J-3_-_Construction_Specifications.pdf

KOOTENAI NATIONAL FOREST

SWINGING BRIDGE REPLACEMENT

Table of Contents

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

151 - Mobilization

152 – Construction Survey and Staking

153 – Contractor Quality Control

155 - Schedules for Construction Contracts

156 - Public Traffic

157 - Soil Erosion Control

203 - Removal of Structures and Obstructions

204 - Excavation and Embankment

208 - Structure Excavation and Backfill for Selected Major Structures

256 – Micropile

555 - Steel Structures

555A – Cable and Wire Rope

622 - Rental Equipment

625 – Turf Establishment

722 – Anchor Material

725 - Miscellaneous Material

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:

mp Milepost ppm Part Per Million

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.

http://www.nist.gov/

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.

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:

Waste Site – Government Furnished – A waste site for excess and unsuitable excavation material will be designated by the CO. It is anticipated that any material will be wasted directly adjacent to the bridge approaches. 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- Government Furnished – Prior to the start of the work, Contractor will be allowed to stockpile or stage materials at the following locations:

1. Troy Airport FAA Identifier: 57S. Contractor may use the airport, 7 miles west of the site, for staging of materials that will be transported by helicopter. Coordinate any work and location for staging of materials with CO. Forest will coordinate permission with Lincoln County (Troy Airport Board).

2. Trailhead turn-out. Access and staging at the trailhead/ parking lot is limited.

Approximately 350-foot east of the trailhead parking lot is a turn-out and small area that Contractor may use for vehicle parking and miscellaneous storage (See Section C-6 Map). The turn-out area has foot access to the trail. Helicopter loading at trailhead is not allowed. Forest will coordinate permissions with Lincoln County for use of trailhead turn-out for staging.

3. Construction Site. Four areas have been identified, as shown in Section C-6 Map, for staging of materials at the construction site adjacent to the Swinging Bridge. Due to cultural resources, materials may only be staged in identified locations.

4. Contractor must provide CO 72 hours advance notification prior to stockpiling any materials at the bridge site. Security of the materials at the site is the responsibility of the Contractor.

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

Prior to any pit development or use of materials, the Contractor shall 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.

Contractor will provide copies of all spill related clean up and closure documentation and correspondence from regulatory agencies to CO within 7 working days of spill.

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

Delete Section 151 in its entirety and replace with the following.

Description

151.01 This work consists of moving personnel, equipment, material, and incidentals to the project and performing all work necessary before beginning work at the project site; obtaining of permits, insurance, and bonds. This work also includes 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, according to the requirements within.

The contract period for the completion of the work includes two construction seasons.

A maximum of 8 days of helicopter flight allowed between June 16 and March 31 during each construction season. The number of helicopter flights per day will be the minimum necessary to move material to the work site. Helicopter use will be efficient and practical, minimizing the number of days necessary. Contractor will notify CO of scheduled flights 5 days in advance of flight. Forest will coordinate with Forest Service Fire Dispatch on flights.

For the protection of grizzly bears, the following restrictions shall be adhered to:

1. No Helicopter use from den emergence on April 1 through June 15.

2. No rock drilling (or other mechanized noise) from den emergence on April 1 through

June 15.

The Contractor is required to submit a Safety Plan for their scope of work. The safety plan will include fall protection, water rescue, and aviation.

Construction Requirements

151.02 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 72 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, in 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.

Aquatic:

Wash the outside and inside of equipment that will come in contact with waterbodies, such as streams, lakes, wetlands, and ditches with one of the following approved methods:

1. Wash debris, mud, sediments, organisms, plant material and fragments from all equipment that will enter water feature. Allow equipment to thoroughly air dry (inside and out) for a minimum of 48 hours.

2. Wash equipment with heated water (>140° F) for a minimum of ten minutes and until all mud, sediments, organisms, plant material and fragments are removed from equipment.

Allow equipment to thoroughly air dry for a minimum of two hours, or until no visible moisture exits.

3. Wash equipment with a minimum of 5% Quaternary ammonium solution (Quat128 Sparquat256) for a minimum of ten minutes and until all mud, sediments, organisms, plant material and fragments are removed from equipment. Allow equipment to thoroughly air dry for a minimum of two hours, or until no visible moisture exits.

Only equipment inspected by the Forest Service will be allowed to operate within the project.

All subsequent move-ins of equipment to the project area will be treated in the same manner as the initial move-in

Equipment will be considered free of debris, mud, sediments, organisms, plant material and fragments when a visual inspection does not disclose such material. Disassembly of equipment, components or the need for specialized inspection tools is not required.

Measurement

Clean equipment prior to moving onto this project. The initial cleaning will not be included in the measurement for payment. Payment for cleaning will only be made if subsequent cleanings are ordered by the CO. Measurement shall be on an “each” basis, meaning one complete cleaning of all equipment required for this contract. Subsequent cleanings necessitated by the Contractor’s actions but not directed by the CO will not be included in the measurement for payment.

Measure mobilization according to Subsection 109.02.

Payment

151.03 The accepted quantity, measured as provided in Subsection 109.02, will be paid at the contract price per unit of measurement for the Section 151 pay item shown in the bid schedule.

Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

Progress payments for mobilization lump sum will be paid as follows:

(a) If applicable, bond premiums will be reimbursed according to FAR Clause 52.232-5 Payments Under Fixed-Price Construction Contracts, after receipt of the evidence of payment.

(b) When 5 percent of the original contract amount is earned from other bid items, 50 percent of the mobilization item, or 5 percent of the original contract amount, whichever is less, will be paid.

(c) When 10 percent of the original contract amount is earned from other bid items, 100 percent of the mobilization item, or 10 percent of the original contract amount, whichever is less, will be paid.

(d) Any portion of the mobilization item in excess of 10 percent of the original contract amount will be paid after final acceptance.

Include all costs associated with the initial cleaning of equipment in the unit bid price for Mobilization. Cleaning for subsequent move-ins will not be paid for unless after a suspension ordered by the CO.

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

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

Log No.

Incidental to

Pay Item(s) Description of Submittal

Type of Submittal

Requirement found in

Specification No.

/Drawings

Additional Specification References

1 151 Weed Free Material Source Certification

Material Certification FSSS 105.02(b)

2 151 Hazardous Spill Plan Plan FSSS 107.10

3 151 Contractor Quality Control Plan Plan 153.02 552.09 4 151 Traffic Control Plan Plan FSSS 156.03

5 151 Bridge Erection Plan Plan, Drawings, Calculations Drawings

6 151 Safety Plan Plan

7 157 Soil Erosion and Pollution Control Plan Plan FSSS 157.03

8 256 Micropile Design/ Drawings FSSS 256.04 256, Drawings

9 256 Micropile Qualifications FSSS 256.03 256

10 256 Steel Micropile Order List, Shop Drawings

FSSS 722.05,

Drawings

FSSS 256,

Drawings

11 256 Steel Micropile Material Certification

FSSS 722.05,

Drawings

FSSS 256,

Drawings

12 256 Micropile Grout Material Certification FSSS 722.06 FSSS 256, Drawings

13 256 Micropile Grout Mix Design FSSS 722.06 FSSS 256, Drawings

14 552 Structural Concrete: Mix Design Mix Design 552.03 553, 553A, Drawings

15 552 Structural Concrete: Testing Test Results 552.19 106, 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

16 554 Reinforcing Steel Order List 554.03 554, 709, Drawings

17 553 Reinforcing Steel and Wire Rope Material Certification 709.01 553, Drawings

18 553 Miscellaneous Material: Grout Material Certification FSSS 725.40 553, Drawings

19 553 Miscellaneous Material: Grout Product Approval FSSS 725.40 553, Drawings 20 555 Steel Structures Shop Drawing 555.06 104

21 555 Steel Structures: AISC Steel Certification

Fabrication Certification 555.03 FSSS 555.03

22 555 Steel Structures: Materials Material Certification 555.21 106

23 555A Cable and Wire Rope Shop Drawing 555A.13 FSSS 555

24 555A Cable and Wire Rope Fabrication Certification 555A.13 FSSS 555

25 555A Cable and Wire Rope Material Certification 555A.13 FSSS 555

26 555A Cable and Wire Rope Erection Plan 555A.13 FSSS 555

27 555A Cable and Wire Rope Manufacturer’s Catalog Cuts 555A.13 FSSS 555

28 557 Timber Structures Shop Drawing 104.03 557, Drawings

29 557 Timber Structures: Materials Material Certification 557.19 106, 716, Drawings

30 619 Fencing Shop Drawings

& Product Information

Drawings

31 622 Equipment Rental Equipment Approval FSSS 622.02

32 625 Fertilizer, Seed Mix, & Mulch Material Certification 625.10

106, FSSS 625,

155 - Schedules for Construction Contracts

155 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. Kootenai Falls and the swinging bridge are locally important year round high use recreation areas, with typical summer visitation of 600-1000 people a day. The desire is to maintain public access to the swinging bridge to the extent practical through-out the project.

Add the following project specific requirements:

Site closure - defined as closure of the trail and area starting on swinging bridge trail where it parallels the Railroad fence, over the swinging bridge, and the area immediately around the bridge structure on the north bank of the Kootenai River, See Section C-6 Map.

Work area closure- area in immediate vicinity of equipment, materials, or excavation.

No construction, removal activities, or closures, will occur on the 2nd or 3rd Friday of June, annually.

The Contractor will be allowed to close the existing Swinging Bridge site and/or work are during construction, with the following constraints:

1. From September 10th through June 15st the site may be closed to the public for up to 21 consecutive days annually. See Section 151 for helicopter and noise restrictions (April 1st through June 15th).

2. From June 16th through September 9th a limit of up to a) 8 site closures to the public, of up to 3 consecutive days each, OR b) 4 site closures to the public of up to 5 consecutive days each will be allowed. The total combination of site day closures will not exceed 24 days during this period.

3. No site closures allowed on weekends or holidays, without prior written approval from

CO.

4. Site closures as described above (1-2) will be summited to CO a minimum of 30 working days prior to proposed closure.

5. During performance period, with the exception of closures described in 1 and 2 above, public access will be maintained to the existing swinging bridge at all times (day and night).

6. The traffic control plan will address public safety and site security during performance period. This would include during; work periods with site closure to public, work periods with no restrictions to public, and non-work periods when there is equipment, supplies or open excavations on site.

7. Contractor will be allowed to flag off and restrict public access to the work area, as long a public access remains to the existing swinging bridge.

The Contractor is responsible for the security of equipment, materials, and construction site at all times during the project.

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 specified contract time. The Contractor shall be responsible for providing, installing, maintaining, and removal of warning signs and barricades required for the site and work area 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.

157 - Soil Erosion Control

157.02 Materials

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) Drilling slurry fine sediment shall be prevented from entering the Kootenai River through settling basins or filtering. Remove cuttings from the site.

(b) Non-water, chemical-based drilling lubricant will be prevented from entering the Kootenai River.

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

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

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

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

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

(h) 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.

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

203.03 Salvaging Material.

Add the following to the last paragraph:

As shown on the drawings or at a location approved by the CO.

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.

(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:

Place material in layers that allow for compaction with hand tools (hand tampers) or other methods that will ensure compaction and minimize future settling.

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 approved 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 trail 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.

208.10 Backfill

Delete 1st sentence and replace the following:

Backfill with material meeting requirements under 703.03 – Backfill Material.

208.11 Compacting.

Delete this section and add the following:

Place material in layers that allow for compaction with hand tools (hand tampers) or other methods that will ensure compaction and minimize future settling.

208.12 Acceptance.

Delete reference to Table 208-1:

Delete Table 208-1:

256 – Micropile

Delete Section 256 in its entirety and replace with the following.

256.01 This work consists of installing micropiles for bridge abutment foundations in accordance with the Plan and these specifications. Provide micropiles consisting of all-thread reinforcing bars with diameter, yield strength, and corrosion protection as specified herein. Provide casing of minimum outside diameter, wall thickness, and yield strength as shown on the Plans and specified herein.

Material

256.02 Conform to the following Subsections:

Micropile Components FSSS 722.05 Micropile Grout FSSS 722.06

Construction Requirements

256.03 Qualifications. The Contractor or subcontractor performing the micropile work shall have completed at least 3 similar drilled foundation projects within the last 5 years that require special access drilling equipment. Submit a brief description of each project including the owning agency's name and current telephone number.

Provide a micropile project manager with at least 10 years’ experience in the construction of micropile foundations. Provide on-site supervisors and drill operators with at least 5 years of relevant experience installing grouted micropiles. At least 30 days before starting micropile work, identify the micropile project manager, on-site supervisors, and drill operators assigned to the project and submit a summary of each individual's experience.

256.04 Design/Drawings. At least 30 days before starting micropile work, submit drawings to CO for approval. Include the following in the submittal:

(a) A micropile installation schedule and details giving the following information:

(1) Micropile number, location, and installation sequence;

(2) Proposed drilling method, drill hole stabilization contingencies, testing, grouting, and installation methods and equipment;

(3) Drill hole diameter for micropile and casing requirements;

(4) Micropile delivered lengths and coupler designation (no field splices allowed);

(5) Micropile corrosion protection system;

(6) Centralizer type and location;

(7) Proposed method of mobilizing equipment, on and off loading of equipment, and staging areas.

256.05 Micropile Requirements.

(a) General. Provide steel micropiles of section and epoxy corrosion protection as indicated on the Plan and herein. Provide threaded couplers of equivalent strength and corrosion protection as the micropile bars.

(b) Micropile length. Provide micropiles with minimum length and load capacity as indicated on the Plan and based on load testing as described in Subsection 256.08.

(c) Corrosion Protection. Provide corrosion protection by epoxy coating in accordance with Subsection FSSS 722.05.

(d) Grout Cover. Provide minimum grout cover of 1 inch for micropile bar and casing sections.

(e) Centralizers. Use centralizers to ensure a minimum of 1 inch of grout cover around the outside of the micropile bars. Use centralizers that do not impede the free flow of grout up the drill hole. Position centralizers so their center-to-center spacing does not exceed 10 feet. Locate the lower centralizer a maximum of 5 feet from the bottom of the micropile length.

256.06 Storing and Handling. Handle and store micropiles and casing in a manner to avoid damage to the pile and any initiation of corrosion. Replace micropiles exhibiting abrasions, cuts, welds, weld splatter, corrosion or pitting. Remove any deleterious substances from the micropile or casing and clean effected surface areas of such contamination as might impair bond prior to installation.

256.07 Installation. Select drilling equipment, methods, and sequence consistent with anticipated ground conditions, environmental restrictions, and modify as necessary to provide finished micropiles per the intent of the Plans and Specifications. Do not disturb slope/site conditions, river quality, or previously installed micropiles. Observe ground conditions during drilling for heave, subsidence, or other instability; alter drilling and grouting procedures and/or sequencing if detrimental movements are evident as determined by the CO.

Drill micropile drill holes within 2 inches of the required location or as noted on the Plans. Drill the longitudinal axis of the drill hole parallel to the longitudinal axis of the micropile shown on the Plan.

Install the micropile within 2 degrees of the required inclination. Provide minimum drill hole diameter of 4.5 inches for micropile bars and 7.5 inches for casing sections as shown on the Plan.

Provide drill hole stabilization as necessary using casing or other means approved by the CO that will not adversely affect bond, slope stability, river or air quality. Drill micropile drill holes using compressed air system with provisions to contain cuttings. Control and properly dispose of drill cuttings, any groundwater, and excess grout in accordance with project environmental requirements and CO approval. Permanenly grout the micropile the same shift as drilling completion unless otherwise approved by the CO.

Insert the micropile in the drill hole to the required depth without driving, forcing, or in any manner potentially damaging to the micropile or epoxy coating. Provide tremie tubes extending to the bottom of the pile that will facilitate independent and complete grouting of the annulus between the pile and the drill hole. Inject the grout from the lowest point of the drill hole until the micropile and casing annulus are filled and uncontaminated grout discharges from the top of the hole around the micropile exterior annulus.

Where casing is used for drill hole stabilization, remove casing in a manner that maintains grout at least 10 feet above the bottom of the casing at all times. Where the micropile cannot be completely inserted, remove the micropile, and clean or redrill the hole to permit insertion and grouting under stable hole conditions.

Use a positive displacement pump to grout micropile into the drill hole using specified grout unless approved otherwise by CO. Use a grout pump equipped with a pressure gauge capable of measuring pressures of at least 150 pounds per square inch. Use well-mixed grout that is free of lumps or other indications of prior cement hydration. Continuously agitate the grout during placement. Place the grout in one continuous operation. Continue pressure grouting of the micropile until positive grout return is achieved at ground surface, grout take reaches 150% of the drill hole volume, grout pressure reaches 75 psi, or destabilizing slope movements are observed. Provide alternate grout procedures or mix for CO approval when grout cannot be successfully placed in accordance with the provisions of this subsection or the limiting conditions associated with excessive grout take are encountered.

Provide grout socks as incidental, contingency items for discretionary use as approved by the CO.

Record the quantity of the grout and the grout pressure for each micropile. Control the grout pressures to avoid excessive heaving, fracturing, or loss into rock discontinuities.

Provide continuous survey monitoring of the slope and micropiles in the immediate area during grouting for use in assessing potential detrimental performance. Stop grout placement and notify the CO immediately of any adverse grouting conditions, slope deformation, or micropile movement.

After grouting is complete, fill grout tubes with grout if they will remain in the hole. Wait a minimum of 3 days before load testing micropiles, or until grout compressive strength reaches 2000 psi.

256.08 Load Testing. Conduct pre-production verification load testing of the initial (1) micropile per abutment area and submit results to CO for review and acceptance of design bond adequacy and installation procedures prior to further micropile installation. Select vertical micropile location for load testing and submit to CO for approval prior to drilling and testing.Conduct load tests with a bond zone of not less than 20 feet of the micropile grouted and with a temporary testing free length of 10 feet minimum. Use a maximum test load not to exceed 60 percent of the minimum ultimate tensile strength of the steel section. Conduct load testing in accordance with ASTM D-3689-07 or D-1143-07 or as otherwise specified herein. Select load test locations per approval of the CO. Test piles used in successful load tests can be incorporated as production piles if approved by the CO.

(a) Testing equipment. Provide testing equipment consisting of:

(1) A dial gauge or vernier scale capable of measuring to 0.001 inch. Use a movement-measuring device having a minimum travel equal to the theoretical elastic elongation of the total anchor length at the maximum test load. Use a device with sufficient travel so the anchor movement is measured without resetting the device.

(2) A hydraulic jack and pump. Use a jack and a calibrated pressure gauge to measure the applied load. Have the jack and pressure gauge calibrated as a unit by an independent firm within 45 days of the start of ground anchor work. Use a pressure gauge graduated in 100-pound per square inch increments or less. Use a jack having a minimum ram travel equal to the theoretical elastic elongation of the total anchor length at the maximum test load.

(3) A calibrated reference gauge. Have the reference gauge calibrated with the test jack and pressure gauge kept at the project site.

(b) Verification tests. Perform the verification test as indicated in Table 256-1.

Raise the load from one increment to another immediately after recording the micropile movement. Measure and record the micropile movement to the nearest 0.001 inch with respect to an independent fixed reference point at the alignment load and at each load increment.

Monitor the load with a pressure gauge. Place the reference pressure gauge in series with the pressure gauge during each performance test. If the load measured by the pressure gauge and the load measured by the reference pressure gauge differ by more than 10 percent, recalibrate the jack, pressure gauge, and reference pressure gauge. At load increments other than the maximum test load, hold the load just long enough to obtain the movement reading.

Table 256-1 Verification Test Load Sequence

Test Sequence

Test Load Increment

A 0.25D 0.50D 0.75D 1.00D 1.25D 1.50D Reduce to Lock-Off

Load 1 • •

2 • • •

3 • • • •

4 • • • • •

5 • • • • • •

6 • • • • • • • •

Note: A = Alignment load; D = Design load.

Hold the maximum test load for a minimum of 10 minutes. Repump the jack as necessary in order to maintain a constant load. Begin the load-hold period as soon as the maximum test load is applied.

Measure and record the micropile movement at 1, 2, 3, 4, 5, 6, and 10 minutes. If the micropile movement between 1 and 10 minutes exceeds 0.04 inches, continue holding the maximum test load and record movement at 15, 20, 25, 30, 45, and 60 minutes.

Plot the micropile movement versus the maximum load for each test sequence in Table 256-1, and plot the residual movement of the micropile at each alignment load versus the highest previously applied load.

256.09 Acceptance. Evaluate tested micropiles based on the verification test results as follows:

(a) After a 10-minute hold, the micropile carries the maximum test load with less than 0.04 inches of movement between 1 and 10 minutes and the total movement at the maximum test load exceeds 80 percent of the theoretical elastic elongation of the unbonded length.

(b) After a 60-minute hold, the micropile carries the maximum test load with a creep rate that does not exceed 0.08 inches per log cycle of time and the total movement at the maximum test load exceeds 80 percent of the theoretical elastic elongation of the unbonded length.

Replace micropiles and conduct additional verification testing at contractor’s expense where failure occurs due to poor installation or improper load test procedures/apparatus as determined by the CO. Replace all micropiles from failed verification testing in accordance with contract unit prices when unacceptable verification test results are attributed to ground conditions as determined by the CO. Do not retest failed micropiles. Modify the design or construction procedures, or both to produce satisfactory test results before proceeding with further verification testing or production micropile installation. Submit design or procedural modifications to the CO for review before proceeding; review and comment will be made within 24 hours.

256.10 Measure the Section 256 items listed in the bid schedule according to Subsection 109.02 and the following as applicable.

Payment

256.11 Micropiles that are successfully installed and accepted per this Provision Item, including those accepted by Verification Tests, will be measured from the bottom of the footing and paid for by the lineal foot. Verification Testing will be paid for per each test completed and accepted by the CO.

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555 - Steel Structures

555.03 General.

Add the following:

In lieu of AISC Simple Steel Bridge Structures certification, Contractor shall retain a professional engineer to provide quality assurance for the work by inspecting and certifying in writing the steel members are fabricated in accordance to the specifications and shall include but not limited to:

a) Shop drawing review.

b) Material mill certifications.

c) Welding - qualifications of personnel.

d) Welding.

e) Fabrication.

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

555.03 General.

Fracture critical fabrication is not required.

Remove the following sentence:

Fabricate fracture critical elements according to the AASHTO Guide Specifications for Fracture Critical Non-Redundant Steel Bridge Members.

555.06 Drawings (Shop Drawings, Erection Drawings, and Transportation Drawings).

(e) Install and ensure proper tensioning of high-strength bolts using direct tension indicators (DTI), tension control (twist-off), or turn-of-nut installation method. Submit tensioning approach and installation instructions with the steel shop drawings.

555.19 Erection

AISC certified steel erectors are not required.

Remove the following sentence:

Use steel erectors certified under the AISC Quality Certification Program.

555A – Cable and Wire Rope

555A.01 Work. This work consists of the manufacture, fabrication, furnishing, erection, installation, testing and placing into satisfactory operating condition, the main cables, vertical wire rope hangers, cable hog ties, and ¾” wire rope secondary cables necessary for the operation of the swinging bridge.

The main cables at each site are 1 ¾ inch diameter structural strand spanning the river. The main cable act as handrails for the bridge and include an adjustable socket at each end. The main cable is connected to towers on each side of the river.

Include in the work the furnishing, installation, and adjustment for the proper operation of the cable systems. Include items for the above, but not be limited to, the following:

a) Main cable structural strands.

b) 3/8” diameter vertical hanger wire ropes.

c) Adjustable structural strand sockets.

d) ¾”diameter wire ropes.

e) 3/32” diameter cable hog ties

f) Necessary cable connection assemblies and miscellaneous hardware.

g) Equipment necessary for proper tensioning and erection of the cables.

Supply all apparatus, tools, devices, materials, and labor to manufacture, finish, ship, install, erect, adjust, test, and tension the structural strand and wire ropes in an approved manner as provided herein. Furnish all apparatus, tools, devices, materials and labor, not specifically stated or included, which may be necessary for the work. Install and adjust with craft labor or personnel experienced in this class work.

Materials

555A.02 Requirements. Provide items and materials as indicated on the drawings and as specified herein.

555A.03 Applicable Standards.

a) American Society for Testing and Materials (ASTM), latest version of all applicable standards

b) American Iron and Steel Institute (AISI), latest version of all applicable standards.

c) American National Standards Institute (ANSI), latest version of all applicable standards.

d) American Welding Society (AWS): Bridge Welding Code, D1.5-95.

555A.04 Inspection. Materials and fabrication procedures are subject to inspection and testing in the mill, shop, and field by the CO. Such inspections and testing will not relieve the Contractor of responsibility for providing materials and fabrication procedures in compliance with specified requirements.

555A.05 General. Supply all new materials that conform to standard ASTM and other specifications included previously and indicated on the drawings and herein, or as may be otherwise applicable.

555A.06 Standard Products. Use only materials and equipment that are essentially the standard cataloged products of manufacturer’s regularly engaged in production of such materials or equipment and be the manufacturer’s latest design that complies with the specification requirements. Use materials and equipment essentially duplicate to items that have been in satisfactory commercial or industrial use at least three years prior to bid opening. Where two components of the same type are required, use components of a single manufacturer; however, all individual components combined to form the system need not be of one single manufacturer.

Securely affix a nameplate in a conspicuous place, displaying the manufacturer’s name, address, model and serial number of each major component of equipment. Displaying the nameplate of the distributing agent will not satisfy this requirement.

555A.07 Manufacturer’s Recommendations. Where installation is required to be in accordance with manufacturer’s recommendations, furnish printed copies of these recommendations to the CO prior to installation. Installation of the item will not be allowed to proceed until the recommendations are received. Failure to furnish these recommendations can be cause for rejection of the material.

555A.08 Vertical Hanger Wire Rope. Use galvanized wire rope with 3/8 inch diameter, made of Extra Improved Plow Steel with a minimum ultimate tensile strength of 15,000 pounds, and be 6 x 19 class filler wire construction with independent wire rope core (IWRC) in accordance with Federal Specification RR-W-410 latest revision. Use right regular lay wire rope. Splicing of the rope or individual strands is not permitted. Alternate rope type may be submitted for approval.

555A.09 3/4" Diameter Wire Rope. Use pre-stretched galvanized wire rope with 3/4 inch diameter, made of Extra Improved Plow Steel with a minimum ultimate tensile strength of 58,000 pounds, and be 6 x 25 class filler wire construction with independent wire rope core (IWRC) in accordance with Federal Specification RR-W-410 latest revision. Use right regular lay wire rope. Splicing of the rope or individual strands is not permitted. Alternate rope type may be submitted for approval.

555A.10 3/32" Diameter Wire Rope. Use galvanized wire rope with 3/32 inch diameter with a minimum ultimate tensile strength of 1,000 pounds, and be 7 x 19 wire construction in accordance with Federal Specification RR-W-410 latest revision. Alternate rope type may be submitted for approval.

555A.11 Main Cable Structural Strand.

a) Use pre-stretched zinc-coated structural strand with 1 3/4 inch diameter with a minimum ultimate tensile strength of 376,000 pounds in accordance ASTM 586, class A zinc coating throughout. Splicing of structural strand or individual strands is not permitted.

b) Pre-stretch each main cable structural strand as follows:

i) Tension the strand to 188,000 pounds and hold that load for 5 minutes.

ii) Reduce the load to 19,000 pounds

iii) Repeat the load-unload cycle two more times.

iv) Release the load completely.

c) Measure the length of each structural strand between span length work points as shown as shown on the Contract Drawings. Measure the structural strand while it is twisted to the correct lay, and supported throughout its length in a straight line and under a tension equal to the Estimated Erection Tension shown for each site on the General Layout Contract Drawings, which is equal to its dead load at service. Measure strands by a method, approved by the CO, that ensures all strands will be measured under tension loading identical to the Erection Tension for each site.

d) With each strand assembly under tension for measurement, mark strand with a longitudinal streak of brightly colored paint or other marking to determine the exact relation of the strands and sockets with each other. When erected, ensure that the structural strand has no twist, and that wires composing the strand will occupy exactly the same relation to each other that existed when the structural strand was measured. Suitably mark or tag each strand for identification and erection.

555A.12 Adjustable Sockets Assembly.

a) Fabricate all adjustable take-up sockets assemblies from heat-treated alloy steel forgings or alloy steel castings, forged or cast without welds, from solid steel, conforming to ASTM A668, Class H or ASTM A148, Grade 90/60, or equal. Design and fabricate sockets in accordance with the best practice to withstand the minimum breaking force of structural strand without any permanent deformation occurring. Meet the dimensional requirements and mechanical requirements of Federal Specification RRS-550D. For take-up assemblies, manufacture threaded rods to meet ASTM A193 and nuts to ASTM A194. Shop galvanize sockets and take-up assemblies in accordance with ASTM A153.

b) Attach all sockets assemblies to strand by approved methods using zinc filling, which must entirely fill the cavity to their extreme ends and in a manner to prevent any backward slipping of the strands. Take care to protect the threads on take-up assembly while filling cavity.

c) Proof load all sockets and take-up assemblies after attachment to structural strand.

Proof load sockets and take-up assemblies at a force equal to 50…