UPPER IRON FSSS 040210.docx

UPPER IRON CREEK CULVERT REPLACEMENT

KOOTENAI National Forest THREE RIVERS Ranger District LINCOLN County, Montana Table of Contents

Preface Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-03 for construction of National Forest System Roads.

101 - Terms, Format, and Definitions

101.01 Meaning of Terms

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

101.03 Abbreviations.

Add the following to (a) Acronyms:

AFPA

MSHA

NIST

NESC

WCLIB

American Forest and Paper Association Mine Safety and Health Administration National Institute of Standards and Technology National Electrical Safety Code West Coast Lumber Inspection Bureau

Add the following to (b) SI symbols:

101.04 Definitions.

Delete the following definitions and substitute the following:

Bid Schedule--The Schedule of Items.

Bridge--No definition.

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--No definition.

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.

Add the following:

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.

Design Quantity--“Design quantity” is a Forest Service method of measurement from the FS-96 Forest Service Specifications for the Construction of Roads and Bridges. Under these FP specifications this term is replaced by the term “Contract Quantities”.

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.

Schedule of Items--A schedule in the contract that contains a listing and description of construction items, quantities, units of measure, unit price, and amount.

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 Delete

Delete Section 102 in its entirety.

103 - Scope of Work

Delete all but subsection 103.01 Intent of Contract.

104 - Control of Work

Delete Sections 104.01, 104.02, and 104.04.

Add the following subsection:

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 Material Sources

Add the following before the first paragraph.

Sources have been designated for this project as follows:

Riprap and Channel Rock Source – Contractor Furnished – There is no available Government source for Riprap for this project.

Crushed Aggregate Source- Contractor Furnished. There is no available Government source for Crushed Aggregate for this project.

Coarse Granular Backfill – Contractor Furnished – There is no available Government source for Coarse Granular Backfill for construction of the geocell abutment stabilization.

Waste Site – Government Furnished – A waste site for excess and unsuitable material will be located within 10 miles from this project by the CO. This site is to be used for the disposal of unsuitable or excess excavated material only. All other materials designated for removal and disposal must be disposed of away from Forest Land as per SPS Section 202.

Materials Stockpile Site – There is no available Government site for stockpiling materials prior to road closure.

Add the following to section (b) Contractor-located sources.

Prior to any pit development or use of materials, the pit site provide to the CO a State certification that the pit site is free of noxious weed as listed on the "All States Noxious Weeds List”.

106 – Acceptance of Work

106.07 Delete

Delete subsection 106.07.

107 - Legal Relations and Responsibility to the Public

107.05 Responsibility for Damage Claims.

Delete the entire subsection.

107.06 Contractor’s Responsibility for Work.

Delete the following from the first paragraph.

“except as provided in Subsection 106.07”.

107.09 Legal Relationship of the Parties.

Delete the entire subsection.

107.10 Environmental Protection.

Add the following:

Design and locate equipment repair shops, stationary refueling sites, or other facilities to minimize the potential and impacts of hazardous material spills on Government land.

Before beginning any work, submit a Hazardous Spill Plan. List actions to be taken in the event of a spill. Incorporate preventive measures to be taken, such as the location of mobile refueling facilities, storage and handling of hazardous materials, and similar information. Immediately notify the CO of all hazardous material spills. Provide a written narrative report form no later than 24 hours after the initial report and include the following:

· Description of the item spilled (including identity, quantity, manifest number, and other identifying information).

· Whether amount spilled is EPA or state reportable, and if so whether it was reported, and to whom.

· Exact time and location of spill including a description of the area involved.

· Containment procedures.

· Summary of any communications the Contractor had with news media, Federal, state and local regulatory agencies and officials, or Forest Service officials.

· Description of clean-up procedures employed or to be employed at the site including final disposition and disposal location of spill residue.

When available provide copies of all spill related clean up and closure documentation and correspondence from regulatory agencies.

The Contractor is solely responsible for all spills or leaks that occur during the performance of this contract. Clean up spills or leaks to the satisfaction of the CO and in a manner that complies with Federal, state, and local laws and regulations.

108 - Prosecution and Progress Delete.

Delete Section 108 in its entirety.

109 - Measurement and Payment

Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Add the following:

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

Change the following:

“(b) Cubic yard” to “(c) Cubic yard”.

Add the following definition:

(p) Thousand Board Feet (Mbf). 1,000 board feet based on nominal widths, thickness, and extreme usable length of each piece of lumber or timber actually incorporated in the job. For glued laminated timber, 1,000 board feet based on actual width, thickness, and length of each piece actually incorporated in the job.

151 - Mobilization

151.01 Description

Add the following:

This work consists of washing and treating construction equipment and vehicles necessary for equipment transport to remove seeds, plants, and plant fragments before the equipment is used on Forest Service lands.

Wash the sides, tops, and undercarriages of all construction equipment. Remove all seeds, plants, plant fragments, dirt, and debris from the construction equipment. Only equipment inspected by the Forest Service will be allowed to operate within the project area. All subsequent move-ins of equipment to the project area will be treated in the same manner as the initial move-in. This requirement does not apply to cars, pickup trucks, and other vehicles that regularly travel between the construction site and areas off the National Forest.

Equipment will be considered free of soil, seed, and other such debris when a visual inspection does not disclose such material. Disassembly of equipment, components or the need for specialized inspection tools is not required.

Notify the CO in writing at least 24 hours before moving any construction equipment onto the national forest. Notification will include an agreed upon location where the equipment will be available for inspection by the Forest Service. Inspection will be required after every cleaning.

Use methods of cleaning and locations for cleaning approved by the CO.

For work at a commercial washing facility, use an approved facility.

New infestations of noxious weeds of concern to Forest Service and identified by either Contractor or Forest Service, on the Project Area or on the haul route, will be promptly reported to the other party. Contractor and Forest Service will agree on treatment methods to reduce or stop the spread of noxious weeds when new infestations are found. A current list of noxious weeds of concern to Forest Service is available at each Forest Service office.

152 – Construction Survey and Staking

152.01 (a) Personnel.

Add the following.

Conduct all construction staking under the direction of a licensed professional engineer or land surveyor who is closely associated and familiar with construction staking.

153 – Contractor Quality Control Add the following.

153.07 Project Submittals

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

Submittal Log

Pay Item(s)

/Drawings Additional Specification References

Certification

FSSS 105.01

Certification

Certification

Certification

FSSS 736, Drawings

Certification

FSSS 703.03, Drawings

Certification

Certification

Certification

Approval

FSSS 622.02

Certification

FSSS 625, 713

Certification

Certification

Approval

155 - Schedules for Construction Contracts Delete.

Delete Section 155 in its entirety.

156 - Public Traffic

156.03 Accommodating Traffic During Work.

Delete the first paragraph and replace with the following:

Accommodate traffic according to the requirements set forth below, MUTCD, and Section 635. Submit a traffic control plan for acceptance at least 30 days before intended use.

Add the following project specific requirements:

The Contractor will be allowed to close Road No. 4555 at the intersection with Road No. 4562 to thru traffic for a maximum of 2 weeks. Advanced warning signs shall be placed at the intersection with Iron Creek Road, NFSR 1228 as approved by the CO. All in stream work must be accomplished from July 15 to October 1.

It is the responsibility of the Contractor to schedule delivery of materials, equipment and all necessary supplies to the site, to ensure that the culvert replacement can be substantially completed within the specified contract time.

The Contractor shall give the CO at least two weeks advanced written notice prior to any road closure.

The Contractor shall be responsible for providing, installing, maintaining, and removal of warning signs and barricades required for the road closure period in accordance with MUTCD as submitted and approved in the traffic control plan.

Delete the following from the last sentence of the last paragraph:

…according to Subsection 106.07(b).

156.08 Traffic and Safety Supervisor.

Delete this subsection in its entirety.

156.10 Measurement and Payment

Add the following.

Payment for Section 156 – Public Traffic is incidental to Section 151 – Mobilization.

157 - Soil Erosion Control

157.02 Materials

Add the following:

Instream Sediment Trapping Devices 713.19

Provide bales, wattles, logs and rolls from a certified noxious weed free source

157.03 General.

Delete the first two paragraphs and replace with the following:

Submit an Erosion Control Plan detailing permanent and temporary control measures to minimize erosion and sedimentation during and after construction in accordance with the plans and storm water permits. Do not modify the type, size, or location of any control or practice without approval. Submit the erosion control plan proposal at least 7 days before operations begin to the CO for approval.

Reflect in the Erosion Control Plan special concerns and measures necessary to protect resources and government improvements. Include:

(a) The construction activities and sequence of implementation relating to specific erosion control measures.

(b) The location and type of permanent controls to be implemented during construction.

(c) The location and type of temporary controls to be implemented during construction.

(d) For work in stream channels with running water a detailed dewatering plan.

(e) For work in stream channels without flowing water describe level of ground and vegetative disturbance and measures to reduce potential sediment delivery.

(f) Description of the monitoring plan.

Add the following to the third paragraph:

Upon completion of construction at the site, remove all temporary erosion control devices, dewatering materials and equipment from Government property.

157.08 Water Crossings.

Add the following:

At any channel crossing where there is running water, dewater by rerouting water flow around the site before and during excavation and embankment operations.

203 - Removal of Structures and Obstructions

203.05 Disposing of Material.

Modify this subsection as follows:

(a) Remove from project. Add the following:

All materials designated for removal become the property of the Contractor and are to be disposed of by removing off of Forest Service Lands in accordance with all local, state and federal requirements.

(b) Burn. Delete this section.

(c) Bury. Delete this section.

Add the following:

(e) Placing Slash on Embankment Slopes. Place construction slash on completed embankment slopes or scatter as directed by the CO to reduce soil erosion. Place construction slash as flat as practicable on the completed slope. Priority for use of available slash is for: (1) through fills; (2) insides of curves; and (3) ditch relief outlets. All slash material not suitable for embankment slopes shall be disposed off Forest Service Lands in accordance with all local, state and federal requirements or as approved by the CO.

204 - Excavation and Embankment

204.11 Compaction.

Delete section and add the following:

Layer Placement (Roller Compaction) Method. Place material by end dumping to the minimum depth needed for operation of spreading equipment. Maximum compacted lift depth is 6 inches. Adjust the moisture content to a level suitable for compaction. Operate Rollers over the full width of each layer until visual displacement ceases, but not fewer than three complete passes. Use rollers that meet the following requirements:

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

(2) Vibratory steel wheeled rollers equipped with amplitude and frequency controls with a minimum weight of 6 tons, 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.

(4) Sheepsfoot, tamping, or grid rollers capable of exerting a force of 250 lbs/inch of width of roller drum.

204.14 Disposal of Unsuitable or Excess Material.

Delete the text of the first paragraph and substitute the following:

208 - Structure Excavation and Backfill for Selected Major Structures

208.01

Add the following:

The geotechnical report is included in Appendix A. The geotechnical report is for the Contractor’s information only. There is no expressed or implied guarantee that the data included, or the interpretations thereof, represent either extreme, average, or the only soil and groundwater conditions to be found at the project site.

208.04 General.

Use all suitable material in the construction of the roadway embankment and for structural backfill. Field drain and dry excessively wet material that is otherwise suitable for embankment before placement. Place and shape unsuitable or excess material at designated sites shown on the drawings or as directed by the CO.

251 - Riprap

251.01 Description

Delete the first sentence and add the following:

This work consists of furnishing, hauling, and placing of riprap and channel rock for bank protection, slope protection, drainage structures, erosion control, and other features shown on the plans.

Add the following:

Channel Rock classes are designated as shown in Table 705-5.

251.02 Material

Add the following:

Channel Rock 705.08

Add the following:

251.04a Grade Control Structure.

Furnish channel rock in accordance with FSSS 105 and as shown on the drawings. Place or rearrange individual rocks by mechanical methods to obtain a shape as shown on the drawings.

Fill all voids left during placement of grade control structures adjacent to concrete footings or corrugate pipes with excess structural excavation material.

All grade control structure locations must be approved by the CO prior to excavation or placement of rock.

251.07 Acceptance

Add the following:

Channel Rock has the same sampling and testing requirements as Riprap (705.02).

Delete the fourth sentence and add the following:

Structure excavation and backfill will be evaluated under section 208.

272 - Geocell Abutment Stabilization Description

272.01 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:

Construction Requirements

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 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.

324 - Minor Aggregate Courses - Commercial Source

324.01 This work consists of constructing one or more courses of aggregate on a prepared surface. Work includes producing aggregate by crushing methods.

Material

324.02 Conform to the following Subsections:

Construction Requirements

324.03 General. Prepare the surface on which the aggregate course is placed according to Section 204 or 303 as applicable.

Request approval of the roadbed in writing before placing aggregate.

Develop, haul, and apply water in accordance to Section 170.

Submit aggregate gradations for approval by the CO.

After processing on the road, remove all oversize material from the road and dispose of it as directed by the CO.

If the aggregate is produced and stockpiled before placement, handle and stockpiled according to Section 320. Establish stockpile sites at approved locations.

0. Mixing and Spreading. Mix the aggregate and adjust the moisture content to obtain a uniform mixture with moisture content suitable for the specified compaction method. Spread and shape the mixture on the prepared surface in a uniform layer with no segregation of size, and to a loose depth that will provide the required compacted thickness. Place the mixture in a maximum compacted layer thickness of 6 inches.

When more than one layer is necessary, compact each layer according to Subsection 324.05 before placing the next layer. Route hauling and leveling equipment uniformly over the full width.

When placing aggregate over geotextile, place aggregate in a single lift to the full depth specified.

324.05 Compacting. Compact each layer full width. Roll from the sides to the center, parallel to the centerline of the road. Along curbs, headers, walls, and all places not accessible to the roller, compact the material with approved tampers or compactors.

Compact the aggregate using one of the following methods as specified:

Compaction A. Operating spreading and hauling equipment over the full width of the travelway.

Compaction B. Operate rollers and compact as specified in FSSS 204.11.

Compaction C. Moisten or dry the aggregate to a uniform moisture content between 5 and 7 percent based on total dry weight of the mixture. Operate rollers and compact as specified in FSSS 204.11.

Compaction D. Compact to a density of at least 95 percent of the maximum density, as determined by AASHTO T 99, method C or D.

Compaction E. Compact to a density of at least 96 percent of the maximum density, as determined by the Modified Marshall Hammer Compaction Method (available upon request from USDA Forest Service, Regional Materials Engineering Center, P.O. Box 7669, Missoula, MT 59807).

Compaction F. Compact to a density of at least 95 percent of the maximum density, as determined by AASHTO T 180, method C or D.

Compaction G. Compact to a density of at least 100 percent of the maximum density as determined by the Modified Marshall Hammer Compaction Method (available upon request from USDA Forest Service, Regional Materials Engineering Center, P.O. Box 7669, Missoula, MT 59807).

For all compaction methods, blade the surface of each layer during the compaction operations to remove irregularities and produce a smooth, even surface. When a density requirement is specified, determine the in place density and moisture content according to AASHTO T 310 or other approved test procedures.

324.06 Construction Tolerance. If grade finishing stakes are required, finish the surface to within ±0.10 feet from staked line and grade elevation.

If grade finishing stakes are not required, shape the surface to the required template and check the surface with a 10-foot straightedge. Defective areas are surface deviations in excess of 1/2 inch in 10 feet between any two contacts of the straightedge with the surface.

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

Ensure that the compacted thickness is not consistently above or below the specified thickness. The maximum variation from the compacted specified thickness is ½ inch.

Ensure that the compacted width is not consistently above the specified width. The maximum variation from the specified width will not exceed +12 inches at any point.

324.07 Maintenance. Maintain the aggregate course to the correct line, grade, and crosssection by blading, watering, rolling, or any combination thereof until placement of the next course. Correct all defects according to Subsection 324.06.

324.08 Acceptance. See Table 324-1 for sampling and testing requirements.

Aggregate gradation and surface course plasticity index will be evaluated under Subsection 106.03 and 106.04. Other aggregate quality properties will be evaluated under Subsections 106.02 and 106.03. Placement of aggregate courses will be evaluated under Subsections 106.02 and 106.04.

Preparation of the surface on which the aggregate course is placed will be evaluated under Section 204 or 303 as applicable.

Measurement

324.09 Measure the Section 324 items listed in the bid schedule according to Subsection 109.02 and the following as applicable.

Measure square yard width horizontally to include the top of aggregate width including designed widening. Measure the square yard length horizontally along the centerline of the roadway.

Measure aggregate by the cubic yard in-place once compacted.

Measure thickness perpendicular to the grade of the travelway.

Measure width perpendicular to the centerline.

Payment

324.10 The accepted quantities will be paid at the contract price per unit of measurement for the Section 324 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

Table 324-1 Sampling and Testing Requirements

in work

Split Sample

material

Sampling Frequency 1 per type & source of material

for conformance (106.03 & 105) Measured and tested for conformance (106.04)

703.06 Subbase, Base, and Surface courses

Table 324-1 (continued) Sampling and Testing Requirements Reporting Time

Split Sample

Sampling Frequency

for conformance (106.04)

553A – Precast Concrete Structures

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:

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 certified by the Prestressed Concrete Institute (PCI). Submit a copy of the transmittal letter of the latest PCI inspection with the shop drawings.

In lieu of PCI certification, 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:

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.04 Casting Yard. The precasting of concrete structural members may only be done at a casting yard of a PCI Certified plant.

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.

603 - Structural Plate Structures

603.03 General.

Delete the first sentence and add the following:

Excavation and backfill will be evaluated under Section 208.

603.05 Acceptance.

Delete the third sentence and add the following:

Excavation and backfill will be evaluated under Section 208.

622 - Rental Equipment

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.

Based on the geotechnical investigation, it is recommended that the excavator be larger than a CAT 325, due to the large diameter boulders encountered in the test pit.

625 – Turf Establishment

625.04 Preparing Seedbed.

Delete entire subsection.

625.05 Watering

Delete entire subsection.

625.07 Seeding.

(a) Dry method. Delete the third sentence.

Add the following after subsection (b).

Seed Mix. Government will supply the seed mix.

625.08 Mulching.

Delete the entire subsection and replace with the following:

Mulching:

Mulch material shall be weed free straw and shall be applied at a uniform rate to adequately cover the seed to a depth of 4”. The weed free straw shall be from a grain crop such as barley straw, wheat straw or oat straw.

703 - Aggregate

703.03 Granular Backfill.

Add the following:

(c) Course 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.

705 - Rock

705.08 Channel Rock.

Furnish hard, durable, and angular rock that is resistant to weathering and water action and free of organic or other unsuitable material. Do not use shale, rock with shale seams, or other fissile or fissured rock that may break into smaller pieces in the process of handling and placing. Conform to the following:

Table 705-5 Gradation requirement for channel rock (CR)

713 – Roadside Improvement Material

713.19 Instream Sediment Trapping Devices.

Furnish instream sediment collection mats designed to run along the watercourse bottom.

(a) Instream sediment mat anchors should be 2 x 4 or 1.33 pounds/lineal ft metal stakes. All instream anchors should have a floating anchor buoy or other identifying mark.

(b) Instream sediment mats should be installed per manufactures’ recommendations.

As specified as instream sediment trapping devices on the contract plans, the following products meet the above requirements.

1. SEDIMAT, manufactured by Indian Valley Industries, Inc.

725 - Miscellaneous Material

Add the following section:

725.40 High-Strength Nonshrink Grout

Furnish grout that is packaged and ready for use with the addition of water at the construction site. Ensure that each bag is stamped to show the last date on which it may be used. Use grout that consists of a hydraulic cementitious system, graded and processed natural fine aggregate, and additional technical components such that the product meets the following conditions:

(a) Free of inorganic accelerators, including chlorides.

(b) Free of oxidizing catalysts.

(c) Free of gas-producing agents.

(d) When mixed to 130 percent flow on flow table (ASTM C 230 at 10 drops), it does not reduce in linear dimension when tested in accordance with ASTM C157. Take measurements at 72 hours and 7 days.

(e) Produces no bleeding for the first 2 hours after mixing when mixed to 130 percent flow on flow table (ASTM C 230 at 10 drops), as tested in accordance with ASTM C232.

(f) Has a minimum strength as follows when tested in accordance with ASTM C 109:

Provide performance characteristics at 115 to 120 percent flow on flow table (ASTM C 230 at 10 drops).

(g) It must be designed, as stated by the manufacturer, to be mixed, placed, and cured at atmospheric temperatures of 5O C to 30O C (40O F to 85O F). Submit products proposed for use for approval by the CO and accompany them with manufacturer’s submittals substantiating all requirements in this subsection, including graphs or charts showing the time, temperature, and humidity requirements for curing to achieve the specified grout strengths; and recommendations for storage, mixing, application, and curing procedures.

As specified as grout on the contract plans, the following products meet the above requirements.

2. MASTERFLOW 928 GROUT, manufactured by Chemrex.

3. CRYSTEX GROUT, manufactured by L&M Construction Chemicals, Inc.

4. CEMENT ALL, manufactured by CTS Cement Manufacturing Co.

5. SURE-GRIP HIGH PERFORMANCE GROUT manufactured by Dayton Superior.

725.41 Mortar

Furnish mortar that is packaged and ready for use with the addition of water at the construction site. Ensure that each bag is stamped to show the latest date on which it may be used. Use mortar that consists of a cementitious system made up of:

(a) Natural aggregate, 3/8” maximum size, that meets the requirements specified in ASTM C 33 except for grading. Accomplish grading by blending sieve sizes to obtain the optimum density.

(b) Metallic aggregate free from nonferrous material, soluble alkaline compounds, and visible rust.

(c) Water reducers, workability agents, air-entraining agents, and catalysts.

Blend the materials to minimize bleeding, increase workability, resist exposure to freeze-thaw cycles and deicing salts, and prevent shrinkage within and at the perimeter of the patch, keyway, or other area to be filled.

Ensure that the minimum compressive strength of the mortar, as tested by ASTM C 109 for a 3” slump, is:

· 24-hour...........................................................................................35MPa (5000 psi)

· 7-day...............................................................................................60 MPa (8500 psi)

· 28-day.............................................................................................70 MPa (10,000 psi)

Ensure that the durability of the products when tested at 300 cycles, ASTM C 666, procedure A is:

Submerged in: DF (%)

Water 98

5% CaCl2 solution 95

5% NaCL solution 85

Ensure that the scaling resistance has a rating of 3, Moderate Scaling, after 50 cycles when tested in accordance with ASTM C 672.

Provide certification from the manufacturer that the product is compatible for work that is 1” or more in depth and more than 1” in width; and where the mixing, placing, and curing temperatures may range from 5O C to 30O C (40O F to 85O F).

Submit products proposed for use to the CO for approval, and accompany them with the manufacturer’s submittals substantiating all requirements in this section, including (1) graphs or charts showing the time, temperature, humidity, and curing requirements to achieve mortar strengths equal to the adjacent concrete; and (2) complete recommendations for storage, mixing, application, and curing procedures.

As specified as mortar on the contract plans, the following products meet the above requirements.

1. EMACO T425 or T430, manufactured by Chemrex.

2. RAPID SET DOT REPAIR MIX manufactured by CTS Cement Manufacturing Co.

3. SURE-GRIP HIGH PERFORMANCE GROUT (when extended with pea gravel) manufactured by Dayton Superior .

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.

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

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