1 - GENERAL
Objective: To provide safety for the building and occupants
by eliminating damage to the entire structure caused by
lightning, surges and other related occurrences. These
specifications apply to Class 1 Type Structures (Buildings
below 75 feet in height) as defined by the standards listed
1.2. Standards: The following specifications and standards
are part of this specification:
Underwriters Laboratories, LLC, (UL)
Installation Requirements for Lightning Protection Systems,
B. Underwriters Laboratories, LLC, (UL)
Lightning Protection Components, UL 96
C. National Fire Protection Association, (NFPA)
Standard for the Installation of Lightning Protection
Systems, NFPA 780
D. Lightning Protection Institute, (LPI)
LPI Standard of Practice, LPI-175
1.3. System Design: The work covered under this section
of the specifications consists of furnishing labor, materials
and services required for the completion of a functional
and inconspicuous as practical lightning protection system
(LPS) approved by the architect and owner. The design
of this system is to be in strict accordance with this
section of the specifications.
1.4. Post Installation Submittals: Complete design as-built
drawings showing final location of all grounding, roof
conductors, down conductors and air terminals shall be
submitted to the architect at the completion of the work.
1.5. Quality Assurance: The LPS shall conform to the requirements
and standards for LPS(s) in accordance with UL, NFPA and
LPI. Upon completion of the installation, application
shall be made to the Underwriters Laboratories, LLC for
issuance of the UL Master Label Certification. Upon receipt
of the UL Master Label Certification from Underwriters
Laboratories, said document will be presented to the owner
or the owner’s representative.
2 – PRODUCTS
2.1 Standard: The system 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. All equipment shall be UL listed and properly
UL labeled. All equipment shall be new (except for the
existing verified correct LPS components if being reused),
and of a design and construction to suit the application
where it is to be used in accordance with accepted industry
standards and in accordance with UL, NFPA and LPI requirements.
2.2 Equipment: Provide and install a complete LPS in compliance
with the specifications and standards of the most current
editions of the UL-96A, NFPA-780 and LPI-175. The system
shall be installed by a lightning protection contractor
who is listed by the Underwriters Laboratories, LLC and
a Lightning Protection Institute Certified Master Installer/Designer.
Independent Protection Co., Inc. – Goshen, Indiana
Ph: 800.860.8388 ~ Email: firstname.lastname@example.org
INSTALLER: Classic Lightning Protection, Inc. - Payson,
Ph: 877.474.1727 ~ Email: email@example.com
Materials: All lightning protection materials and components
shall comply in weight, size and composition with UL 96,
NFPA-780 and LPI-175 lightning protection material requirements
for this type of structure. All materials shall be copper/bronze
or aluminum. Aluminum components shall be used in locations
where system components are mounted to aluminum, galvanized
or galvalum surfaces to avoid galvanic corrosion of dissimilar
metals. All bolts, nails and screws are to be stainless
steel. Class 1 materials shall be used on structures not
more than 75 feet in height. Class 2 materials shall be
used on structures exceeding 75 feet in height.
new material requirements for Class 1 structures are as
Conductor: IPC #32S, No. 2 Size, 215 pounds per 1000’,
32 strand of 17 gauge wire, 65,600 circular mils.
Copper Air Terminals: IPC #330B, 3/8” diameter
by 24” long solid copper.
Aluminum Conductor: IPC #A28, No. 1/0 Size, 130 pounds
per 1000’, 28 strand of 14 gauge wire, 115,080
Aluminum Air Terminals: IPC #A331B, 1/2” diameter
by 24" long solid aluminum.
Grounding Electrodes: IPC #579, 3/4” x 10’
long copperweld rod or IPC #589 18" x 18"
20 gauge copper plate.
Fittings and Fasteners: In accordance with the standards
(ie IPC #A297A, 297A, A41P, MA175, G67, AG67, 121A,
A121A, 265A, A265A, 306A, 306B, etc.)
3 - EXECUTION
3.1 Installation: An experienced installation company
with at least 8 years of documented inspections and certifications
that is listed with Underwriters Laboratories for lightning
protection installations. A Lightning Protection Institute
Certified Master Installer/Designer shall directly supervise
the installation to accomplish its completion. All equipment
shall be installed in a neat, workmanlike manner. The
system shall consist of a complete network of conductor
cables at the roof and include air terminals, connectors,
splicers, appropriate bonding, down lead cables and proper
3.2 Coordination: The lightning protection contractor
will work with other trade contractors to ensure a correct,
neat and inconspicuous as practical installation. It shall
be the responsibility of the lightning protection contractor
to assure a proper common bond to the appropriate grounded
utilities; such as the electric service ground, incoming
water and gas pipe, etc.
The roofing contractor will be responsible for any appropriate
sacrificial pads or slip sheets to be attached to the
roofing membrane areas for the lightning protection contractor
to adhere material to as to satisfy the roof manufacturer’s
requirements. The Lightning Protection roof method of
conductor attachment in these membrane areas will be accomplished
with the sealant product M1 by Chemlink and will be provided
by the lightning protection contractor.
3.3 Inspection and Certification: Upon completion of the
installation, the contractor shall furnish the Master
Label Certification issued by Underwriters Laboratories, LLC for this system. If the existing structure does have
a LPS, the contractor shall advise the Owner of any additional
work required on the existing system to achieve compliance
with current UL Master Label requirements.