SOW_JFB_Roof_Replacement.pdf

GENERAL SERVICE ADMINISTRATION Region 10

Juneau Federal Building Roof Replacement

U.S. GENERAL SERVICES ADMINISTRATION, NORTHWEST/ARCTIC REGION 10

SCOPE OF WORK

Section 1:

Project Location & Building Number

Section 2:

Project Background

Section 3:

Work Hours

Section 4:

Parking/ Loading Dock

Section 5:

General Information

JUNEAU FEDERAL BUILDING

709 W. NINTH STREET

JUNEAU, ALASKA 99801

AK0013AK

The roof at the Juneau Federal Building (JFB) is over 30 years old in sections and has experienced leaks in multiple locations causing water and equipment damage to tenant’s property. There are four (4) roof sections to be replaced. These roofs have exceeded their normal life expectancy. Numerous repairs have been completed over this time period including major repairs near twenty years ago. Additionally, the existing fall restraint system is inadequate and requires modification and replacement.

The JFB is on the National Register of Historic Buildings. All work should comply of the Secretary of Interior's Guidelines for the Treatment of Historic Properties. The JFB attained a LEED Silver certification in 2015.

Work hours for this project are unrestricted. Normal JFB business hours are 8:00 AM to 5:00 PM weekdays, except Federal holidays. Contractor shall schedule the work in writing at least seven (7) calendar days in advance with the GSA Project Manager (PM).

Contractor parking and access to the loading dock at the JFB are limited and require written coordination with the GSA Project Manager at least 7 calendar days in advance.

1. All work shall comply with GSA’s PBS P100 2017, Facility Standards for the Public

Buildings Service http://www.gsa.gov/portal/content/104821, as well as latest version of GSA Region 10 Fire Alarm Design, Installation and Testing Policy. In the event of guidance inconsistencies, request written clarification from GSA.

2. Specific attention should be given to PBS P-100 Chapter One requirements including Laws, Regulations, Codes and Standards, and Key Sustainable Product requirements for carpet, interior paint, gyp board, ceiling tiles, and concrete.

3. Contractor shall provide all supplies, equipment, materials, services, and labor to perform the work.

4. Contractor shall be responsible for obtaining all necessary local, state, and federal permits, licenses, and clearances.

http://www.gsa.gov/portal/content/104821

Section 6:

Project Description

5. Field Verification: All work dimensions, quantities, and locations shall be field verified by the contractor.

6. Contractor Use of Premises: The Contractor shall coordinate with the GSA Project

Manager (PM) to arrange a schedule for site access during construction.

Construction processes disruptive to normal facility operations shall be coordinated with the GSA PM in writing at least 7 calendar days in advance. The Contractor shall be authorized to use building restrooms.

7. Utilities: Contractor shall be authorized to use utilities during the course of this project. The contractor is responsible for making connections to the existing utility systems. Temporary electrical work shall meet the requirements of NFPA 70. When temporary connections are removed, the Contractor is responsible for restoring existing utility services to their original condition.

8. Utility Outages and Locates: No utility outages will be approved without the written consent and approval of the GSA PM. Requests for utility outages shall be coordinated in writing at least 5 business days in advance with the GSA PM.

9. Protection of Public: The building site will continue to be used by tenants. The contractor shall fence, barricade, or otherwise block off the immediate work area to prevent unauthorized entry and ensure all tools, materials, debris, etc. remain secure on rooftop (no inadvertent drops).

10. Housekeeping: The project site shall be kept in a neat, orderly, and safe condition at all times and all work areas shall be cleaned at the end of each work day. A final cleaning of the entire construction area will be required at substantial completion of the project. Final Cleaning to include (1) Removal of all tools, equipment, surplus material, and rubbish/debris; (2) Restore or refinish, to original condition, surfaces that are damaged due to the work of this contract; (3) Removal of grease, dirt, stains, foreign materials, and labels from finished surfaces; and (4) thoroughly clean building interiors.

11. Disposal: Ensure all waste materials and debris is disposed at an Alaska

Department of Environmental Conservation (DEC) approved disposal site, in accordance with applicable environmental regulations. Unless otherwise specified, all material(s) removed becomes the property of the Contractor.

12. Communications: Contractor project designee must be available to provide project status updates to GSA each work day. Weekly project meetings will be scheduled by the contractor to discuss project work status, two week look-ahead for projected work, and any projected obstacles to timely project completion.

Contractor will forward digital photos to meeting attendees a minimum of 1 hour prior to the scheduled meeting.

Execute the project as follows:

1. Proposal: Roof plan will follow PBS P-100 standards and the recommendations of the National Roofing Contractors Association (NRCA) as contained in NRCA publication, NRCA Roofing and Waterproofing Manual, latest edition. The design of metal flashing, trim, and roofing must follow the recommendations of the Sheet Metal and Air Conditioning Contractors’ National Association publication, Architectural Sheet Metal Manual. In addition, all roof assemblies and rooftop structures must meet the requirements in the International Building Code. Additionally, incorporate guidance on replacement of roofing on historic buildings found in Historic Building Roofing at www.gsa.gov/technicalpreservationguidelines

Develop a bid plan to replace approximately 46,000 square feet (SF) roof area shown on attached JFB Roof Replacement Site Plan. Design must meet a useful life of twenty (20) years IAW PBS P-100.

Submit design for 80 mil thickness Polyvinyl-Chloride (PVC) membrane to Contracting Officer for GSA selection. Additional roofing membrane choices may also be submitted. Sample of primary membrane material is to be included with submittal.

Design plan must include complete replacement of all rooftop insulation and drain hardware for the selected roofs. Locate breaks in membrane support away from valleys to the maximum extent possible. Existing roof utilizes dimensional lumber under plywood sheathing. Much of this existing lumber is not pressure treated and has suffered moisture damage. Remove all damaged material, and replace all lumber required for new installation with pressure treated rated for ground contact.

Design must also include complete retrofit of existing fall restraint system (railings, anchors and horizontal lifelines, etc.) to meet current OSHA standard 29 CFR 1926 Subpart M requirements for a permanent use system. Lifeline design must be able to ensure all roof top areas can be accessed. If permissible, plan to inspect and re-certify existing install along North side of building directly below penthouse. Match this design at East, West, and South sides. Provide design solutions for higher Penthouse and lower Post Office and Loading Dock Canopy roofs.

Submit preliminary project management narrative discussing roof access plan for personnel, equipment, demolition of existing roofing, and materials transfer. Include discussion on safety, quality control, and communication.

2. Design Development: Contractor will submit each design phase for GSA Project Manager and Contracting Officer’s approval. Contractor receipt of approved comments will begin next phase. All approved comments and corrections will be included on next phase submission. 100% drawings showing all final corrections and comments must be submitted within fourteen (14) calendar days of 95% approval.

Upon NTP for Design, Contractor and Government will adhere to following design and review timeline:

50% Design Submittal 45 Calendar Days

Government Review 35 Calendar Days

Incorporate Review Comments 10 Calendar Days

95% Design Submittal and Specs 20 Calendar Days http://www.gsa.gov/technicalpreservationguidelines

Government Review 14 Calendar Days

Incorporate Review Comments 14 Calendar Days

Design details must provide minimum flashing heights required for curbs, walls, parapets, etc. Non-tapered insulation will require raising units, parapets, etc. Sheet metal, flashings, roof composite construction, parapets, terminations, expansion joints, and penetrations shall be designed according to the NRCA Roofing and Waterproofing Manual details and specifications.

Insulation system shall be compatible with the application and warranty specified.

Insulation value must meet or exceed a minimum of R-38 in all locations. Roofing manufacturer must approve the insulation system required for roofing warranty.

The completed roof covering assembly shall be rated in accordance with FM P7825, capable of withstanding an uplift pressure as determined by ASCE7-10 and FM 1-49 for perimeter and flashing attachment. In the event that there is a conflict between standards; the more stringent shall govern.

All roof replacement projects shall be designed for UL 90 or FM 1-90 ratings and specifications shall specify a minimum wind speed warranty of 100 MPH.

Minimum slope for all roofs shall be per manufacturer's written installation instructions with positive drainage and no ponds of water. Taper insulation at edge flashings if necessary to prevent ponding water.

No asbestos containing materials shall be allowed.

Provide walkways from roof access points to all roof top equipment. Match existing walkway layout and include a path to all roof-mounted equipment/antennas and roof drains, around base of penthouse, and near edge of each roof section.

Avoid interior gutter installations. Use two-piece, cast iron drain inlets at existing rain leader locations.

Temporary “Night-Seals” (Cut-Offs) must flash working edge of roof system down to the deck to prevent water penetration into the new roof.

Use standard roof symbols on all drawings and details as listed in the NRCA Roofing and Waterproofing Manual.

3. Government Review: The Government may require up to thirty five (35) calendar days to complete a historical and technical review prior to providing comments on the 50% design. Government review on 95% design may require up to fourteen (14) calendar days.

4. Construction: Upon NTP for Construction, the Contractor shall provide labor, material, tools, transportation, supplies, supervision, and equipment necessary to replace existing roof in accordance with approved design.

Prior to beginning work, the Contractor shall submit a construction schedule showing major milestones and significant site coordination events.

During all phases of construction, coordinate with Building Management to ensure unpleasant emissions and odors are not pulled into ventilation supply ducting.

Additionally, all antennas must continue to provide unimpeded communication and tracking capabilities throughout duration of project.

Remove any remaining unused ballast and protective pavers. Demo and remove all material down to roof substrate. Patch and repair any damaged substrate prior to waterproofing/vapor barrier installation.

Minimize penetrations in roofs, space penetrations shall be no closer than 24 inches apart, flashings shall extend a minimum of 12 inches above any overflow or drain, factory made penetration shall be used as much as possible, do not use galvanized material for flashings. Use a termination bar and counter-flashing at vertical walls. If a parapet is short or not watertight, extend membrane over the top of the wall and attach to front face behind cap. Allow for expansion and contraction in metal flashings and corner caps. Use umbrellas/hoods over all pipe flashings for equipment and pitch pockets if possible. Conduit and small pipe penetrations must be made through the side of metal flashings with proper sealants or with specifically designed conduit flashings.

Inspect and repair or replace all roof fixture penetrations. Inspect coping at each roof edge. Reuse coping whenever condition is acceptable.

Materials: All products shall consider the environment, both interior and exterior, and recycled or “green” technology shall be priority, per Presidential directives. All products shall be low or no emitting, volatile organic compounds (VOC), unless no other products are available for installations. If no other products are available, the Contractor shall provide a plan to mitigate short and long term exposure risks to building occupants, the Public and the environment. Upon approval of submittals, one set will be retained at the job site until the project is complete.

4. Substantial Completion: The contractor shall formally initiate and request

Substantial Completion review and acceptance seven (7) calendar days prior to the anticipated Substantial Completion date, both interim and final. The contractor shall submit with this request a punch-list identifying the remaining work to be performed and the dates these items shall be complete.

5. Inspections: At least fifteen (15) work days prior to completion of construction, the contractor representative shall submit request for a walk through inspection with GSA to identify any "punch list" items requiring repair or alteration necessary to meet the quality required under the contract. For any "punch list" items identified, the contractor shall submit a plan and schedule of corrections to the PM.

6. Defects and Omissions: Final inspection shall be coordinated and scheduled through the PM and CO.

7. Closeout Requirements: All items under this paragraph must be completed prior to submitting the final invoice for payment. Construction Debris, Contractor Tools, Equipment, and Materials shall be removed from the jobsite. Refuse and recycling records shall be provided as part of Closeout. Submit Release of Claims per contract requirements.

Contractor shall submit Defects and Omissions List to COR at least five (5) working days prior to scheduled close out meeting/completion of project. Upon receipt of the punch list, GSA will inspect the jobsite; based on the Contractor’s punch list and GSA’s inspection, GSA will provide the Contractor with any additions or comments within two (2) days.

Manufacturer’s Warranty Inspection will be coordinated with PM to ensure GSA participation.

8. Warranties: The following language is required for all roof warranties.

The roofing manufacturer shall provide written confirmation, submitted with shop drawings, that:

a All roofing components exclusive of the deck, contained in the system proposed are approved, and compatible with the warranty requirements of the roof system as specified, and that the warranty specified will be issued at completion of project if system is installed as designed.

b No less than a 20 year system warranty shall be provided for EPDM, TPO or PVC roofs. This warranty shall be for full replacement cost and shall be non-prorated. In addition, all insulation, flashings and penetrations shall be included within this warranty.

c Warranty shall be executed by both the system manufacturer and the roofing contractor.

d Special Warranty Language: The liability of the Surety under the installer warranty provisions of this contract is limited to correcting defective workmanship and materials for a period of 20 years from the Substantial Completion date of the project. Any warranty beyond these 20 years is an agreement between the Government and the Contractor and falls outside the performance bond obligation.

9. Roofing Installer's Warranty: Roofing Installers that have contracted (either directly with Government or indirectly as a subcontractor) to warrant said work against leaks and faulty or defective materials and workmanship for designated Warranty Period of five (5) years.

Roofing Installer warrants, subject to terms and conditions herein set forth, that during Warranty Period he will, at his own cost and expense, make or cause to be made such repairs to or replacements of said work as are necessary to correct faulty and defective work and as are necessary to maintain said work in a watertight condition.

This Warranty is made subject to the following terms and conditions:

Specifically excluded from this Warranty are damages to work and other parts of the

Section 7:

Submittals building, and to building contents, caused by:

a Lightning, peak gust wind speed exceeding 100 mph, fire, failure of roofing system substrate, including cracking, settlement, excessive deflection, deterioration, and decomposition, faulty construction of parapet walls, copings, chimneys, skylights, vents, equipment supports, and other edge conditions and penetrations of the work, vapor condensation on bottom of roofing and activity on roofing by others, including construction contractors, maintenance personnel, other persons, and animals, whether authorized or unauthorized by Government.

b When work has been damaged by any of foregoing causes, Warranty shall be null and void until such damage has been repaired by Roofing Installer and until cost and expense thereof has been paid by Government or by another responsible party so designated.

c The Roofing Installer is responsible for damage to work covered under Warranty.

d During Warranty Period, if Government allows alteration of work by anyone other than Roofing Installer, including cutting, patching, and maintenance in connection with penetrations, attachment of other work, and positioning of anything on roof, this Warranty shall become null and void on date of said alterations, but only to the extent said alterations affect work covered by this Warranty. If Government engages Roofing Installer to perform said alterations, Warranty shall not become null and void, unless Roofing Installer, before starting said work, shall have notified Government in writing, showing reasonable cause for claim, that said alterations would likely damage or deteriorate work, thereby reasonably justifying a limitation or termination of this Warranty.

e The Government shall promptly notify Roofing Installer of observed, known, or suspected leaks, defects, or deterioration and shall afford reasonable opportunity for Roofing Installer to inspect work and to examine evidence of such leaks, defects, or deterioration.

f This Warranty is recognized to be the installation warranty of Roofing Installer on said work and shall not operate to restrict or cut off Government from other remedies and resources lawfully available to Government in cases of roofing failure. Specifically, this Warranty shall not operate to relieve Roofing Installer of responsibility for performance of original work according to requirements of the Contract Documents and to coordinate the Manufacturer's warranty, regardless of whether Contract was a contract directly with Government or a subcontract with Government's General Contractor.

Submittals: Shop drawings, Manufacturers’ product data, product samples, and any product substitutions must be provided to the Contracting Officer for approval. All products specified are to establish a standard of quality. Submittals verify design intent;

however, approved submittals DO NOT automatically constitute a waiver to the contract document requirements. For submittals requesting a deviation from the contract documents, the deviation must be clearly called out by the contractor in the submittal language AND in the response provided by GSA. Deviations affecting cost must be approved under a contract modification by the Contracting Officer.

Section 8:

Attachments

Submittals required by this contract are the following: All Submittals must be accompanied by a letter of transmittal.

1. Design and shop drawings.

2. Schedule of Values (to be updated and submitted with each draft invoice)

4. Schedule - Submit proposed Project Schedule showing all project milestones and dates for Government meetings, reviews and inspections. Updated bi-weekly after construction start.

5. Project Management Plan (PMP) - The Contractor shall submit one (1) electronic copy of the PMP to the Contracting Officer (CO) and the PM.

6. Quality Control Plan (QCP) - submit a viable, documented plan for self-monitoring of project quality. GSA will perform random Quality Assurance inspections throughout the duration of the project to assure compliance with the QCP to the Contracting Officer (CO) and the PM.

7. Safety Plan - submit a site specific safety plan discussing pedestrian, vehicle, and local neighborhood risk mitigation to the Contracting Officer (CO) and the PM.

8. Product submittals - MSDS and Cut Sheets to the Contracting Officer (CO) and the

PM.

9. Product material samples.

10. O&M manuals & warranty documents at close-out.

11. As-built drawings – One (1) electronic set in CAD format, one electronic (1) set in

PDF format, and two (2) hard copy sets in Arch D size. At close-out.

Attachments:

1. JFB Roof Replacement Site Plan.

2. 1994 ACM Survey

END OF SCOPE