Abstract: One of the most common questions in the early stages of designing a new facility is whether the normal utility supply to a fire pump is reliable enough to “tap ahead of the main” or whether the fire pump supply is so unreliable that it must have an emergency power source, typically an on-site generator. Apart from the obligation to meet life safety objectives, it is not uncommon that capital on the order of 100000to1 million is at stake for a fire pump backup source. Until now, that decision has only been answered with intuition – using a combination of utility outage history and anecdotes about what has worked before. There are processes for making the decision about whether a facility needs a second source of power using quantitative analysis. Fault tree analysis and reliability block diagram are two quantitative methods used in reliability engineering for assessing risk. This paper will use a simple one line for the power to a fire pump to show how each of these techniques can be used to calculate the reliability of electric power to a fire pump. This paper will also discuss the strengths and weakness of the two methods. The hope is that these methods will begin tracking in the National Fire Protection Association documents that deal with fire pump power sources and can be used as another tool to inform design engineers and authorities having jurisdiction about public safety and property protection. These methods will enlighten decisions about the relative cost of risk control with quantitative information about the incremental cost of additional 9’s of operational availability.
Water fountains enhance campus outdoor settings by creating serene, inviting spaces that promote relaxation and social interaction. Their gentle sounds of flowing water reduce stress, mask noise, and foster a calming atmosphere conducive to study or reflection.
Aesthetically, fountains serve as focal points, adding elegance and visual appeal to courtyards or green spaces. They attract students, faculty, and visitors, encouraging gatherings and community engagement. Environmentally, fountains can support local ecosystems by providing water for birds or plants.
Well-maintained, they symbolize a campus’s commitment to beauty and sustainability, enriching the outdoor experience and enhancing the overall campus ambiance.
The thunderbolt steers all things. —Heraclitus, c. 500 BC
After the rain. Personal photograph taken by Mike Anthony biking with his niece in Wirdum, The Netherlands
Today at 15:00 UTC we examine the technical literature about rainwater management in schools, colleges and universities — underfoot and on the roof. Lightning protection standards will also be reviewed; given the exposure of outdoor athletic activity and exterior luminaires.
We draw from previous standardization work in titles involving water, roofing systems and flood management — i.e. a cross-cutting view of the relevant standard developer catalogs. Among them:
American Society of Civil Engineers
American Society of Plumbing Engineers
ASHRAE International
ASTM International
Construction Specifications Institute (Division 7 Thermal and Moisture Protection)
As always, our daily colloquia are open to everyone. Use the login credentials at the upper right of our home page.
“Rainbow Connection”
“Tough Call” | Norman Rockwell 1949
The “lightning effect” seen in carnival tricks typically relies on a scientific principle known as the Lichtenberg figure or Lichtenberg figure. This phenomenon occurs when a high-voltage electrical discharge passes through an insulating material, such as wood or acrylic, leaving behind branching patterns resembling lightning bolts.
The process involves the creation of a temporary electric field within the material, which polarizes its molecules. As the discharge propagates through the material, it causes localized breakdowns, creating branching paths along the way. These branching patterns are the characteristic Lichtenberg figures.
In the carnival trick, a high-voltage generator is used to create an electrical discharge on a piece of insulating material, such as acrylic. When a person touches the material or a conductive object placed on it, the discharge follows the path of least resistance, leaving behind the branching patterns. This effect is often used for entertainment purposes due to its visually striking appearance, resembling miniature lightning bolts frozen in the material. However, it’s crucial to handle such demonstrations with caution due to the potential hazards associated with high-voltage electricity.
We are in the 2024–2026 ICC code development cycle, which is producing the 2027 editions of the International Codes. The 2024 IBC is the current published edition (released in 2023/early 2024). Chapter 15 (Roof Assemblies and Rooftop Structures) in the 2024 edition includes updates on topics like roof drainage, underlayment, wind resistance, occupiable rooftops, and aggregate-surfaced roofs.
Vereenigde Oostindische Compagnie | Dutch East India Company
FM Global is one of several organizations that produce technical and business documents that set the standard of care for risk management in education facilities. These standards — Property Loss Prevention Data Sheets — contribute to the reduction in the risk of property loss due to fire, weather conditions, and failure of electrical or mechanical equipment. They incorporate nearly 200 years of property loss experience, research and engineering results, as well as input from consensus standards committees, equipment manufacturers and others.
In July FM Global updated its standard FM 2510 Flood Abatement Equipment which should interest flood barrier manufacturers, standard authorities, industrial and commercial facilities looking to protect their buildings from riverline flooding conditions.
The following updates were proposed and mostly adopted:
Modifications to the opening barrier protocol to include water performance testing at lower depths;
Additional tests that apply to open-cellular rubber compounds (i.e., foam-type rubber) which are commonly used as gaskets on flood barriers need to be added to the Standard to sufficiently assess their quality;
Addition of adhesive testing. Many barrier designs use adhesives to bond the gasket material to the barrier. Adhesives are not addressed under the current protocol; Modify the flood abatement pump section to clarify approval of pump packages vs. wet-end only;
Additional requirements for electric drive and submersible flood pumps;
Modifications to backwater valve section to be inclusive of all types of “backwater valves” besides the traditional check valve.
Additional requirements for waterproofing products for building penetrations. Products in this category include collars, plugs, elastomeric seals, and types of putty.
This standard also contains test requirements for the performance of flood barriers, flood mitigation pumps, backwater valves, and waterproofing products for building penetrations, as well as an evaluation of the components comprising these products to assure reliability in the barrier’s performance.
While there are a number of noteworthy colleges and universities that have grown near rivers and lakes — twenty-five of which are listed HERE — severe weather and system failures present flooding risks to them all.
Another Data Sheet — I-40 Floods — was updated in October. Both Data Sheets are available for download at the link below:
You will need to set up (free) access credentials.
You may contact FM Global directly: Josephine Mahnken, (781) 255-4813, josephine.mahnken@fmapprovals.com, 1151 Boston-Providence Turnpike, Norwood, MA 02062
Our “door” is open every day at 11 AM Eastern time to discuss any consensus document that sets the standard of care for the emergent #SmartCampus. Additionally, we dedicate one session per month to Management and Water standards. See our CALENDAR for the next online teleconference. Use the login credentials at the upper right of our home page.
Water is essential for sanitation and hygiene — and proper sanitation is essential for protecting water sources from contamination and ensuring access to safe drinking water. Access to safe water and sanitation is crucial for preventing the spread of waterborne diseases, which can be transmitted through contaminated water sources or poor sanitation practices. Lack of access to safe water and sanitation can lead to a range of health problems, including diarrheal diseases, cholera, typhoid, and hepatitis A.
On the other hand, poor sanitation practices, such as open defecation, can contaminate water sources, making them unsafe for drinking, bathing, or cooking. This contamination can lead to the spread of diseases and illness, particularly in developing countries where access to clean water and sanitation facilities may be limited.
We track the catalog of the following ANSI accredited standards developers that necessarily require mastery of building premise water systems:
American Society of Heating, Refrigerating and Air-Conditioning Engineers: ASHRAE develops standards related to heating, ventilation, air conditioning, refrigeration systems — and more recently, standards that claim jurisdiction over building sites.
American Society of Mechanical Engineers: ASME develops standards related to boilers, pressure vessels, and piping systems.
American Water Works Association: AWWA is a standards development organization that publishes a wide range of standards related to water supply, treatment, distribution, and storage.
ASTM International: ASTM develops and publishes voluntary consensus standards for various industries, including water-related standards. They cover topics such as water quality, water sampling, and water treatment.
National Fire Protection Association: NFPA develops fire safety standards, and some of their standards are related to water, such as those covering fire sprinkler systems and water supplies for firefighting within and outside buildings. We deal with the specific problems of sprinkler water system safety during our Prometheus colloquia.
National Sanitation Foundation International (NSF International): NSF International develops standards and conducts testing and certification for various products related to public health and safety, including standards for water treatment systems and products.
Underwriters Laboratories (UL): UL is a safety consulting and certification company that develops standards for various industries. They have standards related to water treatment systems, plumbing products, and fire protection systems.
‘Weird, totally unnecessary, and absurd’ — UVA students raise concerns over tampon dispensers in men’s restrooms
* The evolution of building interior water systems has undergone significant changes over time to meet the evolving needs of society. Initially, water systems were rudimentary, primarily consisting of manually operated pumps and gravity-fed distribution systems. Water was manually fetched from wells or nearby sources, and indoor plumbing was virtually nonexistent.
The Industrial Revolution brought advancements in plumbing technology. The introduction of pressurized water systems and cast-iron pipes allowed for the centralized distribution of water within buildings. Separate pipes for hot and cold water became common, enabling more convenient access to water for various purposes. Additionally, the development of flush toilets and sewage systems improved sanitation and hygiene standards.
In the mid-20th century, the advent of plastic pipes, such as PVC (polyvinyl chloride) and CPVC (chlorinated polyvinyl chloride), revolutionized plumbing systems. These pipes offered durability, flexibility, and ease of installation, allowing for faster and more cost-effective construction.
The latter part of the 20th century witnessed a growing focus on water conservation and environmental sustainability. Low-flow fixtures, such as toilets, faucets, and showerheads, were introduced to reduce water consumption without compromising functionality. Greywater recycling systems emerged, allowing the reuse of water from sinks, showers, and laundry for non-potable purposes like irrigation.
With the advancement of digital technology, smart water systems have emerged in recent years. These systems integrate sensors, meters, and automated controls to monitor and manage water usage, detect leaks, and optimize water distribution within buildings. Smart technologies provide real-time data, enabling better water management, energy efficiency, and cost savings.
The future of building interior water systems is likely to focus on further improving efficiency, sustainability, and water quality. Innovations may include enhanced water purification techniques, decentralized water treatment systems, and increased integration of smart technologies to create more intelligent and sustainable water systems.
The first mover in building interior water supply systems can be traced back to the ancient civilizations of Mesopotamia, Egypt, and the Indus Valley. However, one of the earliest known examples of sophisticated indoor plumbing systems can be attributed to the ancient Romans.
The Romans were pioneers in constructing elaborate water supply and distribution networks within their cities. They developed aqueducts to transport water from distant sources to urban centers, allowing for a centralized water supply. The water was then distributed through a network of lead or clay pipes to public fountains, baths, and private residences.
One notable example of Roman plumbing ingenuity is the city of Pompeii, which was buried by the eruption of Mount Vesuvius in 79 AD. The excavation of Pompeii revealed a well-preserved plumbing system that included indoor plumbing in some houses. These systems featured piped water, private bathrooms with flushing toilets, and even hot and cold water systems.
The Romans also invented the concept of the cloaca maxima, an ancient sewer system that collected and transported wastewater away from the city to nearby bodies of water. This early recognition of the importance of sanitation and wastewater management was a significant advancement in public health.
While the Romans were not the only ancient civilization to develop indoor plumbing systems, their engineering prowess and widespread implementation of water supply and sanitation infrastructure make them a key player in the history of building interior water systems.
The University has a strong reputation for research and innovation in many fields related to the prevention of backflow incidents:
Viterbi School of Engineering has a dedicated Environmental Engineering program that focuses on water quality and management. This program has faculty members who are experts in water treatment and distribution systems, including backflow prevention technologies. The school also offers research opportunities for graduate students to work on water-related projects, including those related to backflow prevention.
Keck School of Medicine has a Department of Preventive Medicine that conducts research on environmental health, including waterborne diseases and contamination. This department has published research on the prevention of waterborne disease outbreaks and the importance of backflow prevention measures in protecting public health.
The USC Environmental Health and Safety department is responsible for overseeing the safety and compliance of the university’s facilities, including its water systems. EH&S works closely with the university’s Facilities Management Services to ensure that backflow prevention measures are in place and maintained.
The USC Foundation drafts definitions and specifications covering cross-connection control and the assemblies required for the prevention of backflow.
University hospital and research labs generate complex effluents containing hazardous chemicals, pharmaceuticals, cytotoxic drugs, radioactive isotopes, pathogens, and heavy metals. These substances are often toxic, persistent, or biologically active. Today at the usual hour we update our understanding of best practice discovery, administration and promulgation.
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Hospital and research labs generate complex effluents containing hazardous chemicals, pharmaceuticals, cytotoxic drugs, radioactive isotopes, pathogens, and heavy metals. When discharged untreated into municipal sewers, these substances can:
Disrupt biological treatment processes by killing beneficial microbes in wastewater plants
Pass through treatment systems into rivers and drinking water sources
React with other wastes, forming new toxic compounds
Violate environmental regulations and expose institutions to fines
Dedicated collection, pretreatment, and specialized disposal systems allow safe neutralization or destruction of these wastes. This protects aquatic ecosystems, prevents the spread of antibiotic resistance, safeguards community water supplies, and fulfills the ethical responsibility of research institutions to minimize environmental harm.
The Great Lakes contain enough fresh water to cover the land area of the entire United States under 3 meters of water.
We collect 15 video presentations about Great Lake water safety and sustainability prepared by the 8 Great Lake border state colleges and universities and their national and international partners in Canada.
In a state whose land mass was formed by glaciers, has there been climate change in its 10,000 – 15,000 year past? Did the glaciers melt because of sport utility vehicles made in Detroit? We refer you to the Academy of Projectors described in Book Three of Jonathan Swift’s 1726 satire on academia in “Gulliver’s Travels”
When the wicked problems of peace and economic inequality cannot be solved, political leaders, and the battalions of servile administrative muckety-mucks who report to them, resort to fear-mongering about an imagined problem to be solved centuries hence assuming every other nation agrees on remedies of its anthropogenic origin. We would not draw attention to it were it not that large tranches of the global academic community are in on the grift costing hundreds of billions in square-footage for research and teaching hopelessness to our children and hatred of climate change deniers.
Before the internet is scrubbed of information contrary to climate change mania, we recommend a few titles:
A good understanding of waves in shallow water, typically in coastal regions, is important for several environmental and societal issues: submersion risks, protection of harbors, erosion, offshore structures, wave energies, etc.https://t.co/E6T2woxQ67@_CIRM@CIGLR_UMpic.twitter.com/DUnk6rlFW9
New update alert! The 2022 update to the Trademark Assignment Dataset is now available online. Find 1.29 million trademark assignments, involving 2.28 million unique trademark properties issued by the USPTO between March 1952 and January 2023: https://t.co/njrDAbSpwBpic.twitter.com/GkAXrHoQ9T
