J.2 Statement of Work Maps Specs (10 Pages).pdf

MEDICINE BOW‐ROUTT NATIONAL FOREST

PARKS RANGER DISTRICT

FIRE WORK CENTER ROOF REPLACEMENT

STATEMENT OF WORK

June 30, 2023

CONTENTS PAGE

Project 3

General Information

1.0 Background 3

2.0 Scope of Work 3

Contractor Requirements

3.0 General Requirements 3‐7

4.0 Products 7‐8

5.0 Execution 9

Additional Requirements

6.0 Government Furnished 10

7.0 Deliverables/Performance Period 10

8.0 Travel 10

9.0 Contractor’s Key Personnel 10

10.0 Security and Safety Requirements/Hours of Operation 10‐11

11.0 Definitions 11

Attachments 12

Project Parks Ranger District Fire Work Center Roof Replacement.

General Information

1.0 Background

Within the Medicine Bow‐Routt National Forest, the Parks Ranger District Fire Work Center is a 510 square foot, single‐ story, lightwood‐framed, slab‐on‐grade structure constructed in 1958. The Parks Ranger District Fire Work Center is physically located on 4th Street in Walden, CO 80480 (vic 106.2803024°W, 40.7315742°N). This structure is used year‐ round as a Fire crew workshop and equipment storeroom.

The roof of the Parks Ranger District Fire Work Center is constructed of wood shake shingles and covers approximately 758 square feet with an 8/12 pitch. Fire risk and the lack of adequate weather protection necessitates an immediate replacement which meets current Forest Service requirements.

2.0 Scope of Work

2.1 The Contractor shall:

2.1.1 Remove and dispose of existing roofing system, including perimeter, blocking material, and sheathing, as needed, as per the provisions of this contact/statement of work (SOW).

2.1.2 Furnish and install a weather and watertight Structural Standing Seam Roof System (SSSRS), complete, in‐ place, as per the provisions of this contact/statement of work (SOW).

Contractor Requirements

3.0 General Requirements

3.1 General

3.1.1 Furnish all labor, material, tools, equipment and services for all preformed roofing as indicated, in accordance with the provisions of this contact/statement of work (SOW);

3.1.2 The Contractor will provide all components required for a complete metal roofing system to include panels, panel clips, trim/flashing, facias, ridge, closures, sealants, fillers and any other required items.

3.2 Quality Assurance

3.2.1 Applicable Standards

A. AISI D111, Design Guide for Cold‐Formed Steel Purlin Roof Framing Systems, 2011 Edition;

B. AISI S100‐16 (2020) w/S2‐20, North American Specification for the Design of Cold‐Formed Steel Structural Members, 2016 Edition (reaffirmed 2020) with Supplement 2;

C. ASTM A653, Specification for Steel Sheet, Zinc‐Coated (Galvanized) or Zinc‐Iron Alloy‐Coated (Galvannealed) by the Hot‐Dip Process, American Society for Testing and Materials, 2000 Edition;

D. ASTM A792, Standard Specification for Steel Sheet, 55% Aluminum‐Zinc Alloy‐Coated by the Hot‐ Dip Process, 2010 Edition;

E. ASTM E1514, Standard Specification for Structural Standing Seam Steel Roof Panel Systems, 2017 Edition;

F. ASTM E1592, Standard Test Method for Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure Difference, 2017 Edition;

G. ASTM E1646, Standard Test Method for Water Penetration of Exterior Metal Roof Panel Systems by Uniform Static Air Pressure Difference, 2018 Edition;

H. ASTM E1680, Standard Test Method for Rate of Air Leakage through Exterior Metal Roof Panel Systems, 2022 Edition;

I. Metal Roofing Systems Design Manual (MBMA), 2020 Edition;

J. UL 580, Tests for Uplift Resistance of Roof Assemblies, 2019 Edition;

K. International Building Code (IBC), 2018 Edition;

L. All other loading/structural design criteria shall meet or exceed ASCE 7 Standards;

M. Any applicable Federal, State, and County Codes and regulations.

3.2.2 Manufacturer’s Qualifications

A. Manufacturer shall have a minimum of three years’ experience in manufacturing metal roofing systems [and shall be accredited under the International Accreditation Service, "Accreditation Criteria for Inspection Programs for Manufacturers of Cold‐Formed Steel Structural and Nonstructural Components Not Requiring Welding (AC473)."

B. Panels specified in this section shall be produced in a permanent factory environment with fixed‐base roll‐forming equipment.

3.2.3 System Performance Requirements

A. Metal roofing systems shall be tested in accordance with UL580, Class 90 rating;

B. Metal roof panel systems shall be tested in accordance with ASTM E1592 for negative loading.

Capacity for gauge, span or loading other than those tested is permitted to be determined by interpolating between test values only;

C. Metal roof panel systems shall have a maximum air infiltration rate of 0.007 f3/ft2 at a pressure differential of 6.24 psf. when tested in accordance with ASTM E1680;

D. Metal roof panel systems shall have no water leakage at a pressure differential of 6.24 psf when tested in accordance with ASTM E1646;

E. The panels and concealed anchor clips shall be capable of supporting a 300‐pound temporary concentrated load at the panel mid‐span in the installed condition. The load shall be applied over the entire panel width. The panels shall support this concentrated load without displaying permanent distortions that would affect the weathertightness of the SSSRS.

3.2.4 Design Requirements

A. General

1. The SSSRS shall be designed by the Manufacturer as a complete system. Members and connections not indicated on the drawings shall be the responsibility of the Contractor. All components of the system shall be supplied or specified by the same manufacturer.

B. Design Loads

1. Design load application shall be in accordance with ASCE‐7 Standards;

2. Dead load: The dead load shall be the weight of the SSSRS. Collateral Loads shall be as shown on the contract drawings. Collateral Loads shall not be applied to the roof panels;

3. Live load: The panels and concealed anchor clips shall be capable of supporting a minimum uniform live load of 20 psf;

4. Ground snow load: 52 pounds per square foot (PSF);

5. Wind design speed: 90 miles per hour (MPH), Exposure C;

6. Thermal effects: Roof panels shall be free to move in response to the expansion and contraction forces resulting from temperature variation, as specified in the MBMA Metal Roofing Systems Design Manual;

7. Rainfall intensity: All exterior gutters and downspouts shall be designed for rainfall intensity based upon a 5‐year recurrence interval for a five‐minute duration. All interior gutters, valleys and downspouts shall be designed for rainfall intensity based upon a 25‐year recurrence interval based on a five‐minute duration.

C. Framing Members Supporting the SSSRS

1. Any additions/revisions to framing members supporting the SSSRS to accommodate the manufacturer/fabricator’s design shall be the Contractor’s responsibility and shall be submitted for review and approval by MBRTB Engineering. New or revised framing members and their connections shall be designed in accordance with [AISC 360] [AISI S100] [SJI K1.1] design specifications. Deflection requirements shall be in accordance with the applicable building code, or as a minimum, the provisions of the AISC Steel Guide Series 3 – Serviceability Design Considerations for Steel Buildings, 2nd Edition.

D. Roof Panels

1. Steel panels shall be designed in accordance with the AISI S100;

2. Deflection requirements shall be in accordance with the applicable building code, or as a minimum, L/180 for roof snow load (but not less than 20 psf).

E. Accessories and Their Fasteners

1. Accessories and their fasteners shall be capable of resisting the specified design wind uplift forces and shall allow for thermal movement of the roof panel system. Exposed fasteners shall not restrict free movement of the roof panel system resulting from thermal forces, except at designed points of roof panel fixity.

3.2.5 Submittal Requirements

A. Installation Drawings

1. Submit completed installation drawings and installation details by the manufacturer, to the MBRTB Engineering for review. Do not proceed with manufacture prior to review and MBRTB Engineering approval of installation drawings;

2. Installation drawings shall show methods of installation, elevations and plans of roof and wall panels, sections and details, specified loads, flashings, roof curbs, vents, sealants, interfaces with all materials not supplied by the metal roofing system manufacturer, and proposed identification of component parts and their finishes.

B. Color Samples

1. Submit color photos for all proposed finishes.

3.2.6 Product Delivery, Storage, and Handling

A. Delivery

1. Deliver metal roofing system to job site properly packaged to provide protection against transportation damage.

B. Handling

1. Exercise care in unloading, storing, and installing metal roofing system to prevent bending, warping, twisting and surface damage.

C. Storage

1. Store all material and accessories above ground on well supported platforms. Store under waterproof covering. Provide proper ventilation of metal roofing system to prevent condensation build‐up between each panel or trim/flashing component.

3.2.7 Contractor Responsibilities

A. The Contractor shall coordinate with the Contracting Officers Representative (COR) no less than seven (7) calendar days prior to the estimated project start date;

B. The Contractor shall provide the Contracting Officers Representative (COR) an estimated work schedule no less than seven (7) calendar days prior to the estimated project start date;

C. The Contractor shall be responsible for any loss of or damage to the structure, accessories, and/or fixtures occurring during the performance of work specified in the contract/SOW;

D. The Contractor shall keep the premises and surrounding area free from accumulation of debris and trash related to the work to the reasonable satisfaction of the Contracting Officers Representative

(COR);

E. Restroom facilities WILL NOT be available; the Contractor shall be responsible for furnishing temporary, on‐site restroom facilities for employees and subcontractors;

F. At the completion of the work, the Contractor shall remove its tools, construction equipment, machinery, and surplus material, and shall properly dispose of waste materials.

3.2.8 Warranty Requirements

A. The Contractor shall warranty all parts, materials, and workmanship for a minimum of one (1) year from the date of work completion;

B. When remediation, correction or replacement is required, transportation charges and responsibility for the parts or materials, shall be borne by the Contractor;

C. Any parts or materials thereof, furnished for the purposes of remediation, correction, or replacement under this contract/SOW, shall also be subject to the terms of this contract/SOW to the same extent as parts or material initially installed. The warranty, with respect to parts or materials thereof, shall be equal in duration to the original terms (Paragraph 3) and shall run from the date of installation of the remediated, corrected, or replaced parts or materials.

4.0 Products

4.1 Materials

4.1.1 Metal Roof Panel

A. Profile: 1.5 inch high rib (nominal) x 16 inch wide panel (nominal);

B. Seam Type: Snap Connection or Mechanically Seamed;

C. Minimum Thickness: Panel to meet all specified design loads, but not less than 0.015 inches (28 Gauge);

D. Panel Base Material: Galvanized steel sheet, G90, conforming to ASTM A653;

E. Texture: Smooth;

F. Finish

1. Roof panel color: Benjamin Moore “Green Grove” (2138‐20), “Southern Vine” (2138‐10), “Artichoke” (2141‐10), or approved equal as identified in Appendix C, Color Palette, FSH 2709.11;

2. Roof panel finish: Shall be a thermoset silicone polyester, fluoropolymer coating produced with minimum 70% PVDF resin, or approved equal.

4.1.2 Concealed Anchor Clips

A. Concealed anchor clips shall be the same as those used during the testing of the roof system. Clip bases shall have factory punched or drilled holes for attachment. Clips shall be made from multiple pieces with the allowance for the total thermal movement required within the clip. Fixed clips are permitted when the manufacturer can substantiate that the system can accommodate the thermal cyclic movement under sustained live or snow loads.

4.1.3 Fasteners

A. Fasteners for steel roof panels shall be zinc‐coated steel, aluminum, corrosion resisting steel, or nylon‐capped steel, type and size specified below, or as otherwise, approved for the applicable requirements. Fasteners for aluminum roof panels shall be aluminum or corrosion resisting steel.

Fasteners for structural connections shall provide both tensile and shear ultimate strengths of not less than 750 pounds per fastener. Fasteners for accessories shall be the manufacturer’s standard.

Exposed roof fasteners shall be sealed or have sealed washers on the exterior side of the covering to waterproof the fastener penetration. Washer material shall be compatible with the screw head; have a minimum diameter of 3/8‐inch for structural connections; and gasket portion of fasteners or washers shall be neoprene or other equally durable elastomeric material.

4.1.4 Components

A. Components shall be compatible with the roof panel furnished. Flashing, trim, metal closure strips, caps, gutters, downspouts, roof curbs, and similar metal components shall not be less than the minimum thickness specified by the SSSRS Manufacturer. Exposed metal components shall be finished to match the panels or trim, as furnished. Molded closure strips shall be closed‐cell or solid‐ cell synthetic rubber or neoprene, or polyvinyl chloride pre‐molded to match configuration of the covering and shall not absorb or retain water. Thermal spacer blocks and other thermal barriers at concealed clip fasteners shall be as recommended by the SSSRS Manufacturer.

4.1.5 Sealants

A. All tape sealants shall be a pressure sensitive, 100 percent solid, sealing tape with a release paper backing. Provide permanently elastic, non‐sagging, non‐toxic, non‐staining tape sealant approved by the SSSRS Manufacturer;

B. The SSSRS Manufacturer shall approve all joint sealant that will encounter the SSSRS.

4.2 Fabrication

4.2.1 Panels shall be produced by a SSSRS Manufacturer meeting the requirements of section 3.2.2;

4.2.2 Fabricate trim, flashing and accessories to Manufacturer’s specified profiles.

4.3 Prefabricated Curbs and Equipment Supports

4.3.1 Provide the SSSRS Manufacturer with the dimensions, weights, and model number of the units to be supported by the curb(s);

4.3.2 Fabricate curbs of structural quality aluminum, Galvalume®, or hot‐dipped galvanized sheet. Curbs shall have welded joints unless a two‐piece curb is required. Provide integral base plates and water diverters/crickets. Front base plate shall be extended up‐slope from the beginning of the water diverter.

Curbs shall be designed for a compatible installation with the panel system;

4.3.3 Curbs shall be constructed to match the roof slope and provide a mounting surface as required by the rooftop unit manufacturer;

4.3.4 Any curb structural support system shall allow thermal movement of the curb with the roofing system.

4.4 Prefabricated Pipe Flashings

4.4.1 Pipe flashings shall provide a weathertight joint at projections through the roof, taking into account the thermal movement of the roof and the service temperature of the projection. Pipe flashings shall have an aluminum‐flanged base ring.

5.0 Execution

5.1 Surface Conditions

5.1.1 Examination

A. The Contractor shall verify installed work of other trades that such work is complete to a point where the roofing system installation may commence;

B. Verify that the substructure installation is in accordance with the approved shop drawings and SSSRS Manufacturer’s requirements. This specifically includes verifying that secondary structural members or decking are installed to meet performance requirements. Coordinate with SSSRS Manufacturer to ensure that the substructure is installed to accommodate the appropriate clip spacing.

5.1.2 Discrepancies

A. In event of a discrepancy, or if unforeseen site conditions arise, the Contractor shall notify the CO or the COR;

B. The Contractor shall not proceed with installation until discrepancies have been resolved.

5.2 Installation

5.2.1 Install the SSSRS in accordance with manufacturer’s instructions and approved installation drawings;

5.2.2 Install the SSSRS so that it is weathertight and allows for thermal movements;

5.2.3 Locate and space all exposed fasteners in accordance with the SSSRS Manufacturer’s recommendations.

Use torque settings to obtain controlled uniform compression for a positive seal without rupturing the neoprene washer;

5.2.4 Avoid placing pipe penetrations through the panel seams;

5.2.5 Do not allow panels or trim to come into contact with dissimilar materials (i.e. copper, lead, graphite, treated lumber, mortar, etc.). Water run‐off from these materials is also prohibited;

5.2.6 Comply with SSSRS Manufacturer’s approved installation drawings, instructions and recommendations for installation of roof curbs. Refer to SSSRS Manufacturer’s standard installation details. Anchor curbs securely in place with provisions for thermal and structural movement.

5.3 Cleaning and Protection

5.3.1 Dispose of excess roofing materials and remove debris from site;

5.3.2 Clean work in accordance with manufacturer’s recommendations;

5.3.3 Protect work against damage until final acceptance. Replace or repair to the satisfaction of the CO and COR, any work that becomes damaged prior to final acceptance;

5.3.4 Touch up minor scratches and abrasions per the SSSRS Manufacturer’s recommendations.

Additional Requirements

6.0 Government Furnished

6.1 The Government will inspect all finished work for any damage, defects, and/or deviations from the contract/SOW.

7.0 Deliverables/Performance Period

7.1 Deliverables

7.1.1 The Contractor shall complete the Parks Ranger District Fire Work center roof replacement in accordance with the specifications and requirements as directed in this contract/SOW. All parts and materials are to be fully assembled and installed, and the roof prepared sufficiently so as the Parks Ranger District Fire Work Center is ready for immediate use/operation.

7.2 Performance Period

7.2.1 The Contractor shall complete the Parks Ranger District Fire Work Center roof replacement in accordance with the specifications and requirements as directed in this contract/SOW between August 28th, 2023 and October 29th, 2023.

8.0 Travel

8.1 The Contractor is responsible for all aspects of travel and billeting for its employees and subcontractors;

8.2 Camping on Government property is strictly prohibited.

9.0 Contractor’s Key Personnel

9.1 The Contractor shall assign to this contract the following key personnel: Project Foreman.

9.1.1 The Project Foreman shall possess all necessary licenses in conjunction with roofing, roofing material removal, hauling, and disposal, as required by Federal, State, and County Codes and regulations.

Appropriate licenses should be current and in good standing.

9.2 The Contractor shall make no substitutions of key personnel unless the substitution is necessitated by illness, death, or termination of employment. The Contractor shall notify the Contracting Officer within 1 calendar day after the occurrence of any of these events and provide the information required by paragraph 8.3.

9.3 The Contractor shall provide a detailed explanation of the circumstances necessitating the proposed substitutions, complete resumes for the proposed substitutes, and any additional information requested by the

Contracting Officer. Proposed substitutes should have comparable qualifications and requisite licensing to those of the person(s) being replaced. The Contracting Officer will notify the Contractor within 3 calendar days after receipt of all required information of the decision on substitutions. The contract will be modified to reflect any approved changes of key personnel.

10.0 Security and Safety Requirements/Hours of Operation

10.1 Security and Safety Requirements

10.1.1 Access: The Contractor shall notify the Parks Ranger District 48 hours in advance (or as soon as possible) when Contractor personnel (including subcontractors) are to arrive.

10.1.2 General Disruption: General disruption by the Contractor is limited to the immediate work areas.

Contractor products, tools, and/or equipment shall stay within the immediate work areas.

10.1.3 Weapons: No weapons of any kind are allowed on site either in vehicles or on persons.

10.2 Hours of Operation: The Contractor shall deliver products/perform work during regularly scheduled work hours of 0800 (8:00 AM) to 1630 (4:30 PM) Mountain Daylight Time (MDT), Monday through Friday, excluding weekends and observed Federal holidays.

11.0 Definitions

11.1 Contracting Officer (CO): The Contracting Officer is the Government official with the authority to enter into, administer and/or terminate contracts, and make related determinations and findings (Acquisition.gov).

11.2 Contracting Officers Representative (COR): The Contracting Officers Representative is an individual designated and authorized in writing by the Contracting Officer to perform specific technical and administrative functions (Acquisition.gov).

11.3 Statement of Work (SOW): The SOW details what the Contractor must do in the performance of the contract.

Documentation developed under the contract, for example, is specified in the SOW. Security assurance requirements, which detail many aspects of the processes the Contractor follows and what evidence must be provided to assure the organization that the processes have been conducted correctly and completely, may also be specified in the SOW.

11.4 Acceptance: Acceptance means the act of an authorized representative of the Government by which the

Government assumes for itself, or as an agent of another, ownership of existing supplies, or approves specific services as partial or complete performance of the contract.

11.5 Supplies: Supplies means the end items furnished by the Contractor and related services required under this contract.

11.6 Defect: Defect means any condition or characteristic in any supplies or services furnished by the Contractor under the contract that is not in compliance with the requirements of the contract.

Attachments

ATTACHMENT NO. TITLE

1. Appendix I: Vicinity Map – Parks Ranger District Fire Cache

2. Appendix II: Construction Plans

3. Appendix III: Parks Ranger District Fire Cache Photos

4. Appendix IV: Appendix C ‐ Color Palette, FSH 2709.11

Appendix III: Parks Ranger District Fire Cache Photos

SNF SUPPLEMENT 2709.11-2008-2

EFFECTIVE DATE: November 25, 2008 DURATION: This supplement is effective until superseded or removed.

2709_40

FSH 2709.11 – SPECIAL USES HANDBOOK

CHAPTER 40 – SPECIAL USES ADMINISTRATION

Appendix C – Color Palette

This Appendix contains several series of electronically-scanned color chips. Within each series a number of colors have been marked as appropriate for trim, roofs or for use generally (i.e., all other portions of a structure). These colors tend to harmonize with the natural forest setting, but their use is not mandatory; rather, site-specific decisions should be bases on site-specific analyses, and colors should be chosen to blend with the particular location within which they will be used.

District Rangers who wish to use the colors of this electronic palette should note that because of differences in computer monitors and application software the electronic representations will likely not display accurately. For this reason, the electronic representations should be taken only as rough approximations and hard-copy color sheets and/or chips have been distributed to District offices for reference purposes.

Use this handbook of color chips from manufacturers Benjamin Moore and Pratt & Lambert does not constitute an endorsement by the Forest of those manufacturers.

DURATION: This supplement is effective until superseded or removed.

Roof and General (2141-20)

Roof and General (2141-10)

Roof and General (2138-20)

Roof and

(2138-10)

DURATION: This supplement is effective until superseded or removed.

(33-19)

Roof and General (33-18)

Roof and General (33-17)

General (2-19)

(2-18)

DURATION: This supplement is effective until superseded or removed.

(14-18)

Roof and General (14-17)

Roof (11-17)

DURATION: This supplement is effective until superseded or removed.

Trim (5-19)

Trim (5-18)

Trim (5-17)

Trim (21-18)