CARL_314032A_SOW.pdf

CARL SANDBURG HOME

National Historic Site

SCOPE OF WORK

INSTALL AND REPAIR LIGHTNING PROTECTION SYSTEM

81 Carl Sandburg Ln.

Flat Rock, NC 28731

PMIS# 314032

STATEMENT OF WORK PART A – GENERAL INFORMATION

A.1 INTRODUCTION – Carl Sandburg Home National Historic Site located at 81 Carl Sandburg Ln, Flat Rock NC, 28731 has a requirement to install a lightning protection system on three buildings in the park’s barn complex and upgrade the existing system on the Main House.

A.2 BACKGROUND – Carl Sandburg Home National Historic Site is in an area with frequent severe storms. This project will add a lightning protection system on three adjacent buildings in the goat barn complex area (the goat barn, milk house, and horse barn). Additionally, the existing lightning protection system at the Main House will be upgraded to meet current standards as described in Section C of this scope of work.

All three buildings within the goat barn complex are historic structures. Photographs of each building and a location map are attached to the scope of work in Appendix A.

• The goat barn built circa 1900 is a large 80-ft x 44-ft rectangular, side-gabled, frame barn with a central paired-door entry, a gabled cupola, a hayloft hood, and side and rear shed additions. The barn is actively used to house dairy goats and the building is supplied with all utilities: electrical, water, and sewer.

• The milk house is a 14 ½-ft x 17 ½-ft x 16 ½ -ft T-plan, rough-faced concrete block building with a cross-gabled roof and exposed end rafters. The building has a gabled, covered pathway connected to the milking barn and two entries on the east façade. A third entry faces north and opens onto a pasture.

• The horse barn is a 20 ½-ft x 31-ft x 19-ft rectangular, one-and-one half story, wood-frame, front gable barn with a steeply pitched, aluminum roof and a full-size entry for the hayloft, which is accessed by an exterior ladder. The barn is clad in weatherboard and has an aluminum roof vent. A stone silo abuts the north elevation.

The Sandburg Home is a three-story antebellum home built in 1838. The historic lightning protection system on the Main House is still functional, but a previous assessment by a lightning protection professional noted additional upgrades were needed to the system to bring it up to current code requirements.

A.3 SCOPE OF WORK – Vendor will provide all parts, labor, equipment, material, training, and supervision to adequately install and/or upgrade the lightning protection systems. All lightning protection installation and repairs shall be in full compliance with NFPA 780, NFPA 70, NFPA 70E, UL 96 and 467, and AFI 32-1065. In the event of conflict between specific details in codes, the most stringent code requirement shall comply.

PERIOD OF PERFORMANCE PART B

B.1 The contractor shall commence work under this contract within ten (10) days after the date of receipt of the Notice to Proceed. Removal and cleanup shall be completed within forty five (45) days of the Notice to Proceed.

STATEMENT OF WORK PART C – WORK REQUIREMENTS

C.1 Task to be accomplished:

The project consists of two phases outlined below: installing a new lightning protection system at the barn complex and updating the lightning protection system at the Main House. Since all work is on historic structures, additional care is required to minimize disturbance to all surfaces and to minimize the number of penetrations into the historic fabric of the structures. All cabling installed shall be located to minimize the visibility of the cables.

Performance Requirements: Comply with LPI 175 requirements for Class I buildings. Install lightning protection components and systems according to LPI 175 codes and requirements.

Lightning Protection Components, Devices, and Accessories: Listed and labeled by a qualified testing agency as complying with UL 96 and marked for intended location and application.

Install a new lightning protection system on the goat barn, milk house, and horse barn:

• The lightning protection system will be bonded to all utilities entering the structures. A surge protector shall be added to the electrical panel in the goat barn. All installed devices shall meet UL 96/ 1449 4th edition standards.

• Eight 10-inch aluminum air terminals shall be attached to the roof of the barn, rods would be installed within 2' of the end of the building and no more than 20' apart. Rods shall be placed on each vent (the high points).

• Three 10-inch aluminum air terminals shall be attached to the roof of the horse barn

• Three 10-inch aluminum air terminals shall be attached to the roof of the milk house including one on the roof connecting the milk house to the goat barn.

• Two grounding rods shall be driven into the ground at corners of each building (6 total) which will attach to the wires on the protection system (the corners where they would be located shall be approved by park management to minimize visibility and the potential from damage caused by goats)

• Conductor cable shall be installed on the roof connecting the air terminals to the grounds.

Conceal conductors within normal view from exterior locations at grade within 200 feet of building. Comply with requirements for concealed installations in LPI 175. Down conductors shall be installed along side of downspouts with the intention to conceal the conductor as much as possible.

Fasteners on the roof will be adhesive type and anchored type on the face of the building.

Fasteners on the roof will be adhesive compatible with roof materials.

All work shall comply with applicable codes and regulations.

Upgrade lightning protection system at the Main House:

The existing lightning protection system on the main house is functional but doesn’t comply with current code requirements.

• Add a surge protector to the electrical panel. All installed devices shall meet UL 96/ 1449 4th edition standards.

Install one 10-inch aluminum air terminal on each of the three chimneys along the ridge of the house.

The air terminals shall be connected to the existing conductor wires on the roof, which connect to existing ground rods.

Ensure all new and existing conductor cables are properly connected and grounded.

All work shall comply with applicable codes and regulations.

C.2 EXECUTION

C.2.1 INSTALLATION

• Install lightning protection components and systems according to LPI 175 codes and requirements.

• Install conductors with direct paths from air terminals to ground connections. Avoid bends less than 90 degrees and 8 inches in radius and narrow loops.

• Conceal conductors within normal view from exterior locations at grade within 200 feet of building. Comply with requirements for concealed installations in LPI 175. Down conductors shall be installed along side of downspouts with the intention to conceal the conductor as much as possible.

1. Install conduit where necessary to comply with conductor concealment requirements.

2. Air Terminals on Single-Ply Membrane Roofing: Comply with adhesive manufacturer's written instructions.

• Fasteners on the roof will be adhesive compatible with roof materials.

C.2.2 CONNECTIONS

• Aboveground concealed connections, and connections in earth or concrete, shall be done by exothermic welds or by high-compression fittings listed for the purpose.

• Aboveground exposed connections shall be done using the following types of connectors, listed and labeled for the purpose: bolted connectors or crimp.

• Bonding Straps and Jumpers: Install in locations accessible for inspection and maintenance, except where routed through short lengths of conduit.

• Bonding to Structure: Bond straps directly to basic structure, taking care not to penetrate any adjacent parts.

C.3 SUBMITTAL INFORMATION

- Submittal information required prior to the pre-construction meeting and mobilization:

1) Designation of Project Superintendent

2) Project Schedule

3) Accident Prevention Plan/Safety Plan

4) Construction Site Plan

a. Equipment Placement/Storage Plan

b. Waste Management Plan

c. Routes of Travel Plan

- All submittal information shall be reviewed by COR prior to contractor ordering and installing materials.

- Provide Product Data: For each type of product.

- Provide Shop Drawings:

1) Include layouts of the lightning protection system, with details of the components to be used in the installation.

2) Include raceway locations needed for the installation of conductors.

3) Details of air terminals, ground rods, ground rings, conductor supports, splices, and terminations, including concealment requirements.

4) Include roof attachment details, coordinated with roof installation.

5) Calculations required by NFPA 780 for bonding of metal bodies.

- Qualification Data: For Installer – Firm with at least five years of successful installation experience with projects utilizing lightning protection system similar to that required for this project.

- Product Certificates: For each type of roof adhesive for attaching the roof-mounted air terminal assemblies, approved by the roofing-material manufacturer.

- Field quality control reports.

C.4 CLOSEOUT SUBMITTALS AND FINAL INSPECTION

- Maintenance Data: For lightning protection system to include in maintenance manuals. Include the following:

a. Dimensioned site plan showing dimensioned route of the ground loop conductor and the ground rod locations.

b. A system testing and inspection record, listing the results of inspections and ground resistance tests, as recommended by NFPA 780, Annex D.

- Completion Certificate: LPI Certification

- When all work of this contract has been completed and the cleanup performed, the COR will make the final inspection after receipt of a written request by the contractor. When all errors and omissions disclosed by the final inspection have been corrected, acceptance will be in writing, but until such acceptance, the contractor shall be responsible for the work covered by this contract.

C.5 HEALTH AND SAFETY

All work performed on government property will be accomplished in accordance with OSAH, EPA, Federal, State, and local regulations and requirements. Prior to starting work, the contractor shall submit an Accident Prevention Plan/Safety Plan for approval. The safety plan must address at a minimum the following:

• Heavy Equipment Operations

• Public/visitor Safety (barriers/signage, etc.)

• Personal Protective Equipment (PPE) to be used

• Emergency Response Protocols

• Personnel Training Requirements

General Comments pertaining job:

• Contractor shall supply their own trash/waste removal and shall remove all packaging, crates, and/or other waste materials.

• Contractor shall provide proof of insurance prior to beginning work to cover remediation of any damage caused by the project.

STATEMENT OF WORK PART D – SUPPORTING INFORMATION

D.1 Place of Performance –81 Carl Sandburg Ln., Flat Rock, NC 28731

D.2 Period of Performance – The Contractor shall perform all work during normal business hours

(Monday-Friday 7:30-5:00). The park will need at least 1-week notice before work begins. The start date must be approved and coordinated with the park contact who can be reached via the following contact information:

Jamie Mahan Acting Program Manager for Resources and Facilities Carl Sandburg Home National Historic Site 81 Carl Sandburg Lane Flat Rock, NC 28731 Mobile: 828-595-0274 jamie_mahan@nps.gov

D.3 SPECIAL CONSIDERATIONS

D.3.1 Contractor Furnished Materials – All labor, materials, equipment to perform the job.

When “furnish”, “provide”, “install”, or similar term is used it shall mean a complete installation, ready for use. The vendor shall supply all parts, equipment, material and labor to perform the work described above. The work will include all items as described in the Scope of Work listed above.

D.3.2 Qualifications of Key Personnel – Contractor’s employees should be knowledgeable of standards associated with this type work.

D.3.3 Supervision/Communications. At all times during the performance, the Contractor’s

Superintendent (if applicable) shall be available by cellular phone. Prior to beginning any work, the Contractor shall supply the COTR with the telephone number for the Superintendent. The Contractor’s “Competent Person” that meets OSHA training guidelines, is capable of making decisions and acting on behalf of the Contractor shall be physically located on site at all times during performance of the contract. If the Contractor’s Competent Person is absent from the job site for an extended period of time, the COTR may send all Contractor/sub-contractor employees off the job.

D.3.4 The Contracting Officer’s Technical Representative (COTR) is responsible for the inspection of the work called for in this job. The Contracting Officer’s Technical Representative will be identified in the task order by name, telephone number and location.

Inspections made by the COTR are for the sole benefit of the Government and do not relieve the Contractor of any quality control responsibilities.

D.3.5 Verification of Dimensions – The Contractor shall visit the job site to thoroughly familiarize themself with all the details of the work and working conditions. The Contractor shall also verify all dimensions in the field and shall advise the Contracting Officer of any discrepancy before performing any work. The Contractor shall be specifically responsible for the coordination and proper relation of his work to the building, structure, phasing and ensure the safety of employees and workmen.

D.3.6 Smoking Policy. The Contractor shall not allow smoking in any building. The

Contractor shall ensure employees smoke only in designated outdoor areas, 50 feet away from buildings.

D.3.7 Parking/Traffic Regulations. The Contractor shall not park on grassy areas unless approved by the COTR and the Contractor agrees to restore areas back to Park standards.

Drivers should be particularly concerned with pedestrian traffic. Posted speed limits and all other traffic controls are to be observed by operators at all times.

Appendix A

Location Map

Aerial photograph of goat barn complex

Goat Barn photograph showing approximate locations for some of the lightning rods.

Milk House photographs showing approximate locations of some of the lightning rods. Breezeway is attached to the goat barn.

Horse Shed photograph with stone silo and approximate locations of some of the lightning rods.

Carl Sandburg Home