Attach C-Green Knob Fire Tower 2024 Rehab SOW Rev 1.pdf

US Forest Service Department of Agriculture (USDA)

Region 8 - Southern Region

National Forests in North Carolina

Appalachian Ranger District, Pisgah National Forest

GREEN KNOB FIRE TOWER REHABILATATION & SECURITY

UPGRADE

Statement of Work and Specifications

NFsNC Engineering T. Heim & C. Davis

February 2024

TABLE OF CONTENTS

1. GENERAL SECTION

1.1. Description

1.2. Location

1.3. Delivery, Storage, and Handling

1.4. Contracting Period

1.5. Sanitary Facilities

1.6. Safety

1.7. Cleanup

1.8. Inspection & Acceptance

1.9. Submittal Procedures

2. TECHNICAL SECTION

2.1. Selective Demolition

2.2. Security Improvements

2.3. Repairs & Prep

2.4. Door Installation

2.5. Paint Tower Deck and Wood Railing

2.6. Painting Requirement

2.7. Bid Option 1: Window Installation

1. GENERAL SECTION

1.1. DESCRIPTION

A. The Purpose of this project is to replace and upgrade the door on Green Knob Fire Tower and installation of a chain-link security barrier to prevent unauthorized access. Limited replacement of deteriorated exterior wood deck and railing components, and painting exterior tower deck and wood railing is also included.

B. A Bid Option is also included for the following:

• Replace and upgrade 15 windows and associated trim and flashing.

C. The Contractor shall furnish all labor, materials, equipment, tools, supplies, supervision, and any other incidentals necessary to perform all work required as listed in the Bid Schedule and Statement of Work.

1.2. LOCATION

A. This project is located on the Appalachian Ranger District in Yancey County, NC. The site can only be accessed by foot via a steep footpath from the Blue Ridge Parkway. A map is included showing the exact location.

1.3. DELIVERY, STORAGE, AND HANDLING

A. The Contractor may store materials and equipment at the work site at their own risk. All materials must be kept in an area designated by the COR and be neat and orderly. All materials and products must be delivered undamaged.

B. The Contractor shall install barricades or tape barriers around all storage areas and areas where overhead work is occurring.

C. Contractor shall maintain the site in a clean & orderly condition throughout the life of the contract.

D. All materials required for painting shall be delivered to the job site in original containers with labels intact and seals unbroken.

E. Store materials in a suitable location to comply with health and safety regulations and manufacturer’s instructions.

1.4. CONTRACTING PERIOD

A. The Period of Performance is 120 days from issuance of Notice to Proceed. Issuance of Notice to Proceed shall be discussed and agreed upon by contractor and Forest Service following award.

1.5. SANITARY FACILITIES

A. There are no restroom facilities available at or near the Green Knob Fire Tower. Contractor shall make appropriate arrangements to maintain sanitary jobsite and work crew conditions.

1.6. SAFETY

A. Contractor shall comply with all applicable OSHA requirements for elevated work platforms, working at heights, and construction work including PPE.

1.7. CLEANUP

A. The Contractor shall leave the site clean and ensure no trash or debris is left behind.

B. Upon completion of work, the contractor shall remove all surplus material and debris from the job site.

C. Contractor shall use a magnetic roller to retrieve any nails or metal that fall to the ground.

D. No scrap material shall be left behind unless agreed upon in writing by the Contractor and COR.

1.8. INSPECTION & ACCEPTANCE

A. There will be 3 key phases of inspection.

1. The Contracting Officer’s Representative (COR) shall inspect the existing structural window and door framing after existing window and door removal, and before new windows and the door are installed.

2. The COR shall inspect any necessary repairs after completion, and before new window frames and windows are installed.

3. The COR shall make a final inspection of all work including the chain-link security panel and recommend acceptance to the Contracting Officer if the work meets all requirements and specifications.

B. Work not meeting specifications shall be re-worked without compensation to the contractor until specifications have been met.

1.9. SUBMITTAL PROCEDURES

A. Submittals shall be furnished before fabrication or installation occurs. All submittals shall be evaluated and either approved or rejected by the COR within 10 days after their receipt. Submittals may be supplied to the COR digitally in PDF format via E-mail. Window submittals shall include casing and trim color specified by the contract drawings and specifications.

B. If the Contractor Intends to provide or install an item that is an "or equal" or differs from that which Is specified or shown on the drawings, he/she shall submit all product data, revised drawings or new drawings to the COR for approval.

C. The contractor shall submit the manufacturer's description of all "or equals" proposed in lieu of name brands specified. This description shall Include:

1. Product name and model number

2. Manufacturer

3. Product Description

4. Technical Data

D. The contractor shall be required to furnish the following to the COR prior to commencing any work that relates to a respective submittal:

1. Wood Bracing and Galvanized Chain-Link Security Panel with Angle Stock Framing: Shop Drawing(s)

2. Metal Clad Foam Core Door & Hardware: Drawing & Product Information

3. Aluminum Framed Lexan Polycarbonate Windows: Drawing and Product Information (If Option Exercised)

2. TECHNICAL SECTION

2.1. SELECTIVE DEMOLITION

A. General:

1. This work shall consist of the removal and satisfactory disposal of existing windows, window frames, window trim, door, and associated components, as well as exterior wood deck and railing boards to be replaced. Selective demolition of existing windows, window frames, window trim, and associated components shall only be performed if this Bid Option is exercised.

B. Execution:

1. The Contractor shall execute the demolition work in a way not to damage adjacent structural members, trim, or property.

2. All demolition debris shall become the property of the Contractor. All demolition refuse and construction debris shall be removed from Government Lands and shall be disposed of in accordance with all local, state, and federal regulations.

2.2. SECURITY IMPROVEMENTS

A. General:

1. The work shall consist of the installation of a galvanized metal chain-link security panel framed with steel angle stock on wood bracing to prevent unauthorized access to the deck of the fire tower.

B. Execution:

1. Install triangular pressure treated wood brace firmly and securely anchored to the fire tower metal base structure and wood railing system to match the other existing wood braces on the tower. The brace shall be anchored to the existing structure with galvanized or stainless-steel carriage bolts and appropriate fastening hardware. Paint wood brace to match existing exterior wood components.

2. Firmly and securely anchor galvanized metal chain link panel to the undersides of the wood braces and the tower structure with galvanized or stainless-steel threaded bolts penetrating the full thickness of the wooded braces and that cannot be tampered with or removed from the tower stairs.

C. Products

1. Wood bracing shall be new Spruce, Pine, or Fir with a minimum grade of #2 pressure treated to AWPA UC3b standards.

2. Hardware to secure wood bracing shall be hot-dip galvanized carriage bolts and exterior grade timber screws to match the existing wood bracing on the tower.

3. Security panel shall be chain-link, 2” mesh x 9 gauge to desired height. Manufactured from the highest quality galvanized wire, or vinyl coated. In accordance with ASTM-A392-81-Class 1. All fittings are made from first grade malleable iron, pressed steel or aluminum. Tie wire to be 7 gauge aluminum. The support frame shall be constructed of 1/8-inch A-36 steel angle stock primed and painted to match existing angle on the tower.

2.3. REPAIRS & PREP

A. General:

1. After demolition, and BEFORE INSTALLING NEW WINDOWS AND DOOR, FLASHING OR TRIM, the COR and the Contractor shall inspect the Tower framing for loose nails, water damage, and rot.

B. Execution

1. If repairs are necessary and approved by the COR, the Contractor shall make any necessary repairs in accordance with the Section 2.3 and all state and local building codes.

2. If repairs are necessary and pre-approved by COR, ensure cuts are square and/or angles are correct, closely fitted, and accurately set level and/or plumb to required lines and levels. Secure in place with fasteners ensuring wood does not split or bust.

3. Any new material used for this project shall match the existing material dimensions as close as possible.

4. The contractor shall use appropriate size fasteners with an appropriate coating for the application.

The contractor shall use 8d fasteners for plywood and 1x material. If framing members are to be replaced, the contractor shall use coated 16d nails. Any fasteners exposed to rain & moisture must be galvanized.

C. Products

1. Structural framing and repairs to the exterior deck and railing shall be Spruce, Pine, or Fir with a minimum grade of #2, pressure treated to meet AWPA UC3b standards. All wood products must be graded and stamped by a certified, accredited inspector and have the appropriate grade trademark of the Association.

2.4. DOOR INSTALLATION

A. General:

1. The COR shall inspect the Tower Framing after repairs are made and prep work is completed, PRIOR TO installation of door and trim. The existing door with approximately dimensions of 36“ x 79“ and locking hardware is to be replaced. The contractor is responsible for measuring the door frame for exact dimensions.

B. Execution

1. Door must be in new condition and the Contractor must provide the COR with the manufacturer’s printed literature for the product and obtain COR approval prior to ordering.

2. Door framing and trim must be level and square as possible.

3. Door must be installed per manufacturer’s instructions.

4. All cracks and joints must be sealed/caulked. Holes must be filled with an exterior nail hole filler and sanded before painting.

5. All PVC trim and metal flashing must be primed with an appropriate primer and then painted with two coats of paint by brush and/or roller to match existing.

6. Painting must be done in accordance with Section 2.6.

C. Products

4. Trim Sealant shall be exterior rated, paintable, and approved for direct sunlight exposure. The color shall match the surface being applied to as closely as possible. Sealant must be approved by the COR prior to purchase/use.

5. Filler shall be sandable, paintable, and approved for exterior use.

6. The Contractor shall provide the COR color samples for the paint for approval prior to purchasing/ordering.

7. Door shall be exterior grade steel clad foam core, with a 1/4” UV resistant LEXAN polycarbonate window with trim and mullions appropriate match to existing windows profiles.

2.5. PAINT TOWER DECK AND WOOD RAILING

A. General:

1. Paint the exterior of Tower including cleaning, prep, filling holes, replacing caulk/sealant, and clean-up.

B. Execution:

1. Existing loose paint must be removed as part of the prep work.

2. Painting must be done in accordance with Section 2.6.

3. Paint must be applied by brush and/or roller. No spraying.

4. After prep, apply 1 coat of dedicated primer per manufacturer’s instructions.

5. After priming, apply 2 coats of paint per manufacturer’s instructions.

C. Products

1. Paint shall be Benjamin-Moore Aura exterior paint, Sherwin-Williams Emerald exterior paint, or equivalent top quality paint that is long lasting, fade resistant, cleaner over time, with high adhesion properties. The color shall match the existing color of the tower as closely as possible, and the paint sheen shall be Satin. The Contractor shall provide a color sample to the COR for approval prior to painting.

2. Primer shall be a dedicated exterior wood primer if the material is not pre-primed.

2.6. PAINTING REQUIREMENT

A. Quality Assurance

1. All paints, sealers, and primers shall be furnished in original, unopened containers bearing a label to include the manufacturer's name, type of paint or stain, manufacturer's stock number, color, and instructions for application.

2. Environmental Requirements

a) Comply with the manufacturer's recommendations as to environmental conditions under which coating and coating system can be applied.

3. Do not apply paint in areas where dust is being generated.

B. Protection

1. Cover or otherwise protect finished work of other trades and surfaces not being painted.

2. Copper, bronze, chromium plate, nickel, stainless steel, aluminum, and monel metal shall not be painted or finished unless otherwise specified.

C. Execution

3. Preparation of Surfaces:

4. Clean surfaces to be painted. Spaces in which painting will be done shall be broom-cleaned and dust-free.

5. Remove all loose paint where cracking, chipping, bubbling, and peeling has occurred.

6. Remove soil, prints, stains, and adhered materials prior to beginning of work.

7. Meet requirements of other portions of Specifications for preparation of specific items.

D. Application

1. No paint shall be applied when the temperature is below 40 degrees, or when those temperatures are likely to be reached within 48 hours.

2. All paint shall be applied in accordance with the manufacturer's recommendations unless otherwise directed.

3. All coats shall be thoroughly dried before applying succeeding coats. Comply with manufacturer's recommendation for drying time between succeeding coats.

4. Finish coats shall be smooth, free of brush marks, streaks, laps, and skipped or missed areas.

5. Leave all parts of moldings clean and true to details with no undue amount of paint in corners and depressions.

6. Apply paint with suitable brushes or rollers. Spaying equipment will not be allowed. The rate of applications shall not exceed that as recommended by the paint manufacturers for the surface involved.

7. Keep brushes and rollers clean, dry, free from contaminates, and suitable for the finish required.

8. Make edges of paint adjoining other materials or colors straight and sharp with no overlapping.

E. Cleaning

1. Touch up and restore finish where damaged.

2. Remove spilled, splashed, or splattered paint from all surfaces.

3. Do not mar surface finish of item being cleaned.

2.7. BID OPTION 1: WINDOW INSTALLATION

A. General:

2. The COR shall inspect the Tower Framing after repairs are made and prep work is completed, PRIOR TO installation of window trim and panes. The are 15 windows to be replaced, and each one is approximately 36 “x 48”. The contractor is responsible for measuring the windows, window frames and door frame for exact dimensions.

B. Execution

7. Windows must be in new condition and the Contractor must provide the COR with the manufacturer’s printed literature for the product and obtain COR approval prior to ordering.

8. Window framing and trim must be level and square as possible.

9. Windows must be installed per manufacturer’s instructions and must be sealed on all sides with CRL polyurethane construction sealant or approved equivalent.

10. All cracks and joints must be sealed/caulked. Holes must be filled with an exterior nail hole filler and sanded before painting.

11. All PVC trim and metal flashing must be primed with an appropriate primer and then painted with two coats of paint by brush and/or roller to match existing.

12. Painting must be done in accordance with Section 2.6.

13. Flashing must be installed above each window per state & local building code. Continuous pan flashing shall be installed over the sill as indicated with a 1/8-inch drip edge overhang. Flashing color shall match window trim or sill color as closely as possible.

C. Products

8. Windows shall visually match existing windows as closely as possible and be 1/4” UV resistant LEXAN polycarbonate. The frame shall be black matte powder coated aluminum.

9. Window trim and sills shall be PVC, used with the following accessories:

a) Fasteners: Stainless steel or hot-dip galvanized, with thin shank, blunt point, full round head as recommended by the manufacturer.

b) Adhesives: Non-toxic, odorless, UV stable, water-based PVC cement.

c) Sealants: Urethane, polyurethane or acrylic based sealants without silicone.

10. Window trim must be fully sealed to keep out moisture.

11. Flashing shall be aluminum or galvanized and match the surrounding paint colors as closely as possible.

12. Trim Sealant shall be exterior rated, paintable, and approved for direct sunlight exposure. The color shall match the surface being applied to as closely as possible. Sealant must be approved by the COR prior to purchase/use.

13. Filler shall be sandable, paintable, and approved for exterior use.

14. The Contractor shall provide the COR color samples for the paint for approval prior to purchasing/ordering.