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Lightning Protection Systems

2026 Public Input Report | 2026 Public Comment Report

FEMA National Risk Index: Lightning

“Benjamin Franklin Drawing Electricity from the Sky” 1816 Benjamin West

 

Benjamin Franklin conducted his famous experiment with lightning on June 10, 1752.

He used a kite and a key to demonstrate that lightning was a form of electricity.

This experiment marked an important milestone in understanding the nature of electricity

and laid the foundation for the development of lightning rods and other lightning protection systems.

 

Seasonal extreme weather patterns in the United States, resulting in damages to education facilities and delays in outdoor athletic events — track meets; lacrosse games, swimming pool closures and the like — inspire a revisit of the relevant standards for the systems that contribute to safety from injury and physical damage to buildings: NFPA 780 Standard for the Installation of Lightning Protection Systems

FREE ACCESS

To paraphrase the NFPA 780 prospectus:

  • This document shall cover traditional lightning protection system installation requirements for the following:
       (1) Ordinary structures
       (2) Miscellaneous structures and special occupancies
       (3) Heavy-duty stacks
       (4) Structures containing flammable vapors, flammable gases, or liquids with flammable vapors
       (5) Structures housing explosive materials
       (6) Wind turbines
       (7) Watercraft
       (8) Airfield lighting circuits
       (9) Solar arrays
  • This document shall address lightning protection of the structure but not the equipment or installation requirements for electric generating, transmission, and distribution systems except as given in Chapter 9 and Chapter 12.

(Electric generating facilities whose primary purpose is to generate electric power are excluded from this standard with regard to generation, transmission, and distribution of power.  Most electrical utilities have standards covering the protection of their facilities and equipment. Installations not directly related to those areas and structures housing such installations can be protected against lightning by the provisions of this standard.)

  • This document shall not cover lightning protection system installation requirements for early streamer emission systems or charge dissipation systems.

“Down conductors” must be at least #2 AWG copper (0 AWG aluminum) for Class I materials in structures less than 75-ft in height

“Down conductors: must be at least 00 AWG copper (0000 AWG aluminum) for Class II Materials in structures greater than 75-ft in height.

Related grounding and bonding  requirements appears in Chapters 2 and Chapter 3 of NFPA 70 National Electrical Code.  This standard does not establish evacuation criteria.  

University of Michigan | Washtenaw County (Photo by Kai Petainen)

The current edition is dated 2023 and, from the transcripts, you can observe concern about solar power and early emission streamer technologies tracking through the committee decision making.  Education communities have significant activity in wide-open spaces; hence our attention to technical specifics.

2023 Public Input Report

2023 Public Comment Report

Public input on the 2026 revision is receivable until 1 June 2023.

We always encourage our colleagues to key in their own ideas into the NFPA public input facility (CLICK HERE).   We maintain NFPA 780 on our Power colloquia which collaborates with IEEE four times monthly in European and American time zones.  See our CALENDAR for the next online meeting; open to everyone.

Lightning flash density – 12 hourly averages over the year (NASA OTD/LIS) This shows that lightning is much more frequent in summer than in winter, and from noon to midnight compared to midnight to noon.

Issue: [14-105]

Category: Electrical, Telecommunication, Public Safety, Risk Management

Colleagues: Mike Anthony, Jim Harvey, Kane Howard

More

Installing lightning protection system for your facility in 3 Steps (Surge Protection)

IEEE Education & Healthcare Facility Electrotechnology

Readings: The “30-30” Rule for Outdoor Athletic Events Lightning Hazard

Churches and chapels are more susceptible to lightning damage due to their height and design. Consider:

Height: Taller structures are more likely to be struck by lightning because they are closer to the cloud base where lightning originates.

Location: If a church or chapel is situated in an area with frequent thunderstorms, it will have a higher likelihood of being struck by lightning.

Construction Materials: The materials used in the construction of the building can affect its vulnerability. Metal structures, for instance, can conduct lightning strikes more readily than non-metallic materials.

Proximity to Other Structures: If the church or chapel is located near other taller structures like trees, utility poles, or buildings, it could increase the chances of lightning seeking a path through these objects before reaching the building.

Lightning Protection Systems: Installing lightning rods and other lightning protection systems can help to divert lightning strikes away from the structure, reducing the risk of damage.

Maintenance: Regular maintenance of lightning protection systems is essential to ensure their effectiveness. Neglecting maintenance could result in increased susceptibility to lightning damage.

Historical Significance: Older buildings might lack modern lightning protection systems, making them more vulnerable to lightning strikes.

The risk can be mitigated by proper design, installation of lightning protection systems, and regular maintenance. 

Virginia Tech

Solar Panels on King’s College Chapel Roof

“…The solar panels will populate the gothic chapel roof, producing an approximate 105,000 kWh of energy a year – enough to run the chapel’s electricity, and saving around £20,000 in energy bills per year. The college confirmed that any excess energy would be sold off to the national grid.

King’s College Announcement

Solar Panels on King’s College Chapel Roof

Solar panels perform better when listening to music:

A 2013 study by researchers at Imperial College London and Queen Mary University of London showed that solar panels actually work better when exposed to music, of multiple genres. Scientists at the university proved that when exposed to high pitched sounds, like those found in rock and pop music, the solar cells’ power output increased by up to 40 percent. Classical music was also found to increase the solar cells’ energy production, but slightly less so than rock and pop, as it generally plays at a lower pitch than pop and rock. Whether they know it or not, British band Coldplay are just one of the artists benefitting from this research. During their 2021 tour, they installed solar photovoltaic panels in the build-up to each show, “behind the stage, around the stadium and where possible in the outer concourses”…

BS 7671 Requirements for Electrical Installations

The Major Differences in Electrical Standards Between the U.S. and Europe

Representative Calculation: (WAG)

To determine how much electrical power and lighting 12 kilowatts (kW) will provide for an educational facility, we need to consider the following factors:

    1. Power Distribution: How the 12 kW will be distributed across different electrical needs such as lighting, computers, HVAC (heating, ventilation, and air conditioning), and other equipment.
    2. Lighting Requirements: The specific lighting requirements per square foot or room, which can vary based on the type of facility (classrooms, libraries, laboratories, etc.).
    3. Efficiency of Lighting: The type of lighting used (e.g., LED, fluorescent, incandescent) as this affects the power consumption and lighting output.

We start with lighting.

    1. Lighting Efficiency:
      • LED lights are highly efficient, typically around 100 lumens per watt.
      • Fluorescent lights are less efficient, around 60-70 lumens per watt.
    2. Lighting Power Calculation:
      • 12 kW (12,000 watts) of LED lighting at 100 lumens per watt would provide: 12,000 watts×100 lumens/watt=1,200,000 lumens
    3. Illumination Requirements:
      • Classroom: Approximately 300-500 lux (lumens per square meter).
      • Library or laboratory: Approximately 500-750 lux.
    4. Area Coverage:
      • If we target 500 lux (which is 500 lumens per square meter), we can calculate the area covered by the lighting: (1,200,000 lumens)/ 500 lux=2,400 square meters

Now we need to allocate power to other loads.

    1. Lighting: Assuming 50% of the 12 kW goes to lighting:
      • Lighting Power: 6 kW (6,000 watts)
      • Using the previous calculation: 6,000 watts×100 lumens/watt=600,000 lumens
      • Area Coverage for lighting (at 500 lux): (600,000 lumens)/500 lux=1,200 square meters
    2. Other Electrical Needs:
      • Computers and equipment: Typically, a computer lab might use around 100 watts per computer.
      • HVAC: This can vary widely, but let’s assume 4 kW is allocated for HVAC and other systems.

Breakdown:

    • Lighting: 6 kW
    • Computers/Equipment: 2 kW (e.g., 20 computers at 100 watts each)
    • HVAC and other systems: 4 kW

Summary

    • Lighting: 12 kW can provide efficient LED lighting for approximately 1,200 square meters at 500 lux.
    • General Use: When distributed, 12 kW can cover lighting, a computer lab with 20 computers, and basic HVAC needs for a small to medium-sized educational facility.

The exact capacity will vary based on specific facility needs and equipment efficiency.

 

 

Places of Worship

“The Church is not a gallery for the exhibition of eminent Christians,

but a school for the education of imperfect ones.”

— Henry Ward Beecher

WEBCAST Committee Action Hearings, Group A #2

 

2024 International Building Code: Chapter 3 Occupancy Classification and Use

In the International Code Council catalog of best practice literature we find the first principles for safety in places of worship tracking in the following sections of the International Building Code (IBC):

Section 303 Assembly Group A

“303.1.4:  Accessory religious educational rooms and religious auditoriums with occupant loads less than 100 per room or space are not considered separate occupancies.”   This informs how fire protection systems are designed.

Section 305 Educational Group E

“305.2.1: Rooms and spaces within places of worship proving such day care during religious functions shall be classified as part of the primary occupancy.”  This group includes building and structures or portions thereof occupied by more than five children older than 2-1/2 years of age who receive educational, supervision or personal care services for fewer than 24 hours per day.

Section 308 Institutional Group I

“308.5.2: Rooms and spaces within places of religious worship providing [Group I-4 Day Care Facilities] during religious functions shall be classified as part of the primary occupancy.   When [Group I-4 Day Care Facilities] includes buildings and structures occupied by more than five persons of any age who receive custodial care for fewer than 24 hours per day by persons other than parents or guardians, relatives by blood, marriage or adoption, and in a place other than the home of the person cared for.

Tricky stuff — and we haven’t even included conditions under which university-affiliated places of worship may expected to be used as community storm shelters.

"This We'll Defend."

2024/2025/2026 ICC CODE DEVELOPMENT SCHEDULE

Public response to Committee Actions taken in Orlando in April will be received until July 8th.

Because standard development tends to be a backward-looking domain it is enlightening to understand the concepts in play in previous editions.  The complete monograph of proposals for new building safety concepts for places of worship for the current revision cycle is linked below:

 2021/2022 Code Development: Group B

A simple search on the word “worship” will reveal what ideas are in play.  With the Group B Public Comment Hearings now complete ICC administered committees are now curating the results for the Online Governmental Consensus Vote milestone in the ICC process that was completed December 6th.   Status reports are linked below:

2018/2019 Code Development: Group B

Note that a number of proposals that passed the governmental vote are being challenged by a number of stakeholders in a follow-on appeals process:

2019 Group B Appeals

A quick review of the appeals statements reveals some concern over process, administration and technical matters but none of them directly affect how leading practice for places of worship is asserted.

We are happy to get down in the weeds with facility professionals on other technical issues regarding other occupancy classes that are present in educational communities.   See our CALENDAR for next Construction (Ædificare) colloquium open to everyone.

Issue: [17-353]

Category: Chapels

Colleagues: Mike Anthony, Jack Janveja, Richard Robben, Larry Spielvogel

More

Acoustical Engineering

“What Wondrous Love”

St. Olaf Choir in Norway | In the Fjords

 

 

 

 

 

 

 

 

 

 

 

 

 

The authorship of the hymn “What Wondrous Love Is This?” is unknown, and it is believed to be a traditional American folk hymn that emerged in the early 19th century. The hymn is sometimes attributed to American composer and music educator William Walker, who included it in his songbook “Southern Harmony” in 1835.   It has  become a beloved hymn in many Christian traditions, particularly during the season of Lent and Holy Week, as it helps worshippers reflect on the depth and meaning of Jesus Christ’s sacrifice.

History of Western Civilization Told Through the Acoustics of its Worship Spaces

Standards Minnesota

St. Olaf Facilities Department

Family Walking Tour

South Africa

Chapel Prank

Practical Jokes 2024

Blanchard Hall 1858

Edman Memorial Chapel

Capital Improvement Plan | 2022-2026

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Illinois

The “Sugaring” Season

Standards Vermont

Vermont is the largest producer of maple syrup in the United States, and the maple syrup industry is an important part of the state’s economy and culture. Vermont maple syrup is renowned for its high quality and distinctive flavor, and many people around the world seek out Vermont maple syrup specifically.

The maple syrup industry in Vermont is primarily made up of small-scale family farms, where maple sap is collected from sugar maple trees in early spring using a process called “sugaring.” The sap is then boiled down to produce pure maple syrup, which is graded according to its color and flavor. Vermont maple syrup is graded on a scale from Grade A (lighter in color and milder in flavor) to Grade B (darker in color and more robust in flavor).

The Vermont maple syrup industry is heavily regulated to ensure quality and safety, and the state has strict standards for labeling and grading maple syrup. In addition to pure maple syrup, many Vermont maple producers also make maple candy, maple cream, and other maple products.

University of Vermont Facilities Management

Vermont

Unified English Braille

 

Gulliver visits the Great Academy of Lagado

In Irish author Jonathan Swift’s 1726 satire — “Gulliver’s Travels” — Lagado is the capital of Balnibarbi whose king had invested a great fortune on building an “Academy of Projectors” so that it shall contribute to the nation’s development through research.

Gulliver describes pointless experiments conducted there — trying to change human excretion back into food, trying to extract sunbeams out of cucumbers, teaching mathematics to pupils by writing propositions on wafers and consuming them.

“Gulliver’s Travels” 1939 Production | (Max Fleischer (1883 – 1972)

“None are so blind as those who refuse to see” is a proverbial expression that has been used by many authors and public figures throughout history. The exact origin of the phrase is unknown, but it has been attributed to various sources, including the Bible, where Jesus says, “For judgment I am come into this world, that they which see not might see; and that they which see might be made blind” (John 9:39, King James Version).

The phrase has also been attributed to Jonathan Swift, an Irish author and satirist, who wrote in his 1738 work,

“Polite Conversation”: “Blind, sir? I see every day where Lord M– goes upon the bench without his bag, and you tell me he is not blind?”.

However, it is possible that the phrase existed prior to Swift and was simply popularized by him.

Internet Archive: Gulliver’s Travels

Gallery: Other Ways of Knowing Climate Change

Eric Weinstein: We need a scientific revolution

 

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