Campus Landscape Vision and Site Standards

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Novel Transmission Line Design for Reduced EMF

September 5, 2024
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Electric Field Comparison of Conventional Transmission Line With Unconventional Transmission Line

Easir Arafat, et. al

Department of Electrical and Computer Engineering

Zero Emission, Realization of Optimized Energy Systems Laboratory

The University of Texas at Dallas

Abstract: To accommodate the growing demand for electricity, a novel transmission line design has been proposed. This proposed structure must undergo rigorous evaluation to ensure it complies with existing safety standards. As magnetic field and electric field are crucial for the safety of systems and their surroundings, the proposed line must adhere to established limits. This paper presents a comparison of the electric field generated by a newly proposed unconventional overhead line compared to a conventional line where electric field is calculated for each sub-conductor individually. The results demonstrate that the unconventional transmission line exhibits a more favorable electric field profile compared to the conventional line.

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In large to medium-sized cities in the US, the highest voltages typically found in the power distribution and transmission systems are as follows:

  1. Transmission Lines: These are the high-voltage lines that transport electricity over long distances from power plants to substations near populated areas. The voltages for transmission lines can range from:
    • 69 kV (kilovolts)
    • 115 kV
    • 138 kV
    • 230 kV
    • 345 kV
    • 500 kV
    • Up to 765 kV in some areas
  2. Sub-transmission Lines: These lines carry electricity from the high-voltage transmission system to the distribution substations and have voltages typically ranging from:
    • 34.5 kV
    • 69 kV
    • 115 kV
  3. Distribution Lines: These lines deliver electricity from substations to consumers and generally operate at lower voltages. Common distribution voltages include:
    • 4.16 kV
    • 13.2 kV
    • 13.8 kV
    • 25 kV
    • 34.5 kV

The specific voltage levels can vary depending on the region and the utility company managing the electrical infrastructure. The highest voltages, especially those above 230 kV, are generally found in the transmission network, which is designed to efficiently move large quantities of power over long distances.

First Day of School

September 4, 2024
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Donegan Acoustics

Today we take a cross cutting review of all the literature (codes, standards, guidelines, laws)  that informs safe and sustainability occupancy load, means of egress, illumination, ambient air, plumbing, electric, communication and acoustics in classrooms.

1. Building Codes

  • International Building Code (IBC): Adopted by most states, it provides guidelines for the design and construction of buildings, including schools.
  • International Existing Building Code (IEBC): Provides standards for the renovation and repair of existing school buildings.
  • State and Local Building Codes: Many states and municipalities have additional or modified codes that must be followed.

2. Fire and Life Safety Codes

  • National Fire Protection Association (NFPA) Codes:
    • NFPA 101: Life Safety Code – Sets requirements for egress, fire protection, and emergency planning.
    • NFPA 13: Installation of Sprinkler Systems – Specifies standards for automatic fire sprinkler systems.
    • NFPA 72: National Fire Alarm and Signaling Code – Covers fire alarm system installation and maintenance.
    • NFPA 70: National Electrical Code (NEC) – Outlines electrical wiring standards to prevent fire hazards.

3. Accessibility Standards

  • Americans with Disabilities Act (ADA):
    • ADA Standards for Accessible Design – Ensures that school facilities are accessible to individuals with disabilities.
  • Architectural Barriers Act (ABA): Requires accessibility in buildings constructed with federal funds.

4. Environmental and Health Standards

Thermal Environmental Conditions for Human Occupancy

  • Environmental Protection Agency (EPA) Regulations:
    • EPA Lead and Asbestos Regulations: Governs the handling of lead and asbestos in school buildings.
    • EPA’s Indoor Air Quality Tools for Schools: Provides guidelines to manage air quality.

5. Structural Standards

  • American Society of Civil Engineers (ASCE):
    • ASCE 7: Minimum Design Loads and Associated Criteria for Buildings and Other Structures.
  • American Concrete Institute (ACI):
    • ACI 318: Building Code Requirements for Structural Concrete.

6. Plumbing and Mechanical Codes

  • International Plumbing Code (IPC): Provides guidelines for plumbing system design and installation.
  • International Mechanical Code (IMC): Sets standards for heating, ventilation, and air conditioning (HVAC) systems.

7. Electrical Standards

  • Institute of Electrical and Electronics Engineers (IEEE) Standards: Includes various electrical safety and installation standards relevant to school facilities.

8. Educational Specifications and Guidelines

  • Council of Educational Facility Planners International (CEFPI) Guidelines: Provides best practices for school design that promote effective learning environments.
  • State-Specific Educational Specifications: Many states have their own guidelines for the design of educational facilities to meet state-specific educational needs.

9. Safety and Security Standards

  • Crime Prevention Through Environmental Design (CPTED) Guidelines: Suggests design strategies to enhance security in school environments.
  • School Safety and Security Standards (state-specific): Some states have additional requirements for school security measures.

10. Sustainable Design Standards

  • LEED (Leadership in Energy and Environmental Design) for Schools: Provides a framework for building green and energy-efficient schools.
  • Green Building Initiative (GBI) Standards: Focuses on sustainable and energy-efficient building practices.

11. Maintenance Standards

  • International Property Maintenance Code (IPMC): Provides guidelines for the maintenance of buildings, ensuring they remain safe and functional over time.

12. Other Relevant Standards

  • Federal Emergency Management Agency (FEMA) Guidelines: Provides standards for building schools in disaster-prone areas (e.g., tornadoes, earthquakes).
  • Occupational Safety and Health Administration (OSHA) Standards: Ensures workplace safety, including in schools, covering areas like chemical safety, electrical safety, and more.

Local Considerations

  • Local Zoning Laws and Ordinances: Schools must also comply with local land use regulations, which may affect building placement, size, and use.

Classroom Acoustics


 

 

Classroom Furniture

September 4, 2024
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“The Country School” | Winslow Homer

The Business and Institutional Furniture Manufacturers Association standards catalog — largely product (rather than interoperability oriented) is linked below:  

BIFMA Standards Overview

In stabilized standards, it is more cost effective to run the changes through ANSI rather than a collaborative workspace that requires administration and software licensing cost.  Accordingly, redlines for changes, and calls for stakeholder participation are released in ANSI’s Standards Portal:

STANDARDS ACTION WEEKLY EDITION

Send your comments to Dave Panning.  (See Dave’s presentation to the University of Michigan in the video linked below.

John Peace Laptop Library Lounge | University of Texas, San Antonio

We find a great deal of interest in sustainable furniture climbing up the value chain and dwelling on material selection and manufacture.  We encourage end-users in the education industry — specifiers, department facility managers, interior design consultants, housekeeping staff and even occupants — to participate in BIFMA  standards setting.     You may obtain an electronic copies for in-process standards from David Panning, (616) 285-3963, [email protected]   You are encouraged to send comments directly to BIFMA (with copy to [email protected]).  David explains its emergent standard for furniture designed for use in healthcare settings in the videorecording linked below:

Issue: [15-267]

Contacts: Mike Anthony, Christine Fischer, Jack Janveja, Dave Panning

Category: Architectural, Facility Asset Management


Related:

A Guide to United States Furniture Compliance Requirements

Educational Seating

Aaron Copland “Our Town”

September 4, 2024
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Azusa Pacific University Symphony Orchestra | Susanna Cervantes, Graduate Conductor

Recorded Nov. 10, 2018 at the Haugh Performing Arts Center, Glendora CA

Copland wrote the score to the film version of Thornton Wilder’s play in 1940. Comparable to Copland’s other orchestral suite, Appalachian Spring, Our Town is smaller in scale, but holds the same traditional Copland characteristics: the sunrise wake up call in the beginning, the call and response, exploiting the reflective quality of the woodwinds, brass chorales, and the desperately aching sounds of the strings.

He explained, “For the film version, they were counting on the music to translate the transcendental aspects of the story. I tried for clean and clear sounds and in general used straight-forward harmonies and rhythms that would project the serenity and sense of security of the story.” It is dedicated to Leonard Bernstein.

Su Jin Susanna Cervantes is professional freelancer actively working in the greater Los Angeles area. As a cellist, Susanna has played in multiple ensembles such as Hollywood Youth Orchestra, USC Thornton Symphony, and APU Symphony Orchestra.

She has also performed in multiple chamber groups performing works by Barber, Brahms, Borodin, Franck, Mendelssohn, Rachmaninoff, and many more. She has performed in masterclasses with Daniel Hoffman, Lynn Harrell, and Alisa Weilerstein. In addition, she frequents in collaboration with singer-songwriters such as Sleeping At Last, whose hits are featured on ABC’s Grey’s Anatomy; grammy-nominated artist, Michelle Bloom; British Christian singer-songwriter, Matt Redman; and singer/actress, Jackie Tohn.

Susanna is an academic instructor at Orange County School of Arts, teaching String Literature and Music History. She is also a strings coach for the Symphony Orchestra at San Marino High School. Since 2011, Susanna has been a pianist and a music associate at First Baptist Church of Glendale, facilitating services and contracting musicians for the church. Susanna has been teaching cello privately throughout Southern California since 2010.

Susanna has received her BM in Cello Performance from Azusa Pacific University, and is currently studying with Professor Christopher Russell at Azusa Pacific University and will receive her MM in Instrumental Conducting in May of 2019.

Audio and Music Engineering

Farm Electrical Power

September 3, 2024
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ACTION ITEMS:

Article 547: Agricultural Buildings

Public Input with Responses from CMP-7 (Start at PDF Page 187)

Public Input with Responses from CMP-2 Article 220 Part V: Farm Load Calculations (Start at PDF Page 28)

Related: National Electrical Safety Code (Higher Voltage Distribution Wiring from Merchant Utility to Off-Campus Agricultural Outbuildings)

Sunday, Animal, Farm, Agri

Many land grant colleges and universities are stewards of agricultural facilities that require reliable electrical power that is safe and sustainable for livestock and animal habitat for sporting.

FREE ACCESS: 2023 National Electrical Code

The premise wiring rules for hazardous university owned buildings have been relatively stable.  Electrical professionals are guided by:

  1. Farm Load Calculations of Part V of Article 220,
  2. Corrosion mitigation with appropriate specification of power chain wiring
  3. Stray voltage and the equipotential plane
  4. Interactivity with regulated utility power sources.

Public response to the First Draft of the 2026 National Electrical Code will be received until August 28, 2024.  We coordinate our approach to the entire NFPA electrical suite with the IEEE Education & Healthcare Facilities Committee which meets 4 times monthly.  We typically refer to previous transcripts of technical committee actions to inform any changes (improvements) that we propose, if any.

2026 National Electrical Code Workspace

We maintain this issue on the standing agenda of our Power and Nourriture (Food) colloquia.  Feel free to join us with the login credentials at the upper right of our home page.


More:

2028 National Electrical Safety Code

Stray Voltage: Sources and Solutions

University of Nebraska: G87-845 Electrical Systems for Agricultural Buildings (Recommended Practices)

Cornell University Agricultural Safety and Health Program

Mike Holt

Fred Hartwell

National Safety Council  (22 deaths by electrocution on farms per 100,000 in 2017)

National Agricultural  Safety Database

 

Colloquy (September)

September 2, 2024
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Open agenda; Not Too Organized. Whatever anyone wants to talk about.  We do meet once a month like this.  Use the login credentials at the upper right of our home page.

Fall Hours at our State Street Office: 8:30 AM – 4:00 PM

Join us for lunch 11:45 AM – 1:15 PM every Third Wednesday

University of Michigan Business School Executive Dining Room

We explain changes to our syllabus given that five conferences we attend will happen mid-September through mid-November: ANSI (Washington, DC), IEC (Edinburgh, Scotland), NFPA (Redondo Beach, California) and IEEE (Long Beach, California).   Mike will be out of the office with sporadic availability.  The front desk will be open.  Sanne Clare will take phone calls September 27 through October 4.

Retrodiction

Education & Healthcare Facility Electrotechnology Committee

 

 

Federal Participation in Consensus Standards

September 2, 2024
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“City of Washington from Beyond the Navy Yard” | George Cooke (1833)

 

The White House Office of Management and Budget released a revision of OMB Circular No. A-119, Federal Participation in the Development and Use of Voluntary Consensus Standards and in Conformity Assessment Activities.  According to the announcement:

OMB has issued a revision of Circular A-119 in light of changes that have taken place in the world of regulation, standards, and conformity assessment since the Circular was last revised in 1998.  OMB’s revisions are meant to provide more detailed guidance to agencies to take into account several issues, including the Administration’s current work in Open Government, developments in regulatory policy and international trade, and changes in technology.

The response by ANSI is available at the link below:

ANSI Response OMB A-119 050614

The degree to which leading practice can be discovered and promoted by industries themselves is a policy issue upon which good minds will disagree.   Few nations disagree that innovation is faster and more enduring from the workpoint (or the point of consumption) up, but markets are not perfect instruments for discovering the greater good.  At a speech given at the University of Michigan in 2015 , S. Joe Bhatia, CEO of the American National Standards Institute, expands upon this point in the short videoclip below:

Issue: [16-18]

Contact: Mike Anthony, Christine Fischer, Jack Janveja, Richard Robben

Category: Federal Regulation

 

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