Horologiorum

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Horologiorum

August 9, 2024
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“Gather Ye Rosebuds While Ye May” John Herrick | John William Waterhouse

University of New Hampshire

University of Michigan

Western University Ontario

Trinity College

Mississippi State University

南洋華僑中學

Shelton State Community College Alabama

Winona State University

Oklahoma City Community College

University of Illinois

Bucknell University Pennsylvania

St. Francis Xavier College Missouri

University of Mississippi

University of North Dakota

University of Montana

Gardner-Webb University North Carolina

University of California Berkeley

Auburn University Alabama

 

Indiana University

Sam Houston State University Texas

Otago University New Zealand

Hillsdale College Michigan


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ISO 8601:2004 Data elements and interchange formats — Information interchange — Representation of dates and times

National Institute of Science & Technology: Time and Frequency

National Institute of Science & Technology: Current Reliability of the WWVB Time Code

NFPA 72 National Fire Alarm & Signaling Code Chapter 23: Protected Premises Alarm and Signaling Systems

Watersport

August 9, 2024
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Athletic Competition Timing Standards

Today we update our understanding of best practice catalogs for outdoor and indoor watersport; primarily swimming and rowing.  Use the login credentials at the upper right of our home page.

Natatoriums 300: Advanced Topics

Sapienza – Università di Roma

USA Swimming and the National Collegiate Athletic Association Swimming are two distinct organizations that oversee different aspects of competitive swimming in the United States. USA Swimming governs competitive swimming in the United States across all age groups and skill levels, while NCAA Swimming specifically focuses on collegiate-level swimming and diving competitions within the NCAA framework. Both organizations play crucial roles in the development and promotion of swimming in the United States.

Governing Body:

USA Swimming is the national governing body for the sport of swimming in the United States. It is responsible for overseeing competitive swimming at all levels, from grassroots programs to elite national and international competitions.
NCAA Swimming: NCAA Swimming is part of the National Collegiate Athletic Association (NCAA), which governs intercollegiate sports in the United States. NCAA Swimming specifically deals with collegiate-level swimming competitions among universities and colleges.

Scope:

USA Swimming is responsible for organizing and regulating competitive swimming for all age groups and skill levels, from youth swimmers to Masters swimmers (adults). It oversees swim clubs, hosts competitions, and develops national teams for international events.
NCAA Swimming: NCAA Swimming focuses exclusively on college-level swimming and diving competitions. It sets the rules and guidelines for swimming and diving programs at NCAA member institutions.

Membership:

Individuals, swim clubs, and teams can become members of USA Swimming, allowing them to participate in USA Swimming-sanctioned events, access coaching resources, and benefit from the organization’s development programs.
NCAA Swimming: NCAA Swimming is composed of collegiate athletes who compete for their respective universities and colleges. Athletes are typically student-athletes who represent their schools in NCAA-sanctioned competitions.

Competition Format:

USA Swimming hosts a wide range of competitions, including local, regional, and national meets, as well as Olympic Trials and international events. Swimmers compete as individuals, representing their swim clubs or teams.
NCAA Swimming: NCAA Swimming primarily consists of dual meets, invitational meets, and conference championships at the collegiate level. Swimmers represent their respective universities or colleges, earning points for their teams in dual meets and competing for conference and national titles.

Scholarships:

USA Swimming itself does not offer scholarships. Scholarships for competitive swimmers are typically awarded by colleges and universities based on an athlete’s performance and potential.
NCAA Swimming: NCAA member institutions offer scholarships to talented student-athletes in various sports, including swimming. These scholarships can cover tuition, room, board, and other expenses, making NCAA swimming an avenue for athletes to receive financial support for their education.

 


 

Swimming, Water Polo and Diving Lighting

Steeplechase Water Jump

August 9, 2024
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The steeplechase event requires a combination of speed, endurance, and jumping ability, as athletes must clear the barriers while maintaining their pace and negotiating the water jump. The rules and specifications for the steeplechase event are set by the International Association of Athletics Federations the governing body for the sport of athletics (track and field) worldwide; with minor adaptations by the NCAA for intercollegiate competition.

Emma Coburn | University of Colorado Boulder

The steeplechase is a distance race with barriers and a water pit that athletes must clear during the race.  According to the NCAA Track and Field and Cross Country rulebook, the standards for the steeplechase water jump are as follows:

  1. Length: The water pit must be at least 3.66 meters (12 feet) long.
  2. Width: The water pit must be at least 3.66 meters (12 feet) wide.
  3. Depth: The water pit must have a minimum depth of 0.7 meters (2 feet 4 inches) and a maximum depth of 0.9 meters (2 feet 11 inches).
  4. Slope: The slope of the water pit must not exceed 1:5, meaning that for every 5 meters in length, the water pit can rise by no more than 1 meter in height.
  5. Barrier: The water pit must be preceded by a solid barrier that is 91.4 cm (3 feet) high. Athletes are required to clear this barrier before landing in the water pit.

These standards may be subject to change and may vary depending on the specific NCAA division (Division I, Division II, or Division III) and other factors such as venue requirements. Therefore, it’s always best to refer to the official NCAA rules and regulations for the most up-to-date and accurate information on the steeplechase water jump standards in NCAA competitions.

ASTM F 2157-09 (2018) Standard Specification for Synthetic Surfaced Running Tracks
This specification establishes the minimum performance requirements and classification when tested in accordance with the procedures outlined within this specification. All documents referencing this specification must include classification required.

ASTM F 2569-11 Standard Test Method for Evaluating the Force Reduction Properties of Surfaces for Athletic Use
This test method covers the quantitative measurement and normalization of impact forces generated through a mechanical impact test on an athletic surface. The impact forces simulated in this test method are intended to represent those produced by lower extremities of an athlete during landing events on sport or athletic surfaces.

ASTM F 2949-12 Standard Specification for Pole Vault Box Collars
This specification covers minimum requirements of size, physical characteristics of materials, standard testing procedures, labeling and identification of pole vault box collars.

ASTM F 1162/F1162M-18 Standard Specification for Pole Vault Landing Systems
This specification covers minimum requirements of size, physical characteristics of materials, standard testing procedures, labeling and identification of pole vault landing systems.

ASTM F 2270-12 (2018) Standard Guide for Construction and Maintenance of Warning Track Areas on Sports Fields
This guide covers techniques that are appropriate for the construction and maintenance of warning track areas on sports fields. This guide provides guidance for the selection of materials, such as soil and sand for use in constructing or reconditioning warning track areas and for selection of management practices that will maintain a safe and functioning warning track.

ASTM F 2650-17e1 Standard Terminology Relating to Impact Testing of Sports Surfaces and Equipment
This terminology covers terms related to impact test methods and impact attenuation specifications of sports equipment and surfaces.

Sports Equipment & Surfaces

Pool, Fountain, Agriculture & Water Infrastructure Electrical Safety

August 9, 2024
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2026 National Electrical Code Workspace

“The Bathing Pool” / Hubert Robert (French, 1733–1808) / Gift of J.P. Morgan

Education communities have significant assets tied up in swimming pools, immersion pools, fountains, hydro-therapy installations (in hospitals and athletic training facilities) and flood control facilities (in congested, non-permeable parts of urban campuses) we have been keeping an eye on leading practice discovery for these installations in the 2020 National Electrical Code.

With electrical safety — i.e. shock protection — as the focus of this post*, the relevant parts of the 2020 NEC reside in Articles 680 and 682 are described below:

Article 680 applies to the construction and installation of electrical wiring for, and equipment in or adjacent all swimming, wading, therapeutic and decorative pools, fountains, hot tubs, spas and hydromassage bathtubs, whether permanently installed or storable, and to metallic auxiliary equipment, such as pumps, filters, and similar equipment.  The term body of water used throughout Part I applies to all bodies of water covered in this scope unless otherwise amended.

Article 682 applies to the installation of electrical wiring for, and the equipment in and adjacent to, natural or artificially made bodies of water not covered by other articles in the NEC, such as, but not limited to aeration ponds, fish farm ponds, storm retention basins, treatment ponds and irrigation (channel facilities.   Water depths may vary seasonally or be controlled.

When the 2020 NEC is released there will be hundreds (more like thousands) of experts who make their living on each NEC revision fanning out across the globe able and ready to interpret, advise and train.  We are not primarily a code training enterprise but we do get down into the weeds of electrical safety technical discussion where leading practice discovery discussion is recorded:

2020 NEC Article 680-682 Public Input | Pages 240 – 501

2020 NEC Articles 680-682 First Draft Report | Page 59 – 152

2020 NEC Articles 680-682 Public Comment Report

2020 NEC Articles 680-682 Second Draft Final Ballot

Transcripts superseded.  We refer to the 2026 Workspace linked at the top of this page.

We find interest in corrosion control, water bottle fill stations, water heating technologies, LED illumination as well as the usual editorial, correlation and concepts movement between articles.  From these transcripts it should also be plain that grounding and bonding practice, GFCI protection, luminaire location and wiring, corrosion management continue to be of primary interest in electrical safety assurance.   Related safety concepts appear in NFPA 70B and NFPA 70E.   Anything having to do with water; or the areas around water, are regions of elevated risk.

We are happy to discuss electrical safety standards any day at 11 AM Eastern time and host a monthly breakout teleconference dedicated to Electrical Power Safety in education facilities.  See our CALENDAR for the next online meeting.  We also collaborate closely with the IEEE Education & Healthcare Facilities Committee which meets online four times monthly in European and American time zones.

Issue: [16-102]

Category: Electrical, Risk Management, Water,

Colleagues: Mike Anthony, Jim Harvey, Kane Howard

*We leave the technical specifics of footcandle distribution to another, future post.


LEARN MORE:

2017 NEC changes for electrical safety in swimming pools

2020 NEC Changes (All Articles)

 

 

 

Uniform Swimming Pool, Spa & Hot Tub Code

August 9, 2024
mike@standardsmichigan.com

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water

“The Bathing Pool” / Hubert Robert (French, 1733–1808) / Gift of J.P. Morgan

2024 Uniform Swimming Pool, Spa and Hot Tub Code

READ-ONLY ACCESS

The IAPMO code development process is one of the best in the land.  Its Read-Only Access — needed for light research — is also the best in the land; unlike other ANSI accredited standards developers (who shall be un-named).   The current edition is dated 2024, with the 2027 revision accepted public input until March 3, 2025 according the schedule linked below:

2027 USPSHTC Code Development Calendar

Related:

What are Plumbing Codes?

Uniform Plumbing Code

Coronavirus in Plumbing Systems

Dostojno jest

August 8, 2024
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The Cracow University of Economics campus is located in the centre of Krakow in the close neighborhood of the main railway station and bus station Kraków Główny.  The University owns 15 buildings where lectures and classes take place, including other facilities like: language centre, library, sport facilities, canteens and cafes, career centre and university clinic.

Campus Facilities

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

Polska

Air Conditioning

August 8, 2024
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Ancient Air Conditioning | CLICK ON IMAGE

Today at 15:00 UTC we will review the latest in best practice literature for air conditioning systems.  Note that we have broken out this topic from the standing Mechanical colloquia.  Our approach features interoperability and system considerations.  Catalogs on the agenda:

ACCA

Air Conditioning System Construction & Maintenance

Air-Conditioning, Heating, and Refrigeration Institute

Standards and Guides

ASHRAE International

Standard 90.1-2022—Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings

Standard 90.4 Energy Standard for Data Centers

Acceptable Performance Standard for District Cooling Systems

ASME

Heating, Ventilating and Air-Conditioning Systems

European Standards

EN 14511 Specifies the requirements for air conditioners, liquid chilling packages, and heat pumps with electrically driven compressors.

IEEE

Occupant-Based HVAC Thermal Setpoints

International Code Council

International Building Code Interior Environment & HVAC Systems

International Mechanical Code Chapter 11 Refrigeration

NFPA

National Electrical Code Article 430: Motors, Motor Circuits and Motor Controllers

Standard for the Installation of Air-Conditioning and Ventilating Systems

Underwriters Laboratories (largely product standards, not embedded system nor interoperability titles)

Uptime Institute

Implementing Data Center Cooling Best Practices


Use the login credentials at the upper right of our home page


University of Rochester Central Utilities Plant Absorption Chiller

Issues: [11-67, 15-124, 15-135, 15-165]

Category: Energy, Mechanical

Colleagues: Mike Anthony, Larry Spielvogel, Richard Robben


 

 

Air Conditioning System Construction & Maintenance

August 8, 2024
mike@standardsmichigan.com
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Ancient Air Conditioning | CLICK ON IMAGE

The Air Conditioning Contractors Association of America is an accredited standards developer for the design, maintenance, installation, testing, and performance of indoor environment systems.   We find several ACCA best practice titles referenced as in education facility design guidelines and construction contracts.  Much of its catalog forms the foundation for the technical curricula in trade schools.  Its library is linked below:

ANSI/ACCA Home Page

It welcomes original public input and public comment on titles in its standards catalog at the link below:

ACCA Standards Development Home Page

As of this posting the ACCA has not released any titles for public comment.  We encourage our colleagues to interact directly with the ACCA standards team: Air Conditioning Contractors Association, 2800 Shirlington Rd, Suite 300, Arlington, VA 22206, (703) 575-4477, membership@acca.org.

We maintain the ACCA suite on the standing agenda of our Air Conditioning and Mechanical teleconferences.  See our CALENDAR for the next online meeting; open to everyone.

 

LEARN MORE:

 

Lingonberries

August 8, 2024
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True North Kitchen: Nordic Wild Berry Almond Smoothie

Lingonberries almost completely prevented weight gain in mice fed a high-fat diet, a study at Lund University in Sweden has found – whereas the ‘super berry’ açai led to increased weight gain. The Scandinavian berries also produced lower blood sugar levels and cholesterol.

Swedish Institute for Standards

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