Dennis,
You did not indicate which edition of -13 is applicable, however some
good supporting information can be found in the 2019 edition in §17.5
regarding pipe stands. Make sure to read all of it, as it allows but
does not require certification by a registered PE.
As I am a principal member of the committee on hanging and bracing,
please see the disclaimer below.
have a safe and Happy New Year to everyone,
*Ken Wagoner, SET*
*Parsley Consulting
500 West Mechanic Street
Harrisonville, Missouri 64701-2235*
*Phone: (760) 745-6181 *
*Visit the website
<https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fwww.parsleyconsulting.com%2f&c=E,1,Y5zKJKPEh1mBEBqSR-VE9cUKl5y-eyP8BpvmE_5j9ZqW2eJbNphYzrCMBZ-2YuX6d-RRkHI4gQ1FV-cvOeCfRC58uZS9NiToZv2mx7909oCqLvCW_n5hDHeK&typo=1>*
*IMPORTANT NOTICE: This correspondence is not a Formal Interpretation
issued pursuant to NFPA Regulations. Any opinion expressed is the
personal opinion of the author and does not necessarily represent the
official position of the NFPA or its Technical Committees. In addition,
this correspondence is neither intended, nor should it be relied upon,
to provide professional consultation or services**
**
**It should be noted that the above is my opinion as a member of the
NFPA Automatic Sprinkler System Hanging and Bracing Committee and the
Hanging and Bracing for Fire Suppression Systems Committee in accordance
with the NFPA Regulations Governing Committee Projects and should
therefore not be considered, nor relied upon, as the official position
of the NFPA or its Committees**
*
On 12/29/2022 11:47 AM, Dennis Wilson wrote:
I have a 4” main @ 30’ AFF, I drop down w/ 4” to a 12” arm-over then
up to a b’fly va. & Aux. Dry Va., then proceed back up to 28’ AFF to
feed a dry system.
On the 4x 1’-0” arm-over we installed a pipe stand. (the arm-over is
5-0 above the floor) We also use clamps to support the drops to the walls.
The engineer is asking for proof that the pipe stand can support the
load. This is install and hasn’t fallen is not enough proof.
Anyone have a way this can be done?
Dennis Wilson
Blackhawk Auto. Sprinklers
Cedar Falls, Iowa
1-319-266-7721
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