the joints and remove edging tool marks prior to final finishing. Lightly cross-broom the surface to a uniform texture. Do not trowel joints or edges after brooming surface.

The 24 inch smart level will be used to measure driveway and sidewalk cross slopes on the Pedestrian Access Route.

00759.50(d) Curb Ramps ‑ Replace this subsection, except for the subsection number and title, with the following:

Prevent segregation of the concrete during placement. Strike-off the concrete to the grade shown and float the surface smooth. After the water sheen disappears, edge the joints and remove edging tool marks prior to final finishing. Lightly cross-broom the surface to a uniform texture. Do not trowel joints or edges after brooming surface.

The 6 inch smart level will be used to measure curb running slope. The 6 inch smart level will be used to measure slopes on portions of the curb ramp, gutter pan, or adjacent surfaces that cannot accommodate a 24 inch smart level. All other curb ramp locations will use a 24 inch smart level to measure slopes.

Add the following subsection:

00759.55 Correction of Deficient Structures ‑ Unless otherwise approved, notify the Engineer before performing corrective action. Correct deficiencies at no additional cost to the Agency. Perform corrective actions as directed, according to the approved corrective action plan, and according to the following:

(a) Minor Corrective Action ‑ Submit Equipment and procedure for minor corrective action to the Engineer for approval. Minor corrective action can be performed to correct a deficiency up to 1 square foot per panel. Limit minor corrective action to one area per panel. Perform minor corrective action according to the following:

(1) Concrete Grinding ‑ Grinding to correct high area deficiencies is limited to 3/16 inch. Use equipment meeting the requirements of 00759.23. Resurface all ground concrete surfaces according to 00759.55(a)(2).

(2) Concrete Resurfacing ‑ Resurfacing to correct low area deficiencies is limited to 3/16 inch depth. Existing concrete is to be at least 7 Days old prior to resurfacing. Resurface repair areas according to the following:

a. Keyway ‑ Sawcut a keyway at the boundaries of repair areas that are not already defined by panel control joints. Sawcut is to be 1/8 inch wide by 1/4 inch deep. Bevel inside edge of keyway at a 45 degree angle.

b. Surface Preparation ‑ Prepare limits of repair area by grinding using Equipment from 00759.23. After grinding, sandblast the surface of the repair area. Clean the surface using a low pressure washer, less than 5,000 psi.

c. Presoak ‑ Presoak the repair area for a minimum of 30 minutes to saturated surface dry. Prior to resurfacing, ensure there is no ponding water on the surface.

d. Resurface ‑ Provide concrete resurfacer from the QPL according to 02015.60; refer to QPL remarks to select an appropriate material based on allowable installation depths. Furnish resurfacer in a color that closely matches the color of surrounding concrete surfaces. Mask boundaries of the repair area. Use hand tools to work resurfacer into keyways and match existing grade at boundaries. Apply a light broom-finish to achieve non-slip surface.

e. Curing and Return to Traffic ‑ Wet cure for a minimum of 1 hour or per the manufacturer’s recommendation, whichever is more restrictive. Follow manufacturer’s recommendation for return to traffic time.

(3) ACP Grinding ‑ Taper grind to match existing Pavement with a minimum grinding width of 1 foot for each 1/4 inch of ACP removed.

(b) Acceptance of Structures ‑ Once the corrective work or replacement has been completed, acceptance will be based on the Engineer’s inspection and approval of the Structure.

00759.90 Payment ‑ Replace the paragraph that begins " Item (k) includes the additional Work required …" with the following paragraph:

Item (k) includes the additional Work required to construct a curb ramp or replace an existing curb ramp. Payment for the area of the curb ramp will be made under the concrete walks Pay Item.

Replace the paragraph that begins "No separate or additional payment will be…" with the following paragraph and bullet list:

No separate or additional payment will be made for:

· any necessary repair or removal and replacement of curb ramps

· providing supervisory personnel who have an active ODOT ADA Certification for Contractors to directly supervise the curb ramp Work

· developing corrective action plans

SECTION 02001 - CONCRETE

Comply with Section 02001 of the Standard Specifications modified as follows:

02001.02 Abbreviations and Definitions:

Add the following definition:

Lightweight Concrete ‑ Structural concrete having a specified density using lightweight Aggregates.

Replace the sentence that begins “Pozzolans ‑ Fly ash, silica fume…” with the following sentence:

Pozzolans ‑ Fly ash, natural Pozzolans, silica fume, and high-reactivity Pozzolans.

Replace the sentence that begins “Supplementary Cementitious Materials ‑ Fly ash, silica fume…” with the following sentence:

Supplementary Cementitious Materials ‑ Pozzolans and ground granulated blast furnace slag.

02001.15(a) Current Mix Designs ‑ Replace this subsection, except for the subsection number and title, with the following:

Mix designs that meet the requirements for the specified class of concrete and are currently being used or have been used within the past 24 months on any project, public or private, may be submitted for review. Provide individual test results that comprise the average if more than one data point exists. For paving designs the flexural strength testing must be from within the last two years. For HPC designs the length change and permeability tests must be from within the last two years.

02001.15(b)(1) Trial Batch Plastic Properties ‑ Replace this subsection, except for the subsection number and title, with the following:

For each trial batch, test according to the following test methods:

02001.15(c)(12) Documentation of Average Compressive Strength ‑ Replace this subsection, except for the subsection number and title, with the following:

Provide an analysis, showing applicable data and calculations for documentation of average compressive strength according to ACI 301.

02001.20(a) Strength ‑ Replace Table 2001-1 with the following Table 2001-1:

Table 02001-1 Concrete Strength and Water/Cementitious Material (w/cm) Ratio

'c (psi) Maximum w/cm Ratio

(Seal) 0.45

(Drilled Shaft)

HPC(IC)4500

5000 +

PPCM’s (with cast-in-place decks and no entrained air)

02001.20(a)(1) Required Average Compressive Strength (f’cr) ‑ Replace this subsection, except for the subsection number and title, with the following:

Except for PPCM designs, provide the required average compressive strength according to ACI 301 for mix design approval.

02001.30(e)(1) HPC Coarse Aggregate Content ‑ Delete the paragraph that begins “Two or more Aggregate products or sources…”

SECTION 02015 – PORTLAND CEMENT CONCRETE REPAIR MATERIAL

Comply with Section 02015 of the Standard Specifications modified as follows:

Add the following subsection:

02015.60 Portland Cement Concrete Repair, Resurfacers ‑ Furnish PCC resurfacers from the QPL.

SECTION 02030 – SUPPLEMENTARY CEMENTITIOUS MATERIALS

Comply with Section 02030, of the Standard Specifications modified as follows:

02030.00 Scope ‑ Replace this subsection, except for the subsection number and title, with the following:

This Section includes the requirements for fly ash, natural pozzolans, silica fume, ground granulated blast furnace slag and high reactivity pozzolans used in portland cement concrete.

02030.10 Fly Ash ‑ Replace this subsection, except for the subsection number and title, with the following:

Furnish Class C and Class F fly ash from the QPL and conforming to AASHTO M 295 (ASTM C618).

Add the following subsection:

02030.15 Natural Pozzolans ‑ Furnish Class N natural pozzolans from the QPL and conforming to AASHTO M 295 (ASTM C618).

02030.50 Metakaolin ‑ Replace this subsection with the following:

02030.50 High Reactivity Pozzolans ‑ Furnish high-reactivity pozzolans from the QPL and conforming to AASHTO M 321.

SECTION 02040 – CHEMICAL ADMIXTURES

Comply with Section 02040, of the Standard Specifications.

SECTION 02050 ‑ CURING MATERIALS

Comply with Section 02050 of the Standard Specifications modified as follows:

02050.10 Liquid Compounds - Replace the paragraph that begins “Furnish liquid membrane-forming curing…“ with the following paragraph:

Furnish liquid membrane-forming curing compounds from the QPL and meeting the requirements of ASTM C309. Before use, submit a one quart sample from each lot for testing. Samples will be tested according to ODOT TM 721. Samples are not required for curing compounds used on Commercial Grade Concrete.

Supplemental Specifications:

Bid Items and Quantities

1) The quantities in the bid item list are intended to serve only as guide to bidders, and are not to be construed as a guarantee. All quantities are estimated, and are for bid purposes only. The quantity for each bid item includes all labor, equipment and materials for all activities associated with this project. The Oregon Department of transportation (ODOT) reserves the right to adjust, add, or delete quantities, as needed.

2) Contract bid items are limited to:

· Repair Corner: The lump sum bid item Repair Corner shall include all work necessary to complete described work in compliance with the project specifications. Repair Corner includes incidental work, including, but not limited to erosion control, grinding, patching, removal, and needed materials to make repairs. All other work described in project specifications to be paid under this bid item.

Within 10 work days of Notice to Proceed, Contractor will schedule a Contractor/Agency site meeting for each curb ramp location prior to beginning work. Purpose of pre-work site meetings is to reach agreement on work to be completed, and to identify and address issues of concern.

For each curb ramp location, after site meeting, and prior to beginning work Contractor shall submit for Agency approvals:

1) Product documentation on ODOT Qualified Products List (QPL) materials to be used.

2) Work plan and schedule

3) Traffic Control plan for each curb ramp in accordance with the 2016 version of the 2011 Oregon Temporary Traffic Control Handbook for Operations of Three Days or Less. http://www.oregon.gov/ODOT/Engineering/Docs_TrafficEng/OTTCH-v2011.pdf

4) Pedestrian and Bicycle accommodation plan that includes actions to be taken to:

a. Keep facilities used by pedestrians operating at existing levels of service or provide Temporary Pedestrian Access Routes (TPAR) that maintains the same level of existing service

b. Provide passage for bicyclists at the same level of existing service or provide a plan for accommodating bicycle passage