Attachment 1-DPW-18065-8J Statement of Work 20 May 2020 11 pages.pdf

Statement of Work Project: BLDG 1045 Roof Repair

DPW-18065-8J

20 May 2020

Project: DPW-18065-8J; FT. Wainwright

Building 1045 Roof Repair

1. GENERAL: Provide all materials, labor and equipment to repair BLDG 1045 in accordance with this statement of work and the construction documents attached, enclosed or previously provided. This project is intended to repair by replacement the existing roof tile. The objective of this project is to repair the roof while utilizing input from historical preservation to improve the visual aesthetics of Building 1045.

2. DEMOLITION: Selective demolition will be required as noted below in the scoped quantities.

3. ASSUMPTIONS: The roof of B1045 has reached or extended it’s intended life. The roof is currently functioning as a cold roof and the thermal envelope design is failing;

predominately noted by excessive ice damming which is resulting in minor structural damage. The intent is to repair the roof by transitioning the thermal envelope to a hot roof. In the process of repair, input from historical preservation is required, and it is required that the finished products visually resemble the original structure; a copper tile roof.

4. WORK REQUIRED: The features of work presented herein are delineated between interior (attic) and exterior (roof).

INTERIOR (Attic): The attic has two access points from the second floor ceiling. The attic ‘floor’ has a catwalk located along the centerline, and the length of the attic is segregated by seven draft stop walls. The following features of work shall be completed:

a. Seal all openings; eave vents, ridge vents, dormer vents. These existing openings shall be completely blocked and weather sealed, filled with foam and encapsulated with fire rated barriers. Specific detail on each effort is provided in the drawings and includes:

At base of decking, remove existing baffle and existing insulation, seal eave vents, fill space with spray foam. Area will be capped by GWB applied to rafters per detail.

At ridge vents, where existing roof decking is cut back, the existing is 3” wide on each side and shall be sealed per detail

At dormer vents, casing inside louvers shall be sealed per detail

b. Install a complete Spray Polyurethane Foam (SPF) insulation system to the interior side of the existing roof structural system. Rafters are 2”x10” at 24” OC. The spray foam shall be encapsulated with 1” EPS followed by 5/8” GWB Type X. No spray foam shall be exposed. See detail.

Apply a minimum depth of 8.5 inches of 2.0 pcf SPF between the existing roof rafters and associated structural members completely filling interstitial spaces between members to top of wall plate to provide a complete uniform roof insulation system free of voids in accordance with ASTM C1029-96.

Install 1” of 2.0pcf expanded polystyrene (EPS) rigid board insulation over all exposed roof rafters and structural members. The maximum distance for 1-inch EPS wrap to be installed on structural members is 12-inches from the plane of the roof sheathing. Intent was to not wrap the entire roof structural system in 1-inch EPS, just members within 12-inches of the roof sheathing.

Separate foam plastic insulation from interior of building in accordance with IBC 2603.4 requirements with special emphasis on 2603.4.1.5 Roofing. 5/8” GWB Type X is the material estimated to achieve these requirements.

GWB butted ends must be tight on all edges

If butted ends are not tight, Contractor will be required to apply fire tape to meet fire rating

c. Where the GWB reaches the joists, infill joists with spray foam, extending 2’ towards center line. Joists are 2’x8’ at 16” OC. This area, from GWB butting to joists extending 2’ towards center line shall be capped with 0.5” plywood such that all spray foam is completely encapsulated.

d. The existing cat walk, mounted on joists at centerline, shall be removed and new 0.75” plywood shall be installed, providing a 4’ wide catwalk at centerline

e. Areas of draft walls that are removed, estimating 8’ x 8,’ shall be reframed with 2”x4” studs at 16” OC. A portion of this framing will operate as a door and installed per detail, ensuring a latching passage function with three single acting spring hinges per opening.

f. Replace the existing attic access lids (2 ea.) with an insulated, fire rated metal access doors. These areas are recessed into the drop down ceiling and the existing design shall remain unchanged.

EXTERIOR (Roof): The roof has 13 dormers and 2 gables. The roof edge, and dormers, currently has stainless steel flashing, and the remainder of the roof covering is asphalt berrs. Work on the exterior shall include:

a. Demo of existing roof coverings (shingle and base layer, flashing and drip edges) to the original tongue and groove roof decking.

An inspection of the entire job site, prior to proposal, will be available at Contractor’s request. The Contractor shall estimate in the proposal a percentage of decking that is required to replace.

Once decking is exposed, inspection of decking should commence. Any failed decking members shall be replaced. Material selection shall be presented to the Government for approval

Demo of a section of roof decking to allow for materials to enter the attic may be approved. If the Contractor determines this method for material delivery, dimensions and location of a proposed roof deck penetration shall be included in the proposal.

b. Refinish all dormer frames and exhaust architectural louvers within the roof dormers.

Any louver or framing materials found to be in disrepair may only be replaced with expressed consent of the Government and approvals via Historical Preservation.

The Contractor shall inspect all identified dormers to determine the ratio of refinish to repair, and submit the anticipated level of effort in the proposal.

Provide with factory finish, color as selected by Government and 1-inch bird screen at any location not sealed by hot roof work.

Louver that are proposed for replacement shall resemble the existing material and be installed at spacing equal to existing.

Dormer finish shall include one coat primer, two coats paint

c. Refinish the exterior decking with Government approved roofing shingles, the manufacturer specified sub layer associated with the selected shingles, and application of ice and water shield.

Ice and water shield shall cover:

6’ on eves

6’, 3’ on each side, on ridge

3’ on rake edges

All dormers

All valleys

For consideration on proposal, the Government is evaluating American made steel shingles (e.g. Centura steel shingles or equivalent product)

d. All flashing at penetrations shall be removed and replaced with new material. This includes but is not limited to flashing around pipes, dormers and chimney.

e. Snow guards shall be installed per manufacturer specifications given the roof dimensions. These guards shall be a clear polycarbonate such that they do not deter from the intended visual appearance of the roof.

f. Other minor repairs include extension of one steam exhaust pipe. On the NE corner of the building, a non-pressurized steam vent penetrates the basement, at exterior ground level. This steam vent, a 2” pipe, shall be extended 4’ away from the building.

5. COMMUNICATIONS: All Building telecommunications infrastructure and cabling shall remain in place.

a. Communication and data lines run along the North section of the attic space.

These lines will be identified and documented during pre-inspection and any damage, caused by the Contractor or Sub-Contractors, to the existing communications system shall be repaired and commissioned to existing condition at the cost of the Contractor. The proposal may include a temporary protective measure to account for labor in the attic.

b. Any alteration to the existing communications system requires acceptance testing to ensure the functionality of the system remains as current. In the event the communications lines are damaged, the Contractor shall coordinate with the 59th Signal BN Plans section and submit for Government review a draft repair and test plan of all proposed cabling and equipment being installed. Upon the draft’s approval, the contractor shall prepare a finalized test plan to the

Government. After the contractor has completed the installation and testing, the contractor shall submit a test report for all fiber and copper cabling.

6. WARRANTY: All work shall be covered under the one-year warranty of construction clause (FAR 52.246-21, Warranty of Construction).

In addition to the one-year warranty of construction, the contractor shall obtain all warranties that would normally be given in commercial practice and, upon final acceptance of the work (or before), provide a list to the Government of each warranted equipment item, feature of construction, or system. The list shall indicate the following:

a. Name of item

b. Model and Serial Number

c. Installed location

d. Name and phone numbers of manufacturers or suppliers

e. Names, addresses, and phone numbers of sources of spare parts

f. Warranties and terms of warranty. Items with warranties extending beyond the one-year warranty shall be indicated with separate warranty expiration dates

g. Start date and duration of warranty period

h. Summary of maintenance procedures required to continue the warranty in force with cross-reference to specific pertinent operation and maintenance manuals as applicable

The list shall include the status of delivery of all Certificates of Warranty for extended warranty items, to include roofs, HVAC balancing, pumps, motors, transformers, and for all commissioned systems such as fire protection and alarm systems, sprinkler systems, lightning protection systems, etc.

At approximately four and nine months after acceptance the Government will conduct warranty inspections. The inspections will be scheduled by the Government Project Manager and conducted with the user, and, if possible, contractor personnel attending.

A list of deficiencies existing at the time will be compiled and furnished to the Contractor for correction.

7. SCHEDULE:

a. The Period of Performance is 400 days from NTP. After award, a construction schedule will be submitted prior to the preconstruction meeting.

b. A revised schedule shall be submitted at the time of the preconstruction conference, for approval. The schedule shall be in the form of a progress chart of suitable scale to indicate the percentage of work scheduled for completion at any given date during the period. The schedule shall take into consideration anticipated, adverse weather that could preclude expected progress, long-lead equipment or materials critical to the completion of the project, review periods for submittal items requiring Government review and approval, and other events and milestones as necessary.

c. Civilian/Military Occupancy: The building will be in use during the contract duration.

100% of the building will need to be available to the occupant at all times. The contractor shall schedule and perform work under this contract in such a manner as to allow adjacent users to continue their normal activities with the least amount of interference.

8. MATERIAL, STANDARDS, CODES, REGULATIONS, AND WORKMANSHIP:

a. All work shall be completed in accordance with the plans and specifications, applicable industry standards, SMACNA, NFPA, NEBB, ASHRAE, NEC, and AABC standards, federal, state and local codes, regulations, Fort Wainwright Checklists (see Fort Wainwright Design and Construction Guide – FWA D&CG) and Army requirements. The provisions of Public Law 109-58 (Energy Policy Act of 2005) shall be totally incorporated. In the event of a conflict with industry standards, project specifications will take precedence.

b. The contractor shall obtain specific approval for all materials and equipment that vary from the standards established herein. All work shall be performed in a skillful and workmanlike manner to current applicable industry standards. Work requiring certified craftsmen shall be performed by certified personnel. Proof of such certification, training, or other qualifications shall be made available to the Government upon request. If the manufacturer of any product used in accomplishing this project has published an installation and or operation manual, such manual shall be followed in its entirety. If any organization such as, but not limited to, APA or ANSI publish any construction guide, it will be followed as applicable to this project.

If the manufacturer’s manual deviates from any established code, regulation, local requirement or this scope of work, such deviation shall be brought to the attention of the government representative before award, for written resolution. A revised scope of work will be issued to specify such resolution and incorporated in any resulting award.

9. CLEAN UP: The contractor shall at all times keep the work area, including storage areas, free from accumulation of waste materials. All trash will be removed from the site on a daily basis. Upon completion of the project, all equipment, materials and other items associated with the project will be removed from the project site and the site will be left clean.

10. UTILITIES:

a. Where available, onsite utilities will be provided at no cost to the contractor. These utilities will be used only in the performance and support of the project.

b. Any temporary connection to the utility system will be coordinated with the contracting officer’s representative prior to hook-up. The contractor shall complete the temporary connection and all temporary electrical work in accordance with applicable codes and standards. Temporary electrical wiring and devices shall comply with the current National Electrical Code. Temporary wiring and devices shall be removed at project completion. All temporary electrical work shall be at the contractor’s expense.

c. STORAGE AREAS: The contractor and the Contracting Officer’s Representative will agree on temporary storage areas in the general location of the project. Request for proposed storage area shall be submitted with the proposal documents. The contractor shall be responsible for the safety, security and maintenance associated with storage areas. Storage areas shall be kept clean and in a neat and organized appearance at all times. If the storage area is not maintained, the Contracting Officer may direct the contractor to store materials off the installation. Contractor will apply for and obtain a lay down permit from the Master Planner at DPW; unless no lay down on the work site is contemplated.

11. 1354 WORKSHEET PREPARATION: DD Form 1354 is required for this project.

12. CONTROLLED AREAS: The contractor will be escorted for any and all work performed in controlled or secured areas. The occupant of the facility requiring the work will provide an escort for the contractor.

13. WASTE DISPOSAL AND BARROW PITS: The contractor shall comply with the Fort Wainwright Waste Disposal/Borrow Pit Plan and submit a project specific Environmental Protection/Borrow Pit Plan, if necessary as directed by DPW Environmental Division.

14. CONTRACTOR QUALITY CONTROL: The contractor is responsible for quality control and shall establish and maintain an effective quality control system. The Quality control system shall consist of plans, procedures, and organization necessary to produce an end product that complies with the specified requirements. The system shall cover all construction activities, both on site and off site, and shall be coordinated with the proposed construction schedule.

a. The contractor shall submit for review and approval a Contractor Quality Control Plan proposed to implement the specified requirements. The plan shall identify personnel, procedures, controls, instructions, tests, records, and forms to be used.

Construction will be permitted to begin only after acceptance of the CQC plan. The plan shall include, as a minimum, the following to cover all construction operations and features.

A description of the CQC organization and lines of authority (e.g., Organization Chart).

Names, qualifications, duties, responsibilities, and authorities of CQC personnel. Procedures for scheduling, reviewing, certifying, and managing submittals.

Procedures for conducting CQC inspections to include routine inspections, follow-up inspections on deficient work, pre-final inspections, and final inspections. Procedures for tracking construction deficiencies from the time of identification through acceptable corrective action (e.g., Deficiency Tracking Log).

Documentation and reporting procedures, including proposed reporting format.

b. The contractor shall maintain current records providing factual evidence that the required QC activities and/or tests have been performed. These records shall be furnished to the Government daily and within 24 hours after the date covered by the report (except when no work is performed; then one report shall be submitted for every seven days of no work). The reports shall include the work of sub-contractors and suppliers and shall be on an acceptable form that includes, as a minimum, the following information.

Contractor/subcontractor and their area of responsibility

Work performed each day, giving location, description, and by whom.

Weather conditions encountered.

Any delays encountered.

Test and/or control activities performed with results and references to specifications/drawings.

Materials received at the site with statement as to quantity and quality, acceptability, and storage.

Submittals and deliverables reviewed.

Job safety evaluations stating what was checked, results, and instructions or corrective actions taken.

Instructions given or received and conflicts in plans and or specifications.

Contractor’s verification statement that equipment and materials incorporated into the work and the workmanship comply with the specified requirements.

15. RECORD DRAWINGS (AS-BUILT)

a. When design drawings and/or shop drawings (produced by the Government or the contractor) are used in the performance of the work, the contractor shall maintain at least one (1) set of working as-built drawings by “red-line” process to show the as-built conditions during the prosecution of the project. These working as-built drawings shall be kept current on a regular basis (not less than weekly) and shall be available at the job site at all times or otherwise made available to the Government immediately upon request. All changes from the contract drawings and shop drawings made in the work shall be accurately and neatly recorded as they occur by means of details, notes, and additional drawings as may be necessary. The working as-built (red-lined) drawings will be jointly reviewed for accuracy and completeness by the Government’s Quality Assurance representative and the contractor prior to submission of periodic pay requests.

b. Final as-built drawings shall be prepared after the completion of the work. The contractor shall modify the final as-built drawings as necessary to correctly show the features of the project as it has been constructed by bringing the final as-built drawing set into agreement with the approved working “red-lined” as-built drawings.

The final as-built drawings will be jointly reviewed for accuracy and completeness by the Government’s Quality Assurance representative and the contractor prior to submission of final pay requests. When final revisions have been completed, the cover sheet drawing (or each individual sheet if no cover sheet is included) shall show the wording “AS-BUILT” followed by the name of the contractor.

16. INSPECTION:

a. All work is subject to inspection and testing by the Government at all places and at all reasonable times before acceptance. Government inspections and tests do not relieve the contractor of the responsibility for providing adequate quality control measures, nor does it constitute or imply Government acceptance of the work. The presence or absence of a Government inspector does not relieve the contractor of complying with the specified requirements, nor is the Government inspector authorized to change any term or condition of the specification without the Contracting Officer’s written authorization.

17. ACCIDENT PREVENTION:

a. The contractor shall comply with 29 CFR part 1926, 29 CFR part 1910, all state and local occupational safety and health requirements, and the requirements of EM 385- 1-1, U.S. Army Corps of Engineers Safety and Health Requirements Manual.

b. Special Safety Notes:

Contractor shall provide temporary barriers as required to separate construction and adjacent occupied areas.

Contractor shall take reasonable measures as required to mitigate noise and air pollution during construction in accordance with working adjacent to an occupied building.

18. ENVIRONMENTAL PROTECTION:

a. The contractor shall minimize environmental pollution and damage that may occur as the result of construction operations. The environmental resources within the project boundaries and those affected outside the limits of permanent work shall be protecting during the entire duration of the contract. The Contractor shall be responsible for any delays resulting from failure to comply with environmental laws and regulations. The Contractor shall comply with all applicable environmental Federal, State, and local laws and regulations, including but not limited to, USARAK Pamphlet 200-1 and DPW “Environmental Concerns for Construction and Renovation Projects” 04July08 REV2.

b. Land Resources-The Contractor shall confine all activities to areas defined by the drawings and specifications. Prior to the beginning of any construction, the Contractor shall identify any land resources to be preserved within the work area.

Except in areas indicated o the drawings or specified to be cleared, the Contractor shall not remove, cut, deface, injure, or destroy land resources including trees, shrubs, vines, grasses, topsoil, and land forms without approval.

The Contractor shall be responsible for providing erosion and sediment control measures in accordance with Federal, State, and local laws and regulations.

c. Water Resources-The Contractor shall monitor construction activities to prevent pollution of surface and ground waters. Toxic or hazardous chemicals shall not be applied to soil or vegetation unless otherwise indicated. The Contractor shall not allow discharge of contaminants into any wetlands.

d. Air Resources-Equipment operation, activities, or processes performed by the Contractor shall be in accordance with all Federal and State air emission and performance laws and standards. Dust particulates; aerosols and gaseous by-products from construction activities; and processing and preparation of materials, such as from asphaltic batch plants, shall be controlled at all times, including weekends, holidays, and hours when work is not in progress. Odors from construction activities shall be controlled at all times. The odors shall not cause a health hazard and shall be in compliance with State regulations and/or local ordinances. The Contractor shall comply with the provisions of the all State and Installation rules.

e. Waste Management-The Contractor shall transport solid waste off Government property and dispose of it in compliance with Federal, State, and local requirements for solid waste disposal. Segregation measures shall be employed so that no hazardous or toxic waste will become co-mingled with solid waste. The Contractor shall, at a minimum, manage and store hazardous waste in compliance with 40 CFR 262. The Contractor shall be responsible for storage, describing, packaging, labeling, marking, and placarding of hazardous waste and hazardous material I accordance with 49 CFR 171-178, State, and local laws and regulations.

19. SUBMITTALS:

When specified, or as directed, the contractor shall provide information and/or submit samples of materials that the contractor contemplates incorporating in the work. All submittals shall be at \ the contractor's expense, and documented on an approved Submittal Register, for items to be submitted. The contractor shall complete the Eng Form 4288 and submit it for Government approval prior to the preconstruction conference (PRECON).

Unless otherwise approved by the government, the contractor shall transmit all submittal items using Eng Form 4025, Transmittal of Shop Drawings, Equipment Data, Material, Samples, or Manufacturer's Certificates of Compliance. All transmittals shall be coordinated with the approved Eng Form 4288, Submittal Register. The Government's approval of submittals shall not be construed as a complete check, but will indicate only that the general method of construction, materials, detailing, and other information appear to meet the contract requirements and the accepted proposal. Approval will not relieve the contractor of the responsibility for any error which may exist. The contractor's Quality Control representative shall certify on the Eng Form 4025 that he/she has reviewed the submittal item and that it conforms to the contract requirements. Variations from contract requirements require Government approval. When proposing variations, clearly mark the accompanying Eng Form 4025 as a variation and provide documentation of the nature and features of the variation and why it is desirable and beneficial to the Government. If lower cost is a benefit, also include an estimate of the cost saving. Clearly mark the proposed variation in all documentation. The following submittal items are anticipated for this project:

Submittals required with proposal:

1. Shop Drawings, sketches

2. Calculations

3. Catalog cuts (everything needed to support the proposal)

4. Specifications (equipment, materials)

5. Tentative project schedule with Schedule of Values

6. Quality Control and Accident Prevention Plans

Submittals required prior to start of construction (normally at the PRECON) shall include:

1. Sub-contractor personnel list (POC with phone number) with fitness certification (for the work being performed)

2. Shop drawings

3. Submittal Register

4. All finish material samples and/or product data,

5. All trade materials (mechanical, electrical, paint, carpenter, communication, etc.).

6. Revised (approved) construction schedule

Submittals required during the construction period: If necessary

1. T&B reports – certified by NEBB Technician

2. Commissioning Reports

3. Draft 1354 Worksheet

Submittals required near the end of the project but before final inspection: If Necessary

1. O&M manuals – 3 hard copies (bound and indexed) and one computer disk (CD)

2. Repair parts list and vendors

3. Record of Training of shop personnel

4. Final Commissioning Reports – certified by Professional Engineer

5. Maintenance paint

6. Record drawings and/or As-Built drawings – One (1) set of mylars and one (1) CD (Submit using DD Form 250)

7. Completed 1354 Worksheet

20. FINAL INSPECTION AND ACCEPTANCE:

Final inspection and acceptance shall be conducted after the pre-final inspection punch-list items are completed. The CQC representative compiles the pre-final punch list immediately after the work is completed. The Government’s QA representative will sign for completion documents up to 90% (all work completed and beneficial occupancy taken) and the project manager will sign the final 100% payment documents upon receipt of acceptable as-built drawings and any delayed work.

PREPARED BY: MICHAEL KUCA, DPW/PM