Attachment 2 Forest Service Supplemental Specifications.pdf

Table of Contents Preface

101 - Terms¸ Format¸ and Definitions

101.01 Meaning of Terms

101.03 Abbreviations

101.04 Definitions

102 - Bid¸ Award¸ and Execution of Contract

Delete Section 102

103 - Scope of Work

Delete Subsections 103.02, 103.03, 103.04, 103.05

104 - Control of Work

Delete Subsections 104.01, 104.02, 104.04

104.06 Use of Roads by Contractor

105 - Control of Material

105.02(b) Government-provided material stockpile

106 - Acceptance of Work

106.01 Conformity with Contract Requirements

106.02 Visual Inspection

107 - Legal Relations and Responsibility to the Public

Delete Subsection 107.05

108 - Prosecution and Progress

Delete Section 108

109 - Measurement and Payment

Delete Subsections 109.06, 109.07, 109.08, 109.09

109.01 Measurement of Work

109.02 Measurement Terms and Definitions

153 - Contractor Quality Control

153.03 Quality Control Plan

153.07 Records and control charts

153.04 (2) (a) Submittal Log

155 - Schedules for Construction Contracts

Delete Section 155

156 - Public Traffic

Section 156. – PUBLIC TRAFFIC

201 - Clearing and Grubbing

204 - Excavation and Embankment………………………………………………………………………………………………………………22

Section 204 Excavation and Embankment

207 - Earthwork Geotextiles

207.04 (b) Surface Preparation……………………………………………………………………………………………………………………….27

207.04(c)(1) First layer placement and compaction

301 - Untreated Aggregate Course…………………………………………………………………………….28

301.05 Compacting………………………………………………………………………………………………………………………………………..28

302A - Mudrock……………………………………………………………………………………………………………………………………………….29

303 - Road Reconditioning…………………………………………………………………………………………………………………………….32

314 - Stockpiled Mudrock………………………………………………………………………………………………………………………………33

314A - Existing Stockpiled Mudrock…………………………………………………………………………..35

625 - Turf Establishment………………………………………………………………………………………………………………………………..36

703 - Aggregate

703.05 Subbase, Base, Surface Course, and Screened Aggregate

704 - Soil…………………………………………………………………………………………………………. 40

704A Clay

Preface Preface_wo_03_26_2021

Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-14 for construction of National Forest System Roads.

101 - Terms¸ Format¸ and Definitions 101.01_National_11_9_2016

Add the following paragraph to Subsection 101.01:

101.01 Meaning of Terms.

Delete all references to the TAR (Transportation Acquisition Regulations) in the specifications.

Add the following to Subsection 101.03:

101.03 Abbreviations.

(a) Acronyms.

AGAR — Agriculture Acquisition Regulations

FSAR — Forest Service Acquisition Regulations

(f) Miscellaneous unit abbreviations.

MP — milepost location

STA station location

Make the following changes to Subsection 101.04:

101.04 Definitions.

Delete these definitions and replace the following:

Bid Schedule — The Schedule of Items.

Bridge — A structure, including supports, erected over a depression or an obstruction such as water along a road, a trail, or a railway and having a deck for carrying traffic or other loads.

Contractor — The individual or legal entity contracting with the Government for performance of prescribed work. In a timber sale contract, the contractor is the “Purchaser”.

Culvert — Any structure with a bottom, regardless of fill depth, depth of invert burial, or presence of horizontal driving surface, or any bottomless (natural channel) structure with footings that will not have wheel loads in direct contact with the top of the structure.

Drawings — (Public Works Contracts) Design sheets or fabrication, erection, or construction details submitted to the CO by the Contractor according to FAR Clause 52.236-21 Specifications and Drawings for Construction. Also refers to submissions and submittals.

Notice to Proceed — (Public Works Contracts) Written notice to the Contractor to begin the contract work.

Right-of-Way — A general term denoting (1) the privilege to pass over land in some particular line (including easement, lease, permit, or license to occupy, use, or traverse public or private lands), or (2) Real property necessary for the project, including roadway, buffer areas, access, and drainage areas.

Solicitation — (Public Works Contracts) The complete assembly of documents (whether attached or incorporated by reference) furnished to prospective bidders.

Add the following definitions:

Adjustment in Contract Price — “Equitable adjustment,” as used in the Federal Acquisition Regulations, or “construction cost adjustment,” as used in the Timber Sale Contract, as applicable.

Change — “Change” means “change order” as used in the Federal Acquisition Regulations, or “design change” as used in the Timber Sale Contract.

Forest Service — The United States of America, acting through the Forest Service, U.S. Department of Agriculture.

Mobilization – In general, the act of preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site. This shall include road signage required to provide safety to the public during work hours.

Mudrock – An aggregate/clay/water mixture that when mixed together in the specified quantities and compacted produces a base course material for sand roads/trails. A local term.

Neat Line — A line defining the proposed or specified limits of an excavation or structure.

Pioneer Road — Temporary construction access built along the route of the project.

Road Order — An order affecting and controlling traffic on roads under Forest Service jurisdiction. Road Orders are issued by a designated Forest Officer under the authorities of 36 CFR, part 260.

Shop Drawings — (Timber and Stewardship Contracts) Referred to as “Drawings” in FP-14, include drawings, diagrams, layouts, schematics, descriptive literature, illustrations, lists or tables, performance and test data, and similar materials furnished by Purchaser to explain in detail specific portions of the work required by the contract.

Add Figure 101-1—Illustration of road structure terms:

Figure 101-1—Illustration of road structure terms.

102 - Bid¸ Award¸ and Execution of Contract 102.00_National_11_9_2016

Delete Section 102 in its entirety.

Delete Section 102.

103 - Scope of Work 103.00_National_11_9_2016

Delete all of Section 103 except Subsection 103.01 Intent of Contract.

Delete Subsections 103.02, 103.03, 103.04, 103.05.

Add the following to Subsection 103 Intent of Contract.

103.02 DESCRIPTION

Base Item work for this project consists of pre-blading a designated section of NFSR 203 Circle Road in preparation of the furnishing, hauling, placing, and compaction of the mudrock base course. Once the mudrock base course is placed as specified, then complete a final blading of the work to provide a smooth-running surface.

Optional work for this project includes the construction of lead-off ditches and turn-outs (as specified) at locations as staked by the Government.

See Schedule of Items and the Drawings for more specific descriptions on quantities and construction details.

104 - Control of Work 104.00_National_11_9_2016

Delete Subsections 104.01, 104.02, and 104.04.

Delete Subsections 104.01, 104.02, 104.04.

104.06_National_11_9_2016

Add the following to Subsection 104.06:

104.06 Use of Roads by Contractor.

The Contractor is authorized to use roads under the jurisdiction of the Forest Service for all activities necessary to complete this contract, subject to the limitations and authorizations designated in the Road Order(s) or described in the contract, when such use will not damage the roads or national forest resources, and when traffic can be accommodated safely.

105 - Control of Material 105.02_National_11_1_2016

Delete Subsection 105.02(b) and replace with the following:

105.02(b) Government-provided material stockpile.

This material is found near Milepost 0.4 on the Circle Road and shall be used to repair damage to Circle Road between MP 0.00 and 5.92 as approved by the Contracting Officer. If used by the contractor, there will be no cost to the Government.

105.05_National_6_29_2020

106 - Acceptance of Work 106.01_National_7_18_2017

Delete Subsection 106.01 and replace with the following:

106.01 Conformity with Contract Requirements.

Follow the requirements of FAR Clause 52.246-12 Inspection of Construction.

References to standard test methods of AASHTO, ASTM, GSA, and other recognized standard authorities refer to the methods in effect on the date of solicitation for bids.

Perform all work to the lines, grades, cross-sections, dimensions, and processes or material requirements shown on the plans or specified in the contract.

Incorporate manufactured materials into the work according to the manufacturer’s recommendations or to these specifications, whichever is more strict.

Plan dimensions and contract specification values are the values to be strived for and complied with as the design values from which any deviations are allowed. Perform work and provide material that is uniform in character and reasonably close to the prescribed value or within the specified tolerance range. The purpose of a tolerance range is to accommodate occasional minor variations from the median zone that are unavoidable for practical reasons.

The Government may inspect, sample, or test all work at any time before final acceptance of the project. When the Government tests work, copies of test reports are furnished to the Contractor upon request. Government tests may or may not be performed at the work site. If Contractor testing and inspection is verified by the Government, the Contractor’s results may be used by the Government to evaluate work for acceptance. Do not rely on the availability of Government test results for process control.

Acceptable work conforming to the contract will be paid for at the contract unit bid price. Four methods of determining conformity and accepting work are described in Subsections 106.02 to 106.05 inclusive. The primary method of acceptance is specified in each Section of work. However, work may be rejected at any time it is found by any of the methods not to comply with the contract.

Remove, repair, or replace work that does not conform to the contract, or to prevailing industry standards where no specific contract requirements are noted. Removing, repairing, or replacing work; providing temporary traffic control; and any other related work to accomplish conformity will be at no cost to the Government.

(a) Disputing Government test results. If the accuracy of Government test results is disputed, promptly inform the Contracting Officer. If the dispute is unresolved after reasonable steps are taken to resolve the dispute, further evaluation may be obtained by written request. Include a narrative describing the dispute and a proposed resolution protocol that addresses the following:

1. Sampling method;

2. Number of samples;

3. Sample transport;

4. Test procedures;

5. Testing laboratories;

6. Reporting;

7. Estimated time and costs; and

8. Validation process.

If the evaluation requires additional sampling or testing be performed, mutually agree with the Government on witnessing procedures and on sampling and testing by a third party laboratory. Use a third party laboratory accredited by the AASHTO accreditation program. Provide proof of the laboratory’s accreditation for the test procedures to be used. Do not use the same laboratory that produced the disputed Government test results or that produced the test results used as a basis for the dispute.

The Contracting Officer will review the proposed resolution protocol and may modify it before final approval and execution.

The Government will use the approved resolution protocol test results to determine the validity of the disputed testing. If the Government test results are validated, the Contractor will be responsible for all costs associated with developing and performing the resolution protocol. If the Government test results are not validated, the Government will be responsible for all costs associated with developing and performing the resolution protocol.

If the validity of the Government test results cannot be determined, the Contractor and Government will equally share all costs associated with developing and carrying out the resolution protocol.

(b) Alternatives to removing and replacing non-conforming work. As an alternative to removal and replacement, the Contractor may submit a written request to:

1. Have the work accepted at a reduced price; or

2. Be given permission to perform corrective measures to bring the work into conformity.

The request must contain supporting rationale and documentation. Include references or data justifying the proposal based on an evaluation of test results, effect on service life, value of material or work, quality, aesthetics, and other tangible engineering basis. The CO will determine disposition of the nonconforming work.

106.02_National_11_9_2016

Delete Subsection 106.02 and replace with the following:

106.02 Visual Inspection.

Acceptance is based on visual inspection of the work for compliance with the specific contract requirements.

Use prevailing industry standards in the absence of specific contract requirements or tolerances.

107 - Legal Relations and Responsibility to the Public 107.05_National_7_18_2017

Delete Subsection 107.05.

Delete Subsection 107.05.

108 - Prosecution and Progress 108.00_National_11_9_2016

Delete Section 108 in its entirety.

Delete Section 108.

109 - Measurement and Payment 109.00_National_11_9_2016

Delete Subsections 109.06, 109.07, 109.08, and 109.09:

Delete Subsections 109.06, 109.07, 109.08, 109.09.

Delete the third paragraph and Table 109-1 of Subsection 109.01 and replace with the following:

109.01 Measurement of Work.

Take measurements as described in Subsection 109.02 unless otherwise modified by the Measurement Subsection of the section controlling the work being performed. Table 109-1 indicates the accuracy required for quantities of the various pay units used in the Schedule of Items. Use this guide to determine the decimal placement in the final payment.

Table 109-1

Decimal Accuracy of Quantities for Final Payment

Pay Item Level of Precision Linear Foot 1

Exception--Timber, Steel, and concrete Piles 0.1 Station 0.1 Mile 0.01 Square Foot 0.1 Square Yard 0.1 Each 1 Acre 0.01 Gallon 1 M-Gals (1,000 Gals). 0.1 Cubic Yard (in-place) 1

Exception--Structure Excavation; Sheathing Materials; Bedding, Bed Course, and Backfill Materials; Gabions;

0.1

Exception--Concrete; Masonry 0.01 Pound 1 Ton 0.1

Exception--Calcium Chloride;

Sodium Chloride; Hydrated Lime;

Bituminous Materials; Pavements;

Bed Course Materials

0.01

Hour 0.1

MFBM 0.01

Station Yard 1 Cubic Yard Mile 1 Ton Mile 1

109.02_National_11_9_2016

Add the following sentence to Subsection 109.02(b):

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Contract quantities will be adjusted only when there are errors in the original design of 15% or more.

Add the following sentence to Subsection 109.02(c)(1):

(d) Contract quantity shall be measured as compacted cubic yards in-place.

153 - Contractor Quality Control 153.03_National_11_1_2016

Add the following paragraph to the end of Subsection 153.03(b):

153.03 Quality Control Plan.

(b) Quality Control Procedures.

Submit written proposals for approval of alternate AASHTO or State approved test methods. Alternate methods may be allowed based on documented equivalence to the specified method.

153.10_Regional_5_31_2018

Add the following Subsection:

153.04 (2) (a) Submittal Log At a minimum the contractor shall provide project submittals as shown on the Submittal Log below. Submittal requirements are listed in the Standard Specifications, Supplemental Specifications, and Plans.

Submittal Log

Log No.

Indirect payment to Pay

Item(s) Description of Submittal Type of

Submittal

Requirement found in

Specification No.

/Drawings

Additional Specification References

1 207.01 Non-woven geosynthetic separation fabric

Manufacturer’s Spec Sheet 207.02

2 302A.01 Aggregate and clay gradation reports

Written certification 302A.02

3 Traffic Control plan Written 156

153.07_National_11_1_2016

Delete Subsection 153.07 and replace with the following:

153.07 Records and control charts.

Maintain complete testing and inspection records by pay item number and make them accessible to the Contracting Officer.

155 - Schedules for Construction Contracts 155.00_National_11_9_2016

Delete Section 155 in its entirety.

Delete Section 155.

156 - Public Traffic 156.00_National_2_5_2019

Delete Section 156 in its entirety and replace with the following:

Description

156.01 This work consists of controlling and protecting public traffic adjacent to and within the project.

Material

156.02 Conform to the MUTCD and the following Sections and Subsections:

Traffic Signing and Marking Material 718

Temporary plastic fence 710.11

Construction Requirements

156.03 General. Accommodate traffic according to MUTCD, an approved traffic control plan, and this section.

Perform work in a manner that ensures safety and convenience of the public. Unless otherwise provided for in Table 156-1, keep existing roads open to all traffic during road improvement work, and maintain them in a condition that will adequately accommodate traffic. Accommodate public traffic on roads adjacent to and within the project until the project is accepted according to Subsection 106.07(b).

A final determination will be made at the pre-work meeting on type of road closure that will be used for Circle Road.

Submit traffic control plan at least 5 days prior to intended use. Perform no work that interferes or conflicts with traffic or existing access to the roadway surface until a traffic control plan has been approved.

Post construction signs and traffic control devices in conformance with MUTCD and Forest Service EM 7100-15.

All required signs will be in place and approved prior to beginning work on project.

156.04 Temporary Traffic Control. Install and maintain temporary traffic control devices adjacent to and within the project as required by the approved traffic control plan and the MUTCD. Install and maintain traffic control devices as follows:

(a) Furnish and install traffic control devices before the start of construction operations.

(b) All detours outside of clearing limits will be approved in writing by the Contracting Officer as part of the traffic control plan.

(c) Install only those traffic control devices needed for each stage or phase.

(d) Relocate temporary traffic control devices as necessary.

(e) Remove devices that no longer apply to the existing conditions.

(f) Immediately replace any device that is lost, stolen, destroyed, or inoperative.

(g) Keep temporary traffic control devices clean.

(h) Remove all temporary traffic control devices upon contract completion or when approved.

(i) When required, use flaggers certified by the American Traffic Safety Services Association, the National Safety Council, the International Municipal Signal Association, a state agency, or other acceptable organization. Perform the work described under MUTCD Part 6. Use type III, VII, VIII, or IX retroreflective sheeting on flagger paddles. Do not use flags. Flaggers must wear high visibility safety apparel as required by MUTCD 6E.02.

156.05 Temporary Closures. Road segments may be closed as shown in Table 156-1. The maximum consecutive days of closure shall be followed by a minimum number of consecutive days open to traffic as shown. Maintain traffic control devices during closure period(s). Appropriate barricades and signs will be erected and maintained as shown in the traffic control plan or as otherwise designated.

Prior to closing roads during construction, give written notice to the Contracting Officer at least 5 days in advance.

Table 156-1 Temporary Road Closures

Road Number From Terminus

To Terminus

Maximum Consecutive Days* of Closure

Minimum Consecutive Days Open

MP 0.00 at State

Hwy. 86b MP 7.60 5 2

*NFSR 203 Circle Road shall re-open at the end of each workday. Intent of Contract is to close NFSR 203 to the public during the workweek, and open during the weekend. However, the roadway must be kept in such a way to allow any emergency vehicular traffic to pass as needed. This is as approved by the Contracting Officer.

156.06 Acceptance. Public traffic work will be evaluated under Subsection 106.02.

Measurement and Payment

156.07 Do not measure Public Traffic for payment. Payment for contract work is provided indirectly. See Subsection 109.05.

201 - Clearing and Grubbing 201.06_National_2_22_2018

Delete Subsection 201 in its entirety and replace the following:

Description

201.01 This work consists of clearing brush and grass within the limits of the work during the construction of the Optional Items (if selected). Work includes removing limbs that interfere with construction equipment as the work progresses.

Construction Requirements

201.03 General. Do not damage vegetation designated to remain. If damage occurs, repair or replace the vegetation in an acceptable manner.

201.04 Clearing. Within the clearing limits, clear brush, downed timber, and other vegetation as follows:

(a). Do not cut trees outside the excavation without consulting with the Contracting Officer.

(b). Trim tree branches that extend over the Optional Item work areas and interfere with construction equipment as the work progresses. Trim according to accepted tree surgery practices.

201.05 Grubbing. It is anticipated there will be no grubbing on this project.

201.06 Disposal. Brush and other materials removed in the process of construction of the Optional Items (if selected) shall be left on-site as designated by the Contracting Officer.

201.07 Acceptance. Clearing. Will be evaluated under Subsection 106.02.

Measurement

201.08. There is no measurement for this work.

Payment

201.09 This work will be paid at the contract price per unit of measurement for the Optional Items (if selected) pay items in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See

204 - Excavation and Embankment

Delete Section 204 in its entirety and replace with the following:

Description

204.01 This work consists of constructing embankments on the Optional Items (turnouts and lead-off ditches, if selected) as SHOWN ON THE DRAWINGS. The turnouts and lead-off ditches shall be located by the Government.

The earthen material consists of mostly a coarse sand with marginal amounts of a clay-type material mixed in.

204.02 Definitions.

(a) Excavation. Excavation consists of the following:

(1) Borrow excavation. The intent is for the turnouts to be located where there is little to no additional borrow excavation needed.

(2) Lead-off ditches. Material excavated from construction of lead-off ditches shall be used to form a berm on the downward side of the ditch to keep any run-off within the ditch.

(b) Embankment construction. Embankment construction consists of placing and compacting roadway or borrow excavation. This work includes:

(1) Constructing turnouts. The intent is for the turnouts to be located where there is little to no additional embankment needed

Material

204.03 Conform to the following Subsections:

Unclassified borrow 704.06

Water 725.01(c)

204.04 Roadway Excavation.

(a) Drainage Feature. Drainage feature includes construction of lead-off ditches. Excavate on a uniform grade to insure positive drainage.

Do not disturb native soils or vegetation outside the construction limits. Dispose of unsuitable or excess excavation material according to Subsection 204.13.

Shape to drain and compact the work area to a uniform cross-section at the end of each day's operations.

204.05 Drainage Features (Lead-off Ditches). Slope, grade, and shape all drainage features. Maintain all drainage features in an open condition and without sticks, and other debris.

Form furrow ditches by plowing or using other acceptable methods to produce a continuous furrow. Place excavated material on the downhill side so the bottom of the ditch is approximately 18 inches (450 millimeters) below the crest of the loose material. Clean the ditch using a hand shovel or other suitable method as needed.

Shape to provide drainage without overflow.

204.06 Sloping, Shaping, and Finishing. Complete drainage features before placing mudrock base course, if Option Item is selected). Slope, shape, and finish as follows:

(a) Maintain positive ditch drainage.

Acceptance.

204.07 Road width tolerance shall be +1.0 foot.

Excavation and embankment construction will be evaluated under Subsections 106.02 and 106.04.

Measurement

204.08 Measure the Section 204 pay items listed in the bid schedule according to Subsection 109.02 and the following as applicable:

(a) Roadway excavation. Measure roadway excavation in its original position as follows:

(1) Option Bid Item.

(a) Lead-off ditch excavation, estimated 300 LF (Option Item is for 300 LF).

(2) Do not include the following in roadway excavation:

(a) Overburden and other spoil material from borrow sources.

(b) Material used for purposes other than required.

(c) Material excavated when rounding cut slopes.

(d) Preparing foundations for embankment construction.

(e) Slide or slip-out material attributable to the Contractor's method of operation.

(f) Material excavated outside the established slope limits; and

(g) Road pioneering for the convenience of the Contractor.

(b) Embankment construction. Measure embankment construction in its final position. Do not make deductions from the embankment construction quantity for the volume of minor structures.

(1) Include the following work in embankment construction on a per mile basis:

(a) Turnout construction:

(i). Circle Road - 6 @ 45 CY each of Mudrock and geotextile fabric only.

(c) Drainage features. Measurement includes all excavation, embankment, shaping, and grading necessary for a completed drainage feature (lead-off ditch).

204.16 The accepted quantities will be paid at the contract price per unit of measurement for the Section 204 pay items listed in the bid schedule, Option Item 20401 Excavation and Embankment and 20405 Drainage Excavation, Lead-Off Ditch (if selected). Payment will be full compensation for the work prescribed in this Section. See

207 - Earthwork Geotextiles

Add the following to the end of Subsection 207.02:

Geotextile shall be Mirafi 160N, or equal, and conform to Table 714-1: Separation and Stabilization Geotextile and Geotextile Filter Requirements, for a Class 2 Nonwoven Geotextile. Geotextile shall be 15 feet in width.

Delete third sentence of Subsection 207.04 (c)(1) and replace with the following:

207.04(c)(1) First layer placement and compaction.

Spread the end-dump pile of Mudrock base material over the geosynthetic fabric. Maintain minimum lift thickness at equal or greater than final compacted thickness as specified in Specification 302A.04 Placing Mudrock.

Delete second paragraph of Subsection 207.04 (c)(1) and replace with the following:

Compact according to Subsection 301.05 (a). Do not use sheepsfoot and studded compaction equipment.

Delete the first sentence of Subsection 207.09 and replace with the following:

207.09 Measurement. Measurement for this item shall be considered incidental to Option Item 20401 for the Circle Road as listed in the bid schedule.

Delete Subsection 207.10 Payment and replace with the following:

207.10 Payment. Payment shall be incidental to pay item Option Item 20401 (if selected) as listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See

301 – UNTREATED AGGREGATE COURSES

Delete Subsection 301.05 and replace with the following:

301.05 Compacting.

Compact each layer full width. Roll from the sides to the center, parallel to the centerline of the road.

Use the following compaction methods as specified and as approved by the Contracting Officer:

(a) Compaction A. Operating spreading and hauling equipment over the full width of the travel-way.

(b) Compaction B. Operate rollers and compact as specified in Subsection 204.10 (a) 1.

(c) Compaction C. Moisten or dry the mudrock mixture to a uniform moisture content between 7 and 10 percent based on total dry weight of the mixture. Operate rollers and compact as specified in Subsection 204.10 (a).

For all compaction methods, blade the surface of each layer during the compaction operations to remove irregularities and produce a smooth, even surface (as needed).

(a) For compacting the Mudrock base material on the roadway and turnouts, Compaction A shall be used. Other compaction methods may be used as approved by the Contracting Officer.

302A – MUDROCK

New Specification:

Description

302A.01 This work consists of furnishing, hauling, and placing a mixture of crushed, graded aggregate and clay (locally called Mudrock) and placing it at the specified compacted depths on the Circle Road roadbed at the designated location.

Material

302A.02 Conform to the following Subsections:

Crushed Aggregate (grading designation C) 703.05 Water 725.01(c) Clay 704A

The Mudrock base material consists of 85% crushed aggregate, 15% clay, and 7-10% water blended together to form a uniform mixture. This mixture may be purchased commercially or mixed together on-site. The mixture can have a minus of 5% for the aggregate and clay as long as the percentage comes out at 100%.

The local clay material may be located on private lands. The clay shall be pulverized to the extent 90% of the material will pass the ½” sieve. Provide a gradation screening of the material to be used to see what the percentage of sand has infiltrated the clay. The clay to sand mixture shall be 5:1 or as approved by the Contracting Officer. Provide a sample for the Contracting Officer to evaluate.

Once the Mudrock base material is ready to place on the roads, it is the responsibility of the Contractor to maintain the percentage of water as needed to hold the integrity of the mixture together. There will be no additional pay for water needed.

302A.03 Preparing Surface.

(a) Roadway Base Course. Prepare the existing designated section of roadbed by completing a pre-blading by shaping to a smooth and even surface as SHOWN ON THE DRAWINGS.

302A.04 Placing Mudrock.

(a) Roadway Base Course. Spread and shape in uniform layers not to exceed 4 inches compacted depth thickness as SHOWN ON THE DRAWINGS.

Shape and smooth at the end of each workday to allow passage of passenger vehicles.

302A.05 Compacting and Finishing Mudrock

(a) Roadway Base Course. Compact each layer according to Subsection 301.05 (a). Shape and finish the surface to the typical road section as SHOWN ON THE DRAWINGS.

Correct defective areas by loosening the material, adding or removing mudrock base material, reshaping and compacting.

302A.06 Acceptance.

(a) Crushed aggregate will be evaluated under Subsections 106.02 and 106.03. Submit a production certification for gradation.

(b) Clay material will be evaluated under Subsections 106.02 and 106.03. Submit a production certification for gradation.

(c) Construction of Mudrock base material will be evaluated under Subsections 106.02 and

106.04. Compaction shall be evaluated under Subsection 301.05 (a).

302A.07 Measure the Section 302A01 pay item listed in the bid schedule according to Subsection

109.02 (c) (1), cubic yard compacted in-place.

302A.08 The accepted quantities will be paid at the contract price per unit of measurement for the Section 302A01 pay item in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

314A – EXISTING STOCKPILED MUDROCK

This is a new specification.

Description

314A.01 This work consists of placing Government supplied Mudrock base course material, as approved by the Contracting Officer, on Circle Road between MP 0.00 and MP 5.92. It is to be used only for this designated segment of Circle Road for damage incurred during the hauling of Mudrock base course material for the 2022 Circle Road Resurfacing work.

Material

314A.02 Use the existing stockpile material near MP 0.4 on the Circle Road. It is not know how much material will remain prior to the

314A.03 General. The amount of Mudrock base course material placed at each damage site (if designated) shall be approved by the Contracting Officer. See Subsection 302A.03, 302A.04, and 302A.05 for construction requirements.

314A.04 Stockpile Site. There is an existing stockpile site with the Mudrock base course material.

314A.05 Stockpile. Utilize as much of the existing stockpile material as possible. Do not lose material outside the existing stockpile area in a manner it is not retrievable.

314A.06 Acceptance. The existing Mudrock base course material is acceptable to be utilized as stated in Subsection 314A.01.

314A.07 The amount of Mudrock base course material in the existing stockpile is estimated at 60 cubic yards. However, it may be less by the time this work is commencing.

314A.08 There is no payment schedule for this work as the material is available for use if the existing roadway is damaged during the commencement of this project.

703 - Aggregate 703.05_National_3_17_2021

Delete 703.05 and replace with the following:

703.05 Subbase, Base, Surface Course, and Screened Aggregate.

(a) Base aggregate. Grading Designation C. Furnish hard, durable particles or fragments of crushed stone or crushed gravel conforming the following:

(1) Gradation Table 703-2

(2) Liquid limit, AASHTO T 89 25 max.

(3) Plastic limit, AASHTO T 90 Nonplastic

(4) Los Angeles abrasion, AASHTO T 96 40% max.

(5) Sodium sulfate soundness loss (5 cycles), 12% max.

AASHTO T 104

(6) Durability index (coarse), AASHTO T 210 35 min.

(7) Durability index (fine), AASHTO T 210 35 min.

(8) Fractured faces, ASTM D 5821 50% min.

(9) Free from organic matter and lumps or balls of clay

Do not use material that breaks up when alternately frozen and thawed or wetted and dried.

Obtain the aggregate gradation by crushing, screening, and blending processes as necessary. Fine aggregate, material passing the No. 4 sieve, shall consist of natural or crushed sand and fine mineral particles.

This material shall be used with clay material to form the required Mudrock base course mixture.

Delete Table 703-2 and replace with the following:

T ab le

-2

T ar ge t V al ue

R an ge s f or S ub ba se a nd B as e

G ra da tio n

Pe rc en t b y M as s P as si ng D es ig na te d Si ev e

(A A

SH

T

O T an d

T

1)

G ra di ng

D es ig na tio n

E (B as e)

(6

(6

(4

4.

7.

(3

T he v al ue in th e pa re nt he se s i s t he a llo w ab le d ev ia tio n

) f ro m th e ta rg et v al ue s..

D (B

(6

(6

(6

(4

4.

7.

(3

C (B

(6

(6

4.

–7 .0

(3

B (S ub ba se

(8

4.

.0 (4

A (S ub ba se

(7

(6

(4

4.

8.

(3

Si ev e Si ze

2½ in ch

1½

3/

1/

3/

N o.

N o.

N o.

704 – SOIL

Add this Subsection:

704A.01 Clay Binder.

Clay material will be mixed with the specified aggregate and water to form the Mudrock base mixture.

It may be found locally on private lands. It is the responsibility of the Contractor to acquire the clay material. Complete a sieve analysis to determine the amount of sand mixed in with the clay. The clay to sand mixture shall be 5:1 or as approved by the Contracting Officer.