PE Problem #15

6/21/2018

A portion of a home-improvement store has K11.2 ceiling-only sprinkler protection above double row racks. The owner is looking to store bagged charcoal (without any impregnated ignition fluid or plastic wrap) atop reinforced plastic pallets in this area. What would the commodity classification be for this arrangement if no plastics are intermixed?
a. Class II
b. Class III
c. Class IV
d. Group A Plastic

Solution | Posted 06/22/18

5 Comments

FPE

6/21/2018 08:14:28 am

b. Class III
(Ref - NFPA 13-2016, Table A.5.6.3, Miscellaneous, Page 301)

KJK

6/21/2018 09:42:53 am

The commodity is class III - A5.6.3 Miscellaneous, however the reinforced plastic pallets raise it two levels - 5.6.2.3. So, d. Group A Plastic

Fireman112473

6/21/2018 10:04:16 am

It would be D because the commodity class for charcoal w/o any impregnated ignition fluid or plastic wrap would be Class III, but when you put it on reinforced plastic pallets it would increase by two classes to cartoned unexpanded Group A plastics. (NFPA 13 2016 section 5.6.2.3)

David

6/21/2018 11:41:06 am

Colleen

6/21/2018 12:51:26 pm

not entirely sure...but I think d). Group A Plastic??

From NFPA 13 Table A.5.6.3, "standard charcoal, bagged" is a Class III commodity, but according to 5.6.2.7, "For Class I through Class IV commodities stored on plastic pallets...the classification of the commodity unit...shall be increased two classes", which would bump this up to a Group A Plastic classification.

Free Signup

Subscribe for posts on PE Problems and Daily Discussions, straight to your inbox, for free:

Community

Thank You to Our Top November Contributors:

1. Dave L.
2. Mike
3. Wes
4. Peter
5. Wayne A.

6. Scott M.
7. Robert
8. EdwH
9. Diaa
10. RJ

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.

ALL-ACCESS

Filters

Exam Prep

2018 PE Prep Guide

Weekly Practice Exams

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

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.