Section 16670 Lightning Protection

PART I.   GENERAL

1.01    Objective:  To provide safety and protection for the structure, internal & external operational equipment, all contents, and occupants by preventing damage to the structure caused by lightning.

1.02 Standards:  The following specifications and standards of the latest issue form a part of this specification:

 	A. Underwriters Laboratories, Inc. Installation requirements UL 96A  	                                                                
	C. Underwriters Laboratories, Inc. Lightning protection components UL 96

1.03 System Design:  The work covered by this section of the specifications consists of furnishing all labor, materials and items of service required for the completion of a functional and unobtrusive UL listed & certified lightning protection system. System must be designed by a certified Lightning protection Institute Master Designer/Installer 

1.04 Quality Assurance: The lightning protection system shall conform to the requirements and standards for lightning protection systems of UL96A and UL96. Upon completion, application shall be made to the Underwriters Laboratories, Inc. for inspection and issuance of the UL Master Label.

PART II.   PRODUCTS

2.01 Standard: The system to be furnished under this specification shall be the standard 	product of a manufacturer regularly engaged in the production of lightning protection equipment and shall be the manufacturer’s latest approved design. The equipment shall be UL listed and properly UL labeled. All equipment shall be new, and of a design and construction to suit the application where it is used in accordance with accepted industry standards and UL96 requirements.

2.02 Equipment: Provide and install a complete lightning protection system in compliance with the specifications and standards of the most current editions of  Underwriters Laboratories Lightning Protection Standard UL96-A.  A lightning protection contractor who is listed by Underwriters Laboratories, Inc. and a certified Master Installer/Designer by the Lightning Protection Institute shall install the system.

Materials: All lightning protection materials and components shall comply in weight, size and composition with class I UL 96 lightning protection material requirements. All materials shall be UL listed for lightning protection. 

 A. Copper shall be used on UL approved surfaces.

1.	Air terminals shall be a minimum of 3/8” x 12” solid copper.
2.	Cable shall be 32 strands of 17 gauge copper wire weighing 215 lbs. Per 1,000 ft
3.	Connectors and splicers: Cast bronze mechanical with stainless steel bolt and nut. Exothermic type for grounding connections and splicing below grade 
4.	Fasteners shall be copper with stainless steel anchors on masonry locations and stainless steel screws on wood and metal locations
5.	Grounding; 10’ x 5/8” copper clad

B. Aluminum materials shall be used on all HVAC units, parapets, & other roof surfaces that are aluminum or galvanized. If the parapets utilize aluminum coping the roof system shall be completely aluminum except for down conductors & grounding equipment. 

1.	Air terminals shall be a minimum of ½” x 12” solid aluminum.
2.	Cable: No. 1/0 size. 28 strands of 14-gauge cable 115.080 cir. Mils.
3.	Connectors and splicers: Cast aluminum mechanical with stainless steel bolt and nut. Exothermic type for grounding connections and splicing below grade 
4.	Fasteners shall be aluminum with stainless steel anchors on masonry locations and stainless steel screws on wood and metal locations
5.	Grounding; 10’ x 5/8” copper clad

PART III.  EXECUTION

Installation: Lightning Prevention Systems, Inc- West Berlin, NJ (856) 767-7806 or an approved equal experienced installation company that is listed with Underwriters Laboratories and a Certified Lightning Protection Institute master installer/designer shall accomplish the installation. All equipment shall be installed in a neat, workmanlike manner. The system shall consist of a complete conductor network at the roof and include air terminals, connectors, splicers, bonds, down leads and proper ground terminals.

1.	The down conductor system shall utilize structural steel.
2.	Thru roof assemblies shall be utilized to connect roof cable to steel columns.
3.	Steel shall be bonded with a drilled taped ¼” bolted bond plate. 
4.	Mid roof area shall utilize adhesively fastened mounting bases and cable fasteners.
5.	Provide metal bodies of inductance within 6 feet of primary conductor proper bonding.
6.	Cable and roof components shall be concealed from normal ground view. 
7.	Conceal cable from normal view from all exterior locations at grade.
8.	It shall be the responsibility of the lightning protection installer to assure a sound bond to the main water service and to assure interconnection with all other grounds. 
9.	Grounding shall meet the resistance of 25 Ohms or less. Test data shall be submitted to architect. Ground plates, chemical rods, enhancement backfills, and triad configurations may be used to lower ground resistance. 

Coordination:  The lightning protection installer will work with other trades to ensure a correct, neat and unobtrusive installation.  

1.	The roofing contractor will be responsible for sealing and flashing all lightning protection roof penetrations as per the roof manufacturer’s recommendations. 
2.	Roof adhesive shall be approved by roofer. 
3.	Electrical contractor shall furnish and install UL listed surge protectors devices
A. Electric Service entrance
B. Sub panels
C. Incoming wires from cameras or antennas on roof

      
3.03    Inspection and Certification:  Upon completion of the installation, the contractor shall furnish the Master Label issued by Underwriters Laboratories, Inc and an operation and maintenance manual.