Specifications - Morgantown Roof Replacement - Attachment 1.pdf

MONONGAHELA RIVER LOCKS AND DAMS

SCOPE OF WORK AND SPECIFICATIONS

MORGANTOWN LOCK AND DAM ROOF

1. GENERAL REQUIREMENTS

1.1 GENERAL

The work is located at 26 Morgantown Lock Road, Morgantown, WV 26501-2329. The Operations building roof is over 30 years old and has been patched. This roof is currently leaking in several locations. The Operations building roof is essentially five sections with approximately 2300 square feet. The site of the work may be reached from state and local roads and streets. The general description of the work pertains to the following building:

1) Operations Building – Remove the existing roofing materials, insulation, roof drain covers, and gravel from the roof sections. These sections are marked on the Morgantown Reference Drawings, 037-LMO-70/11A.1. Section 1 does not have a parapet, and is approximately 30 feet by 20 feet, or 600 square feet, and is edged with 24 gauge textured galvanized steel fascia. Section 1 has 2 roof drains. Sections 2-4 have a high parapet, where the existing membrane is run up the side and covered with flashing on the tops of the parapets. This shall be replaced in kind. Section 2 is approximately 37 feet by 20 feet and its parapet has 24 gauge galvanized steel coping.

Section 2 has 2 roof drains and a 4 inch vent. Section 3 is approximately 9.3 feet by 20 feet and its parapet has 24 gauge galvanized steel coping. Section 3 has 1 drain.

Section 4 is approximately 22.7 feet by 19.3 feet and its parapet has 24 gauge galvanized steel coping. Section 5 is approximately 13.3 feet by 27.3 feet with one end rounded. Section 5 does not have a parapet, and is edged with 24 gauge textured galvanized steel fascia, which shall be replaced in kind. Install a new, fully adhered, 90 mil EPDM roofing system to each section, conforming to ASTM D4637/D4637M.

The roofing system shall have new tapered insulation with R-Value of at least 20.5 and include the addition of any saddles, crickets, curbs, or other features to ensure positive drainage to the roof drains. New flashing shall be installed on remaining protrusions and the parapet. Replace the drains and install new roof drain covers. The interior drains lines will be partially replaced from the roof down one (1) foot.

1.2 MEASUREMENT AND PAYMENT

Payment shall include all costs of labor, materials, supplies, equipment, supervision, cleanup, and other costs of completing the work as specified to remove and dispose of the existing roofing materials, insulation, drain covers, conductor heads and install a new roofing system, insulation, drain covers, and all other miscellaneous components. All material provided in the performance of this contract shall be new and meet the requirements of the specifications.

1.3 PROTECTION OF PERSONNEL

The Contractor shall insure that adequate measures are in place to protect workers, facility operation personnel and the public from injury due to the operations being performed. All protective measures shall be in accordance with EM 385-1-1.

1.4 SAFETY

In addition to the detailed requirements included in the provisions of this contract, all work shall comply with the most recent edition of the USACE Engineering Manual (EM) 385-1-1, “Safety and Health Requirements Manual”, and all applicable federal, state, and local laws, ordinances, criteria, rules, and regulations. If there are any standards that require interpretation, submit matters to the appropriate administrative agency for resolution before the commencement of work. Where the requirements herein, applicable laws, criteria, ordinances, regulations, and referenced documents vary, the most stringent requirements govern.

http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_3 85-1-1.pdf

The contractor shall complete and submit the Accident Prevention Plan.

• Safety Shoes – All employees engaged in construction operations shall wear safety shoes meeting the requirements of EM 385-1-1, Section 05.E.

• Protective Eyewear – All workers on the site shall wear, as a minimum, protective eyewear meeting the requirements of EM 385-1-1, Section 05.A. Additional eye protection may be required in accordance with the requirements of EM 385-1-1, Section 05.B.

• Hearing Protection – Hearing protection shall be provided for workers in accordance with EM 385-1-1, Section 05.C.

• Head Protection – Head protection shall be provided for workers in accordance with EM 385-1-1, Section 05.D.

• Personal Fall Protection – Fall protection shall be provided for workers in accordance with EM 385-1-1, Section 05.H.

• Personal Floatation Devices (PFDs) – PFDs shall always be worn when working above or near water in which other fall protection methods do not provide the appropriate protection

• Masks – in accordance with (IAW) SEC DEF Memorandum dated Feb 4, 2021 Use of Masks and Other Public Health Measures, all individuals on military installations, as defined, and all individuals performing official duties on behalf of the Department from any location other than the individual’s home, including outdoor shared spaces will wear masks IAW the most current CDC guidelines.

All overhead utility lines shall be identified and protected from the Contractor’s operations. The Contractor shall address in the accident prevention plan, specific measures for working around overhead utility lines.

http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_385-1-1.pdf http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_385-1-1.pdf

1.5 KEY PERSONNEL

1.5.1 Superintendent

Provide project superintendent with a minimum of 5 years’ experience in construction with at least 5 of those years as a superintendent on EPDM projects similar in size and complexity. The individual must be familiar with the requirements of EM 385-1- 1 and have experience in the areas of hazard identification and safety compliance.

The individual must be capable of interpreting a critical path schedule and construction drawings. The Contracting Officer may request proof of the superintendent's qualifications at any point in the project if the performance of the superintendent is in question.

1.5.2 Quality Control System Manager (QCSM)

The QCSM is required to be a graduate engineer, graduate architect, or a graduate of construction management, or a construction person with a minimum of 5 years’ construction experience on EPDM roof installations similar to the tasks in this Contract. This QCSM is to always be onsite during construction and to be employed by the prime Contractor. If qualified, the QCSM may serve as the Site Safety and Health Officer (SSHO), but may not serve as the Superintendent.

1.5.3 Site Safety and Health Officer (SSHO)

The Contractor shall employ a minimum of one Competent Person at each project site to function as the primary Site Safety and Health Officer (SSHO) to implement and administer the Contractor’s safety program and the Government-accepted Accident Prevention Plan (APP). The SSHO is a full-time responsibility and shall be an employee other than the superintendent, that reports directly to a senior project, or corporate, official. The SSHO shall be present at the project site and be located so they have full mobility and reasonable access to all major work operations during the shift. The SSHO shall meet all training and experience qualifications as outlined in EM 385-1-1 Section 01, Paragraph A.17. The SSHO may also serve as the Quality Control System Manager (QCSM), but the SSHO may not serve as the Superintendent.

SSHOs shall attend the pre-construction conference, pre-work meetings, including preparatory and periodic in-progress meetings.

1.6 PROJECT SUBMITTALS.

The contractor shall provide submittals for Government Approval. The Government reserves the right to require the Contractor to resubmit any item found not to comply with the contract. This does not relieve the Contractor from the obligation to furnish material conforming to the plans and specifications. It will not prevent the Contracting Officer from requiring removal and replacement of nonconforming material incorporated in the work.

1.6.1 Manufacturer’s Product Literature

Product data shall include catalog cuts, specifications or other descriptive data for materials proposed for use, including copies of Manufacturer’s warranties and required warranty maintenance. All appropriate descriptive data shall be clearly indicated on the submittal. For evaluation purposes, the bidder shall submit for approval:

• Manufacturer’s product literature for the fall protection hardware/system

• Manufacturer’s product literature for the roof membrane,

• Manufacturer’s product literature for the insulation,

• Manufacturer’s product literature for the adhesives,

• Manufacturer’s product literature for the roof edging and

• Manufacturer’s product literature for accessories.

1.6.2 Manufacturer’s Certificate

Submit certificate from the roof system manufacturer attesting that the installer has the proper qualifications for installing tapered roof systems. Installer must possess a minimum of five (5) years’ experience with similar projects, unless otherwise approved by the Contracting Officer.

1.6.3 Roof Plan

Submit a Roof Plan that displays the layout of insulation and how it will be tapered to ensure positive drainage, to include the locations of any crickets, saddles, cants, curbs, etc. Additionally, provide manufacturer recommendations for fastener attachment patterns of insulation at the field, perimeter, and corners of the roof.

Provide manufacture’s details on flashing adjacent to Dryvit. Provide manufacture’s details on flashing around wall perimeter, roof, and around any penetrations.

1.6.4 Fall Protection Plan

The Government is required to have a fall protection system in place to protect personnel during light maintenance and inspections. The contractor shall be required to install permanent roof fall protection anchors for use as part of a personal fall arrest system that permits access to the entire roof for 2 people. The anchors shall be installed to meet or exceed the requirements of EM 385-1-1, OSHA 1910, OSHA 1926 Subpart M, ANSI Z359, and ANSI A10.32. Where the requirements of these standards differ, the most stringent shall be followed. The anchors shall be made of stainless steel or other corrosion resistant materials designed to be installed permanently without damaging the roofing system. The contractor shall submit a Fall Protection Plan that includes product data on the proposed anchors, as well as layout and installation details for review and approval prior to installation.

1.6.5 Inspection Reports

Inspection Report. Once the roof is bare, the Contractor shall provide an Inspection Report. This Inspection Report shall give the condition of the roof and any recommendations of the Contractor.

1.6.6 Qualifications of Installer

System installer shall be approved, authorized, or licensed in writing by the system manufacturer and shall have at least the minimum five (5) years’ experience required by the manufacturer as an approved, authorized, or licensed installer with that manufacturer and be approved at a level capable of providing the specified warranty.

Contractor shall provide documentation of manufacturer’s certification requirements with own credentials.

1.6.7 Credentials of Designated Persons & Contractor

Provide credentials for the following personnel: SSHO, Fall Protection.

Provide a copy of the Manufacture’s Certificate.

1.6.8 Accident Prevention Plan (APP)

An abbreviated APP shall address:

• Lead Compliance Plan

• Infectious Disease Exposure Prevention, Preparedness, and Response Plan

The APP shall include an Infectious Disease Exposure Prevention, Preparedness, and Response Plan. The plan shall describe how the Contractor will implement the requirements and best practices issued by Federal, State, and Local authorities to prevent the spread of COVID and/or other infectious diseases.

1.6.9 Project Schedule

Project Schedule must be provided in MS Project or Excel formats. Schedule must be submitted 2 weeks after Notice to Proceed (NTP), at least 2 weeks prior to the proposed start date, and updated at least weekly.

1.6.10 Resident Management System (RMS)

The Contractor and Government shall use the Resident Management System (RMS) to assist in monitoring and administration of this contract.

The Contractor’s roles as well as software details for the RMS system are outlined in the attachment titled “Attachment - Resident Management System Requirements”

1.6.11 Quality Control Plan

The contractor shall complete and submit a Quality Control Plan. The quality control system shall consist of plans, procedures, and organization necessary to produce an end product which complies with the contract requirements. Cover all construction operations, both onsite and offsite, and be keyed to the proposed construction sequence. The Contracting Officer reserves the right to conduct any inspections or perform any tests deemed necessary at any time during the execution of the contract to determine conformance with the requirements of theses specifications.

Superintendent and QC shall be on site at all times work is being done.

1.7 WARRANTY

Submit sample certificates for approval.

1.7.1 Roof Membrane Manufacturer Warranty

Furnish roof membrane manufacturer's twenty (20) year, no dollar limit, full roof system materials and installation workmanship warranty, including all flashing, insulation, and accessory materials necessary to construct a complete, watertight roof system. Provide warranty directly to the Government and commence warranty effective date and time of Government's acceptance of the roof work. The warranty shall state that:

1) If within the warranty period the roof system, as installed for its intended use in the normal climatic and environmental conditions of the facility, becomes non-watertight, shows evidence of moisture intrusion within the assembly, splits, tears, cracks, delaminates, separates at the seams, or shows evidence of excessive weathering due to defective materials or installation workmanship, the repair or replacement of the defective and damaged materials of the roof system assembly and correction of defective workmanship shall be the responsibility of the roof membrane manufacturer. All costs associated with the repair or replacement work shall be the responsibility of the roof membrane manufacturer.

2) When the manufacturer and his approved applicator fail to perform the repairs within seventy-two (72) hours of notification, emergency temporary repairs performed by others shall not void the warranty.

1.7.2 Roofing System Installer Warranty

The roof system installer shall warrant for a minimum period of two (2) years that the roof system, as installed, is free from defects in installation workmanship, to include the roof membrane, flashing, insulation, accessories, all attachments, and sheet metal installation integral to a complete watertight roof system assembly. Write the warranty directly to the Government. The roof system installer is responsible for correction of defective workmanship and replacement of damaged or affected materials. The roof system installer is responsible for all costs associated with the repair or replacement work.

1.8 PROJECT/SITE CONDITIONS

1.8.1 Reference Drawings

Attached Reference Drawings showing existing conditions to the best knowledge of the Government. Unless otherwise noted, dimension, elevations, and other features shown on contract drawings, are generally based on the reference drawings supplemented by field surveys. The Government cannot guarantee the accuracy of the dimensions, elevations, and features shown on reference drawings or on contract drawings which are based on the reference drawings, and it shall be the responsibility of the Contractor, whenever necessary, to verify all elevations and the dimensions by measurements in the field. All elevations are referenced to the local datum used for the original construction of the structure. The Contractor shall verify elevations and dimensions before laying out the work. The Contracting Officer shall be notified of any discrepancies prior to commencing work.

1.8.2 Verification of Field Conditions

The Contractor shall verify all dimensions and conditions in the field and shall advise the Contracting Officer of any discrepancy before performing any work.

1.8.3 Work Areas

The Contractor shall be fully responsible for determining the methods used to transport materials and equipment to and from the areas as well as the removal of waste materials from such spaces. The Contractor shall ensure that his operations will not interfere with the operation of the project or the duties of project personnel.

Transport of materials and equipment shall be the responsibility of the Contractor.

1.8.4 Time of Performance

The Contractor shall confine all operations at the work site between the hours of 7:30 AM and 4:00 PM, Monday through Friday, unless otherwise approved. Work will not be permitted on weekends or Federal holidays unless otherwise approved.

Federal Holidays include: New Year's Day, Birthday of Martin Luther King, Jr., Washington's Birthday, Memorial Day, Independence Day, Labor Day, Columbus Day, Veteran's Day, Thanksgiving Day, and Christmas Day.

1.8.5 Period of Performance (PoP)

The Contractor shall complete all work before November 15, 2021 or within 180 days, whichever occurs first.

1.9 PROTECTION OF GOVERNMENT PROPERTY

The contractor shall protect all government property during the performance of this contract. All damage to existing government property as a result of the contractor’s work shall be repaired or replaced to the satisfaction of the Contracting Officer. Exposed roof and building interior shall be protected at all times. At areas where existing roofing materials have been removed, the contractor shall install and maintain temporary protection from the weather until permanent installation of roofing materials can be made. The Contractor shall coordinate roof demolition with the Contracting Officer.

Work area shall be cleaned by the contractor after construction is complete.

1.10 INSPECTIONS AND ACCEPTANCE OF WORK

Notwithstanding other provisions of this contract, all materials and work to be performed under this contract shall be inspected and accepted by the Contracting Officer. The Contracting Officer shall be the individuals solely authorized to reject materials, disapprove or approve any work in progress, or order or direct any revision or change to the plans and specifications as presently shown and stated.

1.11 DISPOSAL

All materials removed in the performance of this contract and not reused shall become the property of the contractor and be disposed of offsite in accordance with Federal, State and Local regulations.

1.12 POINTS OF CONTACT

Prior to commencement of any work being performed on site, the contractor shall participate in a Pre-work Meeting with the Administrative Contacting Officer (ACO) and the Lockmaster on-site.

• Upper Monongahela Locks and Dams Lockmaster – Mike Clark, 724-421-5861, Michael.A.Clark2@usace.army.mil

• Administrative Contracting Officer (ACO) – Denise Polizzano, 412-395-7680, Denise.M.Ploizzano@usace.army.mil

1.13 SECURITY REQUIREMENTS

1.13.1 Access and General Protection and Security Policy and Procedures

The contractor and all associated subcontractors' employees shall comply with applicable installation, facility, and area commander installation and facility access and local security policies and procedures. The contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by the installation the USACE Security Office. The contractor workforce must comply with all personal identity verification requirements as directed by DOD, HQDA, and/or local policy. In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection Condition (FPCON) at any individual facility or installation change, the Government may require changes in contractor security matters or processes. The contractor must submit the full name, Social Security Number/or/ valid driver’s license number with state of issue, Date of Birth, and Place of Birth/Citizenship for all associated contractor or subcontractor employees to the USACE Security Office, Joseph M.

Bali, 412-395-7162, joseph.m.bali@usace.army.mil. The email name check request must contain the USACE Pittsburgh District contract number and location. The required information may be faxed to 412-395-7173 with a coversheet that identifies the USACE Pittsburgh District contract number and location and an email address for the requesting contractor. The District retains the right to deny any contractor and subcontractor employee from working on one of its contracts based on final background investigation results.

1.13.2 Instant Verification of Employment Eligibility (E-Verify)

The Contractor must pre‐screen Candidates using the E‐verify Program (http://www.uscis.gov/e-verify ) website to meet the established employment eligibility requirements. The Vendor must ensure that the Candidate has two valid forms of Government issued identification prior to ensure the correct information is entered into the E‐verify system. An initial list of verified/eligible Candidates must be provided to the KO no later than three (3) business days after notice to proceed.

1.13.3 Employee Identification and Background Check

The Contractor shall be responsible for furnishing an identification badge/card to each employee prior to the employee working on-site and for requiring each employee engaged on the work to display identification. Identification shall consist of nametags with the name of the Contractor and the employee's name. Additionally, a valid state driver's license or other Government-issued photo identification card is required for positive identification. Each employee shall be subject to a background check in accordance with "Homeland Security Presidential Directive (HSPD) 12: Policy for a

Common Identification Standard for Federal Employees and Contractors" (HSPD- 12).

Only those individual employees that were specifically identified and approved shall be cleared to work on Government property.

2. MATERIALS

2.1 Single-ply EPDM Membrane

Ethylene Propylene Diene Terpolymer (EPDM), ASTM D4637/D4637M, Type I, non-reinforced, 0.090-inch nominal thickness for fully adhered application. Provide membrane with minimum thickness not less than minus 10 percent of the specified thickness value. Principal polymer used in manufacture of the membrane sheet must be greater than 95 percent EPDM. Provide a fully adhered rubber roof system.

2.1.1 Splices and Laps

Contractor shall use manufacturer recommended double sided seam tape, or where allowed, lap splice adhesive, for watertight bonding of EPDM sheet materials to each other for the application specified and conditions encountered. Seam tape or synthetic rubber adhesive shall be as supplied by roof membrane manufacturer and recommended by the manufacturer's printed data.

2.1.2 Bonding Adhesive

Bonding adhesive shall be as supplied by roof membrane manufacturer and recommended by the manufacturer's printed data for bonding EPDM membrane materials to insulation, wood, metal, concrete or other substrate materials. Bonding adhesive shall not be used to bond membrane materials to each other.

2.1.3 Pre-manufactured Accessories

Pre-manufactured accessories shall be manufacturer's standard for intended purpose, must comply with applicable specification section, be compatible with the membrane roof system and approved for use and supplied by the EPDM roof membrane manufacturer.

2.2 Roof Insulation

Ensure insulation system and facer material is compatible with membrane application specified and as approved by the roof membrane manufacturer. Provide a rigid, tapered roof insulation panel composed of a closed-cell Polyisocyanurate foam core bonded on each side to fiber-reinforced paper facers. Provide all appropriate fasteners for each deck type on the project that is recommended by the Manufacturer. Panels are installed smoothly and evenly, and are not broken, cracked, or curled. There are no gaps in insulation panel joints exceeding 1/4 inch in width. Insulation shall be roofed over on the same day the insulation is installed per the Manufacturer’s Recommendations.

2.3 Flashing

Lead, lead-coated metal, and galvanized steel shall not be used. Materials shall match or be similar to the existing adjacent materials for compatibility. Accessories and other items essential to complete the sheet metal installation, though not specifically indicated or specified, shall be provided.

2.3.1 Aluminum Extrusions

ASTM B 221M ASTM B 221, Alloy 6063, Temper T5.

2.3.2 Membrane Flashings and Flashing Accessories

Provide membrane flashing, including self-adhering membrane flashing, perimeter flashing, flashing around roof penetrations, and prefabricated pipe seals, that is minimum 0.045 inch cured EPDM, as recommended by the roof membrane manufacturer or minimum 0.055 inch thick uncured EPDM sheet in compliance with ASTM D4811/D4811M, Type I. Use cured EPDM membrane to the maximum extent recommended by the roof membrane manufacturer. Limit uncured flashing material to reinforcing inside and outside corners and angle changes in plane of membrane, and to flash scuppers, pourable sealer pockets, and other formed penetrations or unusually shaped conditions as recommended by the roof membrane manufacturer where the use of cured material is impractical.

2.4 SEALANT

Elastomeric sealants shall conform to ASTM C 920 and the following:

a. Polysulfide Sealant: Type S, Grade NS, Class 25, Use NT, A.

b. Polyurethane sealant: Grade NS, Class 25, Use NT, A.

c. Silicone sealant: Type S, Grade NS, Class 25, Use NT, A.

2.5 POLYVINYL CHLORIDE (PVC) REGLETS

ASTM D 1784, Class 14333D, 1.9 mm 0.075 inch minimum thickness

2.6 Bonding Adhesive

Low volatile organic compound (VOC) adhesive as supplied by roof membrane manufacturer and recommended by the manufacturer's printed data for bonding EPDM membrane materials to insulation, wood, metal, concrete or other substrate materials. Do not use bonding adhesive to bond membrane materials to each other.

3. EXECUTION

3.1 Roof Inspection

Contractor is required to conduct a general roof inspection with ACO present to identify any deficiencies before project closeout. Upon completion of the inspection, the contractor is required to submit an inspection report including professional recommendations and sketches, as required by ACO for review.

3.1.1 Leak test

Contractor shall perform a functional inspection of the roof drain lines. A functional inspection will require the contractor to fill the drainpipes with water and check for leaks. The contractor and ACO will inspect the drain line for leakage. Drain lines 1 foot below ceiling surface shall be operational with no leaks at the end of the contract.

3.2 Operations Roof

Contractor shall remove existing roof system down to the deck, i.e.-membrane, insulation, etc. Contractor shall prepare existing sub-surface IAW manufacture’s installation instructions. Contractor shall replace drains and drainpipes from 1 foot below ceiling surface to the drain on the roof surface.

Contractor shall ensure there are no gaps in insulation board joints exceeding ¼ inch in width. Insulation shall be roofed over on the same day the insulation is installed and installed per the Manufacturer’s Recommendations. Contractor understands that any nonconformance with the provisions subjects the insulation to removal and replacement.

Contractor shall install a single ply fully adhered 0.090 inch EPDM membrane roof system to include, but not limited to, insulation, drains, membrane, flashing in compliance with the manufacturer’s warranty requirements and the National Roofing Contractors Association (NRCA) roofing manual. Contractor shall seal the EPDM around all existing items that protrude thru or from the roof IAW manufacturer’s installation instructions.

Contractor shall supply the ACO with flashing details to include manufacturer’s product details, product specification and any installation considerations for the roof prior to beginning work. Contractor shall supply shop fabricated corners for aluminum flashing.

No mitered corners shall be made in the field without prior approval of the ACO, and at the ACO’s discretion. The contractor shall supply a workmanship sample of field fabricated flashing corners to the ACO for approval.

Morgantown L&D Roof Photos

Figure 1. Morgantown Operations Building Aerial view

Figure 2. Morgantown Operations Building

Figure 3. Morgantown US Deck, note dryvit.

Figure 4. Morgantown Roof US parapet

Figure 5. Morgantown Roof US

Figure 6. Morgantown Roof seams, note dryvit in background

Figure 7 - Morgantown Roof DS

Figure 8 Reference Drawing