Exhibit J UFGS 26 41 00.pdf

USACE / NAVFAC / AFCEC / NASA UFGS- 26 41 00 ( November 2013) Pr epar i ng Act i v i t y: NAVFAC Super sedi ng UFGS- 26 41 01. 00 10 ( November 2008) UFGS- 26 41 00. 00 20 ( Apr i l 2006)

UNI FI ED FACI LI TI ES GUI DE SPECI FI CATI ONS

Ref er ences ar e i n agr eement wi t h UMRL dat ed Januar y 2021

SECTION TABLE OF CONTENTS

DIVISION 26 - ELECTRICAL

SECTION 26 41 00

LIGHTNING PROTECTION SYSTEM

11/13

PART 1 GENERAL

1.1 REFERENCES

1.2 RELATED REQUIREMENTS

1.2.1 Verification of Dimensions

1.2.2 System Requirements

1.2.3 Lightning Protection System Installers Documentation

1.3 SUBMITTALS

1.4 QUALITY ASSURANCE

1.4.1 Installation Drawings

1.4.1.1 Overall System Drawing

1.4.1.2 Major Components

1.4.2 Component UL Listed and Labeled

1.4.3 Lightning Protection and Grounding System Test Plan

1.4.4 Lightning Protection System Inspection Certificate

1.5 SITE CONDITIONS

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Main and Bonding Conductors

2.1.2 Copper Only

2.2 COMPONENTS

2.2.1 Air Terminals

2.2.2 Ground Rods

2.2.3 Grounding Plates

2.2.4 Connections and Terminations

2.2.5 Connector Fittings

PART 3 EXECUTION

3.1 INTEGRAL SYSTEM

3.1.1 Roof-Mounted Components

3.1.1.1 Air Terminals

3.1.1.2 Roof Conductors

SECTION 26 41 00 Page 1

3.1.2 Down Conductors

3.1.3 Ground Connections

3.1.4 Grounding Electrodes

3.1.5 Grounding Plates

3.2 APPLICATIONS

3.2.1 Nonmetallic Exterior Walls with Metallic Roof

3.2.2 Personnel Ramps and Covered Passageways

3.3 INTERFACE WITH OTHER STRUCTURES

3.3.1 Fences

3.3.2 Exterior Overhead Systems

3.4 RESTORATION

3.5 FIELD QUALITY CONTROL

3.5.1 Lightning Protection and Grounding System Test

-- End of Section Table of Contents --

SECTION 26 41 00 Page 2

USACE / NAVFAC / AFCEC / NASA UFGS- 26 41 00 ( November 2013) Pr epar i ng Act i v i t y: NAVFAC Super sedi ng UFGS- 26 41 01. 00 10 ( November 2008) UFGS- 26 41 00. 00 20 ( Apr i l 2006)

UNI FI ED FACI LI TI ES GUI DE SPECI FI CATI ONS

Ref er ences ar e i n agr eement wi t h UMRL dat ed Januar y 2021

SECTION 26 41 00

LIGHTNING PROTECTION SYSTEM

11/13

NOTE: Thi s gui de speci f i cat i on cover s t he r equi r ement s f or l i ght ni ng pr ot ect i on syst ems f or non- or dnance f aci l i t i es. Modi f y t hi s gui de speci f i cat i on as needed t o addr ess uni que r equi r ement s f or or dnance- r el at ed f aci l i t i es. Fol l ow r equi r ement s i n UFC 3- 575- 01, " Li ght ni ng and St at i c El ect r i c i t y Pr ot ect i on Syst ems" and cont act t he ser vi ce- speci f i c or dnance or gani zat i on f or gui dance.

Adher e t o UFC 1-300-02 Uni f i ed Faci l i t i es Gui de Speci f i cat i ons ( UFGS) For mat St andar d when edi t i ng t hi s gui de speci f i cat i on or pr epar i ng new pr oj ect speci f i cat i on sect i ons. Edi t t hi s gui de speci f i cat i on f or pr oj ect speci f i c r equi r ement s by addi ng, del et i ng, or r evi s i ng t ext . For br acket ed i t ems, choose appl i cabl e i t em( s) or i nser t appr opr i at e i nf or mat i on.

Remove i nf or mat i on and r equi r ement s not r equi r ed i n r espect i ve pr oj ect , whet her or not br acket s ar e present.

Comment s, suggest i ons and r ecommended changes f or t hi s gui de speci f i cat i on ar e wel come and shoul d be submi t t ed as a Criteria Change Request (CCR) .

NOTE: Show t he f ol l owi ng i nf or mat i on on t he pr oj ect drawings:

1. Locat i on and hei ght of ai r t er mi nal s.

2. Locat i on of down conduct or s, i ncl udi ng l ocat i ons wher e down conduct or s ar e subj ect t o physi cal damage and r equi r e addi t i onal pr ot ect i on.

3. Locat i on of gr ound r ods.

4. Locat i on of gr ound r i ng el ect r odes or al t er nat e

SECTION 26 41 00 Page 3 met hods f or gr oundi ng el ect r odes ( i f any) .

5. Locat i on of t est wel l s.

6. Fence and gat e bondi ng det ai l s.

7. For addi t i ons t o l i ght ni ng pr ot ect i on syst ems on exi st i ng f aci l i t i es, show l ocat i ons of t i e- i n poi nt s.

PART 1 GENERAL

1.1 REFERENCES

NOTE: Thi s par agr aph i s used t o l i s t t he publ i cat i ons c i t ed i n t he t ext of t he gui de speci f i cat i on. The publ i cat i ons ar e r ef er r ed t o i n t he t ext by basi c desi gnat i on onl y and l i s t ed i n t hi s par agr aph by or gani zat i on, desi gnat i on, dat e, and t i t l e.

Use t he Ref er ence Wi zar d' s Check Ref er ence f eat ur e when you add a Ref er ence I dent i f i er ( RI D) out si de of t he Sect i on' s Ref er ence Ar t i c l e t o aut omat i cal l y pl ace t he r ef er ence i n t he Ref er ence Ar t i c l e. Al so use t he Ref er ence Wi zar d' s Check Ref er ence f eat ur e t o updat e t he i ssue dat es.

Ref er ences not used i n t he t ext wi l l aut omat i cal l y be del et ed f r om t hi s sect i on of t he pr oj ect speci f i cat i on when you choose t o r econci l e r ef er ences i n t he publ i sh pr i nt pr ocess.

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 81 (2012) Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Ground System

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2020; ERTA 20-1 2020; ERTA 20-2 2020; TIA

20-1; TIA 20-2; TIA 20-3; TIA 20-4)

National Electrical Code

NFPA 780 (2017) Standard for the Installation of Lightning Protection Systems

U.S. AIR FORCE (USAF)

AFI 32-1065 (2017) Grounding Systems

SECTION 26 41 00 Page 4

UNDERWRITERS LABORATORIES (UL)

UL 96 (2016) UL Standard for Safety Lightning Protection Components

UL 467 (2013; Reprint Jun 2017) UL Standard for Safety Grounding and Bonding Equipment

UL Electrical Construction (2012) Electrical Construction Equipment Directory

1.2 RELATED REQUIREMENTS

1.2.1 Verification of Dimensions

Confirm all details of work, verify all dimensions in field, and advise Contracting Officer of any discrepancy before performing work. Obtain prior approval of Contracting Officer before making any departures from the design.

1.2.2 System Requirements

NOTE: Thi s speci f i cat i on i s based on compl i ance wi t h NFPA 780 as speci f i ed i n UFC 3- 575- 01, " Li ght ni ng and St at i c El ect r i c i t y Pr ot ect i on Syst ems" .

NFPA 780 r equi r es sur ge pr ot ect i ve devi ces ( SPDs) at al l ser vi ce ent r ances as par t of a l i ght ni ng pr ot ect i on syst em. I ncl ude Sect i on 26 20 00 I NTERI OR DI STRI BUTI ON SYSTEM t o speci f y SPD requirements.

Provide a system furnished under this specification consisting of the latest UL Listed products of a manufacturer regularly engaged in production of lightning protection system components. Comply with NFPA 70 , NFPA 780 , and UL 96 .

1.2.3 Lightning Protection System Installers Documentation

Provide documentation showing that the installer is certified with a commercial third-party inspection company whose sole work is lightning protection, or is a UL Listed Lightning Protection Installer. In either case, the documentation must show that they have completed and passed the requirements for certification or listing, and have a minimum of 2 years documented experience installing lightning protection systems for DoD projects of similar scope and complexity.

1.3 SUBMITTALS

NOTE: Revi ew Submi t t al Descr i pt i on ( SD) def i ni t i ons i n Sect i on 01 33 00 SUBMI TTAL PROCEDURES and edi t t he f ol l owi ng l i s t , and cor r espondi ng submi t t al i t ems i n t he t ext , t o r ef l ect onl y t he submi t t al s r equi r ed f or t he pr oj ect . The Gui de Speci f i cat i on t echni cal edi t or s have cl assi f i ed t hose i t ems t hat

SECTION 26 41 00 Page 5 r equi r e Gover nment appr oval , due t o t hei r compl exi t y or cr i t i cal i t y, wi t h a " G. " Gener al l y, ot her submi t t al i t ems can be r evi ewed by t he Cont r act or ' s Qual i t y Cont r ol Syst em. Onl y add a " G" t o an i t em i f t he submi t t al i s suf f i c i ent l y i mpor t ant or compl ex i n cont ext of t he pr oj ect .

For Ar my pr oj ect s, f i l l i n t he empt y br acket s f ol l owi ng t he " G" c l assi f i cat i on, wi t h a code of up t o t hr ee char act er s t o i ndi cat e t he appr ovi ng aut hor i t y. Codes f or Ar my pr oj ect s usi ng t he Resi dent Management Syst em ( RMS) ar e: " AE" f or Ar chi t ect - Engi neer ; " DO" f or Di st r i ct Of f i ce ( Engi neer i ng Di v i s i on or ot her or gani zat i on i n t he Di st r i ct Of f i ce) ; " AO" f or Ar ea Of f i ce; " RO" f or Resi dent Of f i ce; and " PO" f or Pr oj ect Of f i ce. Codes f ol l owi ng t he " G" t ypi cal l y ar e not used f or Navy, Ai r For ce, and NASA pr oj ect s.

The " S" c l assi f i cat i on i ndi cat es submi t t al s r equi r ed as pr oof of compl i ance f or sust ai nabi l i t y Gui di ng Pr i nci pl es Val i dat i on or Thi r d Par t y Cer t i f i cat i on and as descr i bed i n Sect i on 01 33 00 SUBMI TTAL

PROCEDURES.

Choose t he f i r st br acket ed i t em f or Navy, Ai r For ce, and NASA pr oj ect s, or choose t he second br acket ed i t em f or Ar my pr oj ect s.

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are [for Contractor Quality Control approval.][for information only. When used, a code following the "G" classification identifies the office that will review the submittal for the Government.] Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

NOTE: Modi f y submi t t al s par agr aphs t o ensur e t hat an appr opr i at e submi t t al i s r equi r ed f or each i t em i n t he pr oj ect .

NOTE: For t he Ai r For ce, modi f y Di v i s i on 1 par agr aphs t o r equi r e submi ssi on of l i ght ni ng pr ot ect i on shop dr awi ngs, t est r epor t s and cer t i f i cat es t o t he Base Ci vi l Engi neer and t o t he Desi gner of Recor d v i a t he Cont r act i ng Of f i cer f or appr oval . The Base Ci vi l Engi neer r et ai ns f i nal s i t e appr oval aut hor i t y.

SD-02 Shop Drawings

Overall lightning protection system ; G[, [_____]]

Each major component ; G[, [_____]]

SECTION 26 41 00 Page 6

SD-06 Test Reports

Lightning Protection and Grounding System Test Plan ; G[, [_____]]

Lightning Protection and Grounding System Test ; G[, [_____]]

SD-07 Certificates

Lightning Protection System Installers Documentation ; G[, [_____]]

Component UL Listed and Labeled ; G[, [_____]]

Lightning protection system inspection certificate ; G[, [_____]]

Roof manufacturer's warranty ; G[, [_____]]

1.4 QUALITY ASSURANCE

In each standard referred to herein, consider the advisory provisions to be mandatory, as though the word "shall" or "must" has been substituted for "should" wherever it appears. Interpret references in these standards to "authority having jurisdiction," or words of similar meaning, to mean Contracting Officer.

1.4.1 Installation Drawings

1.4.1.1 Overall System Drawing

Submit installation shop drawing for the overall lightning protection system . Include on the drawings the physical layout of the equipment (plan view and elevations), mounting details, relationship to other parts of the work, and wiring diagrams.

1.4.1.2 Major Components

Submit detail drawings for each major component including manufacturer's descriptive and technical literature, catalog cuts, and installation instructions.

1.4.2 Component UL Listed and Labeled

Submit proof of compliance that components are UL Listed and Labeled.

Listing alone in UL Electrical Construction , which is the UL Electrical Construction Directory, is not acceptable evidence. In lieu of Listed and Labeled, submit written certificate from an approved, nationally recognized testing organization equipped to perform such services, stating that items have been tested and conform to requirements and testing methods of Underwriters Laboratories.

1.4.3 Lightning Protection and Grounding System Test Plan

Provide a lightning protection and grounding system test plan. Detail both the visual inspection and electrical testing of the system and components in the test plan. Identify (number) the system test points/locations along with a listing or description of the item to be tested and the type of test to be conducted. As a minimum, include a sketch of the facility and surrounding lightning protection system as part of the specific test plan for each structure. Include the requirements specified in paragraph, "Testing of Integral Lightning Protection System"

SECTION 26 41 00 Page 7 in the test plan.

[ 1.4.4 Lightning Protection System Inspection Certificate

NOTE: Sel ect t he f i r st br acket ed opt i on f or Ar my and Navy f aci l i t i es.

Sel ect second br acket ed opt i on f or Ai r For ce facilities.

[ Provide certification from a commercial third-party inspection company whose sole work is lightning protection, stating that the lightning protection system complies with NFPA 780 . Third party inspection company cannot be the system installer or the system designer. Alternatively, provide a UL Lightning Protection Inspection Master Label Certificate for each facility indicating compliance to NFPA 780 .

][ Provide certification from a commercial third-party inspection company whose sole work is lightning protection, stating that the lightning protection system complies with NFPA 780 and AFI 32-1065 . Third party inspection company cannot be the system installer or the system designer.

Alternatively, provide a UL Lightning Protection Inspection Master Label Certificate for each facility indicating compliance to NFPA 780 and AFI 32-1065 . In either case, AFI 32-1065 takes precedence over NFPA 780 , whether or not it is more stringent.

] Inspection must cover every connection, air terminal, conductor, fastener, accessible grounding point and other components of the lightning protection system to ensure 100% system compliance. This includes witnessing the tests for the resistance measurements for ground rods with test wells, and for continuity measurements for bonds. It also includes verification of proper surge protective devices for power, data and telecommunication systems. Random sampling or partial inspection of a facility is not acceptable.

] 1.5 SITE CONDITIONS

Confirm all details of work, verify all dimensions in field, and advise Contracting Officer of any discrepancy before performing work. Obtain prior approval of Contracting Officer before changing the design.

PART 2 PRODUCTS

2.1 MATERIALS

Do not use a 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.

Where unusual conditions exist which would cause corrosion of conductors, provide conductors with protective coatings, such as tin or lead, or oversize conductors. Where a mechanical hazard is involved, increase conductor size to compensate for the hazard or protect conductors. When metallic conduit or tubing is provided, electrically bond conductor to conduit or tubing at the upper and lower ends by clamp type connectors or welds (including exothermic). All lightning protection components, such as bonding plates, air terminals, air terminal supports and braces, chimney bands, clips, connector fittings, and fasteners are to comply with

SECTION 26 41 00 Page 8 the requirements of UL 96 classes as applicable.

2.1.1 Main and Bonding Conductors

NOTE: NFPA 780 - Cl ass I ar e or di nar y bui l di ng 23m 75 f t or l ess i n hei ght and Cl ass I I ar e or di nar y bui l di ngs over 23m 75 f t i n hei ght .

NFPA 780 and UL 96 Class I, Class II, or Class II modified materials as applicable.

[ 2.1.2 Copper Only

NOTE: I ncl ude t he opt i onal copper r equi r ement onl y i f est abl i shed by t echni cal r equi r ement s of t he pr oj ect . Ot her wi se, code r equi r ement s wi l l di ct at e wher e copper and al umi num can be used.

Provide copper conductors, except where aluminum conductors are required for connection to aluminum equipment.

] 2.2 COMPONENTS

2.2.1 Air Terminals

Provide solid air terminals with a blunt tip. Tubular air terminals are not permitted. Support air terminals more than 600 mm 24 inches in length by suitable brace, supported at not less than one-half the height of the terminal.

2.2.2 Ground Rods

NOTE: The desi gner wi l l det er mi ne t he t ype and number of gr ound r ods t o be used based on l ocal condi t i ons and ear t h r esi st i v i t y dat a. NFPA 780 al l ows copper - c l ad st eel , sol i d copper , or st ai nl ess st eel gr ound r ods f or mul t i pl e gr ound r od appl i cat i ons.

Speci f y copper c l ad st eel r ods f or nor mal condi t i ons. The use of ot her mat er i al s such as gal vani zed coat ed st eel wi l l r equi r e wr i t t en aut hor i zat i on i n accor dance wi t h t he MI L- STD- 3007F, Par agr aph 5. 1. 7, " Wai ver s and Exempt i ons" .

I n hi gh r esi st i v i t y soi l s, 3000 mm 10 f oot sect i onal r ods may be used t o obt ai n t he r equi r ed r esi st ance t o gr ound; however , wher e r ock i s encount er ed, addi t i onal r ods, a gr ound r i ng el ect r ode, or gr ound gr i d may be necessar y. Coor di nat e and st andar di ze r od sel ect i on f or i ndi v i dual f aci l i t i es wi t h ot her speci f i cat i on sect i ons.

SECTION 26 41 00 Page 9

Provide [ground rods made of [copper-clad steel] [solid copper] conforming to conform to UL 467 .] Provide ground rods that are not less than 20 mm 3/4 inch in diameter and 3000 mm 10 feet in length. Do not mix ground rods of copper-clad steel or solid copper on the job.

[ 2.2.3 Grounding Plates

NOTE: The use of gr oundi ng pl at es i s an al l owed al t er nat i ve t o gr ound r ods i n ar eas wher e excessi ve r ock and sur f ace l edge i s encount er ed.

Provide grounding plates made of [copper-clad steel][iron][stainless steel] [solid copper] conforming to UL 96 .

] 2.2.4 Connections and Terminations

Provide connectors for splicing conductors that conform to UL 96 , class as applicable. Conductor connections can be made by clamps or welds (including exothermic). Provide style and size connectors required for the installation.

2.2.5 Connector Fittings

Provide connector fittings for "end-to-end", "Tee", or "Y" splices that conform to NFPA 780 and UL 96 .

PART 3 EXECUTION

3.1 INTEGRAL SYSTEM

NOTE: Thi s speci f i cat i on i s based on compl i ance wi t h NFPA 780 as speci f i ed i n UFC 3- 575- 01, " Li ght ni ng and St at i c El ect r i c i t y Pr ot ect i on Systems".

I ncl ude br acket ed opt i on i n f i r st sent ence f or t i e- i ns t o exi st i ng l i ght ni ng pr ot ect i on syst ems.

I ncl ude second br acket ed opt i on i f gr ound r i ng el ect r odes ar e r equi r ed. I ncl ude addi t i onal br acket ed opt i ons as appr opr i at e f or t he l i ght ni ng pr ot ect i on syst em desi gn.

Provide a lightning protection system that meets the requirements of NFPA 780 [, including tie-ins to existing lightning protection systems].

Lightning protection system consists of air terminals, roof conductors, down conductors, ground connections, [and] grounding electrodes[ and ground ring electrode conductor]. [Expose conductors on the structures except where conductors are required to be in protective sleeves.] Bond secondary conductors with grounded metallic parts within the building.

Make interconnections within side-flash distances at or below the level of the grounded metallic parts.

3.1.1 Roof-Mounted Components

Coordinate with the roofing manufacturer and provide certification that

SECTION 26 41 00 Page 10 the roof manufacturer's warranty is not violated by the installation methods for air terminals and roof conductors.

3.1.1.1 Air Terminals

NOTE: Sel ect br acket ed opt i ons based on r oof t ype and l ocat i on.

[Use adhesive shoes with adhesive approved by the roof manufacturer when installing air terminals on "rubber" (EPDM) type roofs.] [In areas of snow or constant wind, ensure that a section of roofing material (minimum dimensional area of 92,900 square mm 1 square foot ) is first glued to the roof and then the air terminal is glued to it unless the roof manufacturer recommends another solution.] [Use a standing seam base for installation of air terminals on a standing seam metal roof that does not produce any roof penetrations.]

3.1.1.2 Roof Conductors

NOTE: Sel ect br acket ed opt i ons based on r oof t ype and l ocat i on. Del et e t he l ast br acket ed opt i on f or conceal i ng r oof conduct or s f or Ai r For ce and Navy projects.

[Use adhesive shoes with adhesive approved by the roof manufacturer when installing roof conductors on "rubber" (EPDM) type roofs.] [Use a standing seam base for installation of roof conductors on a standing seam metal roof that does not produce any roof penetrations.] [Roof conductors are to be concealed within the ceiling cavities as much as practicable.]

3.1.2 Down Conductors

NOTE: Sel ect br acket ed opt i on i f down conduct or s ar e t o be conceal ed. Del et e t he br acket ed opt i on f or Ai r For ce and Navy pr oj ect s.

Protect exposed down conductors from physical damage as required by NFPA 780 . Use Schedule 80 PVC to protect down conductors. Paint the Schedule 80 PVC to match the surrounding surface with paint that is approved for use on PVC. [Down conductors are to be concealed within the wall cavities.]

3.1.3 Ground Connections

Attach each down conductor [and ground ring electrode] to ground rods by welding (including exothermic), brazing, or compression. All connections to ground rods below ground level must be by exothermic weld connection or with a high compression connection using a hydraulic or electric compression tool to provide the correct circumferential pressure.

Accessible connections above ground level and in test wells can be accomplished by mechanical clamping.

SECTION 26 41 00 Page 11

3.1.4 Grounding Electrodes

NOTE: Wher e soi l condi t i ons i ndi cat e def i ni t el y t hat a gr ound r i ng el ect r ode wi l l not be r equi r ed, al l r ef er ences t o a gr ound r i ng el ect r ode shoul d be del et ed f r om t he speci f i cat i ons.

I f r equi r ed by soi l condi t i ons, sel ect an al t er nat e met hod f or gr oundi ng el ect r odes i n shal l ow soi l .

Ut i l i ze NFPA 780 or an al t er nat e met hod meet i ng t he i nt ent of NFPA 780. Val i dat e by cal cul at i ons or hi st or i cal dat a f or s i t e condi t i ons. Modi f y t he wor di ng bel ow as necessar y t o speci f y t he syst em design.

Extend driven ground rods vertically into the existing undisturbed earth for a distance of not less 3000 mm 10 feet . Set ground rods not less than 915 mm 3 feet nor more than 2440 mm 8 feet , from the structure foundation, and at least beyond the drip line for the facility. After the completed installation, measure the total resistance to ground using the fall-of-potential method described in IEEE 81 . Maximum allowed resistance of a driven ground rod is [25] [_____] ohms, under normally dry conditions [when a ground ring electrode is not used]. Contact the Contracting Officer for direction on how to proceed when two of any three ground rods, driven not less than 3000 mm 10 feet into the ground, a minimum of 3000 mm 10 feet apart, and equally spaced around the perimeter, give a combined value exceeding 50 ohms immediately after having driven. [For ground ring electrode, provide continuous No. 1/0 bare stranded copper cable. Lay ground ring electrode around the perimeter of the structure in a trench not less than 915 mm 3 feet nor more than 2440 mm 8 feet from the nearest point of the structure foundation, and at least beyond the drip line for the facility. Install ground ring electrode to a minimum depth of 765 mm 30 inches . Install a ground ring electrode in earth undisturbed by excavation, not earth fill, and do not locate beneath roof overhang, or wholly under paved areas or roadways where rainfall cannot penetrate to keep soil moist in the vicinity of the cable.]

[ 3.1.5 Grounding Plates

NOTE: The use of gr oundi ng pl at es i s an al l owed al t er nat i ve t o gr ound r ods i n ar eas wher e excessi ve r ock and sur f ace l edge i s encount er ed.

Provide a grounding plate for each down conductor. Set grounding plates not less than 915 mm 3 feet nor more than 2440 mm 8 feet , from the structure foundation, and at least beyond the drip line for the facility.

Grounding plate is to be buried as deeply in the existing dirt as local conditions allow, without exceeding 3000 mm 10 feet in depth.

SECTION 26 41 00 Page 12

] 3.2 APPLICATIONS

3.2.1 Nonmetallic Exterior Walls with Metallic Roof

Bond metal roof sections together which are insulated from each other so that they are electrically continuous, having a surface contact of at least 1935 square mm 3 square inches .

[ 3.2.2 Personnel Ramps and Covered Passageways

NOTE: Per sonnel r amps and cover ed passageways t hat ar e i n t he zone of pr ot ect i on of a l i ght ni ng pr ot ect i on syst em, as def i ned by NFPA 780, do not need addi t i onal l i ght ni ng pr ot ect i on. Pr ot ect per sonnel r amps and cover ed passageways t hat ar e out si de t he zone of pr ot ect i on wi t h l i ght ni ng pr ot ect i on conf or mi ng t o t he r equi r ement s f or bui l di ngs of s i mi l ar const r uct i on. Sel ect t he br acket ed opt i on i f l i ght ni ng pr ot ect i on i s r equi r ed.

Place a down conductor and a driven ground at one of the corners where the ramp connects to each building or structure. Connect down conductor and driven ground to the ground ring electrode or nearest ground connection of the building or structure. Where buildings or structures and connecting ramps are clad with metal, separately bond the metal of the buildings and ramps to a down conductor as close to grade as possible.

] 3.3 INTERFACE WITH OTHER STRUCTURES

[ 3.3.1 Fences

NOTE: Sel ect t hi s br acket ed opt i on i f met al f ence and gat e syst ems ar e l ocat ed wi t hi n 6 f eet of t he l i ght ni ng pr ot ect i on syst em.

Coor di nat e wi t h Sect i on 33 71 02 UNDERGROUND ELECTRI CAL DI STRI BUTI ON f or addi t i onal el ect r i cal di st r i but i on syst em r equi r ement s. Coor di nat e wi t h Section 32 31 13 CHAI N LI NK FENCES AND GATES, f or f ence gr oundi ng r equi r ement s.

Bond metal fence and gate systems to the lightning protection system whenever the fence or gate is within 1830 mm 6 feet of any part of the lightning protection system in accordance with ANSI C2.

][ 3.3.2 Exterior Overhead Systems

NOTE: Sel ect t hi s br acket ed opt i on whenever over head syst ems ent er i ng t he f aci l i t y ar e out si de t he zone of pr ot ect i on.

Bond to the nearest down conductor as close to grade as possible. This includes overhead pipes, conduits, cable trays, or any other metallic

SECTION 26 41 00 Page 13 objects on the exterior of the building that enter a building. In addition, bond pipes, conduits, and cable trays to any metallic objects (such as steel structural support of air handling units or cooling towers) that are within 1830 mm 6 feet .

] 3.4 RESTORATION

Where sod has been removed, place sod as soon as possible after completing the backfilling. Restore, to original condition, the areas disturbed by trenching, storing of dirt, cable laying, and other work. Overfill to accommodate for settling. Include necessary topsoil, fertilizing, liming, seeding, sodding, sprigging or mulching in any restoration. Maintain disturbed surfaces and replacements until final acceptance.

3.5 FIELD QUALITY CONTROL

3.5.1 Lightning Protection and Grounding System Test

NOTE: Use 25 ohms i n t he br acket ed opt i on unl ess t he speci f i c f aci l i t y , such as a t el ecommuuni cat i ons f aci l i t y , r equi r es a l ower val ue.

Test the lightning protection and grounding system to ensure continuity is not in excess of 1 ohm and that resistance to ground is not in excess of [25] [_____] ohms. Provide documentation for the measured values at each test point. Test the ground rod for resistance to ground before making connections to the rod. Tie the grounding system together and test for resistance to ground. Make resistance measurements in dry weather, not earlier than 48 hours after rainfall. Include in the written report:

locations of test points, measured values for continuity and ground resistances, and soil conditions at the time that measurements were made.

Submit results of each test to the Contracting Officer.

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