Class 1 standpipe demand question

[skdesigner]

Bidding a project over 75' with class 1 standpipe. Per NFPA 14 2007 5.4.1.2, I have to meet the 100 psi @ 500 GPM at the most demanding standpipe. No problem. 100 psi at the top means pressure is going to be over 175 psi at the bottom, again, no problem. PRV's or high and low zones.

The issue is, I'm told nobody else up here (Saskatchewan, Canada), bids this way, and it's not enforced. Ethics dictate that I do it right anyways.

I was told by the boss that I'm reading the newer version of NFPA 14 (2007, so not that new) and that the earlier versions did not require this demand to be met. Our building code references the 2003 edition of NFPA 14.

I don't have one lying around, and NFPA.org doesn't seem to have one to view. It's a lucrative job that I don't want to price myself out of.

Anybody with a 2003 ed of 14 have any guidance?

 

[ChrisConley]

What requirement doesn't your boss want you to meet?

I'm guessing I know the job (not that many 75' buildings 'round here at the minute). Why don't you contact the engineer, request a clarification (as I'm guessing the PRV's don't show up) and then get clarification by addendum regarding the requirements.

 

[ChrisConley]

The reason I ask about what you're being told to ignore is that the NBC (National Building Code of Canada) does change the requirements of standpipe in Canada.

3.2.5.9. Standpipe System Design
1) Except as required or permitted by Sentences (2) to (6) and Articles 3.2.5.10., 3.2.5.11. and 3.2.5.12., the
design, construction, installation and testing of a standpipe system shall conform to NFPA 14, "Standard for
the Installation of Standpipe and Hose Systems."
2) A dry standpipe that is not connected to a water supply shall not be considered as fulfilling the
requirements of this Article.
3) If more than one standpipe is provided, the total water supply need not be more than 30 L/s.
4) A standpipe need not be installed in a storage garage conforming to Article 3.2.2.83. provided the
building is not more than 15 m high.
5) The residual water pressure at the design flow rate at the topmost hose connection of a standpipe system
that is required to be installed in a building is permitted to be less than 690 kPa provided
a) the building is sprinklered throughout,
b) the water supply at the base of the sprinkler riser is capable of meeting, without a fire pump, the design
flow rate and pressure demand of the sprinkler system, including the inside and outside hose allowance,
and
c) fire protection equipment is available to deliver, by means of the fire department connection, the full
demand flow rate at a residual water pressure of 690 kPa at the topmost hose connection of the
standpipe system. (See Appendix A.)
6) A fire department connection shall be provided for every standpipe system.

 

[skdesigner]

Chris, thanks. (5)b is what I was looking for.