Sec_26_4100_LIGHTNING_PROTECTION.pdf

OANG 180th Fighter Wing - Swanton, Ohio URS

WYTD 079032 - Construct ACA Alert Crew Quarters Facility URS Project No. 14578137

1 December 2015 Type B Services - B3 Submission

LIGHTNING PROTECTION SYSTEMS 264100 - Page 1 of 4

SECTION 26 4100

LIGHTNING PROTECTION SYSTEMS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes lightning protection systems components including, but not limited to, the following:

1. Air terminals.

2. Bonding plates.

3. Conductors.

4. Connectors.

5. Fasteners.

6. Grounding rods.

7. Splicers.

B. Related Work Specified Elsewhere:

1. Raceways used for lightning protection system conductors are specified in Division 26

Section “Raceways”.

2. Grounding is specified in Division 26 Section “Grounding”.

1.2 REFERENCES

A. Applicable Standards: Comply with applicable requirements of the following standards.

1. American National Standards Institute (ANSI):

a. C2 - National Electrical Safety Code.

2. National Fire Protection Association (NFPA):

a. 780 - Lightning Protection Code.

b. 70 - National Electrical Code.

3. Underwriters Laboratories (UL):

a. 96 and 96A - Lightning Protection Components.

4. Lightning Protection Institute (LPI):

a. 177 - Inspection Guide for LPI Certified Systems.

1.3 SUBMITTALS

A. Refer to Division 01 and Division 26 Section “Basic Electrical Requirements” for administrative and procedural requirements for Submittals.

B. Includes, but not limited to, the following:

1. Product data for each type of product specified, including roof adhesive where used.

2. Shop Drawings detailing lightning protection system including, but not limited to, air terminal locations, bonding locations, raceways, conductor routing, connections, and grounding.

LIGHTNING PROTECTION SYSTEMS 264100 - Page 2 of 4

1.4 SEQUENCING AND SCHEDULING

A. Coordinate installation of lightning protection system with the installation of other building systems and components, including electrical wiring, supporting structures, building materials, roof, and metal components requiring interface with lightning protection systems.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Subject to compliance with requirements, provide products by one of the following:

1. A-C Lightning Security Inc.

2. Approved Lightning Protection Co., Inc.

3. Carl Bajohr Co., Inc.

4. East Coast Lightning Equipment.

5. Heary Bros. Lightning Protection.

6. Independent Protection Co., Inc.

7. Robbins Lightning Protection Co.

8. Thompson Lightning Protection, Inc.

2.2 LIGHTNING PROTECTION SYSTEM COMPONENTS

A. Provide lightning protection system materials and components, that comply with manufacturer's standard design, in accordance with published product information. Provide air terminals, bonding plates, conductors, connectors, conductor straps, fasteners, grounding rods, rod clamps, splicers, and other components required for a complete system that meets UL 96A standards.

1. Type of Metal for air terminals and cables: aluminum. Provide NFPA 780 Class I materials. Air terminal heights as indicated.

2. Air Terminals for roof mounting: Provide units with bases that shall be attached with adhesive provided by electrical contractor. The adhesive shall be approved by the roof membrane manufacturer. Air terminals on metal roofs shall have mounting hardware compatible with the roof.

3. Ground rods: 3/4-inch minimum diameter by 10 feet long, copper clad steel with a minimum of 27% of the rod weight in the copper cladding.

4. Conductor supports shall be attached with adhesive (provided by electrical contractor) to the roof. The adhesive shall be approved by the roof membrane manufacturer. Conductor supports on the metal roofs shall have mounting hardware compatible with the roof.

5. Provide bonding conductors as required by NFPA 780.

PART 3 - EXECUTION

3.1 INSTALLATION OF LIGHTNING PROTECTION SYSTEMS

A. Install lightning protection systems as indicated, in accordance with Equipment manufacturer's written instructions, and in compliance with applicable installation standards specified above.

Suitably protect cable and air terminals from damage during construction.

B. Install conductors with direct paths from air terminals to ground connections avoiding sharp bends (minimum radius = 8 inches and no bend shall be less than 90 degrees) and narrow loops.

Where indicated, run conductors in nonmetallic PVC raceway, Schedule 40, with a minimum elbow radius of 8 inches.

LIGHTNING PROTECTION SYSTEMS 264100 - Page 3 of 4

C. Air terminals shall be installed within 2 feet of all ends, edges, and corners of the building.

D. Splices and Clamps: Install cable with as few joints as possible. Use approved exothermic welded connections for all underground conductor splices and all underground connections between conductors and ground rods. Use approved mechanical compression connections for all above grade connections.

E. Provide Bimetallic Connectors when joining copper to aluminum conductors.

F. Ground Rods:

1. Install rods as indicated by driving and not by drilling or jetting.

2. Drive rods into unexcavated portion of the earth where possible.

3. Where rods must be installed in excavated areas, drive rods into earth after compaction of backfill is completed.

4. Drive to a depth such that top of rod will be approximately 18 inches below final grade, or subgrade, and connect to main grid ground cable.

3.2 CORROSION PROTECTION

A. Use no combination of materials that may form an electrolytic couple of such nature that corrosion is accelerated in the presence of moisture, unless moisture is permanently excluded from the junction of such metals. Where unusual conditions exist that would cause deterioration or corrosion of conductors, use conductors with suitable protective coatings. Protect cable at all points where cable leaves concrete by wrapping rubber tape on 2 inches either side of the plane formed by the finished concrete surface.

3.3 GROUNDING AND BONDING

A. Provide equipment grounding and bonding connections sufficiently tight to assure permanent and effective grounds and bonds.

3.4 FIELD QUALITY CONTROL

A. Perform inspections of the lightning protection system installation in accordance with LPI-177, "Inspection Guide for LPI Certified Systems." Provide Engineer with one copy of LPI-177 and retain one copy at the Project Site throughout construction for reference.

B. Provide UL inspection and delivery of UL Master Label to Owner.

END OF SECTION 26 4100

LIGHTNING PROTECTION SYSTEMS 264100 - Page 4 of 4

This page intentionally left blank.