SuppSpcsDeerCrkFSSS.doc

FOREST SERVICE

SUPPLEMENTAL SPECIFICATIONS

DEER CREEK BRIDGE

(ROAD NO.2541 - M.P. 3.1)

U.S.D.A Forest Service, Region 1 Bonners Ferry Ranger District Idaho Panhandle National Forests Boundary County, Idaho Prepared by:

GREAT WEST ENGINEERING

2501 Belt View Drive

Helena, MT 59604

DEER CREEK BRIDGE

Road No. 2541 – M.P. 3.1

FOREST SERVICE SUPPLEMENTAL SPECIFICATIONS

Table of Contents

1Preface

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 151 - Mobilization 152 – Construction Survey And Staking

153 – CONTRACTOR QUALITY CONTROL

155 - Schedules for Construction Contracts 156 - Public Traffic 157 - Soil Erosion Control

201 – CLEARING AND GRUBBING

203 – Removal of Structures and Obstructions 204 - Excavation and Embankment 208 - Structure Excavation And Backfill For Selected Major Structures 251 - Riprap

551 – DRIVEN PILES

553 – PRESTRESSED CONCRETE

553A – Precast Concrete Structures 622 - Rental Equipment 625 - Turf Establishment 725 - Miscellaneous Material

APPENDIX A – GEOTECHNICAL EVALUATION

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.

Add the following:

Delete all references in FP-03 to Transportation Acquisition Regulations (TAR).

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 102 Bid, Award, and Execution of Contract

Delete Section 102 in its entirety.

103 - Scope of Work Deletions

Delete all but subsection 103.01 Intent of Contract.

This project consists of the removal of an existing timber bridge and construction of a new 75’ span by 23’-4” wide concrete bulb tee beam bridge with a piling foundation. The bridge is located on F.S. Road No. 2541 at milepost 3.1 at the Deer Creek crossing. Improvements consist of, but are not limited to; structural excavation, placement of riprap, installation of steel H piling and cast-in-place concrete pile cap, installation of precast concrete wingwalls, installation of prestressed concrete bulb tee beams, embankment and excavation of the roadway approaches, and road surfacing.

This project is located in the Bonners Ferry Ranger District of Idaho Panhandle National Forest, approximately 18 miles north east of Bonners Ferry in Boundary County, Idaho. Refer to the location map on the title sheet of the plans.

104 - Control of Work Deletions

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:

Crushed Aggregate Source – Contractor Furnished Riprap Source – Contractor Furnished Structural Backfill Material Source – Contractor Furnished Waste Area – Government Furnished– A waste site for unsuitable and excess material and disposal of clearing and grubbing debris is available west of the bridge site as shown on the cover sheet of the plans. All material shall be deposited as directed by the CO.

Embankment Source – Government Furnished – The contractor shall use suitable structure excavation material for embankment construction. Additional material may be obtained from the borrow source location available west of the bridge site as shown on the cover sheet of the plans. Following final removal of borrow material, the contractor shall reclaim and seed the borrow source as directed by the CO. This additional seeding is incidental to work item 20411.

Materials Stockpile Site – Government Furnished –The Contractor will be allowed to stockpile material, including riprap, crushed aggregate, and bridge components, adjacent to the existing roadway. Materials must be stockpiled in such a manner as to allow for safe passage of the general public along the road access and to avoid damage to any trees at the culvert site. Provide the CO 72 hours advance notification prior to stockpiling any materials at the construction sites.

Backfill Material – Government Furnished – Suitable structure excavation material may be utilized as backfill. Additional material may be obtained from the borrow source location available west of the bridge site as shown on the cover sheet of the plans.

Under (b) Contractor-located sources add the following:

Prior to any pit development or use of materials, the pit site shall be approved by the CO that the pit site is free of noxious weed as listed on the "All States Noxious Weeds List”.

105.02(a) Government Provided Sources.

Add the following:

Comply with the requirements of 30 CFR 56, subparts B and H. Use all suitable material for aggregate regardless of size unless otherwise designated. When required, re-establish vegetation in disturbed areas according to section 625.

105.05 Use of Material Found in the Work.

Delete 105.05 (a) and (b) and the last sentence of the second paragraph and substitute the following:

Materials produced or processed from Government lands in excess of the quantities required for performance of this contract are the property of the Government. The Government is not obligated to make reimbursement for the cost of producing these materials.

106 - Acceptance of Work

106.01 Conformity with Contract Requirements.

Delete Subsection 106.01 and substitute the following:

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 and replace work that does not conform to the contract, or to prevailing industry standards where no specific contract requirements are noted, 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.

106.07 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.

“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 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 108 Delete

Delete Section 108 in its entirety.

109 - Measurement and Payment 109 Deletions

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.

Add the following Subsection:

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.

151 - Mobilization

151.01 Description

Add the following requirements:

Contractor shall shore existing bridge adequately for utilization as a work bridge. Prior to heavy loading, bridge shoring must get approval from the C.O.

Noxious Weed Control Requirements:

All construction equipment to be used at the job site shall be cleaned and certified free of noxious weeds and their seeds prior to entrance on to forest lands, whether they are owned, leased or borrowed by the Contractor or any subcontractors. “Construction equipment” does not include personal vehicles or support equipment that remains on the main travel route.

Cleaning shall occur off forest land.

Construction equipment shall be visually inspected by the COR and each one certified in writing to be reasonably clean and weed free. Inspections will take place at a forest administrative site with the Contractor providing at least 24 hours notice. The location of the administrative site is to be agreed upon in advance between the COR and the Contractor or Subcontractor. Equipment is expected to proceed directly to the job site following the inspection and to not leave the designated weed management district wherein the job site exists.

Certification shall remain valid for each identified piece of equipment for the duration of the specified project and only as long as the equipment remains at the job site or within the designated weed management district. Equipment leaving the designated weed management district will need to be recertified as weed free before being allowed to return to the job site.

151.03 Payment

Add the following:

Include all costs associated with the bridge shoring and cleaning of equipment in the unit price for Mobilization.

152 – Construction Survey And Staking

152.03 Survey and Staking Requirements.

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 105.02(b)

Certification

Certification

Approval

Certification

Approval

FSSS 622.02

155 - Schedules for Construction Contracts 155 Delete

Delete Section 155 in its entirety.

156 - Public Traffic

156.03 Accommodating Traffic During Work.

Delete the following from the last paragraph:

According to Subsection 106.07(b)

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. 2541 at the bridge site to through traffic for up to 45 calendar days. It is the responsibility of the Contractor to schedule delivery of materials, equipment and all necessary supplies to the site, to ensure that the bridge can be substantially completed within the above specified contract time. The Contractor shall give the CO at least three weeks advanced written notice prior to any road closure. The Contractor shall be responsible for providing, installing, maintaining, and removal of warning signs and type 3 barricades required for the road closure period. At the Contractor’s written request, traffic delays up to one hour will be approved should the project work necessitate short traffic delays outside the closure period.

Contractor shall provide and install a road closed ahead signs for the duration of the project. The road closed signs are to be placed as indicated below.

Junction of Road 2540 and 2541.

Do not perform any work that interferes or conflicts with traffic until a traffic control plan has been approved by the Contracting Officer. Post construction signs and traffic control devices in conformance with MUTCD. All required signs will be in place and approved prior to beginning work on the project. Contractor will maintain construction signing consistent with the site work being performed.

156.08 Traffic and Safety Supervisor.

Delete this subsection in its entirety.

156.10 Measurement and Payment

Delete the entire subsection and replace with the following:

Include all costs associated with the traffic control and signing under other pay items for the Deer Creek Bridge replacement.

157 - Soil Erosion Control

157.02 Materials.

Add the following:

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.

201 – CLEARING AND GRUBBING

201.03 General.

Delete the last sentence:

201.04 Clearing

Delete subsections (c) and (d) and replace with the following:

(c) In areas outside the excavation, embankment, and slope rounding limits, cut stumps to within 12 inches or one-third of the stump diameter of the ground, whichever is higher, measured on the side adjacent to the highest ground.

(d) Dead trees over 6 inches in diameter measured 12 inches above the ground that lean toward the road and are sufficiently tall to reach the roadbed are designated for cutting.

(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. Do not clear above existing cuts which are not disturbed by construction.

(f) Deck logs over 6 inches in diameter on site such that logs are piled parallel to the other; can reasonably be removed by standard log loading equipment; will not damage standing trees; will not interfere with drainage, and will not roll. Log decks are to be free of brush and soil. Cut material into lengths not exceeding 30 feet, and remove all limbs.

203 – Removal of Structures and Obstructions

203.01 Delete and replace with the following:

This work consists of disposing of clearing slash, salvaging, removing and disposing of buildings, fences, structures, pavements, culverts, utilities, curbs, sidewalks, and other obstructions.

203.03 Salvaging Material.

Add the following:

The existing timber stringers shall be removed and transported to Forest Service District Bone Yard in Bonners Ferry. All nails and bolts shall be removed from the timber stringers. Before transporting the salvaged material, the Contractor shall contact the CO confirming the location and time of transport.

203.05 Disposing of Material.

Modify this subsection as follows:

(a) Remove from project. Add the following:

All materials designated for removal become 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.

(d) Placing Slash on Embankment Slopes. Place construction slash, under 1 inch in diameter, on completed embankment slopes and the old roadway bed or scatter as directed by the CO to reduce soil erosion. Place construction slash as flat as practicable on the completed slope. Do not place slash on embankment slopes closer than 2 feet, slope distance, from the road surface. Priority for use of available slash is for: (1) through fills; (2) insides of curves; and (3) ditch relief outlets. All slash material over 1 inches in diameter shall be disposed off forest lands or as per directed by the CO.

204 - Excavation and Embankment

204.11 Compaction.

Delete and replace with the following:

Layer Placement (Roller Compaction) Method. Place material by end dumping to the minimum depth needed for operation of spreading equipment. Adjust the moisture content of the material to obtain a mass that will not visibly deflect under the load of the hauling and spreading equipment. Operate compaction equipment over the full width of each layer until visible deformation of the layer ceases or, when a sheepsfoot roller is used, the roller “walks out” of the layer. Make at least three complete passes.

204.13 Sloping, Shaping, and Finishing.

Delete section (d) and add the following:

d) Finishing. Finish the roadbed to be smooth and uniform utilizing a motor grader. The roadway shall be shaped to conform to the typical sections. Remove unsuitable material from the roadbed and replace it with suitable material. Remove all material larger than 6 inches from the top 6 inches of the roadbed and replace with suitable material.

Ensure that the embankment material is visibly moist during shaping and dressing. Bring low sections, holes, cracks, or depressions to grade with suitable material. Maintain proper ditch drainage.

204.14 Disposal of Unsuitable or Excess Material.

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

Dispose of unsuitable or excess material at designated sites or as directed by the CO.

208 - Structure Excavation And Backfill For Selected Major Structures

208.04 General.

Add the following:

Use all suitable material in the construction of the roadway embankment. 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. Backfill material shall be sorted from the designated borrow site or on-site material meeting the requirements of FP-03 section 704.03.

208.08 Dewatering.

Delete the subsection and add the following:

Submit a dewatering plan according to Section 157.03.

Construct diversion prior to performing any excavation and according to Sections 157.08 and 157.09. Construct diversions using water tight, non-eroding methods. Employ settling basins or other methods so that muddy water is not returned to stream. Install, operate, and remove diversions in a manner that minimizes erosion and sedimentation.

208.12 Acceptance.

Test structural backfill under pile caps and backfill material 10 feet from the pile caps per Table 208-1.

251 - Riprap

251.01 Description.

Replace with the following:

This work consists of furnishing and placing riprap for bank protection, slope protection, drainage structures, erosion control, and grade control structures.

251.07 Acceptance.

Delete the fourth sentence and add the following:

Structure excavation and backfill will be evaluated under section 208.

251.09 Payment.

Add the following:

The cost of excavation, embankment, geotextile and haul required for placement of riprap is incidental to the riprap pay item.

551 – DRIVEN PILES

551.01 Description

Add the following:

The geotechnical report is included in Appendix A. The geotechnical report is for the Contractor’s information only.

551.04 Pile Lengths

Delete and replace with the following:

Furnish piles in the number and type shown on the drawings and total length shown in the bid schedule, which includes the dynamic test piles. Increase length, as necessary, to provide fresh heading and to provide for the Contractor’s method of operation as approved by the C.O.

553 – PRESTRESSED CONCRETE

553.05 Method Approval.

Add the following:

Precast prestressed concrete members must be manufactured by a plant certified by the Prestressed Concrete Institute (PCI) or the National Precast Concrete Association (NPCA) or as required in Supplemental Specification 553A. Submit a copy of the transmittal letter of the latest PCI inspection or NPCA inspection with the shop drawings.

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 ………………………………………………………… 725.40

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

Sealants, Fillers, Seals, & Sleeves …………………………….. 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 the following certifications:

· Precast / Prestressed Concrete Institute (PCI)

· Bridge 4, Prestressed Deflected-Strand Bridge Beams (Superstructure).

· National Precast Concrete Association (NPCA)

· Precast and Prestressed

Submit a copy of the transmittal letter of the latest PCI or NPCA inspection/certification 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:

Reinforcing Steel ………………………………………………... 554

Storing, Transporting, & Erecting ………………………………. 553.08

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.04 Casting Yard. The precasting of concrete structural members may be done at a casting yard location selected by the Contractor.

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 Rental Equipment.

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

Hydraulic Excavator. Provide a track mounted hydraulic excavator, 15 years or newer. Bucket must be equipped with a hydraulic "thumb". It is anticipated that an excavator of a size capable of performing the excavation needs for the project, i.e. structure excavation, riprap construction, relocation of stream gauging station, etc., will be of an adequate size to be acceptable for any work that the Contractor may be directed to perform under this section. Contractor is required to get approval of the size of the Hydraulic Excavator from the Contracting Officer prior to any work taking place.

Large Dump Truck. Provide a large dump truck with a minimum capacity of 12 cubic yards, 1990 model year or newer. Contractor is required to get approval of the size of the Dump Truck from the Contracting Officer prior to any work taking place.

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

625 - Turf Establishment

625.07 Seeding.

Add the following:

The application of seed to cut & fill slopes shall be within fourteen (14) days after the road has been constructed to final grade, unless otherwise agreed by the CO. Cut & Fill slopes damaged by construction activities such as surface blading or additional excavation shall be reseeded within ten (10) days of the damage.

Application Methods for Seed, Fertilizer and Mulch:

Apply seed by the Dry Method. The kind of seed to be furnished and the amounts to be applied in terms of pure live seed shall be as follows:

Seed Mix

NATIVE MOIST SITE MIX

Pounds of seed to be furnished per acre shall be obtained by dividing the pounds of pure live seed (PLS) required per acre by the product of the percent purity & percent germination.

Example:

(5 lbs. PLS/acre) = 6.55 lb.

(0.90 x 0.85) where purity = 90% & germination = 85%

Fertilizer shall be applied at a rate of 100 pounds per acre in one application by the Dry Method and have a chemical analysis as listed below:

Nutrient

Percent

Nitrogen (N)

Phosphorus (P2O5)

Potassium (K)

625.08 Delete the entire subsection and replace with the following:

Mulching

“Provide certified noxious weed free straw for mulch. Furnish the Contracting Officer with a copy of the certification.

Apply mulch at the rate of 3000 pounds per acre. Apply mulch to all areas of disturbed earth including borrow/waste areas.

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:

(1) After 72 hours, 25 MPa (3500 psi).

(2) At 7 days, 40 MPa (6000 psi).

(3) After 28 days, 50 MPa (7200 psi).

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.

1. MASTERFLOW 928 GROUT, manufactured by Chemrex.

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

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

4. 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.

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

APPENDIX A – GEOTECHNICAL EVALUATION

DEER CREEK BRIDGE/PLACER CONNECTION

FOUNDATION/PILE SUMMARY

2/19/2010 Prepared By: Jim Nieman, Geotechnical Engineer/Minerals/OSC

Idaho Panhandle National Forest The site was not drilled. The foundation/subsurface conditions that exist at the site are based upon local geologic conditions, downstream lower elevation observations of soil types, and drilling information from a bridge site located in the same drainage that has a similar geologic and geomorphic environment. Soil parameters for the foundation analysis were extrapolated from the above observations and are thus educated estimates only.

The foundation conditions that likely exist at depth consist of glacial materials that would classify out as medium dense to dense gravelly SM sands with interbedded alluvial and or outwash sandy GP gravels in areas. These materials are what the static piling analysis was based on. It should be noted that there are very silty tills in the area and these could also be encountered and would provide less bearing capacity. Previous drilling in the same drainage a few miles downstream encountered a very dense basal till material with up to 30% cobbles and small boulders. It is likely that this material extends throughout much of the drainage and could also be encountered at depth. This material would provide greater bearing capacities.

1. Use of 12x74 piles is recommended. This heavier pile would drive better through the coarser alluvial material at the surface and into the basal till material should it be encountered. It would also have a 40% larger end area for bearing vs a 12x53 H pile. Formation of a soil plug approximating .3 of the pile point area was used in addition to the actual pile end area in estimating the pile point load. The pile length should be approximately 46 feet.

2. The piling should be driven to a minimum ultimate bearing capacity as shown on the plans. With an assumed pile cutoff elevation of 988 (base elevation of assumed maximum scour that could occur) the pile would need to be driven 33 feet below this to an elevation of 955.

3. Due to the relatively wide spacing of the piles and the anticipated foundation materials, the minimum depth for driving the piles is 14 feet below the pile cutoff to elevation 974.

5. One may want to consider driving the test pile so that an additional pile per abutment could be placed with a reduced equal spacing between the pilings if the test pile bearing capacity is less than what is assumed. Six piles per abutment would lower the load per pile to 24.84 tons.

6. If the very dense basal till material is encountered the required bearing capacity would be achieved relatively quickly. Dependent on elevation, one should try and drive the pile into this denser material a minimum of two feet.

ROAD No. 2541 CLOSED

X MILES AHEAD

(Dates Closed) iii