SECTION 16620

LIGHTNING PROTECTION SYSTEM

PART 1 GENERAL

1.1	DESCRIPTION

A.	Description of Systems: A lightning protection system shall be placed on the structure as described herein, by experienced installers in compliance with provisions of Code for Lightning Protection Systems as adopted by the Lightning Protection Institute (LPI), National Fire Protection Association and Underwriters' Laboratories. All equipment to protect the new building against damage by lightning shall be included whether or not specifically called for herein. Installer shall be LPI certified, master or journeyman in accordance with LPI standards. An LPI label for the system and a witness of grounding form required by LPI (Form 175-A) shall be required.

B.	Materials shall comply in weight, size and composition with the requirements of Underwriters' Laboratories and the National Fire Protection Code relating to this type of installation, and shall be U.L. Labeled.

C.	All materials other than air terminal and conductors shall be heavy duty cast type. (No stamped metal materials are acceptable.)

1.2	QUALITY ASSURANCE

A.	Manufacturers: Firms regularly engaged in manufacture of lightning protection of types and ratings required, whose products have been in satisfactory use in similar service for not less than 5 years.

1.	Thompson Lightning Protection, Inc.

2.	Heary Brothers Lightning Protection

3.	Independent Protection Company

B.	Installer: Firms with at least five (5) years of successful installation experience on projects with electrical installation work similar to that required for the project.

1.	Maxwell Lightning Protection of Florida

2.	Jasper Thompson Lightning Protection

3.	Other qualified installers.

1.3	SUBMITTALS

A.	Shop Drawings and Product Data:

1.	Shop Drawings:

a.	Shop drawings shall be submitted and reviewed before work is started. Drawings shall include full layout of cabling and points, and connections.

b.	Submit shop drawings marked with roofing manufacturer's stamp of approval. Failure to do so will result in rejection of submittal.

2.	Product Data: Product data shall be submitted on all equipment to show compliance with this Section of the Specifications and shall include manufacturer's written recommendations for installation.

PART 2 PRODUCTS AND INSTALLATION

2.1	AIR TERMINALS

A.	Air terminals shall be solid copper and shall have proper base support for surface on which they are attached, and shall be securely anchored to this surface. Terminals shall project a minimum of 10" above top of object to which attached.

2.2	CONDUCTORS

A.	Roof conductors shall consist of copper complying with the weight and construction requirements of the Code, and shall be coursed to interconnect with air terminals, and in general, provide a two-way minimum path to ground. The angle of any turn shall not exceed 90°, and shall provide an approximately horizontal or downward course. Where provided down conductors shall be copper, and shall be installed in PVC conduit and hidden within the structure. Radius of bends shall not be less than 8 inches.

2.3	FASTENER

A.	Conductor fasteners shall be of the same material as the conductor, having ample strength to support conductor. Where fasteners are to be mounted in masonry's or structural work, they shall be furnished to the Masonry or Structural Contractor so they may be installed during construction of the project.

2.4	GROUND CONNECTIONS

A.	Ground connections shall be made in accordance with requirements of all applicable codes. Ground rods shall be placed a minimum of two (2) feet from building foundations. In addition to above artificial grounds, one down conductor of each two-path system shall be connected to water piping system with approved water pipe type strap connector. All ground rods shall be sectional, ⅝" x 30' minimum copperweld type.

PART 3 EXECUTION

3.1	INSTALLATION

A.	Installation shall be made in an inconspicuous manner with conductors coursed to conceal equipment as much as possible. down conductors shall be concealed within structure, and shall be run in 1" PVC conduit. All metallic equipment within 6 feet of any lightning conductor shall be bonded to conductor.

B.	Bond to main service electrical ground.

C.	Bond to incoming metallic telephone, communications, and TV cable surge protectors.

D.	Provide access boxes at ground rods to permit inspection of connections. Boxes may be reinforced plastic body and cover in landscape areas and shall be concrete with cast iron covers in paved areas.

END OF SECTION