president’s report december 2017 - aspe la · to revise aspe/ansi 45 (2013): siphonic roof...

PRESIDENT’S REPORT Thura Zin, CPD, GPD President

inside...inside...

December 2017 Volume 17 Issue 12

Calendar of Events page 2Technical Report page 3Legislative Report page 4Help Wanted page 5

Monte Carlo pics & video link page 10Education Report page 11In The News... page 30

continued on page 20

December 2017

See inside for Details...

Date: December 6, 2017

Time: Social - 6:00 pm Dinner - 7:00 pm

Place: Monterey Hill Restaurant 3700 Ramona Blvd. Monterey Park, CA (323) 264-8426

Program: 2017 LA Plumbing Code Chapter 9, Article 4, Division 15, 16, & 16A – Defined

Speaker: Mr. Domenico Barbato, P.E. Chief, Mechanical Division Los Angeles Dept. of Bldg & Safety

I hope everyone enjoyed a wonderful Thanksgiving dinner together with your family. I wish you all the best and the happiest holiday season ever.

The timing of November’s meeting was not great due to the LA Dodgers World Series final game. Although 62

people did RSVP, only 50 showed up. The topic was very good regarding Medical Gas presented by Christoph Lohr, the VP Tech from the Phoenix Chapter. I’d like to thank him for his presentation. He discussed pre-design

awareness, design coordination and construction administration. He also mentioned the 2018 NFPA code updates.

We had our annual Holiday party, the Monte Carlo Night, on Saturday, November 11th at the Airtel Plaza Hotel in Van Nuys. About 70 people attended and everyone had a good time! I’d like to thank Jeff Atlas for taking care of the event. See pics & video on the ASPE LA Facebook page.

We had another chapter event, our very first WOA event, which was “Women of ASPE LA Shoe Design”. Thanks to our chapter WOA Chairperson Ms. Linda Deunay. The winner of the first event is Ms. Laura Bigge and the runner-up is Ms. Sarah Deunay. Congratulations Laura and Sarah. There will be more events to come. Please contact Linda, if you have ideas for future events. Also, she is organizing a WOA Blanket Drive and plans to donate the blankets to the LA Mission for the homeless. Great job Linda and if you and your family want to participate, please contact Linda or any of the Board members.

Starting January 2018, ASPE-LA will be increasing the meeting fee

for non-members

ASPE NEWS

If you are an ASPE member, go to FACEBOOK and join the new

ASPE Los Angeles Group!

https://www.facebook.com/groups/ASPELA/

2017-2018 TECHNICAL & SOCIAL CALENDAR

DEC. 6, 2017 “2017 LA PLUMBING CODE CHAPTER 9, ARTICLE 4, DIVISION 15, 16 & 16A - DEFINED”(SN #17-15)SPEAKER: MR. DOMENICO BARBATO, P.E.

Chief of Mechanical DivisionCity of Los Angeles Building & Safety

JAN. 10, 2018 “ULTRA-HYGIENIC SANITARY WASTE PIPING SYSTEMS”(SN #18-01)SPEAKER: MR. SCOTT STEINDLER

Western Regional Manager – BLUCHER USA

FEB. 7, 2018 “SPLASH PADS”(SN #18-02)SPEAKER: MR. PETER KRAUT, P.E.

President, South Coast Engineering Group

MARCH 7, 2017 “COPPER PIPE - BENEFITS & CONCERNS BY MOST PLUMBING ENGINEERS”(SN #18-03)SPEAKER: MR. HAROLD MORET

Project Manager & Piping Applications Specialist, CDA

APRIL 4, 2017 “MODERN DOMESTIC WATER PRESURE BOOSTING SYSTEMS”(SN #18-04)SPEAKER: MR. ROBERT GALAVIZ

Business Development GroupDawson Company

DEC. 6, 2017

ASPE NEWS

TECHNICAL REPORTVivian Enriquez, CPDV.P. Technical

of the first Women of ASPE (WOA) scholarship to help a deserving member attend an ASPE educational event, and she has written a brief article on her experience to help others get the most out of participating in ASPE events.

Volunteers are needed to revise ASPE's siphonic roof drainage standard A Working Group is being convened to revise ASPE/ANSI 45 (2013): Siphonic Roof Drainage Systems, and ASPE seeks volunteers from the following interest groups: engineers, users, producers, and general interest. To apply, please fill out the application here. Chosen members will be notified within two weeks, and work will commence in early 2018. All work will be conducted online or via conference call.

Start next year off right by brushing up on the basics ASPE is hosting a Basic Plumbing Design workshop at our headquarters near Chicago's O'Hare Airport on January 25-26 to teach the fundamentals of designing storm drainage, natural gas, domestic cold and hot water, and sanitary sewer systems, as well as how to properly coordinate these utilities with architects and structural engineers. You will earn 1.2 CEUs or 12 PDHs for attending, and registration is open at aspe.org/BasicsWorkshop.

Share your knowledge at the 2018 ASPE Convention & Expo ASPE's Education Committee is currently taking presentation proposals for the 2018 ASPE Convention & Expo in Atlanta on September 28 to October 3. In addition to plumbing system design topics, we are looking for contractor-related presentations and sessions by our industry partners. You can learn more and submit your presentation at aspe.org/callforpresenters. The deadline to submit a proposal is January 15.

Alfred Steele Scholarship applications are due January 31 The Alfred Steele Scholarship is open to Student Members of ASPE and the sons/daughters of ASPE Members. Applicants must have a 3.0 GPA or higher and be enrolled in, or plan to attend, an engineering program at a college or university on a full-time basis. Go to aspe.org/SteeleScholarship for more details.

ASPE College of Fellows nominations are due January 31To nominate a member for this lifetime honor, visit aspe.org/fellows or contact Stacey A. Kidd for more information. Inductees will be announced at the 2018 ASPE Convention & Expo in Atlanta.

The November 1, 2017 technical meeting, was presented by Mr. Christoph Lohr, Plumbing Technical Leader of Henderson Engineers, in Phoenix, Arizona, as guest speaker. His presentation on “Medical Gas: What Every Engineer Should Know” included a variety of items that every engineer should be aware of on medical gas systems design to promote patient well-being and safety. He also discussed some lessons learned and went over some differences between the upcoming 2018 edition of NFPA 99 compared to previous editions. It was a very informative presentation, so on behalf of the ASPE-LA Board, we want to thank Mr. Lohr. For those that wanted to get a copy of his presentation, we are including a PDF copy with this month’s issue of ASPE-LA Newsletter.

Our Technical Calendar for 2018 is starting to fill-up, we have quite a line-up of good speakers and topic up to April 2018, so if anyone want to have a specific topic or know of a good speaker, please don’t hesitate to contact me or send e-mail to any of the Board of Directors.

At the December 6, 2017 meeting, we will have no other than Mr. Domenic Barbato, Chief, Mechanical Division of LADBS, as guest speaker. He will be presenting on the 2017 Los Angeles Plumbing Code, Chapter 9, Article 4, Division 15, 16 & 16A – Defined.

Please note that the January meeting will be held on January 10, 2018, instead of January 3, 2018. Please put this on your calendar. We will have Mr. Scott Steindler, West Regional Manager of Blucher USA, as guest speaker. He will be presenting on “Ultra-Hygienic Sanitary Waste Piping Systems”.

See you all at the ASPE-LA Meeting onDecember 06, 2017.

Latest news from ASPE Pipeline, Vol. 10, No. 23, November 9, 2017: WOA scholarship recipient reflects on the 2017 ASPE Technical Symposium This year's event was the second largest-attended Technical Symposium in ASPE's history, due in part to numerous first-time attendees such as Kari Rosteck, EIT, a Mechanical Designer with Stantec. Kari was the recipient

ASPE NEWS

2017 WaterSense Partners of the YearSince the program began in 2006, WaterSense labeled products have helped Americans save 2.1 trillion gallons of water and $46.3 billion in water and energy bills. In 2017 alone, WaterSense labeled products saved 534 billion gallons of water. By working together, WaterSense partners across the country continue to make a difference every day.

WaterSense recognizes Sustained Excellence Award winners, WaterSense Partners of the Year, and Excellence Award winners for helping to advance and promote WaterSense and water efficiency throughout 2016. For a complete list of the winners, please visit: www.epa.gov/watersense/watersense-awards

2017 WaterSense Sustained Excellence Award (2 of 7) Winners for organizations we may know:

• Delta Faucet Company: three-time WaterSense Sustained Excellence winner, educated consumers and trade professionals about the WaterSense program and the benefits of WaterSense labeled products through a variety of initiatives, including efforts to help communities in need. To support clean water efforts in Flint, Michigan, Delta donated WaterSense labeled lavatory faucets and showerheads to local plumbers who volunteered to help affected residents.

• Kohler Co.: earned its fifth Sustained Excellence Award by marketing WaterSense nationwide, donating its WaterSense labeled products to various events and charitable causes, and releasing a new, cutting-edge, water-efficient toilet. Kohler introduced the 1.0-gallon, WaterSense labeled Highline toilet in 2016, which combines gravity with a precision engineered design that creates a stronger flush with less water.

2017 WaterSense Partners of the Year (1 of 5):• American Standard: Two-time Manufacturer Partner

of the Year Award winner American Standard, part of the global LIXIL Corporation, promoted its existing WaterSense labeled products through partnerships and outreach, but also looked toward the future with

LEGISLATIVE REPORTKook DeanV.P. Legislative

new water-efficient technology and research. To raise awareness for Fix a Leak Week 2016, it held a Facebook contest and gave away 49 WaterSense labeled Portsmouth Widespread faucets. In May, American Standard was a key part of the Beauty in Motion nationwide tour launched by LIXIL to celebrate its newly designed WaterSense labeled showerheads, faucets, and ultra-high efficiency toilets. The trucks toured the country and made a total of 136 stops during 2016, reaching more than 6,000 professionals and consumers with their mobile exhibit.

2017 WaterSense Excellence Award Winners (1 of 8):• Metropolitan Water District of Southern California:

offers a comprehensive program of incentives and rebates to advance conservation and promote WaterSense labeled products throughout its large service area. Metropolitan’s research-based advertising and outreach campaign uses a variety of creative, high-impact messaging with billboards, video, print, radio, digital marketing, and social media to promote water savings in many ways, including rebates for WaterSense labeled products, to Southern Californians. The agency’s online water conservation portal, www.bewaterwise.com, provides an extensive list of WaterSense labeled products. Residents and businesses have taken advantage of rebates to purchase more than 114,000 WaterSense labeled toilets and nearly 15,000 weather-based irrigation controllers.

For more additional information; please visit: www.epa.gov/watersense/watersense-awards.

The total number in attendance was

50!plus our speakers!

WHO Showed up?Attendance for the November 2017 Meeting...

ASPE NEWS

John FoleyVice President

Tel: (800) 594-3300Cell: (310) 863-5920Fax: (818) 348-4106

[email protected]

Alex Jimenez

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Plumbing Engineer Position:-Extensive experience working in MEP consulting engineering office.-Effectively manage Plumbing and design projects by satisfying clients' needs, meeting budget expectations and project schedules.-Must know how to lay out and size plumbing systems including sump pumps, booster pumps and sewage ejectors-Working knowledge of the latest MS word, MS excel, and AutoCAD. Revit is a big plus -Good communication skills-Written and oral -Practical knowledge of plumbing and building codes (UPC)

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To apply send resumes to [email protected] [email protected]

Feel free to visit our website, https://khalifehassociates.com/ for more information on our company

Khalifeh and Associates, IncConsulting Engineers 13465 Beach Ave.,Suite B Marina Del Rey, CA 90292Tel: 310-305-1555 • Fax: 310-305-1550

To see our full job descriptions please click here for plumbing engineer and here for mechanical engineer.

Mechanical engineer position:-Extensive experience working in MEP consulting engineering office.-Must know how to lay out and size equipment, prepare specifications.-Working knowledge of the latest MS word, MS excel, and AutoCAD. Revit is a big plus-working knowledge of Energy Pro, Title 24 program-Practical knowledge of mechanical and building codes (UMC) -Bachelor’s degree in mechanical engineering-design of building HVAC systems for institutional, commercial and residential applications-Good communication skills in English-Written and oral-LEED certification is a plus-Knowledge and experience with efficient and sustainable Mechanical system designs is a plus-Southern California Resident.Both positions offer Highly competitive pay, 401k with 4% match, and employee focused Health Benefit Package

















ASPE NEWS

ASPE NEWS

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ASPE NEWS

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ASPE NEWS

APSE 2017Monte Carlo Night

&Holiday

Extravaganzaclick here for video

https://youtu.be/vMEFQsjN3ks

ASPE NEWS

One Member ’s Opinion

EDUCATION REPORTHaig Demergian, PE, CPDV.P. Education

Continued on page 18

One Mission. One Focus. No Distractions.Emergency equipment isn’t just what we do. It’s all we do. Your safety is too important to entrust to just anyone. All Guardian emergency eyewash and shower products are inspected, fully assembled, and 100% water-tested in our Chicago facility, which means you receive the most reliable emergency equipment each time, every time. Your safety isn’t just a priority. It’s our only priority.

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WATER, PLUMBING AND HYDRONICS SYSTEMS

1. Water definitions and qualities. Water chemical formula is H2O. In the liquid state water is a transparent and nearly a colorless substance. Water is an excellent solvent. Every where water flows, either to the ground, thru the air, or thru our bodies, it moves valuable chemicals, That is why water is called “The Universal Solvent”. Water is capable to dissolve more substances than any other liquid.

Water is the only substance which can be found on earth on all physical states: solid (ice), liquid (lakes, rivers, oceans) and vapors (clouds). But we will not find any place on this earth, pure water H2O. Water, as an excellent solvent, will always contain a combination of minerals, gases, suspended particles, etc.

Water is an essential substance required for the life of all vegetation, animal world, and population. Without water

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In addition natural water will also be populated by various viruses, bacteria and microbes which are plenty on the ground and above ground where natural water is flowing. To study the influences of water transmitted diseases over living organisms and plants, a group was organized and was named Microbiology.

ASPE NEWS

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ASPE NEWS

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2017TechSymposiumASPE

DEADLINE

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October 19-22, 2017

ASPE NEWS

MORE INSIDE™ :: VALUE BEYONDOUR PIPING SOLUTIONS

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ASPE NEWS page 15

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ASPE NEWS page 16

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Gasketed, heavy wall, solvent weld,C900/C907 pressure and non pressure,ultrarib, backwater PVC drainage fittings

Flexible corrugated stainless steeltubing, fittings and accessories

Complete line of water coolers, drinkingfountains and HydroBoost bottle fillingstations for both indoor and outdoor

applications

ASPE NEWS page 17

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ASPE NEWS page 18

OpiniOn: continued from page 11

Microbiology, as a science is a relatively new, which started to study bacteria, viruses and microbial life at the beginning of 20th Century, after Dr. Louis Pasteur, Dr. Robert Koch and others, demonstrated to academicians and scientific organizations, that all illnesses are the result of activities of viruses or microbes or bacteria.

Viruses and microbes and bacteria are the first form of life on this earth. We are fortunate that they left behind fossils. Based upon studies of ancient sites it is estimated that bacteria, viruses and microbes were present about 3.5 billion years ago. Compared with fossils of “homo sapiens” (ancestors of humans) whose fossils appeared approximately 200,000 years ago, shows the viruses and microbes and bacteria had plenty of time to develop and specialize.

Today we have tens of thousands species of highly specialized bacteria, viruses and microbes living in the water, air, our bodies, underground and elsewhere. This makes the work of microbiologists to find a vaccine, very difficult and time consuming.

For instance: common cold is produced by viruses which enters our body when we inhale. Specialized laboratories work hard to discover a vaccine to be administrated to the population to help our immune system to destroy the virus Discovery of a vaccine, testing it, approvals, packaging and make it available to the population takes an average of 3 to 5 years. When the next epidemic of flu comes, the vaccine produced, is already obsolete, because the new virus is “mutated” and the vaccine is ineffective.

The main reasons they survived for so long is that viruses and bacteria multiply exponentially, asexually and they poses the capacity to “mutate” to resist extreme environmental changes.

I am not a doctor or microbiologist, and my education and experience is in engineering. But I am fascinated and interested, to learn more about bacteria, viruses and microbes. As a Plumbing engineer, I designed many potable hot and cold water distribution systems for various structures. The subject of transmission of viruses, bacteria and microbes in potable water systems, was and is a prime concern of engineering societies as ASHRAE, ASPE and others. I am also concerned, because Legionella outbreaks are on the rise. CDC reports that about 5,000 cases of Legionella are reported each year in USA. Some of these cases results in patients who for hot water and do not survive.

Recent published documents (see ANSI/ ASHRAE 188- 2015 Legionnelosis risk management) suggest that transmission of viruses, bacteria and microbes in potable water systems can be solved primarily by proper design of water systems and proper maintenance. This is a huge responsibility and liability for Plumbing engineers, designers, contractors and owners. Without specific design directions, ANSI/ASHRAE Standard 188-2015, is very confusing and will be a good field of litigation, for lawyers. It also will require additional design fee, and increase the cost of construction, to comply with all the recommendations included in ANSI/ASHRAE Standard 188-2015, especially for construction of health care facilities.

Center for the Disease Control (CDC) describes Legionella Pneumophila as respiratory disease caused by a bacteria called Legionella. The bacteria were discovered after a 1976 outbreak in a Philadelphia Convention center of the American Legion. A total of 127 were affected from a type of pneumonia, and 12 died. More information about Legionella history and outbreaks, review cdc.gov/legionella.

I read several proposed solutions to limit or stop the growth of Legionella bacteria in plumbing systems. Some of them suggest temporarily increasing the hot water temperature to 160°F and re-circulating the super hot water, throughout the system. This is supposed to kill all the bacteria in the plumbing system , but in the mean time, will make the hot water system subject to scalding especially young children, older persons and people with disabilities. Unfortunately, recirculation of super hot water will not reach the entire piping system, for existing buildings, which were installed with a lot of “dead ends”.

All vertical branches serving plumbing fixtures will not be affected by the super hot water. These “dead ends” will contain enough live bacteria to start new colonies of millions bacteria. In addition, since plumbing systems are “open systems”, every time a plumbing fixture is used, new bacteria will be admitted in the system from municipal water system. We know that municipal potable water is allowed, by EPA Standards, to have small percentage of Ecoli and other bacteria. If temporary increase in water temperature will be the procedure to destroy bacteria, then each fixture using hot water must be equipped with a “point of use ”thermostatic mixing valve”, to limit delivery of hot water to the fixture at 105°F to 110°F. Also, the water heater, or other equipment providing hot water, shall be capable to deliver water at 160°F. Another suggestion to control bacteria, is to temporarily add additional chlorine, and recirculate in the


ASPE NEWS page 19

page 14 ASPE NEWS

Ric SeRafin Tel. 626.797-9710 PresidenT Fax 626.798-4659 C.e.O email: [email protected]

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lAArS heAtinG SyStemS…… WAter heAter And BOilerS

mC dOnnell & miller………. leVel, flOW, SAfety COntrOlS

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GARY REDCHERPRESIDENT

5515 A. North Peck Road • Arcadia, California 91006 • FAX (626) 401-9034

GEORGE KAUFFMAN PLUMBING

GARYREDCHERPLUMBINGCOMPANY DBA

2 Saddleback Cove • P.O. Box 1088 • Travelers Rest, SC 29690 • Phone (864) 834-4102 • Fax (864) 834-3518 • E-mail: [email protected]

T S

For more than half a century T&S Brass has set thestandard for excellence in the commercial plumbingindustry. Since 1947, we’ve earned a reputation forunparalleled craftsmanship and service.Today,T&S

produces a full line of faucets, fittingsand specialty products for thefoodservice, industrial, commercialplumbing, and laboratory markets allacross the world.T&S engineers have

the expertise to custom design certain parts tomeet your specific needs. And thanks to ourexclusive 24-hour Quick Ship program, all ordersgo out the same day they’re placed. Built into eachof our products is a pride in craftsmanship and acommitment to customer service that make T&Sthe most reliable plumbing supplier in the industry.

YO U C A N ’ T S P E L L C R A F T S M A N S H I P W I T H O U T T & S .

T&S plumbing products represented in Los Angeles by:Price Enterprises 562.803.8833Specification Sales (909) 594-7088

CPMCACalifornia Plumbing & Mechanical

Contractors Association

645 West 9th StreetSuite 700Los Angeles, CA [email protected]

Toll Free: (877) 481-3040Tel: (213) 417-9177Fax: (213) 417-9180

www.cpmca.org

Chip MartinExecutive Director

(562) 921-6770FAX: (562) 921-8150

13450 Imperial HighwaySanta Fe Springs, CA 90670

Ken Borgquist

ASPE NEWS page 20

Again, ladies from our chapter, you are not automatically enrolled in WOA. You need to enroll into this program yourself. If you are interested in becoming part of the group and receive updates on the various programs WOA is working on, please contact Stacey Kidd, at [email protected] or contact a Board member.

Something else I’d like to share with all LA members: Our chapter got awarded by the Society the Chapter Award of Merit and Membership Growth Award at the last ASPE Technical Symposium. Thanks to VP membership John and to all Board of Director members, our chapter membership growth between October 2016 and November 2017 is 12.9% and since October 2014 is 15.38%. Keep on going. Contact John for new membership benefits. Ask how you can get free dinners at our monthly meetings.

Last month we lost 2 members and are currently down to 210. Fellow LA members, do you have any problems regarding maintaining your ASPE membership? If so, please contact me or any Board member so we can work together to help you stay as a member. If any ASPE LA Members are suffering an unexpected hardship that strains their relationships, careers or finances, please

President: continued from page 1

continued from page 11

Joe Cunningham, LEED-APDirector, West anD northWest regions

ZURN PLUMBING PRODUCTS GROUP1801 pittsburgh Avenue

erie, pA, u.s.A. 16502

PHONE: 909-467-8107CELL: 714-321-8842

FAX: 805-226-2513E-MAIL: [email protected]

www.zurn.cOmZURN ENGINEERED WaTER SOLUTIONS

contact me. If you or an immediate family member needs assistance, please contact me or any Board member.

Again, starting next year ASPE-LA will increase the meeting fee for non-members, so please join and get free dinners at our monthly meetings. I’d like to share details from the 2017 Technical Symposium in Canada. We got a lot of positive feedback. Our Region 4 had a total of 43 people who attended. Among that group, we had eight new members, 14 first timers, 4 AYP and 6 speakers. LA and San Francisco Chapters had the largest attendance from the Region.

Also, the Society is looking for Region 4 expansion in Hawaii and Tucson, Arizona. If you know any plumbing engineers or sales representative in Hawaii, please let the Region 4 president know or contact me.

If you have an idea for a group activity which will bring our ASPE families together, please let me or our Board members know. See you all at the December meeting.

Alex Jimenez

5375 E Hunter Avenue Anaheim, CA 92807 Phone: 714‐888‐2444 Fax: 714‐888‐2448

Cell: 909‐203‐2008 E‐Mail [email protected]

Jeff Atlas

5375 E. Hunter Avenue • Anaheim, CA 92807Phone: 714-888-2444 • Fax: 714-888-2448

Cell: 213-999-0167 • E-Mail: [email protected]

ASPE NEWS page 21

Sponsored by

Women ofASPE

To join WOA, email [email protected] more information, visit aspe.org/woa

Dedicated to engaging, retaining, and advancing women in the plumbing design industry through:

3 Mentoring programs3 Membership outreach3 Partnerships with industry-related

associations 3 Educational and leadership offerings

And we have the extensive product line to prove it.When you’re specifying for the next big job, you’re also putting your name on the line. That’s why T&S off ers a vast selection of high-quality products that meet required codes and compliances — no matter the application. And with a companywide commitment to staying at the forefront of today’s evolving industry, it’s no wonder engineers everywhere rely on T&S when it matters most.

For in-depth product information, crossover assistance and other helpful resources, visit tsbrass.com.

PLUMBING.

WE KNOW

T&S plumbing products represented in Los Angeles by: Specifi cation Sales - 909-594-7088

TSB_0592 2015 ASPE Pubs.indd 8 12/18/14 10:23 AM

T&S plumbing products reresented in Los Angeles by: Delco Sales 714-888-2444

ASPE NEWS page 22

Approved for more applications than any other press system

For residential, commercial and industrial projects, Viega provides more

press fitting system solutions for engineers than any other manufacturer.

The Viega MegaPress® system for black iron is the only press fitting

solution for both hydronic and gas applications. Viega MegaPressG

approvals/listings for natural gas include UPC, CSA, ICC, TSSA and LA

City Lab. Viega MegaPress approvals/listings for hydronic, fire protection

and compressed air systems include UMC, UL, FM, ICC and TSSA. Viega

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ASPE_LA_CALI_Newsletter_halfpage.indd 1 6/18/14 10:40 AM

plumbing system of super chlorinated water. The situation with the “dead ends” mentioned above will apply, and the intention to kill all bacteria will not work. Definition of potable waterThe big puzzle in my mind is that the acceptable definition of potable water to be furnished by water purveyors is not pure H2O. The EPA definition of potable water allows small amounts of various minerals and salts, plus a small amount of E coli (which is a species of bacteria). For instance, potable water, delivered by Los Angeles Department of Water and Power (DWP), after all water treatments, includes various quantities of chemicals such as: carbonates, bromate, fluoride, halo acetic acids, lead, trihalomethanes, and coliform bacteria among others.

Exponential growth of bacteria All bacteria reproduce by exponential, asexual reproduction, which results in cell division. We know that single cell bacteria have extremely rapid way to multiply. For instance, one bacterium will divide, and now we have two. These two will divide again and we have four. Four will divide again and we have eighth. This is called exponential growth. This process of multiplication repeats, and in a matter of few hours the new colony of millions of bacteria is formed.

In the lab the growth of bacteria was monitored, and in the average, they found several phases:1. Lag phase. Bacteria initially adjust to the new

environment (test tube or dish). About 8 hours.2. Exponential phase. Bacteria start dividing. About 18

hours.3. Stationary phase. When the space becomes too small or

the nutrition is exhausted, bacteria stops growing. About 5 hours.

4. Death phase. Eventually bacteria show loss of viability and dies in about 10 hours.

Water piping for HVAC Water piping serving HVAC projects (hot water and chilled water) is a “closed system”, where the water filled at the beginning, is continuously re-circulated. Make-up water, in small quantities, is added to compensate water lost due to leakage of the system. The water is maintained at temperatures of 180-200°F, for hot water which kills bacteria and 40-45°F for chilled water, which do not allow bacteria to multiply. Special chemicals (bactericides) can be added to the system to keep bacteria from multiplication or kill them.

Another system is the water from the cooling tower, (condensing water), is an exception. This water system is



ASPE NEWS page 23

an “open system” because condensing water becomes in contact with outside air and will add more bacteria and viruses, when the cooling tower water runs thru the cooling tower.

A recent article published in Water Conditioning and Purification of September 2017 prepared by Timothy Keister CWT, FAIC, entitled “Using Softened Water for Cooling Towers” makes the argument for the benefits of using soft water for Cooling Towers.(Very interesting article with diagrams and calculations to justify his proposal)

Potable water piping.Potable water piping serving Plumbing projects is an “open system”, where every time a faucet is open for flushing a Lavatory, WC, Sink, Urinal, etc., a fresh quantity of municipal water is admitted into the system. This fresh water admits in the Plumbing systems: Salts, impurities and bacteria allowable in the municipal potable water systems.

Therefore, the proposed procedures to prevent growth of bacteria for HVAC projects must be different than the procedures for Plumbing projects.

Some bacteria produce a “biofilm”, which will deposit inside the pipes, and will protect other bacteria covered by “biofilm” from being destroyed by biocides or temporary

super hot water (160°F) circulated occasionally.

The way I see it, the water entering the building from municipal piping should be free of any bacteria, viruses or microbes and to have minimal residual salts, minerals or other chemical compounds. For instance: minerals, as calcium carbonate (CO3Ca) or magnesium carbonate (CO3Mg), will eventually deposits inside the pipes and equipment, will produce a scale, which will increase the friction loss (more energy to move the water), will corrode the pipe and will be an excellent place for bacterial development. Various USA zones contain water with high concentration of these compounds (hard water). Removing them from water entering the building will save a lot on energy and maintenance. This is beneficial for Plumbing and HVAC systems.

Plumbing water piping disinfection.Pipes and materials used for potable water piping systems shall be certified to comply with NSF (National Sanitation Foundation) Standard 61.

Piping shall be delivered at site with caps on all open ends and stored to prevent contamination with foreign particles as sand, dust, rust, etc.



ASPE NEWS page 24

At the end of each working day, all open pipe ends shall be capped to prevent contamination.

A thorough flushing and disinfection of plumbing piping system, in accordance with AWWA C 651 or as required by Code, with chlorine or other bactericides, and final flushing must be performed before plumbing piping is accepted to be used by the occupants.

After disinfection, samples of water shall be collected and submitted to a Certified Lab to determine the concentration of bacteria. If bacteria are detected, the procedure shall be repeated.

Also, water entering the building from municipal piping, should have a device, for instance a UV (Ultra Violet) generator, to destroy all bacteria and viruses for potable water, supplied to the building occupants.

Potable water systems designed and installed based upon traditional practices include uncounted number of “dead ends”, serving plumbing fixtures, water hammer arrestors, flushometer valves, equipment, etc. Bacteria once admitted in the Plumbing Systems will be very difficult, if not impossible, to destroy them.

A recent study performed in a hospital in Sherbrooke, Canada determined that heat exchangers, installed to conserve energy, promoted growth of Legionella in the hot water supply. The study appeared in the Journal of the Society for Healthcare Epidemiology of America. The conclusion was: Remove heat exchangers. Reason: “No energy or water savings are worth a human life”

Water Management Plan (WMP)ANSI/ASHRAE Standard 188-2015 requires that all buildings, except single family, shall have a WMP. We should differentiate WMP for existing buildings from WMP for new buildings. The reason is that existing building's plumbing systems were designed and installed with no special attention to WMP.

New building's plumbing systems should be designed and installed to comply with new rules to restrict or limit exponential multiplication of bacteria or other pathogens in plumbing systems. Building Owners and Managers, as responsible parties, should have a plumbing system which can be monitored and disinfected, if necessary. This can be accomplished by proper design.

Smart loop hot water recirculation system.Recently I read about a relatively new system for recirculation of hot water for large buildings, called “smart loop system”, offered by Viega, as part of pro press piping system. The

system includes hot water recirculation pipe (HWR), inside hot water (HW), and a special “double drop elbow”, which eliminates “dead ends” for supplying water to fixtures.

Fundamental criteria to combat micro organisms in potable water piping.1. Prevention is preferable to cure.2. Micro organisms have an extraordinary fast way to

multiply, and mutate to be resistant to antibiotics or other medications we invent.

3. Remove or destroy any micro organisms, before potable water enters building piping distribution systems.

4. Remove salts and minerals from water supplied from municipal pipes.

Some of these minerals will eventually precipitate and deposit inside pipes and equipment, and will be an excellent place for micro organisms to hide and multiply. This can be accomplished by using water softeners or other procedures.

Best Available Technology (BAT)The fight against Legionella just started. Appears that bacteria are a step ahead of our technology to destroy them, and protect our population. Therefore, in the near future, we should expect more outbreaks of Legionella disease. In the mean time we should adjust and continue our fight, by using revised and improved BAT.

Request for review and comments.I prepared this document, based upon my limited knowledge of all equipment and devices available to combat multiplication of micro organisms in potable water systems.

It is agreed by all authorities that micro organisms and chemicals in potable water systems are detrimental to health and safety of population. As professionals, we should use all existing and new technologies, to prevent spreading diseases and allowing deposits of scale on pipes and equipment of potable water systems.

All These suggestions, really will require a new approach for designing potable water systems systems. We should not expect that a Plumbing Engineer/Designer alone will come up with a proper design of improved Plumbing system.

This complex task, calls for collaborative effort of many engineers, contractors, and manufacturers. ASPE is the organization which should take the lead.

Please call or write me with your comments and suggestions. Haig Demergian PE, CPD, FASPEChair of Education Committee, Los Angeles Chapter.Tel: (323) 931-3770 E: [email protected]


ASPE NEWS page 25

Thermometers, Pressure Gauges& Instruments

Stainless Steel & Terrazzo Plumbing Fixtures

Eyewashes, Eye/Face Washes& Emergency Drench Showers

Vacuum Plumbing Systems for Correctional, Commercial

Applications, Water Conservation and Infection Prevention

Polypropylene (PP-R) Pipe for use in pressurized plumbing and mechanical

systems of all sizes

Tankless/Instantaneous Electric Water Heaters

Trap Primers, Water Hammer Arrestors & Accessories

Access Panels & Lead Roof Flashings, Roof Access Hatches

Packaged Pumping SystemsFire Protection Products: Fire Extinguishers,

Hose & Valve Cabinets

Drainage Products & Trench Drains& Oil/Water Separators

Thermostatic Mixing Valves

Low NOx Water Heaters & Boilers, Hot Water Storage Tanks

& Solar Thermal Equipment

Cast Iron, PVC, ABS, & CPVC Pipe & Fittings for Plumbing& Industrial Systems

Water Cooler, Traditional & Contemporary Outdoor Drinking

Fountains, Bottle Fillers, Hydrants& Hydration Station for

indoor/outdoor Application

Bronze, Brass & Cast Iron, Gates, Globes & Checks, Ball Valves, Cast Iron Butterfly Valves & High Perfor-

mance Butterfly Valves

Anne Yardley [email protected]

Stainless Steel Surgical Scrub Sinks, Hospital, Patient Care Systems & Behavioral Healthcare Products

Sump, Effluent & Sewage Controls, Engineered Customer Controls, Embedded Controls, Ceramic

Filtration Solutions

Couplings: No-Hub, No-Hub Heavy Weight, Specialty, Flex-Seal, End Caps

Digital Thermostatic Faucets & Showers.

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ASPE NEWS page 26

Cer5fied to NSF/ANSI 350

Greywater Recycling

•  Patented Membrane •  Simplified MBR Technology •  Low Maintenance •  No Added Chemicals •  Scalable •  Remote Monitoring

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✦ UL- and ETL-listed packaged variable and constant speed pumping systems✦ Domestic water, HVAC, irrigation, and fire pump packages✦ Custom engineering and design capabilities✦ Each system full factory-tested and warranted

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ASPE NEWS page 27

Southern California

0317

John Zagorski cell: 562-447-4561 [email protected]

ASPE NEWS page 28

1681 W. Second St., Pomona, CA 91766Tel: 626-797-9710 Fax: 626-798-4659

Dawson Company partners with Lochinvar and proudly offers Lochinvar’s full product line.

• 10 Models to Choose• 125,000 - 800,000 Btu/Hr• SMART SYSTEM™ Operating Control• Condensing Stainless Steel Heat Exchanger• Package with Lock-Temp Tank• 96% Thermal Efficiency• 5:1 Turndown• PVC/CPVC/Polypropelene or Stainless Steel up to 100 equivalent feet

• Designed and Certified for Outdoor Use• 5:1 Turndown• Stainless Steel Heat Exchanger• SMART SYSTEM™ Operating Control• Perfectly Paired for Use with Outdoor Insulated Storage Tank

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WWW.DAWSONCO.COM or email us at:[email protected]

ASPE NEWS page 29

Alex Jimenez cell: (909) 203-2008 [email protected]

Liberty PumpsSump, drain, effluent, sewage and grinder pumps and pump systems.www.libertypumps.com

Metcraft IndustriesStainless Steel Plumbing Products for Correctional Market, Hospitals Schoolswww.metcraftindustries.com

AB & I FoundryCast iron pipe, fittingsand no-hub couplings.www.abifoundry.com

Tolco / B-LinePipe hangers, seismic systems, and strut systems.www.cooperbline.com

Bemis / ChurchPlastic, wood and soft seatsfor residential, Commercialand specialty applicationswww.toiletseats.com

BraeRainwater harvesting. Complete systems designed to conservewater and help meet yoursustainability objectives.www.braewater.com

EemaxInstantaneous, tank-less, electric water heaterswww.eemaxinc.com

Fox EnvironmentalFox washdown units. Designed to divert all your Wash down water to waste while allowing rainwater to go to storm water.www.foxenviro.com/au

HoldriteThe market leader in pipe support and alignment systems featuring Holdrite, Lockrite, Pexrite Quick strap, and HydroFlamewww.holdrite.com

Just Manufacturing Stainless steel sinks forCommercial, residential andinstitutional applicationswww.justmfg.com

Maax BathLuxury bathroom products:Bathtubs, Showers, Showers Doors, Tubs Showerswww.maax.com

OrionNo hub fittings for acid wastedrainage systems. Rionfusepolypropylene fittings, neutralization tanks, corrosion resistant lab sinks.www.orionfittings.com

PowersWater tempering and process control specialistswww.powerscontrols.com

Watts Drainage / BlücherSpecification drains, floor sinks, interceptors, trench drains, carriers stainless steel drainage systems, floor drains, shower drains. www.watts.com/drainagewww.blucherdrains.com

Sloan Valve Manual and sensor operatedflushometers, Faucets andvitreous china fixtures, handdryers, SloanStone systemswww.sloanvalve.com

Watts Water TechnologiesA complete line of water safety, and backflow prevention products.Regulators, automatic control valves, gate globe and check valves.www.watts.com

Jeff Atlascell: (213) 999-0167

office: (714) [email protected]

www.delcosales.com5375 E Hunter Avenue Anaheim, CA 92807

Washing Machine & Ice Maker boxes, Dearborn tubular & ADA Trap Coverswww.oatey.com

Commercial & Residential waterheaters both gas & electric.www.hotwater.com

Tankless Commercial & Residential water heaterswww.takagi.com

www.statewaterheaters.com www.americanwaterheater.com

Liberty PumpsSump, drain, effluent, sewage and grinder pumps and pump systems.www.libertypumps.com

Metcraft IndustriesStainless Steel Plumbing Products for Correctional Market, Hospitals Schoolswww.metcraftindustries.com

AB & I FoundryCast iron pipe, fittingsand no-hub couplings.www.abifoundry.com

Tolco / B-LinePipe hangers, seismic systems, and strut systems.www.cooperbline.com

Bemis / ChurchPlastic, wood and soft seatsfor residential, Commercialand specialty applicationswww.toiletseats.com

BraeRainwater harvesting. Complete systems designed to conservewater and help meet yoursustainability objectives.www.braewater.com

EemaxInstantaneous, tank-less, electric water heaterswww.eemaxinc.com

Fox EnvironmentalFox washdown units. Designed to divert all your Wash down water to waste while allowing rainwater to go to storm water.www.foxenviro.com/au

HoldriteThe market leader in pipe support and alignment systems featuring Holdrite, Lockrite, Pexrite Quick strap, and HydroFlamewww.holdrite.com

Just Manufacturing Stainless steel sinks forCommercial, residential andinstitutional applicationswww.justmfg.com

Maax BathLuxury bathroom products:Bathtubs, Showers, Showers Doors, Tubs Showerswww.maax.com

OrionNo hub fittings for acid wastedrainage systems. Rionfusepolypropylene fittings, neutralization tanks, corrosion resistant lab sinks.www.orionfittings.com

PowersWater tempering and process control specialistswww.powerscontrols.com

Watts Drainage / BlücherSpecification drains, floor sinks, interceptors, trench drains, carriers stainless steel drainage systems, floor drains, shower drains. www.watts.com/drainagewww.blucherdrains.com

Sloan Valve Manual and sensor operatedflushometers, Faucets andvitreous china fixtures, handdryers, SloanStone systemswww.sloanvalve.com

Watts Water TechnologiesA complete line of water safety, and backflow prevention products.Regulators, automatic control valves, gate globe and check valves.www.watts.com

Jeff Atlascell: (213) 999-0167

office: (714) [email protected]

www.delcosales.com5375 E Hunter Avenue Anaheim, CA 92807

Washing Machine & Ice Maker boxes, Dearborn tubular & ADA Trap Coverswww.oatey.com

Commercial & Residential waterheaters both gas & electric.www.hotwater.com

Tankless Commercial & Residential water heaterswww.takagi.com

www.statewaterheaters.com www.americanwaterheater.com

ASPE NEWS page 30

As SF skyscraper sinks and leans, the number of lawsuits risesResidents mind the cracks in the basement walls of the Millennium Tower and wonder how far their homes and their property values will sinkhttps://www.cbsnews.com/news/as-san-francisco-residential-skyscraper-sinks-and-leans-the-number-of-lawsuits-rises/

As the cracks in its basement walls slowly widen, a visual clue to the slow sinking of the 645-ft. skyscraper, the residents of Millennium Tower file lawsuits and wonder how far their homes - and their investments in those homes -- will sink. Jon Wertheim went to San Francisco to report on the building that's become the most infamous in the city's skyline for a 60 Minutes story to be broadcast Sunday, Nov. 5 at 7:30 p.m. ET and 7 p.m. PT.

Since its foundation was poured in 2006, the Millennium has sunk 17 inches and tilted 14 inches to the northwest. The posh residence was once touted as the best in the city and its units commanded millions from the likes of tech titans and the city's former pro quarterback, Joe Montana. Pat and Jerry Dodson were enthusiastic buyers. They tell Wertheim they were euphoric over their new home until the news broke about the sinking. Jerry, a lawyer and engineer, now makes a daily trip to the basement to check on the spread of cracks in the walls. "There's enough of them, a spider web of cracks… that you have to be

concerned about what's going on underneath…I've been told by structural and geotechnical engineers that I should be watching."

The trouble at the Millennium Tower has spawned numerous lawsuits -- to which there are some 20 parties so far. But some residents have already sold their units. "We don't know if this building's going to stand up in an earthquake," says Frank Jernigan. "And so I became severely frightened of that." His husband, Andrew Faulk, adds, "And we got out. We left really most all of our belongings. We just left," he tells Wertheim. They say they lost between 3 and 4 million dollars when they sold their apartment earlier this year. "We sold it for approximately half of what it was valued at before this news came to light," says Jernigan.

Millennium Tower was built to code, but some engineers now say that because the building is made of concrete and heavier than a steel building, its foundation should have been driven deeper, all the way to bedrock, to prevent sinking. An interesting array of suggestions about how to fix the tower have been floated around town; they include freezing the ground beneath in perpetuity or lopping off the top 20 floors to decrease its weight. More likely, say engineers, the foundation will have to be strengthened by new piles that reach down to bedrock.

Meanwhile the tech-fueled building boom in San Francisco continues unabated and "bedrock" has become the new watchword to developers. In an ironic reference to Millennium's troubles, tech giant Salesforce, whose headquarters was recently completed across the street, proudly tweeted that it was resting on "Bedrock Baby!"

In The News...

Los Angeles ChapterAmerican Society of Plumbing Engineers

Officers - Board of Directors

Published by American Society of Plumbing Engineers, Los Angeles Chapterwww.aspela.com • [email protected]

Over Fifty years of Dedication to the Health and safety of the Southern California CommunityA non-profit corporation Local chapters do not speak for the society.

ASPELA Times

Chairman Education CommitteeHAIG DEMERGIAN PE, CPD,

FASPEPHONE (323) 931-3770

[email protected]

Chairman Scholarship CommitteeVIVIAN ENRIQUEZ, CPD,

FASPEArup

PHONE (310) [email protected]

Chapter Affiliate Liaison:RON BRADFORD

Signature SalesPHONE (951) 549-1000

[email protected]

Chairman Board of GovernorsWILLIAM SILER

Southcoast Engineering GroupPHONE (818) 224-2700

[email protected]

TreasurerHAL ALVORD, CPD, GPD

Donald Dickerson & AssociatesPHONE (818) [email protected]

Administrative SecretaryCHRISTOPHER YANG, PE,

CDP, CFPSAffiliated Engineers

PHONE [email protected]

Corresponding SecretaryNewsletter Editor

JEFF ATLASDelco Sales


AYP LiaisonCHIARA SULZE

ArupPHONE (310) [email protected]

President WILLIAM SILER

SOUTHCOAST ENGINEERINGPHONE (818) 224-2700

FAX (562) [email protected]

Vice President TechnicalVIVIAN ENRIQUEZ, CPD,

FASPEArup


Vice President LegislativeKOOK DEAN, PE, CDP, GPD

LADWPPHONE (213) [email protected]

Vice President MembershipJOHN ZAGORSKI

Mainline SalesPHONE (562) 447-4561

[email protected]

ASPE NEWS page 31

President THURA ZIN, CPD, GPD

ArupPHONE (310) 578-4514

[email protected]

president’s report december 2017 - aspe la · to revise aspe/ansi 45 (2013): siphonic roof...

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