Attachment_2_-_NewsomeTrailBridge_FSSS_Final_103.pdf

i

FOREST SERVICE

SUPPLEMENTAL SPECIFICATIONS

FOR

NEWSOME CREEK TRAIL BRIDGE

ROAD NO. 825 – M.P. 0.0

U.S.D.A. Forest Service, Region 1 Nez Perce - Clearwater National Forests

Red River Ranger District Idaho County, Idaho

Prepared by:

GREAT WEST ENGINEERING

2501 Belt View Drive

Helena, MT 59601

Table of Contents Preface

101 - Terms¸ Format¸ and Definitions

102 - Bid¸ Award¸ and Execution of Contract

103 - Scope of Work

104 - Control of Work

105 - Control of Material

106 - Acceptance of Work

107 - Legal Relations and Responsibility to the Public

108 - Prosecution and Progress

109 - Measurement and Payment

152 - Construction Survey and Staking

153 – Contractor Quality Control

155 - Schedules for Construction Contracts

157 - Soil Erosion and Sediment Control

201 - Clearing and Grubbing

204 - Excavation and Embankment

208 - Structure Excavation and Backfill for Selected Major Structures

251 - Riprap

272 – Geocell Abutment Stabilization

553A – Precast Concrete Structures

622 – Rental Equipment

703 - Aggregate

736 – Geocell

Preface Preface_wo_07_11_2017

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.

101.03_National_11_9_2016

Add the following to Subsection 101.03:

101.03 Abbreviations.

(a) Acronyms.

AGAR — Agriculture Acquisition Regulations

AFPA — American Forest and Paper Association

FSAR — Forest Service Acquisition Regulations

MSHA — Mine Safety and Health Administration

NESC — National Electrical Safety Code

WCLIB — West Coast Lumber Inspection Bureau

(f) Miscellaneous unit abbreviations.

MP — milepost location ppm — parts per million volume

STA station location

101.04_National_11_9_2016

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.

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.

Purchaser — The individual, partnership, joint venture, or corporation contracting with the Government under the terms of a Timber Sale Contract and acting independently or through agents, employees, or subcontractors.

Protected Streamcourse — A drainage shown on the plans or timber sale area map that requires designated mitigation measures.

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.

Utilization Standards — The minimum size and percent soundness of trees described in the specifications to determine merchantable timber.

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.

105.02_Project_12_21_2018

Add the following paragraph to the bottom of Subsection 103.01:

The project consists of the construction of a new 60’ (centerline to centerline) span by 7’ wide glued-laminated timber stringer trail bridge with a timber deck and precast concrete foundations. Ancillary work to repair an upstream in-stream rock grade control structure is also included. The project site is located on Forest Service Trail No. 825, MP 0.0 and the bridge crosses Newsome Creek. Improvements consist of but are not limited to: structure excavation/backfill, geocell abutment stabilization, precast concrete grade beams, supply and installation of treated timber trail bridge, placement of riprap, aggregate surfacing, embankment construction, kiosk system improvements, and in-stream rock grade control/bank improvements.

The project site is located in the Red River Ranger District of the Nez Perce-Clearwater National Forests, approximately 10 miles northwest of Elk City in Idaho County, Idaho (Section 5, Township 29 North, Range 7 East). Refer to the location map on the title sheet of the plans.

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_Project_12_28_2018

Add the following to Subsection 105.02(a):

105.02(a) Government-provided sources.

Government-provided sources for this project are identified as follows:

(1) Government-provided mandatory sources.

Pay Item Description Material source number or name

20417 Trail Embankment Source adjacent to Road 1858 approximately 1.4 miles north of project site, as directed by CO.

62403 Topsoil Source adjacent to access road off Road 1858, as shown in the map below. Road improvements to the access road will be necessary and will include clearing of woody debris and removal of drainage dips. Once topsoil has been removed, site restoration to pre-existing conditions will occur. All topsoil hauling, access road clearing and restoration included in 62403 bid item.

Topsoil Access Map

105.02_National_11_1_2016

Add the following to Subsection 105.02c:

105.02(c) Contractor-located sources.

All material (e.g., soil, gravel, sand, borrow, aggregate, etc.) transported onto National Forest System land or incorporated into the work shall be weed-free. The Contracting Officer may request written documentation of methods used to determine the weed-free status of any and all materials furnished by the contractor. Contractor-provided expertise and methods to establish weed-free status must be appropriate for the weeds of concern in the local area. The following applies to this contract:

A Forest Service weed specialist will inspect proposed sources to determine weed-free status. Provide the Contracting Officer written notification of proposed material sources 14 days prior to use. Written approval of the specific source will be provided to the contractor by the CO. If weed species are present in the proposed source, appropriate mitigation measures may allow conditional use of the source as required by the Contracting Officer.

106 - Acceptance of Work 106.01_National_11_9_2016

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.

When standard manufactured items are specified (such as fence, wire, plates, rolled shapes, pipe conduits, etc., that are identified by gauge, unit mass, section dimensions, etc.), the identification will be considered to be nominal masses or dimensions. Unless specific contract tolerances are noted, established manufacturing tolerances will be accepted.

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 CO. 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 CO 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 107.02_Project_12_5_2018

Add the following to Subsection 107.02:

107.02 Protection and Restoration of Property and Landscape.

All work within the wetted perimeter of the stream must occur between July 1st and August 15th.

107.05_National_11_9_2016

Delete Subsection 107.05.

107.05 Responsibility for Damage Claims.

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.

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.

109.10_Project_11_14_2018

Add the following Subsection 109.10:

109.10 Methods of Measurement.

One of the following methods of measurement for determining final payment is DESIGNATED IN THE

SCHEDULE OF ITEMS for each PAY ITEM:

(a) Actual Quantities (AQ). These quantities are determined from measurements of completed work.

(b) Contract Quantities (CQ). As defined in 109.02 (b) and supplemented above.

(c) Lump Sum Quantities (LSQ). These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job.

152 - Construction Survey and Staking 152.00_Project_12_21_2018

Delete Section 152 in its entirety and replace with the following.

Section 152. — Construction Survey and Staking Description

152.01 This work consists of performing surveying, staking, calculating, and recording data for the control of work. See FAR Clause 52.236-17 Layout of Work.

Construction Requirements

152.02 Qualifications. Provide a Professional Engineer or Professional Land Surveyor licensed in the state where the survey and staking will be performed.

152.03 Submittals. Submit the following at the preconstruction conference:

Include the following when Automated Machine Guidance (AMG) methods are used:

(a) Contractor quality control plan. Comply with Section 153 and describe procedures for checking, mechanical calibration, and maintenance of both survey and construction equipment. Include the frequency and types of checks performed.

Include a price breakdown by individual tasks when construction survey and staking is paid by the lump sum for use in making progress payments and price adjustments.

152.04 General. Conform to the following:

(a) Personnel. Provide a crew supervisor on the project whenever surveying and staking is in progress.

(b) Equipment. Furnish survey instruments and supporting equipment capable of achieving the specified tolerances.

Construction equipment controlled with a Global Positioning System (GPS) and Robotic

Total Station (RTS) machine guidance system may be used in the construction of subgrade, subbase, and base aggregate courses, or other construction operations when approved.

(c) Material. Furnish acceptable tools and supplies of the type and quality suitable for survey work. Furnish stakes and hubs of sufficient length to provide a solid set in the ground with sufficient surface area above ground for necessary legible and durable markings.

Include staking activities in the construction schedule required under Section 155. Include the dates and sequence of each staking activity.

The Government will provide horizontal and vertical control points, and will provide data for use in establishing control for completion of each element of the work.

Data relating to horizontal and vertical alignment, theoretical slope stake catch points, and other design data will be furnished. Reformatting and additional calculations may be required for the convenient use of the

Government-furnished data. Provide immediate notification of apparent errors in the initial staking or in the Government-furnished data.

Record survey and measurement field data in an approved format. Submit as-staked data and corrections made to the Government-furnished survey data. Submit survey and measurement data at least weekly. Field data and supporting documentation become the property of the Government upon completion of the work.

Discuss and coordinate the following with the CO before surveying or staking:

(1) Surveying and staking methods;

(2) Stake marking;

(3) Grade control for courses of material;

(4) Referencing;

(5) Structure control;

(6) Field staking data;

(7) Localization of the GPS systems to the Government-established control points; and

(8) Other procedures and controls necessary for the work.

Do not start work until staking or three-dimensional (3D) verification data for the affected work has been approved.

Preserve initial reference and control points. Notify the CO of missing control points or stakes at least 10 days before beginning construction. The Government will reestablish control points missing before the beginning of construction.

Acceptance of the construction staking does not relieve the Contractor of responsibility for correcting errors discovered during the work and for bearing additional costs associated with the error.

Maintain legibility of stake markings for the duration of the project or until notified in writing the stakes are no longer needed. Replace stakes if necessary to ensure markings are maintained.

Remove and dispose of flagging, paint, lath, stakes, and other staking material after the project is complete.

152.05 Survey and Staking Requirements. Perform survey, staking, recording of data, and calculations as necessary to construct the project from the initial layout to final completion. Survey and set stakes to the tolerances in Table 152-1. Reset stakes, refine 3D data, or both as many times as necessary to construct the work.

(a) Control points. Relocate initial horizontal and vertical control points in conflict with construction to areas that will not be disturbed by construction operations. Furnish the coordinates, elevations, and supporting documentation for the relocated points before the initial points are disturbed. Set durable monuments for survey control that uniquely identify the points.

(b) Centerline establishment. Establish or reestablish centerline at roadway design cross-section locations and as necessary to construct the work. Reestablish the centerline when construction survey and staking work does not meet the tolerances.

(c) Slope and references stakes. Perform the following:

(1) Conventional survey methods. Verify and set slope stakes on both sides of centerline at the theoretical catch point. If the theoretical catch point is not within a tolerance of 0.5 feet (150 millimeters), perform original ground topographic verification according to Subsection 152.05(c). Set the slope stake at the actual intersection of the design roadway slope with the natural ground-line.

Set reference stakes outside the clearing limits. Include reference points and slope-stake information on the reference stakes.

Establish slope stakes in the field as the actual point of intersection of the design roadway slope with the natural ground-line when theoretical catch point information is not available.

(d) Clearing and grubbing limits. Set clearing and grubbing limits on both sides of centerline based on the actual slope-stake locations.

(e) Grade-finishing stakes.

(1) Conventional survey methods. Set grade-finishing stakes for grade elevations and horizontal alignment, on centerline and on each shoulder at design roadway cross-section locations. Set stakes at the top of subgrade and the top of each aggregate course. Reset grade finishing stakes as many times as necessary to construct the subgrade and each aggregate course.

During turnout or pullout construction, set stakes on the centerline, on each normal shoulder, and on the shoulder of the turnout.

When the centerline curve radius is less than or equal to 250 feet (75 meters), use a maximum longitudinal spacing between stakes of 25 feet (8 meters). When the centerline curve radius is greater than 250 feet (75 meters), use a maximum longitudinal spacing between stakes of 50 feet (15 meters). Use a maximum transverse spacing between stakes of 20 feet (6 meters). Use brushes or guard stakes at each stake.

(f) Bridges & Culverts. Set adequate horizontal and vertical control and reference points for bridge and culvert substructure and superstructure components. Establish and reference the bridge/culvert chord, tangent, or control lines as specified on the Plans.

Also establish and reference the centerline of each pier, bent, abutment, footing, etc.

(g) Miscellaneous survey and staking. Survey and stake other work (such as guardrail, curb and gutter, turf establishment, utilities, and excavation limits for structures) to the proper location and required tolerances. Propose staking increments for approval by the CO when not specified.

Table 152-1 Construction Survey and Staking Tolerances (1)

Staking Phase Horizontal Vertical

Control points set from existing Government control points

±0.03 feet (±10 millimeters)

±0.01 feet × N

(±3 millimeters × N )(2)

Mapping, topography, and cross-section points

±0.16 feet (±50 millimeters)

±0.16 feet (±50 millimeters)

Centerline points (3) including (PC), (PT), (POT),(POC), and references

±0.06 feet (±20 millimeters)

±0.06 feet (±20 millimeters)

Slope-stake and slope-stake references (4) ±0.16 feet (±50 millimeters)

±0.16 feet ±50 millimeters)

Culverts, ditches, and minor drainage structures stakes

±0.16 feet (±50 millimeters)

±0.06 feet (±20 millimeters)

Retaining walls stakes ±0.06 feet (±20 millimeters)

±0.03 feet (±10 millimeters)

Curb and gutter stakes ±0.06 feet (±20 millimeters)

±0.03 feet (±10 millimeters)

Bridge/Culvert substructures stakes ±0.03 feet (±10 millimeters)(5)

±0.03 feet (±10 millimeters)

Bridge/Culvert superstructures stakes ±0.03 feet (±10 millimeters)(5)

±0.03 feet (±10 millimeters)

Clearing and grubbing limit stakes ±1.00 feet (±300 millimeters)

Roadway subgrade finish stakes (6) ±0.16 feet (±50 millimeters)

±0.03 feet (±10 millimeters)

Roadway finish grade stakes (6) ±0.16 feet (±50 millimeters)

±0.03 feet (±10 millimeters)

(1) At statistical 95 percent confidence level. Tolerances are relative to existing Government control points.

(2) N is the number of instrument setups.

(3) Centerline points: PC - point of curve, PT - point of tangent, POT - point on tangent, POC - point on curve.

(4) Take the cross-sections normal to the centerline ±1 degree.

(5) Bridge control is established as a local network and the tolerances are relative to that network.

(6) Includes paved ditches.

152.06 Acceptance. Construction survey and staking will be evaluated under Subsections 106.02 and

106.04.

Survey notes will be evaluated under Subsection 106.02.

Measurement

152.07 Measure the Section 152 pay items listed in the bid schedule according to Subsection 109.02 and the following as applicable:

When measuring grade finishing, measure one time for the subgrade and one time for each aggregate course.

When measuring miscellaneous survey and staking paid by the hour; do not measure time spent in making preparations, traveling to and from the project site, performing calculations, plotting cross-sections and other data, processing computer data, and other efforts necessary to successfully accomplish construction survey and staking.

Do not measure re-establishing missing control points or stakes after construction operations have begun.

Payment

152.08 The accepted quantities will be paid at the contract price per unit of measurement for the Section

152 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this

Section. See Subsection 109.05.

153 – Contractor Quality Control 153.07_Project_11_14_2018

Add the following.

153.07. Project Submittals

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 Drawings.

Submittal Log

Log

No.

Incidental to Pay

Item(s) Description of Submittal

Type of

Submittal

Requirement found in

Specification No.

/Drawings

Additional

Specification

References

1 151 Submittal Schedule Schedule

2 151 Weed Free Material Source

Certification

Material

Certification FSSS 105.02(b)

3 151 Hazardous Spill Plan Plan FSSS 107.10

4 151 Contractor Quality Control Plan Plan 153.02 552.09

5 151 Material Storage/Staging Plan Plan and

Description FSSS 151 Drawings

6 152 Surveyor Credentials Certification FSSS 152

7 157 Soil Erosion and Pollution Control

Plan Plan FSSS 157.03

8 157 Stream Diversion & Dewatering Plan Plan Drawings

FSSS 157.03

157.09

9 208 Excavation and Backfill Plan &

Methods Plan Drawings

10 208 Structural Backfill Proctor Test Results 208.11 Drawings, FSSS

11 208 Structural Backfill Density Testing Test Results 208.11

12 251, 272 Class 1 Geotextile Material

Certification 714.01

13 251 Riprap Material

Certification 705.02

14 272 Geocell Abutment Stabilization Material

Certification

FSSS 272 106, FSSS 736,

Drawings

15 272 Geocell: Coarse Granular Backfill Material

Certification

FSSS 272 106, FSSS

703.03, Drawings

Submittal Log

Log

No.

Incidental to Pay

Item(s) Description of Submittal

Type of

Submittal

Requirement found in

Specification No.

/Drawings

Additional

Specification

References

16 272 Geocell: Geotextile – Type II Material

Certification

FSSS 272 106, 714,

Drawings

17 302 Aggregate Surface Course Material

Certification

FSSS 302

18 553A Precast Concrete Structures: Grade

Beam Shop Drawing FSSS 553A.03 104, 552, 553, 19 553A Precast Concrete: PCI/NPCA

Certification

Fabrication

Certification

FSSS 553.02

20 553A Precast Concrete Structures: Testing Test Results FSSS 553A.06 106, 554, 562

21 553A Reinforcing Steel Order List 554.03 553, 553A, 709, Drawings

22 557 Timber Structures Shop Drawings &

Timber Layout

Plan

104.04 557, Drawings

23 557 Timber Structures: Materials

(Includes Bearing Components)

Material

Certification

557.19 106,716, Drawings

24 622 Equipment Rental Equipment

Approval 622 Drawings

25 633 Kiosk Materials Material

Certification &

Layout

Drawings, 633

155 - Schedules for Construction Contracts 155.00_National_11_9_2016

Delete Section 155 in its entirety.

Delete Section 155.

157 - Soil Erosion and Sediment Control 157.04_Project_11_14_2018

Delete the last paragraph in Subsection 157.04.

201 - Clearing and Grubbing 201.04_National_11_8_2016

Delete and replace Subsection 201.04(d) with the following:

201.04(d) Clearing.

(d) Trim tree branches that extend over the road surface and shoulders to attain a clear height of 15 feet. Trim tree limbs as near flush with the trunk as practicable.

201.04_National_11_2_2016

Add the following paragraph to Subsection 201.04:

201.04 Clearing.

(e) Do not cut vegetation less than 3 feet in height and less than 3 inches in diameter that is within the clearing limits but beyond the roadway and not in a decking area and that does not interfere with sight distance along the road unless otherwise designated.

204 - Excavation and Embankment 204.00_Project_11_14_2018

Add the following to Subsection 204.06:

Section 204.06 — Roadway Excavation

(c) Drainage Feature. Drainage feature includes construction of all ditches, minor channel changes, drainage dips, catch basins, surface water deflectors, and other minor drainage structures. Compact the material according to Subsection 204.11. Excavate on a uniform grade between control points.

Do not disturb material and vegetation outside the construction limits. Retrieve material deposited outside the construction limits. Dispose of unsuitable or excess excavation material according to

Subsection 204.14. Replace shortage of suitable material caused by premature disposal of roadway excavation.

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

Delete Subsection 204.11 and replace with the following:

Section 204.11 — Compaction

204.11 Compaction

(a) Placement Method 2. Adjust the moisture content of the material to a moisture content suitable for compaction. Fill the interstices around rock with earth or other fine material as practical.

Operate roller compaction equipment over the full width of each layer until there is no visible evidence of further consolidation or, if when a sheepsfoot roller is used, the roller “walks out” of the layer. Make at least three complete passes. Use compression-type rollers at speeds less than 6 feet

(1.8 meters) per second and vibratory rollers at speeds less than 3 feet (1 meter) per second.

Ensure rollers meet the following requirements:

(1) Steel wheeled rollers, other than vibratory, capable of exerting a force of not less than 250 pounds per inch (4.5 kilogram/millimeter) of width of the compression roll or rolls.

(2) Vibratory steel wheeled rollers equipped with amplitude and frequency controls with a minimum dynamic force of 30,000 pounds (130 kilonewtons) impact per vibration, specifically designed to compact the material on which it is used.

(3) Pneumatic-tired rollers with smooth tread tires of equal size that will provide a uniform compacting pressure for the full width of the roller and capable of exerting a ground pressure of at least 80 psi (550 Kilopascals).

(4) Sheepsfoot, tamping, or grid rollers capable of exerting a force of 250 pounds per inch (4.5 kilogram/millimeter) of width of roller drum.

Delete Subsection 204.12 and replace with the following:

Section 204.12 — Drainage Features

204.12 Drainage Features. Slope, grade, and shape all drainage features. Remove projecting roots, stumps, rock, or similar matter. 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. Shape to provide drainage without overflow.

208 - Structure Excavation and Backfill for Selected Major

Structures

208.03_Project_11_14_2018

Add the following to Subsection 208.03:

208.03 General.

Submit two sets of the excavation plan to the CO for approval a minimum of 21 days before the start of construction:

Use all suitable material from structure excavation or gov’t furnished material source for trail embankment material. Field drain and dry excessively wet material that is otherwise suitable for embankment before placement. Place and shape unsuitable or excess material in the designated sites or as directed by the CO.

208.07_National_11_8_2016

Add the following to Subsection 208.07:

208.07 Dewatering.

Construct diversions according to Subsection 157.10 Diversions. Submit dewatering plans according to

Subsection 104.03.

208.12_Project_11_14_2018

Delete Subsection 208.12 and add the following:

208.12 Measurement.

Measure the Section 208 items listed in the bid schedule according to Subsection 109.02 and the following:

Measure structural backfill by the cubic yard in place for the volume placed to the neat lines and grades shown on the plans or the contractor’s approved excavation plan.

251 - Riprap 251.07_Project_11_14_2018

Delete the last sentence of Subsection 251.07 and add the following:

251.07 Acceptance

Structure excavation and backfill will be evaluated under Section 208.

272 – Geocell Abutment Stabilization 251.07_Project_11_14_2018

Add Section 272:

Section 272 — GEOCELL ABUTMENT STABILIZATION Description

272.01 Work. This work consists of constructing geocell abutment stabilization at each abutment using a cellular confinement system such as Presto Geoweb Cellular Confinement System or Webtec TerraCell in accordance with the plans and manufacturers recommendations.

Materials

272.02 Requirements. Ensure that material conforms to specifications in the following subsections:

Granular Backfill Type (a) …………………………………………………..……… 703.03

Geotextile, Type I (A, B) ……………………………………………………..……… 714.01

Geocell ………………………………………………………………………………………. 736

Construction

272.03 General. Perform the work specified in Section 208 or 209. Use ditches, grading or similar methods to prevent surface runoff that may occur during inclement weather from ponding in the foundation excavation.

272.04 Storage and Handling of Material. During shipment and storage, wrap geotextile materials in heavy-duty protective covering. Protect the material from mud, soil, dust, debris and sunlight prior to installation.

272.05 Geotextile Installation. Place the geotextile according to Section 207. Have the surface approved by the CO prior to placing geotextile.

Sew or overlap adjacent strips a minimum of 12” at joints. Insert securing pins through both strips of overlapped geotextile at minimum intervals of 3 feet, but no closer than 2 inches to each edge, to prevent the geotextile from being displaced.

Have the installed geotextile approved by the CO prior to setting the geocells.

272.06 Geocell Installation. Furnish the CO with product literature and certification as required in

Section 106.03 for review and approval 7 days prior to installation. When requested by the CO, furnish a sample of the geocell from each lot for verification testing.

Place the geocell sections directly on the prepared subgrade. Expand the geocell sections into position at the grades and lines as shown on the plans. Hold the expanded geocell sections with suitable

“stretcher frames”, steel stakes driven inside selected outer cell walls, or other similar methods as allowed by the manufacturer prior to filling. Ensure that the individual cells have expanded to the minimum dimensions required by the manufacturer. If necessary, field cut sections as per the manufacturer’s recommendations to the lines shown on the plans.

Connect geocell panels in accordance with the manufacturer’s recommendations.

272.07 Infill Placement. Furnish the CO with the manufacturer’s specific recommendations for backfilling 7 days prior to placement of the geocells.

Place coarse granular backfill meeting Subsection 703.03 into the expanded cells with equipment appropriate for the site conditions such as a backhoe or a front-end loader. Do not drop infill material more than 3 feet to avoid damage or displacement of the cell walls.

Overfill the geocell cells and level to a minimum of 2 inches above the top of the cell walls. A front-end loader may be used to place the infill provided that it only traffics above geocell sections that have been filled and covered with the minimum 2 inches of additional material. Compact the infill material with a vibratory plate compacter. Operate compaction equipment over the full width of the geocell. Make at least three complete passes or until visible deformation of the infill ceases. Grade the surface to be ½ inch above the top of the cells. Ensure that the cell walls are not exposed after fine grading is completed.

Use the geocell manufacturer’s specific recommendations for backfilling if they are more stringent than stated above.

272.08 Acceptance. Geotextile will be evaluated under Subsections 106.02 and 714.01.

Material for geocell will be evaluated under Subsections 106.2 and 106.03.

Granular backfill material will be evaluated under Section 106.02 and 106.04.

Measurement

272.09 Method. Measure the items listed in the bid schedule according to Subsection 109.02 and the following.

Measure geocell by the square yard in place, exclusive of wastage.

Payment

272.10 Basis. The accepted quantities will be paid for at the contract price per unit of measurement for the Section 272 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

The cost for furnishing and placing the course granular backfill required in Sections 207, 208, and 209 for geocell infill is incidental to this pay item and no separate payment will be made. The cost for furnishing and placing geotextile for the geocell installation is incidental to this pay item and no separate payment will be made.

553A – Precast Concrete Structures 553.00_Project_11_14_2018

Add Section 553A with the following:

Section 553A. — Precast Concrete Structures Description

553A.01 Work. Construct precast concrete members. In addition, manufacture, test materials for, transport, store, and install all precast concrete portions except piling, and perform all necessary grouting, welding, or other connections. Furnish precast concrete members complete and in place, including all concrete reinforcing steel and incidentals connected therewith.

Materials

553A.02 Requirements. Provide materials that meet the requirements specified in the following subsections:

High-Strength Nonshrink Grout ……………………725.40

Mortar …………………………………………………………725.41

Reinforcing Steel ………………………………………… 709.01

Sealants, Fillers, and Seals ……………………………712.01

Structural Concrete ………………………………………552

Structural Steel ……………………………………………..717.01

Provide precast concrete members of the size, shape, strength, air content, and finish that are SHOWN

ON THE DRAWINGS. Precast concrete members must be manufactured by a plant with one of the following certifications:

• Precast / Prestressed Concrete Institute (PCI) o Bridge 1, Precast Bridge Products (no prestressed reinforcing).

o Commercial 1, Precast Concrete Products (no prestressed reinforcing).

• National Precast Concrete Association (NPCA) o Precast

• American Concrete Pipe Association (ACPA) o QCast

Submit a copy of the transmittal letter of the latest PCI, NPCA or ACPA inspection/certification with the shop drawings.

In lieu of the industry certifications shown above, Contractor shall retain a professional engineer to provide quality assurance for the work by inspecting and certifying in writing the concrete members are constructed in accordance to the specification and shall include but not limited to:

a) Shop drawing review.

b) Concrete member dimensions.

c) Concrete mix design.

d) Aggregate sources and test results.

e) Steel reinforcing placement.

f) Concrete curing and strength test results.

g) Concrete material certifications.

h) Placement mixing, delivery and sampling.

Certification of the above shall be received by the CO prior to shipment and installation at the job site.

Perform all sampling, testing, and inspection necessary to ensure quality control of the component materials and the concrete. Sample and test for quality control and acceptance testing in accordance with the AASHTO or ASTM test methods prescribed in Section 552.

Maintain adequate records of all inspections and tests. Keep records that indicate the nature and number of observations made, the number and type of deficiencies found, the quantities approved and rejected, and the nature of any corrective action taken.

Construction

553A.03 Performance. Construct precast concrete structural members in accordance with the following sections and subsections, as applicable:

Reinforcing Steel ………………………………………………

Storing, Transporting, & Erecting ………………………... 553.09

Structural Concrete ……………………………………………… 552

Submit four sets of shop drawings to the CO for approval, including the concrete mix design for each class of concrete proposed for use, a minimum of 21 days before fabrication of the precast member(s).

553A.05 Handling, Transporting, & Erecting. Provide additional reinforcement, as needed, to meet the requirements of handling, transporting, and erecting precast members.

553A.06 Acceptance. Reinforcing steel, anchor devices, elastomeric bearings, and material for concrete and grout will be evaluated under Subsection 106.03. Furnish production certifications for hydraulic cement and reinforcing steel.

Concrete for precast concrete members will be evaluated under Subsections 106.02, 106.03, and 106.04.

Construction of precast concrete members will be evaluated under Subsections 106.02 and 106.04.

Reinforcing steel will be evaluated under Section 554.

Falsework and forms will be evaluated under Section 562.

Measurement

553A.07 Measure the Section 553A items listed in the bid schedule according to Subsection 109.02 and the following as applicable.

Do not measure reinforcing steel, concrete, anchorages, plates, nuts, and other material contained within or attached to the unit for precast concrete structural members.

Payment

553A.08 The accepted quantities will be paid at the contract price per unit of measurement for the

Section 553A pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

622 – Rental Equipment 622.02_Project_12_28_2018

Construction Requirements

622.02 Rental Equipment.

Delete the first two sentences of the first paragraph and add the following:

Provide equipment of the type listed in the Schedule of Items. Provide equipment of at least the minimum size needed to efficiently perform the work. Submit the model number of the equipment to the CO for approval before delivery to the project site. Equipment shall be no more than 15 years old and shall be reasonably free of leaks and other mechanical deficiencies.

Delete “along with certified copies of the payrolls” in the last sentence of the third paragraph.

703 - Aggregate 703.03_Project_11_14_2018

Add the following to Subsection 703.03:

703.03 Granular Backfill.

(c) Coarse Granular Backfill. Furnish backfill material that consists of clean, hard durable particles or fragments of crushed stone, crushed slag or crushed gravel meeting the gradation shown below.

Sieve Size Percent Passing

1 inch 100

¾ inch 75 to 100

No. 4 0 to 60

No. 40 0 to 50

No. 200 0 to 5

736 – Geocell 736.00_Project_11_14_2018

Add Section 736 with the following:

Section 736. — GEOCELL

736.01 Geocell. Furnish geocell material consisting of sheet strips fabricated from high-density polyethylene (H.D.P.E.), connected in series at off-set, full-depth ultrasonic seams aligned perpendicular to the longitudinal axis of the strips. When expanded, the interconnected strips form the walls of a flexible, three-dimensional cellular confinement structure into which the specified infill material is placed.

736.02 Requirements. Furnish geocells consisting of polyethylene material treated to resist ultraviolet degradation and conforming to the requirements shown in table 736-1.

Table 736-1 – Requirements for geocells.

Density ASTM D 1505 0.935 to 0.965 g/cm3 (58.4 to 60.2 pounds per cubic foot).

Environmental

Stress Crack

Resistance

ASTM D 1693 3000 hours

Strip Sheet

Thickness

ASTM D 5199 1.27 mm (50 mil), minus 5 percent, plus 10 percent. Determine thickness in the flat before any surface texturing or other surface disruption.

Short-term peel strength

U.S. Army Corps of Engineers

Technical Report GL-86-19, Appendix

A

2135 N (480 pound) minimum for

152 mm (6.0 inch) depth cell

Seam Hang Strength 101.6 mm (4”) weld joint supporting load of 72.5 kg (160 pounds) or

101.6 mm (4”) weld joint supporting load of 72.5 kg (160 pounds) while undergoing temperature change from 23O C to 54O C (74O F to 130O F) on 1 hour cycles.

30 days minimum

7 days minimum