Section 26 41 13

Plan No:Lightning Protection for Structures

Project ID:Page 1

  1. General

1.1RELATED REQUIREMENTS.

.1Submittal Procedures:Section 01 33 00

.2LEED Requirements:Section 01 35 18

.3Waste Management and Disposal:Section 01 74 19

.4Electrical General Requirements:Section 26 00 10

.5Grounding and Bonding for Electrical Systems:Section 26 05 28

1.2REFERENCE DOCUMENTS

.1Comply with requirements of CAN/CSA-B72-M87 (R2013), Installation Code for Lightning Protection Systems.

.2Comply with requirements of UL 96, Product Standard for Lightning Protection Components.

.3Comply with requirements of UL 96A, Installation Requirements for Lightning Protection Systems.

.4Comply with requirements of LPI 175 (2014), Standard for the Design – Installation – Inspection of Lightning Protection Systems.

1.3QUALIFICATIONS.

.1The lightning protection system shall be installed by a lightning protection installation firm with a minimum of five years of experience in lightning protection installation.

1.4SUBMITTALS

.1Product Data: Submit manufacturer’s catalog cuts.

.2Shop Drawings: Submit installation drawings for the overall lightning protection system, showing the type, size, and location of all air terminals, conductors, down-conductors, through-wall or through-roof assemblies, bonding connections, and grounding electrodes.

1.5QUALITY ASSURANCE

.1The lightning protection system shall conform to the requirements of the abovereferenced standards and codes.

.2Upon completion of work, the installer shall provide certificationthrough the Lightning Protection Institute or Underwriters Laboratories that the lightning protection system is complete and complies with the applicable standards.

2Products

2.1MATERIALS

.1Materials used shall be new, and shall be listed and labeled in accordance with CSA and CUL requirements. The system components shall be the standard product of aCUL-listed manufacturer engaged in the production of lightning protection equipment.

.2Do not use any combination of materials that forms 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.

.3Materials used in the lightning protection system shall comply with the listed requirements for the structure’s height and use.

.4Copper materials shall not be installed on or in contact with aluminum surfaces, nor surfaces that have been coated with aluminum bearing paints or epoxies.

.5Aluminum materials shall not be installed on or in direct contact with copper surfaces, or where exposed to runoff from copper surfaces nor within 300 mm of the point where the lightning protection conductor comes into contact with the earth.

2.2COMPONENTS

.1Air Terminals: Copper or aluminum, 300 mm minimum length.

.2Cable: Listed copper or aluminum lightning protection conductor.

.3Ground rods: Copper, copper-clad steel, or stainless steel, minimum 12 mm diameter x 3000 mm length.

.4Ground plates: Copper or stainless steel, 0.40 m2 in surface area. 1.5 mm thick.

.5Ground loop: Listed copper lightning protection conductor or bare copper electrical conductor of equivalent size.

.6Fittings and connectors: bolt-pressure, high compression, exothermic weld, or crimp type.

3Execution

3.1INSTALLATION OF SYSTEM

.1Install a full lightning protection system that meets the requirements of the above-listed standards, consisting of air terminals or strike termination devices, interconnecting conductor, bonding connections, down-conductors, and ground electrodes.

.2All equipment shall be installed in a neat orderly manner.

.3Provide air terminals on outside roof edges and corners, along the ridges of pitched roofs and along the perimeter of flat or gently-sloping roofs.

.4Provide air terminals installed at intervals not to exceed 15 mon flat or gently-sloping roof areas greater than 15 min width.

.5Provide conductors to interconnect all air terminals, and in mid-roof areas so that no point on the roof is more than 10 m away from a conductor.

.6Avoid sharp bends or kinks in the conductor.

.7Provide conductor fasteners at intervals no greater than 1.5 m.

.8Provide down conductors and grounding electrodes spaced at an average of no greater than 30 m around the perimeter of the structure.

.9Structural steel may serve as the lightning protection down conductor if it is electrically continuous and 4.8 mm or greater in thickness. Provide connections to structural steel at or near grade and connections to the ground electrodes spaced at an average of no greater than 18 m around the perimeter of the structure.

3.2COORDINATION

.1Work with other trades to ensure a correct and neat installation.

.2Ensure final flashing and sealing of all roof penetrations are in accordance with the roofing manufacturer’s recommendations.

.3Acquire approval for type of lightning protection components adhesive to be used when in contact with roofing materials.

.4The lightening protection system shall be inspected by the installer at substantial completion of the project to ensure system has been installed and able to provide protection as designed.

3.3COMPLETION

.1Submit as-built drawings of the completed lightning protection system.

.2SubmitLPI or UL certification document.

END OF SECTION