Project_Specifications.pdf

Div. 1 V. 2022-9-6 Page | 1

Sleeping Bear Dunes National Lakeshore

Empire, MI.

BACKUP POWER GENERATION FOR

SLBE MAINTENANCE COMPLEX

PMIS # 324683

PROJECT SPECIFICATIONS

NATIONAL PARK SERVICE

10/1/2023

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TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

Section 01 10 00 - Division 01 Short Form General Requirements

Section 01 11 00A - PHOTOS – Photos of sites with proposed gas line marked.

DIVISION 03 – CONCRETE

Section 03 20 00 – Concrete Reinforcement

Section 03 30 00 – Cast-In-Place Concrete

DIVISION 23 – HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

Section 23 11 23 – Facility Natural-Gas Piping

DIVISION 26 – ELECTRICAL

Section 26 05 19 - Low-Voltage Electrical Power Conductors and Cables Section 26 05 33 - Raceways and Boxes for Electrical Systems Section 26 32 13 - Gaseous Engine Generators Section 26 36 00 - Transfer Switches

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SECTION 01 10 00

DIVISION 1 SHORT FORM GENERAL REQUIREMENTS

PART 1 – GENERAL

ITEM 1 - DESCRIPTION OF WORK

1.1 Background: The main power supplied to the Field Office Complex facilities dates back to 1953.

During weather and storm events, the power to these facilities has failed, on average, 8 times per year for the past decade. Emergency backup power generation, once installed, will enable the different divisions to stay operational and provide a functioning Incident Command Center in the event of an emergency.

1.2 Work Covered by the Contract Documents:

A. Project Location: Sleeping Bear Dunes National Lakeshore, 12447 Wisniewski Rd., Empire, MI 49630.

B. Work consists of:

1) For all three buildings: Contractor will supply and install three standalone commercial liquid cooled natural gas power generators. Generators will be powered by onsite natural gas. Generators will supply whole-building power requirements at normal operating loads. Contractor will install power generation capable of supplying automatic power in the event of a building losing power. All electrical equipment and gas line to be installed and sized per manufactured specifications and local codes. Contractor will supply all parts and labor to install generators, manufacture rated support pad, transfer switch, disconnect switch, gas line, electrical wire, conduit, and accessories to attach generators to the fuel source and building electrical power. Contractor will supply a reinforced concrete pad for the generator to be placed on. Pad size will conform with generator manufacturers specifications and will conform with local codes and ordinances. Cutouts in pad will be provided for gas and electrical stub-ups installed. Contractor will trench/burry electrical and gas line when leaving building to generator. Contractor will fill, compact, no seed, and regrade trenching where required. Electrical utility equipment is owned by Sleeping Bear Dunes National Lakeshore and contractor will be responsible for disconnecting and reconnecting high voltage cut-outs on electrical utility power to do the work. Gas utility connections at buildings is owned by Sleeping Bear Dunes National Lakeshore and contractor will be responsible for disconnecting and reconnecting gas supply to do the work.

2) Maintenance Office Building: 25kw liquid cooled 1phase 120 / 240v generator and a

200amp 1phase service rated automatic transfer switch. Generator to be located 10ft away from the west side of building close to gas meter. Wire to be run in underground

Page | 4 raceway from generator to building. Total length of electrical run approximately 100ft from generator to transfer switch. Electric line to be underground from building to generator.

(Appx 15’) The remainder can be run in crawl space under building to avoid trenching of entire run. Transfer switch to be mounted outside next to electrical utility meter base.

Electrical main distribution panel is located within 5 feet of meter base. Gas line to be run underground from gas meter to generator total length of pipe approximately 18ft, gas meter and shutoff is located on the west side of building. See pictures for further detail.

3) Carpenter Shop: 25kw liquid cooled 3phase 120 / 208v generator and a 200amp 3phase service rated automatic transfer switch. Generator to be located 10ft away from the west side of building close to electrical meter. Wire to be run in underground raceway from generator to transfer switch. Total length of electrical run approximately 35ft from generator to transfer switch. Transfer switch to be mounted outside next to electrical meter base. Electrical main distribution panel is located within 5 feet of meter base. Total length of gas line to be run approximately 120ft from generator to gas meter. Gas line to be underground from building to generator. (Appx 15’) Remainder of gas line to be ceiling mount or suspended mount when running thru the building to match existing. The gas meter and shutoff are located on east side of the building near entrance door. See pictures for further detail.

4) Natural Resources Office Building (MAINROC): 60kw 3phase liquid cooled 120 / 208v generator and a 600amp 3phase service rated automatic transfer switch or 600amp 3phase service rated fusible disconnect in conjunction with 600amp 3phase automatic non-service rated transfer switch. Generator to be located 10ft away from the south side of building close to electrical utility entrance CT cabinet. Wire to be run in underground raceway from generator to transfer switch disconnect. Total length of electrical run approximately 35ft from generator to transfer switch. Existing electrical utility supply cabinet is not used for CT monitoring and can be removed to accommodate new equipment installation. Total length of gas line approximately 200ft from generator to gas meter. Gas line to be underground from building to generator. (Appx 15’) Remainder of gas line to be mounted to the outside of building to match existing gas piping. Gas meter and shutoff is located on the north side and west corner of building. See pictures for further detail.

C. All work will be performed under a single contract.

D. Period of performance: Work shall be completed within 365 calendar days of the start date provided on the Notice to Proceed.

ITEM 2 – PROTECTING EXISTING UTILITIES

2.1 Protecting Existing Utilities: Notify Contracting Officer (CO), Contracting Officer’s Representative

(COR) and utility companies as required to request location services prior to and to coordinate any excavation/digging operations, and/or for demolition if within Scope of Work.

2.2 Contractor shall be responsible for locating and preventing damage to known utilities on site or indoors. If contractor damage occurs, alert CO and COR as soon as safely possible, and repair

Page | 5 utility at no additional expense to the Government. If damage occurs to an unknown utility, contact CO and COR as soon as safely possible.

2.3 Existing Utility Interruptions: Do not interrupt utilities serving facilities occupied by Government or others unless permitted under the following conditions and then only after arranging to provide temporary utility services according to requirements indicated below:

A. Notify CO and COR not less than five business days in advance of proposed utility interruptions.

B. Hours for Utility Shutdowns: Shutdowns shall not exceed 2 to 3 hours. Temporary provisions will be needed by the Contractor for periods longer than stated allowance or if required for critical systems as determined by COR.

ITEM 3 - CONTRACTOR’S USE OF PREMISES

3.1 Conduct of Operations: At all times the contractor shall conduct his operations in conformance with the rules and regulations promulgated by the Secretary of the Interior for the National Park Service, and applicable park rules and regulations prescribed by the Park Superintendent.

Contractor will find these rules and regulations at the following link: Superintendent's Compendium - Sleeping Bear Dunes National Lakeshore (U.S. National Park Service) (nps.gov)

A. No signs or advertisements (except those specified herein and as required for safety) shall be displayed on the construction site or within the park unless approved by the Contracting Officer.

B. Smoking is not permitted within any Federal building or within 25 feet of entrances, operable windows, or outdoor air intakes.

C. Public Use of Site: Contractor shall at all times conduct operations to ensure the least inconvenience to the public.

3.2 On-site work hours: Work shall be generally performed during normal business working hours of 8 a.m. to 4 p.m., Monday through Friday, except when otherwise indicated.

A. Work on Saturdays, Sundays, Federal holidays, early morning, or at night may not be performed without prior consent from the CO and COR. Submit requests for work outside of the stated normal business hours to the CO and COR for approval at least 48 hours in advance of the work.

The following Federal holidays are observed by the National Park Service:

New Year Day Martin Luther King, Jr’s Birthday Washington’s Birthday Memorial Day Juneteenth National Independence Day Independence Day https://www.nps.gov/slbe/learn/management/superintendent-compendium.htm https://www.nps.gov/slbe/learn/management/superintendent-compendium.htm

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Labor Day Columbus Day Veterans Day Thanksgiving Day Christmas Day

B. Note: Any of the above holidays falling on a Saturday will be observed on the preceding

Friday; holidays falling on Sunday will be observed on the following Monday. The specific day that each holiday is recognized for each year can be found at the following site: Federal Holidays (opm.gov).

3.3 Contractor Use of Site:

A. General: Contractor shall have limited use of the site for construction operations. Limit use of premises to construction area as shown on site plan. Do not disturb portions of project site beyond areas in which the work is indicated on map.

B. Driveways and Entrances: Keep driveways, access roads, and entrances serving premises clear and available to Government, Government's employees, and emergency vehicles at all times. Do not use these areas for parking or storage of materials. Schedule deliveries to minimize use of driveways and entrances.

C. Limit site disturbance area, including earthwork and clearing of vegetation.

1. Site disturbance will be limited to immediate areas around installation areas.

2. Access to and from generator location will be coordinated with the COR as needed.

Approaches to these areas will consist of grass.

D. Utilities:

1. Water Service: Water from existing water system is available for use without metering and without payment of use charges. Provide connections and extensions of services as required for construction operations without any additional permit costs. Use resources wisely and minimize waste of water.

2. Electric Power Service: Electric power from existing system is available for use without metering and without payment of use charges. Provide connections and extensions of services as required for construction operations without any additional permit costs.

Power may or may not meet your construction power tool requirements, provide generators if questionable.

3. Waste Operation:

a. Toilets: Contractor provided for contracting personnel, sufficiently lighted and ventilated toilet facilities in weatherproof, sight proof, handicap accessible (if required), sturdy enclosures with privacy locks. Coordinate with COR for approved location if not shown on attached site plan.

https://www.opm.gov/policy-data-oversight/pay-leave/federal-holidays/#url=2022 https://www.opm.gov/policy-data-oversight/pay-leave/federal-holidays/#url=2022

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b. Waste Removal / Recycling: Contractor is responsible for removing all waste created by the project. Contractor shall recycle to the highest degree possible and empty dumpsters as necessary to avoid debris on site. Locate as shown on site plan or coordinated with COR.

E. Security and Protection facilities:

1. Environmental Protection: Provide protection, operate temporary facilities, and conduct construction in ways and by methods that comply with state and federal environmental regulations and that minimize possible air, waterway, and subsoil contamination or pollution or other undesirable effects.

2. Cleaning of Equipment: The Contractor shall ensure that prior to moving on to the Project Area, all equipment, is free of soil, seeds, vegetative matter, or other debris that could contain or hold seeds. Ensure that all equipment has been pressure washed and is free of exotic species prior to start-up of operations and moving of equipment to Project Area.

Equipment shall be considered free of soil, seeds, and other debris when a visual inspection does not disclose such material. Disassembly of equipment components or specialized inspection tools are not required.

3. Tree and Plant Protection: N/A

4. Pest Control: Follow best practices to minimize attraction and harboring of rodents, roaches, and other pests and to perform extermination and control procedures at regular intervals so Project will be free of pests and their residues at project completion. Perform control operations lawfully, using environmentally safe materials.

5. Temporary Enclosures: N/A

6. Site Enclosure Fence: N/A

7. Security Enclosure and Lockup: N/A

3.4 Storage - Staging Areas:

A. Confine Storage of materials and equipment to the project staging area. Staging Areas will consist of 3 marked off parking areas closest to generators. Specific storage and staging area’s may be discussed at the preconstruction briefing. See Photos for locations.

3.5 Preservation of Natural Features: N/A

3.6 Hauling Restrictions: Contractor to verify path to site and meet state and county road requirements and height restrictions for all park work/access.

3.7 Housekeeping:

A. Keep project neat, orderly, and in a safe condition at all times.

1. Dispose of waste materials and recycling legally outside the park. The contractor shall not use park dumpsters.

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2. Address Recycling: Government goal is to salvage and recycle as much nonhazardous construction waste as possible. Use sustainable methods to extent possible during this project, recycling material as is probable with local means. Maintain accurate documentary records for submittal of all recycled materials used including fly ash and slag cement.

3.8 Occupancy Requirements for Buildings:

A. Existing Buildings:

1. Full Government Occupancy: Government will occupy buildings that will be under construction during the entire contract period. Cooperate with Government during construction operations to minimize conflicts and facilitate Government usage. Perform the Work so as not to interfere with Government's day-to-day operations. Maintain existing exits, unless otherwise indicated.

a. Maintain access to existing walkways, corridors, and other adjacent occupied or used facilities. Do not close or obstruct walkways, corridors, or other occupied or used facilities without written permission from the CO or COR.

b. Maintain existing building in a weather tight condition throughout construction period. Repair damage caused by construction operations. Protect building and its occupants during construction period.

B. New /Existing Buildings Unoccupied: N/A

3.9 Photo Documentation:

A. Contractor must provide existing condition, progress, and completion photos. All photos shall be in focus, show maximum range of depth of field general photo and then close up detail photo as needed. Shall be in JPEG digital form and submitted electronically by email or via CD-R Archival Gold or DVD-R Archive within 7 days from time of taken or as approved by

COR.

B. Existing Condition Images:

1. Before starting construction, take color, dated, digital images of project site and adjacent property/roads/etc. that may be impacted by construction activity/traffic. Include existing items to remain or be salvaged from different vantage points and with context for location identification.

C. Construction Progress Images:

1. Document all sub-surface work/ trenches etc. prior to backfill with photos covering enough overall field view to show location and then zoom in for details. Locations and dimensions shall also be noted on as built drawing set.

2. Maintain organized index for photos with date, description, etc.

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3. Additional images as needed when questions or emergency situations occur. Submit within 24 hours.

D. Completion Images:

1. Document all completed work within scope of work.

2. Maintain organized index for photos with date, description, etc.

3. Additional images as needed when questions or emergency situations occur. Submit within 24 hours.

3.10 Fire and Life Safety:

A. As a minimum, conduct one weekly 15 minute "toolbox" safety meetings. These meetings shall be conducted by a foreman or supervisor and attended by all construction personnel at the worksite. Topics need to coincide with work scheduled for the following week. Document and submit meeting minutes to the CO and COR within one day after the meeting and document the meetings on the daily reports.

B. Comply with the requirements of NFPA 241 (Standard for Safeguarding Construction, Alteration, and Demolition Operations). Take all necessary precautions to prevent fire during construction. Provide adequate ventilation during use of volatile or noxious substances.

C. Store and handle hazardous materials in accordance with manufacturers and OSHA 29CFR1926 Subpart D requirements 1926 | Occupational Safety and Health Administration (osha.gov). Maintain readily available, on site, MSDS/Safety Data Sheets (SDS) for each chemical.

1. Immediately report all spills of hazardous materials to the CO, COR, and park.

2. Maintain a spill emergency response kit.

3. Train employees how to respond to a spill and use the emergency response kit.

3.11 Noise and Acoustics Management: N/A

ITEM 4 - COMMENCEMENT, PROSECUTION, AND COMPLETION

4.1 The Contractor shall commence work in accordance with the terms and conditions of the contract.

Contractor shall coordinate and incorporate long lead and delivery time items within the schedule.

ITEM 5 - EXAMINATION OF THE SITE

5.1 All bidders are urged to visit the job site and examine existing conditions before submitting bids.

Contractors will be accountable for understanding existing conditions. No cost changes for items viewable during site visit will be allowed.

ITEM 6 - ABBREVIATIONS

6.1 The list of abbreviations, standards and organizations which may be used in/referred within the

Construction Specifications or Special Provisions, may be found linked from the listed page below. On the home page, follow the link under “Contracting and Procurement” labeled “NPS Reference Standards.” https://www.nps.gov/orgs/1671/do-business-with-us.htm https://www.osha.gov/laws-regs/regulations/standardnumber/1926 https://www.osha.gov/laws-regs/regulations/standardnumber/1926 https://www.nps.gov/orgs/1671/do-business-with-us.htm

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ITEM 7 - ACCIDENT PREVENTION

7.1 Description: The work of this section consists of establishing and implementing an effective accident prevention program (APP) and providing a safe environment for all personnel and visitors.

7.2 Submittals:

A. Accident Prevention (Safety) Plan (APP): Submit a site-specific accident prevention (safety) plan. The Plan shall be written to comply with OSHA and project requirements (a generic plan is not acceptable) including but not limited to the following:

1. Name and qualifications of responsible supervisor to carry out the program.

2. First aid and rescue procedures.

3. Training, both initial and continuing.

4. Outline of each phase of the work, the hazards associated with each major phase, and the methods proposed to provide for property protection and safety of the public, National Park Service personnel, and Contractor's employees. Identify the work included under each phase, with a Job Hazard Analysis (JHA)/Job Safety Analysis (JSA), etc. A sample JHA template may be provided upon request.

5. Planning for possible emergency situations such as cave-ins, gas explosions, electrocution, fires, and power outages. Such planning shall take into consideration the nature of construction, site conditions, and degree of exposure of persons and property.

6. Contractor to identify nearest location of medical facility for emergencies.

7. Recognition that works will be performed in remote areas with limited communication or cell phone coverage if applicable.

8. Supplemental hazard specific plans may be required IAW 29 CFR 1926 or 1910.

B. Meeting and Inspection Reports: Safety Meetings: As a minimum, conduct 15 minute

"toolbox" safety meetings. These meetings shall be conducted by a foreman and attended by all construction personnel at the worksite. Submit a report of safety meetings and inspections to CO and COR within one day after the meeting and document the meetings on the daily reports.

ITEM 8 - PRECONSTRUCTION CONFERENCE

8.1 If the Contracting Officer decides to conduct a preconstruction conference, the successful offeror will be notified and will be required to attend. The Contracting Officer’s notification will include specific details regarding the date, time, and location of the conference, any need for attendance by subcontractors, and information regarding the items to be discussed. See Item 9.1C below.

ITEM 9 - SUBMITTALS

9.1 General Contracting Submittal Procedures:

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A. General: Prepare and submit submittals required by individual Technical Specification Sections. Types of submittals are indicated in individual specific sections.

1. CM-16 Transmittal Form: All submittals shall be transmitted via electronic email using

National Park Service form CM-16 form. The form will be provided by the Contracting Officer. No action will be taken on a submittal item unless accompanied by the CM-16 transmittal form. Submit completed CM-16 forms to the CO and the COR.

B. Submittal List: Administrative required submittals are listed below in 9.1.C and does not include technical section submittal requirements included in each technical section.

C. Preconstruction Conference Submittal: Satisfactory evidence of liability insurance coverage and workman’s compensation, and any applicable bonds, must be submitted within 10 calendar days of Notice of Award. The following items shall be submitted a minimum of one week prior to the Preconstruction Conference. If all of these documents have not been received one week prior to the scheduled Pre-Construction Conference date, the conference will be cancelled, Notice to Proceed may not be issued, and the Contracting Officer will consider other contractual remedies. Work shall not commence until written Notice to Proceed has been issued. Contracting Officer will notify Contractor of tentative date for the Pre-Construction Conference:

1. Letter designating Project Superintendent.

2. Construction Schedule. Must include shop drawings, procurement time including long lead time items, mobilization, trade work progression and completion at minimum.

3. A comprehensive breakdown of the Schedule of Values.

4. Accident Prevention (Safety) Plan (see section 7 of this document).

5. A list of Subcontractors for this project.

6. Written statements from subcontractors certifying compliance with applicable labor laws.

7. Quality Control Plan.

9.2 Project Shop Drawings, Product Data, and Samples: Contracting Officer will provide sample cover sheet and a list of required submittals is included in each technical specification or attached at the end of this document.

A. Shop Drawings: Indicate all coordinating materials and work impacting the installation coordination, connection details, anchorage requirements, hardware locations, and installation details and locations.

1. Submit Shop Drawings according to Part 9.1 of this section to include one digital file (.PDF or .TIF) and two full size hardcopy documents to COR.

B. Product Data: Provide component construction and specification data sheets, anchorage requirements and any other product specific data.

1. Submit Product Data according to Part 9.1 of this section to include one digital file (.PDF or .TIF) to COR.

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C. Samples: Submit 2 color samples 4” x 6” minimum in size for all color and product selections.

Paint samples shall be actual paint finish drawdown for all project colors.

1. Submit Samples CM-16 Transmittal Form according to Part 9.1 of this section to include one digital file (.PDF or .TIF) and physical samples of actual material to COR.

D. For submittals specified above, forward submittals to Contracting Officer and COR at least 15 days before need for approval (depends on length of project).

E. After approving submittals, Contracting Officer and/or COR will return one copy to the

Contractor. If submittals are not approved, Contracting Officer will return all copies to Contractor with reasons for rejection. Resubmit, identifying changes. Any work done before approval shall be at Contractor's own risk.

9.3 Approved Equals: If an item in this solicitation is identified as “brand name or equal” or lists more than one manufacturer, the description of the proposed item must reflect the characteristics and level of quality that will satisfy the Government’s needs as demonstrated by the salient physical, functional, or performance characteristics that “equal” products must meet and/or exceed that as specified in the solicitation or relevant specification.

A. For each item proposed as an “approved equal,” submit supporting data, including:

1. Drawings and samples as appropriate.

2. Comparison of the characteristics of the proposed item with that specified and with the salient characteristics provided.

3. Changes required in other elements of the work because of the substitution.

4. Name, address, and telephone number of vendor.

5. Manufacturer’s literature regarding installation, operation, and maintenance, including schematics for electrical and hydraulic systems, lubrication requirements, and parts lists.

Describe availability of maintenance service, and state source of replacement materials.

B. A request for approval constitutes a representation that Contractor:

1. Has investigated the proposed item and determined that it is equal or superior in all respects to that specified.

2. Will provide the same warranties for the proposed item as for the item specified.

3. Has determined that the proposed item is compatible with interfacing items.

4. Will coordinate the installation of an approved item and make all changes required in other elements of the work because of the substitution.

5. Waives all claims for additional expenses that may be incurred as a result of the substitution.

C. Approved Equals will be evaluated and approved/disapproved during the submittal process.

9.4 Schedule of Values: Submit the Schedule of Values a minimum of one week prior to the

Preconstruction Conference for COR review. Schedule of Values shall include defined work line items with cost break downs including labor, material, and equipment for COR approval.

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9.5 Progress Reporting: The initial Construction Schedule and Schedule of Values are required a minimum of one week prior to the Preconstruction Conference. After the Notice to Proceed is issued and after on-site work begins, progress will be documented via daily logs and by providing an updated Construction Schedule and Schedule of Values when requested, but minimally with each pay application. Submit digital copy electronically (PDF preferred) of all required documents.

Construction Schedules are normally in bar chart form and indicate estimated starting and completion dates for each part of the work. For a pay application to be reviewed and processed in a timely manner, the following information must either be submitted prior to or accompany submission of the pay application:

A. Daily/weekly progress reports during construction as part of the administration process.

B. Updated Schedule of Values: Break down each lump-sum item into component work activities used in the schedule, for which progress payments may be requested. The Schedule of Values will form the basis for payment. The work activities broken out within the schedule of values shall be integrated into and made a logical part of the construction baseline schedule submitted under this specification. The total costs for the component work activities shall equal the contract price for that lump-sum item. The Contracting Officer may request data to verify accuracy of dollar values. A sample Schedule of Values format may be provided upon request.

ITEM 10 – TEMPORARY SERVICES

10.1 It is the Contractor’s responsibility to provide temporary services, equipment, tools, and skilled labor as required for the chosen means and methods to perform the work in accomplishing this Contract.

ITEM 11 - PROJECT CLOSEOUT

11.1 Description: The work of this section consists of final cleanup, closeout submittals, final inspection procedures working toward Final Acceptance.

11.2 Cleaning: Remove all tools, equipment, surplus materials, and rubbish. Move attic stock to location coordinated with COR. At time of final inspection, project shall be thoroughly clean and ready for intended use. Inspector holds the right to reschedule if project is not ready for inspection.

11.3 Completion and Final Inspection: Contractor shall submit written certification of project completion and request a final inspection to the Contracting Officer and COR. The Contracting Officer or designee will make an inspection within 10 days of receipt of request or at a mutually agreeable time.

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A. If the work is determined to be complete following the final inspection with minor comments, the COR will prepare and provide the Contractor a Punch List noting outstanding items to be addressed.

B. If the work is not determined to be complete following the final inspection, the Contracting Officer will notify Contractor in writing, stating reasons. Contractor, after completing the work according to the Contract Documents, shall resubmit completion and request a new final inspection. Re-inspection costs may be charged against the Contractor in accordance with the Inspection of Construction contract clause.

C. Contractor shall complete the Punch List within 30 calendar days, or a time directed by the

CO.

D. Once Contractor completes all items of work on the Punch List and all contractually required items are accepted, Contracting Officer will issue Letter of Final Acceptance of Work and request the final pay application.

E. If the Contractor fails to complete the work within the time frame, the Contracting Officer may correct the work with an appropriate reduction in contract price or charge for re-inspection costs in accordance with the Inspection of Construction contract clause.

F. Disposition of any permits and warranties required by the specifications in this section.

11.4 Final Acceptance of the Work: After all punch list deficiencies have been corrected, a Letter of

Final Acceptance will be issued. A Release of Claims document must be executed and submitted to the Contracting Officer before final payment can occur.

11.5 Warranties:

A. Construction Warranty shall be based on date of final acceptance of the work and remain in effect for one year.

B. Provide all manufacturer warranty information of products installed organized by Division. All contact information, extent of coverage and conditions shall be clearly noted as well as date of overall final acceptance.

C. Information shall include operation and maintenance manuals for each warranted product.

PART 2 – PRODUCTS (NOT USED)

PART 3 – EXCUTION (NOT USED)

END OF SECTION

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SECTION 01 11 00A

PHOTOS

Item 1 - Photos of sites with proposed gas line marked.

A. Overhead Map of Sleeping Bear Dunes National Lakeshore

B. Maintenance Complex Overhead View

C. MAINROC Natural Resources Office Building

D. Carpenter Shop

E. Maintenance Office Building

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MAINTENANCE COMPLEX OVERHEAD

Shop

Office

Mainroc

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MAINROC OFFICE COMPLEX

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CARPENTER SHOP

S T A G E

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MAINTENANCE OFFICE COMPLEX

S T A G E

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SECTION 03 20 00

CONCRETE REINFORCEMENT

1.1 RELATED WORK SPECIFIED

Cast-In-Place Concrete Section 03 30 00

1.2 CERTIFICATES

A. Upon request, submit mill test certificates of supplied concrete reinforcing, indicating physical and chemical analysis.

PART 2 – PRODUCTS

2.1 MATERIALS

A. Reinforcing bars shall meet the requirements of Standard Specification for Deformed Billet- Steel Bars for Concrete Reinforcement, ASTM A 615. Reinforcing shall be Grade 60.

B. Stirrup steel shall conform to ANSI/ASTM A 82.

C. Welded wire fabric shall be uncoated and shall meet the requirements of the Standard Specifications for Welded Wire Fabric for Concrete Reinforcement, ASTM A 185, or Standard Specifications for Welded Deformed Steel Wire Fabric for Concrete Reinforced Construction, ASTM A 497.

D. Chairs, bolsters, bar supports, and spacers shall be sized and shaped for strength and support of reinforcement during installation and placement of concrete. Use noncorrosive supports to prevent surface staining where supports are in contact with an exposed concrete surface.

E. Tie wire shall be minimum 16-gauge annealed type.

F. Concrete pad shall be 3000 PSI compression strength concrete mix and a thickness of 6”.

PART 3 – EXECUTION

3.1 SOIL COMPACTION

A. Concrete pad is to be poured on a minimum 6” of compacted sandy gravel and/or gravel rated for a load bearing pressure of 3000 PSI.

3.2 PLACING REINFORCEMENT

A. Before placing concrete, clean reinforcement of foreign particles or coatings.

B. Place reinforcement bars accurately and secure them adequately on a 12” grid to resist displacement.

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C. Place fabric reinforcing and lap fabric at least 1 1/2 meshes plus end extension of wires but not less than 12 inches in structural slabs. Lap at least 1/2 mesh plus end extension of wires but not less than 6 inches in slabs-on-grade, unless shown otherwise on the Drawings.

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SECTION 03 30 00

CAST-IN-PLACE CONCRETE

1.1 RELATED WORK SPECIFIED ELSEWHERE

Testing Laboratory Services Section 01 40 00 Reinforcing Section 03 20 00 Joint Sealers Section 07 92 00

1.2 CONCRETE QUALITY AND WORKMANSHIP

A. ACI 318, American Concrete Institute “Building Code Requirements for Structural Concrete”, shall be the minimum design and construction standards. Concrete work shall conform to all requirements of ACI 301, "Specifications for Structural Concrete ", except as hereinafter modified or supplemented. The Contractor shall keep at least one copy of ACI 301 in the field office at all times.

1.3 REFERENCES

A. Codes and Standards: Comply with provisions of following codes, specifications and standards, except where more stringent requirements are shown or specified:

1. American Society for Testing and Materials (ASTM):

a. C 33 – Standard Specification for Concrete Aggregates

b. C 94 – Standard Specification for Ready-Mixed Concrete

c. C 143 – Standard Test Method for Slump of Hydraulic-Cement Concrete

d. C 150 – Standard Specification for Portland Cement

e. C 173 – Standard Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method

f. C 231 – Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

g. C 494 – Standard Specification for Chemical Admixtures for Concrete

h. C 618 – Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete

i. C 989 – Standard Specification for Slag Cement for Use in Concrete and Mortars

j. C 1240 – Standard Specification for Silica Fume Used in Cementitious Mixtures

2. DIN (Deutsches Institut Fur Normung, Germany):

a. DIN 1048 Part 5 “Testing Concrete - Testing of hardened concrete (specimens prepared in mould)”

3. NSF International (NSF):

a. NSF/ANSI Standard 61 - Drinking Water System Components

1.4 TESTING SERVICE

A. A qualified Testing Laboratory Service shall perform installation evaluation tests/inspections on the work of this Section. See testing requirements described at the end of this Section, and see Section 01 40 00 for additional information.

1.5 SUBMITTALS

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A. Submit the following for each mix to be provided in accordance with Section 01 33 00:

Source of each aggregate Aggregate gradation Pounds of aggregate per cubic yard Pounds of water per pound of cement Slump in inches Percent air content Type and quantity of admixtures used Compressive strength Mix designs (ACI 318)

B. Provide batch ticket for each batch discharged and used in work, indicating project identification name and number, date, mix type, mix time, quantity, and amount of water introduced.

C. Make no alterations in materials without approval.

1.6 ENVIRONMENTAL REQUIREMENTS

A. Cold weather requirements shall conform to ACI 306.1, Standard Specification for Cold Weather Concreting, and as follows:

1. When average high and low temperature is expected to fall below 40 deg. F for three successive days, maintain delivered concrete mixture temperature within the temperature range required by ACI 301.

2. Do not use frozen materials or materials containing ice or snow. Do not place concrete on frozen subgrade or on subgrade containing frozen materials.

3. Do not use calcium chloride, salt, or other materials containing antifreeze agents or chemical accelerators unless otherwise specified and approved in mixture designs.

B. Hot weather requirements shall conform to ACI 305.1, Specification for Hot Weather Concreting, and as follows:

1. Maintain concrete temperature below 90 deg. F at time of placement. Chilled mixing water or chopped ice may be used to control temperature, provided water equivalent of ice is calculated to total amount of mixing water. Using liquid nitrogen to cool concrete is Contractor’s option.

2. Fog-spray forms, steel reinforcement, and subgrade just before placing concrete. Keep subgrade uniformly moist without standing water, soft spots, or dry areas.

2.1 CONCRETE MATERIALS

A. Portland cement shall conform to ASTM C 150, Type I. Color shall be standard gray color.

B. Supplementary cementitious materials shall be as follows:

1. Fly Ash shall conform to ASTM C 618, Class C or F.

2. Silica Fume shall conform to ASTM C 1240. Product shall be:

a. MasterLife SF 100 Series by Master Builders Solutions.

b. Approved equal.

3. Metakaolin shall conform to ASTM C 618, Class N. Product shall be:

a. MasterLife MK 828 by Master Builders Solutions.

b. Approved equal.

4. Slag Cement shall conform to ASTM C 989, Grade 100 or 120.

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C. Normal weight aggregates shall conform to ASTM C 33, except that the gradation shall be altered to use sand-gravel as the fine aggregate and limestone as the coarse aggregate for all concrete other than that used for footings. All concrete shall contain 30% limestone by weight of the total aggregate, except at topping mixes or as otherwise noted.

D. The term “large aggregates”, as used in the paragraph below “Proportioning and Design of Mixes” is defined as 1” – 1 ¼” size.

E. Water shall conform to ASTM C 1602, and shall be potable, clean and not detrimental to concrete.

F. Admixtures:

1. Air-entraining admixture shall conform to ASTM C 260. Product shall be MasterAir Series by Master Builders Solutions or approved equal.

2. Use water-reducing admixture in all concrete, which shall conform to ASTM C 494.

Products shall be:

a. Type A, Water-Reducing: MasterPozzolith Series or MasterPolyheed Series by Master Builders Solutions, or approved equal.

b. Type B, Retarding: MasterSet R Series or MasterSet DELVO Series by Master Builders Solutions, or approved equal.

c. Type C, Accelerating: MasterSet AC 534 or MasterSet FP20 by Master Builders Solutions, or approved equal.

d. Type D, Water-Reducing and Retarding: MasterSet R Series or MasterSet DELVO Series by Master Builders Solutions, or approved equal.

e. Type E, Water-Reducing and Accelerating: MasterSet FP 20 by Master Builders Solutions, or approved equal.

f. Type F, High-Range Water-Reducing; MasterRheobuild 1000 or MasterGlenium Series by Master Builders Solutions, or approved equal.

3. Workability-Retaining Admixture:

a. Shall retain concrete workability without affecting time of setting or early-age strength development.

b. Shall conform to ASTM C 494, Type S

c. Product shall be: MasterSure Z 60 by Master Builders Solutions or approved equal.

4. Permeability-Reducing Admixture:

a. Shall be an integral crystalline capillary waterproofing admixture for concrete.

b. Shall satisfy the following requirements, when used at the manufacturer’s recommended dosage:

i. Reduction in capillary absorption: Not less than 40 percent relative to a companion untreated concrete mixture, when tested in accordance with

ASTM C 1585.

ii. Reduction in water penetration: Not less than 40 percent relative to a companion untreated concrete mixture, when tested in accordance with

DIN 1048.

iii. The admixture shall not affect the setting time, strength or durability properties of concrete.

c. Shall be certified NSF/ANSI 61.

d. Product shall be: MasterLife 300 Series by Master Builders Solutions or approved equal.

5. Corrosion-Inhibiting Admixture:

a. Shall be a nominal 30 percent solution of calcium nitrite or an amine/ester-based organic corrosion-inhibiting admixture.

b. Product shall be: MasterLife CI 30 or MasterLife CI 222 by Master Builders Solutions or approved equal.

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6. Other specific performance admixtures if used, shall conform to ASTM C 494, Type S.

7. Do not use calcium chloride, salt and other materials containing anti-freeze agents or chemical accelerators. Do not use admixtures containing intentionally-added chlorides.

2.2 CURING COMPOUNDS

A. Subject to compliance, product shall be:

1. MasterKure CC 180 WB by Master Builders Solutions

2. Surfaseal by L&M Construction Chemicals, Inc.

3. Acryseal by Protex Industries, Inc.

4. CS-309 by W.R. Meadows, Inc.

5. Acrylic Curing Compound by Nebraska Builders Products

6. Approved equal

2.3 VAPOR RETARTER

A. Vapor retarder on grade beneath concrete slabs and at other locations noted on the Drawings, shall meet ASTM E1745 Class C, and shall be 10.0 mils thick with vapor permeability of 0.04 perms or less per ASTM F1249 and a minimum tensile strength of 49 lbf/in per ASTM D882.

Product shall be:

1. Stego Wrap 10-mil Class C Vapor Retarder

2. Approved equal

B. Pressure-sensitive tape for vapor retarder shall be tape, manufactured by the vapor retarder manufacturer specifically for use with the specified vapor retarder.

2.4 PROPORTIONING AND DESIGN OF MIXES

A. For structural stoops and retaining walls, provide 4,000 PSI, 28-day compressive strength concrete, with 611 lbs. cement per cu. yd. minimum, a W/C ratio of 0.42 maximum, and a minimum of 2,000 pounds per cubic yard of large aggregate, as defined in paragraph “Concrete Masterials” above. For footings, concrete fill on metal deck, interior slabs-on-grade and all other structural concrete, provide 4,000 psi, 28-day compressive strength concrete, with 564 pounds cement per cubic yard minimum, a W/C ratio of 0.45 maximum, and a minimum of 2,000 pounds per cubic yard of large aggregate, as defined in paragraph “Concrete Materials” above. Air entrainment of 6% +/- 1% shall be used for all concrete, except for interior slabs which are to be power-troweled, which shall not have air entrainment.

B. Design adjustment may be requested by Contractor when characteristics of materials, job conditions, weather, test results, or other circumstances warrant; at no additional cost to the NPS and as accepted by the Contracting Officer. Laboratory test data for revised mix design and strength results must be submitted to and accepted by the Contracting Officer before using in work.

C. Proportion and design mixes to result in concrete slump at point of placement of not less than 1" and not more than 4". Slump shall not exceed 9” when high-range water-reducing admixtures are used.

2.5 CONCRETE PRODUCTION

A. Produce and deliver ready-mixed concrete in accordance with ASTM C 94. Elapsed time of more than one hour between mixing and placing will be considered as a basis for rejection of the load.

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B. Mix materials for concrete in appropriate drum type batch machine mixer. For mixers of one cubic yard or smaller capacity, continue mixing at least 1 1/2 minutes, but not more than 5 minutes after ingredients are in mixer, before any part of batch is released. For mixers of capacity larger than one cubic yard, increase minimum 1 1/2 minutes of mixing time by 15 seconds for each additional cubic yard, or fraction thereof.

C. For ready-mix concrete, comply with requirements of ASTM C 94, and as herein specified.

Delete references for allowing additional water to be added to batch for material with insufficient slump. Addition of water to the batch will not be permitted.

D. When air temperature is between 85 deg. F and 90 deg. F, reduce mixing and delivery time from 90 minutes to 75 minutes, and when air temperature is above 90 deg. F, reduce mixing and delivery time to 60 minutes.

PART 3 – EXECUTION

3.1 PREPARATION

A. Clean equipment for mixing and transporting concrete. Forms shall be thoroughly wetted (except in freezing weather) or oiled. Clean reinforcement of ice, dirt, rust, scale, or other coatings. Remove debris, water, and ice from the place of deposit of concrete. Remove laitance and other unsound material from hardened concrete before additional concrete is added.

B. Schedule delivery of concrete to assure prompt discharge upon truck arrival to site.

C. Prepare previously-placed concrete by cleaning with steel brush and applying bonding agent.

Apply bonding agent in accordance with manufacturer’s instructions.

3.2 INSTALLATION OF VAPOR RETARDER ON GRADE BENEATH CONCRETE SLABS

A. To prepare, level and tamp granular fill.

B. Apply with 96" width parallel direction of pour. Exercise care to avoid punctures. Lap joints 6" and seal with adhesive. Use pressure-sensitive tape or vapor retarder material with adhesive to seal punctures, tears, and penetrations through the retarder.

3.3 INSTALLATION OF EMBEDDED ITEMS

A. Set and build into work anchorage devices and other embedded items required for other work that is attached to or supported by cast-in-place concrete. Set edge forms or bulkheads and intermediate screed strips for slabs to obtain required elevations of slab surfaces.

3.4 CONVEYING AND PLACING

A. Convey concrete from trucks to the place of final deposit by methods that will prevent separation or loss of materials. Equipment for chuting, pumping, and pneumatically conveying concrete shall be of such size and design as to ensure a practically continuous flow of concrete at the delivery end without separation of materials. Place concrete in accordance with ACI 301.

Pump concrete in accordance with ACI 304.

B. Maintain concrete cover around reinforcing as follows (unless indicated otherwise on the Drawings): Item Coverage Walls (exposed to weather or backfill) 1 ½” Footings and Concrete (formed against earth) 3”

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Slabs on Fill 2”

C. Deposit concrete as nearly as practicable in its final position to avoid segregation due to re-handling or flowing. Place concrete at a rate so that concrete is plastic and flows readily into the spaces between the bars. Concrete that has been contaminated by foreign material shall not be used. When placing is once started, it shall be carried on as a continuous operation until placement of the panel or section is completed. Bring surfaces to correct level with straightedge and strike off. Use bull floats or darbies to smooth surface, free of humps or hollows. Do not disturb slab surfaces prior to beginning finishing operations.

D. At all doors that shall be used as a means of egress, the elevation of the floor surfaces on each side of the doorways shall not vary by more than ½”. The elevation of the floor surfaces shall be maintained on both sides of the doorway for a distance not less than the width of the wildest door leaf.

3.5 CONSOLIDATION

A. Consolidate concrete in accordance with ACI 309.

3.6 FINISHING

A. Slab finish shall be in accordance with ACI 301, Chapter 5. Troweled finish as described below shall be used unless otherwise noted: After floating, begin first trowel finish operation using a power-driven trowel. Begin final troweling when surface produces a ringing sound as trowel is moved over the surface. Consolidate concrete surface by final hand-troweling operation, free of trowel marks, uniform in texture and appearance, and with a surface plane tolerance not exceeding 1/4" in 10' when tested with a 10' straightedge. Final surface finish shall be a light broom finish.

B. Repair or replace other work damaged by finishing operations, as directed by Contracting

3.7 JOINTS IN CONCRETE FLATWORK

A. Install isolation joints at all joints where concrete flatwork comes in contact with vertical surfaces such as walls, column pads and structural stoops unless shown otherwise on the Drawings. Provide joint filler at all isolation joints as follows:

1. Joint filler and sealant at all exterior joints, at interior joints which are exposed without additional finish unless shown otherwise on the Drawings, at joints between structural stoops and building walls or slabs, at all junctures of all exposed columns, and other locations shown on the Drawings.

2. Joint filler only (no sealant) at all interior flatwork junctures that are concealed by additional finish except as described above.

B. Install joint filler and sealants in accordance with the manufacturer's recommendations and as specified for expansion joints below.

C. Cut sawed control joints 1/8" wide x 1/4 slab depth at interior slab locations shown on the Drawings. Saw control joints after concrete has cured enough to prevent aggregates from being dislodged by the saw but before shrinkage stresses become sufficient to provide cracking.

D. Install expansion joints at all locations shown on the Drawings. Expansion joint filler shall extend through the full thickness of the slab, except that where sealant is specified to be applied over expansion joint filler, set top edge of filler strip below finished surface and cover with

Page | 29 temporary wood filler strip spaced to provide proper depth for sealant as required by the sealant manufacturer's printed instructions.