ATT A SPECIAL PROVISIONS AND SPECIFICATIONS.doc

CARPENTERVILLE HWY255: MP 355.49 CULVERT REPLACEMENT

ATTACHMENT A

SPECIAL PROVISONS & SPECIFICATIONS FOR

CARPENTERVILLE HWY255: MP355.49 CULVERT REPLACEMENT

SCOPE

The work to be completed under this Contract, located on the Carpenterville Highway (HWY255), at MP355.49, in Curry County, OR, consists of supplying the materials, equipment, labor and incidentals required to perform the following tasks as described in the Contract plans and specifications:

1. Provide and install Temporary Work Zone Traffic Control.

2. Remove and dispose existing 18” CMP Culvert.

3. Install new 24” Double Walled Corrugated HDPE pipe. New 24” Double Walled Corrugated HDPE pipe will be furnished by ODOT. Slope ends of pipe similar to RD318, Case1. Backfill according to RD300 and RD302.

4. Install new Loose Riprap, Class 200 around both inlet and outlet locations. Riprap will be furnished by ODOT.

5. Construct Trench Resurfacing.

6. Furnish and install culvert drainage markers.

7. Perform additional and incidental work as detailed in the Contract plans and specifications and as directed.

Standard Drawings

RD300…………………………………….Trench Backfill, Bedding, Pipe Zone and Multiple Installations RD302…………………………………….Street Cut RD317…………………………………….Culvert Embankment Protection and Riprap Pads RD318…………………………………….Sloped Ends for Concrete Pipe RD398…………………………………….Culvert ID Marker TM810…………………………………….Temporary Pavement Markings

PROJECT INFORMATION

General information pertaining to this project may be obtained from the following:

Jessica Spann, Project Manager

307 Highway 42

Coquille, OR

Phone: (541) 396-1143 Email: Jessica.SPANN@odot.state.or.us

APPLICABLE STANDARD SPECIFICATIONS AND SPECIAL PROVISIONS

Silence of Specifications: The apparent silence of the specifications as to any detail, or the apparent omission of a detailed description concerning any point, shall be regarded as meaning that the highest value commercial practices are to prevail and that only materials and workmanship of first quality are to be used.

SECTION 00210 – MOBILIZATION

Comply with Section 00210 of the Standard Specifications modified as follows:

Construction

00210.40 Mobilization – delete the last bullet of the bullet list. Obtaining and maintaining access to Doc Express®, and using Doc Express® to submit documents will not be required on this project.

Payment

00210.90 Payment – delete the last sentence in this subsection.

SECTION 00220 - ACCOMMODATIONS FOR PUBLIC TRAFFIC

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

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

· When performing trench excavation or other excavation across or adjacent to a Traffic Lane on a roadway having a pre-construction posted speed greater than 35 mph, backfill the excavation, install surfacing, and open the roadway to traffic by the end of each work shift. Install a "BUMP" (W8-1-48) sign approximately 100 feet before the backfilled area and a "ROUGH ROAD" (W8-8-48) sign approximately 500 feet ahead of the "BUMP" sign. If this requirement is not met, maintain all necessary lane or shoulder closures and provide additional TCM, including flagging, at no additional cost to the Agency. Do not use temporary steel plating to reopen the roadway.

SECTION 00221 - COMMON PROVISIONS FOR WORK ZONE TRAFFIC CONTROL

Comply with Section 00221 of the Standard Specifications modified as follows:

Description

00221.00 Scope - Add the following:

Provide work zone traffic control measures conforming to The Oregon Department of Transportation’s Temporary Traffic Control Handbook for Operations of Three Days OR Less, December 2011. Copies of this handbook can be accessed via the internet under “Publications” on the Traffic Engineering and Operations Section web site (Highway Division, Oregon Department of Transportation) at:

2011 ODOT TEMPORARY TRAFFIC CONTROL HANDBOOK FOR OPERATIONS OF 3 DAYS OR LESS

00221.06 Traffic Control Plan – Replace this subsection, except for the subsection number and title, with the following:

The Contractor must submit a Traffic Control Plan (TCP) and obtain approval from the Oregon Department of Transportation Project Manager before work may commence on the Project.

SECTION 00225 – TEMPORARY PAVEMENT MARKINGS

Comply with Section 00225 of the Standard Specifications modified as follows:

Payment

00225.90 Payment – delete the following Pay item from the Pay Item list:

(b) Temporary Flexible Pavement Markers…………………………………Each

No separate of additional payment will be made for Temporary Flexible Pavement Markers as they are considered incidental to the asphalt concrete paving work required under Section 00744.

The Contractor shall install and maintain temporary flexible pavement markings at no additional cost to the Agency until ODOT forces can restore any permanent pavement markings removed during paving operations.

SECTION 00280 - EROSION AND SEDIMENT CONTROL

Comply with Section 00280 of the Standard Specifications modified as follows:

Measurement

00280.80 Measurement – No separate measurement will be made for erosion control measures.

Payment

00280.90 Payment – No separate of additional payment will be made for erosion and sediment control plan.

SECTION 00290 – ENVIRONMENTAL PROTECTION

Comply with Section 00290 of the Standard Specifications.

SECTION 00310 - REMOVAL OF STRUCTURES AND OBSTRUCTIONS

Comply with Section 00310 of the Standard Specifications.

SECTION 00390 – RIPRAP PROTECTION

Comply with Section 00390 of the Standard Specifications.

SECTION 00405 – TRENCH EXCAVATION, BEDDING, AND BACKFILL

Comply with Section 00405 of the Standard Specifications.

SECTION 00445 – SANITARY, STORM, CULVERT, SIPHON, AND IRRIGATION PIPE

Comply with Section 00445 of the Standard Specifications.

SECTION 00495 – TRENCH RESURFACING

Comply with Section 00495 of the Standard Specifications.

SECTION 00640 – AGGREGATE BASE AND SHOULDERS

Comply with Section 00640 of the Standard Specifications.

SECTION 00730 – EMULSIFIED ASPHALT TACK COAT

Comply with Section 00730 of the Standard Specifications modified as follows:

00730.11 Emulsified Asphalt – In the paragraph that begins “Obtain samples according to AASHTO T 40…” replace the words “AASHTO T 40” with the words “AASHTO R 66”.

00730.90 Payment – Replace this subsection, except for the subsection number and title, with the following:

No separate or additional payment will be made for Emulsified Asphalt tack coat. Approximately 1 Ton of Emulsified Asphalt in tack coat will be required on this Project.

SECTION 00744 – ASPHALT CONCRETE PAVEMENT

Comply with Section 00744 of the Standard Specifications modified as follows:

00744.11(a) Asphalt Cement - Add the following to the end of this subsection:

Provide Level 3, ½ inch dense grade asphalt cement for this Project.

00744.16 Sampling and Testing - Replace this subsection, except for the subsection number and title, with the following:

For each 1,000 Tons of placement, have a CAT I perform a minimum of one of each of the following test methods as modified in the MFTP:

Asphalt Content - AASHTO T 308 with ODOT TM 323 determined Calibration Factor

Gradation - AASHTO T 30

Mix Moisture - AASHTO T 329

Maximum Specific Gravity - AASHTO T 209

Field Compacted Gyratory Specimens - ODOT TM 326

When less than 1,000 Tons of mix is placed in a Day, perform a minimum of one series of tests per Day. Provide test results to the Engineer by the middle of the following work shift. The Engineer may waive the requirement for any of AASHTO T 308, AASHTO T 30, AASHTO T 329, and ODOT TM 326 on a daily basis. The Engineer may waive the requirement for AASHTO T 209 when less than 500 Tons of ACP is placed in a single work shift.

Provide samples or split samples to the Engineer when requested.

00744.17 Acceptance - Replace this subsection, except for the subsection number and title, with the following:

If the test result for each mix gradation constituent, asphalt content, and density measurement is within the specification limits, the material will be accepted. If the asphalt content, one or more gradation constituents, or the density measurement are not within the specification limits, the material that is not within the specification limits will be accepted according to 00150.25.

00744.41 Mixing Temperature - Replace the table with the following:

Temperature, °F

Type Maximum Minimum Behind at Mixer Paver

HMAC

WMAC

00744.44(b) Drop-Offs - Replace the bullet that begins “Provide warning signs and markings…” with the following bullet:

· Provide warning signs and markings according to Sections 00221, 00222, 00224 and 00225 where abrupt or sloped edge drop-offs greater than 1 inch in height occur.

00744.49 Compaction - Replace the paragraph that begins "Determine compliance with…" with the following paragraph:

Determine compliance with density Specifications by random testing of the compacted surface with calibrated nuclear gauges. Determine the density by averaging QC tests performed by a CDT with the nuclear gauge operated in the backscatter mode according to AASHTO T 355 at one random location for each 100 Tons of asphalt concrete placed, but take no less than 10 tests each shift. Do not locate the center of a density test less than 1 foot from the Panel edge. Calculate MAMD according to ODOT TM 305. The Engineer may waive compaction testing requirements when less than 500 Tons of ACP is placed in a single work shift.

Add the following subsection:

00744.51 Opening Sections to Traffic - Schedule work so that, during the same shift, the surfaces being paved are paved full width and length through the wearing Course before opening to traffic.