Valve Pit for 13R Project

[Haldorson]

Hello,

Consider a 4-unit non-stacked residential buildling (NFPA 13R). Each unit has its own exit. No common mechanical room. No fire alarm system is required.

I would like to install a valve pit.

Do you locate the flow switch and test & drain in the valve pit as well?

I appreciate any help.


Thanks.

 

[SprinklerDesigner2]

No.

 

[cdafd]

Where is the rest of the riser assembly??

Sounds like they need a dog house

And assume one feed for the entire building

 

[cdafd]

also where does the fdc fiqure in on this set up?

 

[Haldorson]

cdafd:

Only one zone is required for the entire building since a fire alarm system is not needed.

It's a weird situation where this building does not have a common mechanical room and needs a double check valve assembly (as opposed to dual check valves and the reason for the valve pit).

Regarding the FDC, I would locate on the front of the building and connect to the nearest point of the largest main inside. Probably a 2 1/2" FDC with a reducer to 1.5" to match main.

 

[cdafd]

I hate pits suggest small dog house

What part of the country is this???

 

[Haldorson]

Just so I'm clear, a small dog house is a closet sized addition to the house that is heated and accessible with key from outside the building by all tenants?

This project is in the Pacific Northwest.

 

[fireguy519345]

No access by tenants and a break-a-way padlock for FD emergency access. Cannot quote a code section, but jumping off the tailboard only to find locks w/o keys and padlocks that were too big to cut was very frustrating.

 

[cdafd]

Just so I'm clear, a small dog house is a closet sized addition to the house that is heated and accessible with key from outside the building by all tenants?

This project is in the Pacific Northwest.

yes with heat and light big enough to work in and you can have the backflow and fdc there

is this a townhouse or what is it???

 

[Haldorson]

It's a four unit, 3-storey, non-stacked residential building.