No Hyd Pressure Change to System - Code 1

[Mavrick42]

I am designing a system and there is no hyd change to the system that I am adding to. I would like to know the code that I can list on my drawing to state that this system has no change in the system. Any help would be much appreciated.

 

[MatthewJWillis]

Something has changed, your doing a drawing.

What exactly are we doing?

R/
matt

 

[Mavrick42]

I have an existing system that we designed and installed. I am using the same heads and size of pipe to add a few more branch lines to the system.

I was wanting to put the code on my sheet that has the number for this.

Any idea?

I appreciate the help.

B

 

[dbill74]

The new design has to meet the same requirements as the existing, NFPA 13. Your drawings and calculations should show the hydraulically most remote area along with the hazard classification. Beyond that consult with your local AHJ regarding what they require to be on your drawings.

 

[MatthewJWillis]

Simply using the same size everything does not matter.

Are the branch lines being added, adding to the remote distance? If so, hydraulic calcs are in order. This then becomes the same as a full new system submittal in a sense. In any case, the items outlined in NFPA #13 must be accounted for in your drawing. Reference Chapter 22, section 22.1.3.

R/
Matt