MeyerFire
  • Blog
  • Daily
  • Exam Prep
    • CFPS Tools
    • NICET Tools
    • PE Forum & Errata
    • PE Problems
    • PE Store
    • PE Tools
    • PE Weekly Exams
  • TOOLS
    • COMING SOON
    • BACKFLOW DATABASE (MEMBER)
    • CLOUD CEILING CALCULATOR
    • FIRE PUMP ANALYZER
    • FIRE PUMP DATABASE (MEMBER)
    • FLAMMABLE & COMBUSTIBLE LIQUIDS
    • FRICTION LOSS CALCULATOR
    • K-FACTOR SELECTOR
    • OBSTRUCTION CALCULATOR
    • SPRINKLER DATABASE (MEMBER)
    • THRUST BLOCK CALCULATOR
    • TOOLKIT (MEMBER)
    • TRAPEZE CALCULATOR
    • UNIT CONVERTER
    • VOLUME & COMPRESSOR CALCULATOR
    • WATER SUPPLY (US)
    • WATER SUPPLY (METRIC)
  • LOGIN
  • STORE
Picture
A FORUM FOR PE EXAM PROBLEMS & DAILY DISCUSSION | SUBSCRIBE NOW

PE Problem #91

10/9/2018

10 Comments

 
A project site is connected to a water tank through an equivalent 650 feet of 6-inch schedule 10 pipe (c-factor of 140). If the water tank is 165 feet above the project site, the fire flow available at the project site is most nearly:
     a. 1,300 gpm
     b. 2,100 gpm
     c. 2,400 gpm
     d. 8,700 gpm

Solution | Posted 10/10/18
Picture
10 Comments
Vince
10/9/2018 08:19:21 am

1,300 @ 49.39

Reply
Jimmy
10/9/2018 06:24:02 pm

A. My logic would be to say Pt=71.46psi. Pv + Pp at the given flows are 23.4 psi, 56.7 psi, 73 psi and 748 psi. What's the required delivery pressure? You end up @ 54psi, 17.5psi, 0, & impossible. Any answer below 54 psi won't spray for beans--not exactly useful to fight a fire, right?

Reply
FPE
10/9/2018 10:05:47 am

c. 2,400 gpm,
Ref - convert 165 feet head to psi and use Hazen William formula to find out Q

Reply
Pari
10/9/2018 11:08:45 am

C ,2400 gpm

Reply
Vince
10/9/2018 12:43:32 pm

Friction loss in 650 ft of 6" @ 140 =22.22 psi. Doesn't that play a part here?

Reply
migdalia guzman
10/9/2018 11:47:27 am

C, 2400 GPM

Reply
MHK
10/9/2018 07:32:52 pm

b. 2,100 gpm

Reply
Ed
10/9/2018 09:44:00 pm

c. if you are supplying a pump (much higher full than that and the pressure at the pump suction would drop below zero). Without a pump it would be a. or b. depending on the sprinkle systems required pressure. I used Hazen Williams and solved for the the three lowest flow rates individually. Is there a direct way to solve?

Reply
AJ
10/11/2018 09:13:04 am

Are these the same problems as in the Meyer PE Guide?

Reply
Joe Meyer
10/11/2018 09:58:08 am

Hi AJ,

No these daily problems are all different than the PE Prep Guide. Thanks!

Reply



Leave a Reply.

    Free Signup

    Subscribe for posts on PE Problems and Daily Discussions, straight to your inbox, for free:
    I'm Interested In:

    Community

    Thank You to Our Top January '19 Contributors:
    1. PETE
    2. Mike
    3. Wayne A.
    4. Brian G.
    ​5. Sean
    6. Sue B. 
    7. Nimal W.
    8. Dave L.
    9. James A.
    ​10. Dan W.

    Your Post

    Ask your question here  (members area)

    Search

    All-Access

    Get all-access to the downloadable Toolkit, Sprinkler Database, Ask-A-Question and more.
    Picture
    ALL-ACCESS

    Filters

    All
    Daily Discussion
    Explosion Protection & Prevention
    Fire Alarm
    Fire Detection And Alarm Systems
    Fire Dynamics
    Human Behavior
    Information Sources For Analysis
    Means Of Egress
    Passive Building Systems
    PE Prep Guide
    PE Sample Problems
    Smoke Management Systems
    Special Hazard Systems
    Types Of Analysis
    Updates
    Water Based Fire Suppression
    Weekly Exams

    Archives

    February 2019
    January 2019
    December 2018
    November 2018
    October 2018
    September 2018
    August 2018
    July 2018
    June 2018
    May 2018
    November 2017
    October 2017
    September 2017
    August 2017
    July 2017
    June 2017
    November 2016
    October 2016
    July 2016
    June 2016
    June 2015

    Daily
    Daily discussion questions are open-ended questions posed by members for the benefit of sharing expertise and learning from other perspectives. Join as a member here.

    Exam Prep

    Picture
    2018 PE Prep Guide​
    ​
    Picture
    Weekly Practice Exams
    ​
    Picture
    PE Problems
    ​Visit July-October for daily Fire Protection PE Exam sample questions.

    Solutions are posted the day after posting.

    Comment with your solutions, questions or clarifications.

    Please note that questions posted are unofficial and in accordance with NCEES rules are intended to be similar to actual exam questions, not actual exam questions themselves.

    RSS Feed

Home - About - Blog - Contact - Exam Prep - Store
Picture
Copyright © 2018 MeyerFire, LLC
The views, opinions, and information found on this site represent solely the author shown and do not represent the opinions of any other party, nor does the presented material assume responsibility for its use. Fire protection and life safety systems constitute a critical component for public health and safety and you should consult with a licensed professional for proper design and code adherence. Some (not all) outbound links on this website, such as Amazon links, are affiliate-based where we receive a commission for orders placed elsewhere.
  • Blog
  • Daily
  • Exam Prep
    • CFPS Tools
    • NICET Tools
    • PE Forum & Errata
    • PE Problems
    • PE Store
    • PE Tools
    • PE Weekly Exams
  • TOOLS
    • COMING SOON
    • BACKFLOW DATABASE (MEMBER)
    • CLOUD CEILING CALCULATOR
    • FIRE PUMP ANALYZER
    • FIRE PUMP DATABASE (MEMBER)
    • FLAMMABLE & COMBUSTIBLE LIQUIDS
    • FRICTION LOSS CALCULATOR
    • K-FACTOR SELECTOR
    • OBSTRUCTION CALCULATOR
    • SPRINKLER DATABASE (MEMBER)
    • THRUST BLOCK CALCULATOR
    • TOOLKIT (MEMBER)
    • TRAPEZE CALCULATOR
    • UNIT CONVERTER
    • VOLUME & COMPRESSOR CALCULATOR
    • WATER SUPPLY (US)
    • WATER SUPPLY (METRIC)
  • LOGIN
  • STORE