We have a project that has carpet storage, per FM Global Sheet 8-30, Table 1. In that table, there are different K-Factor options with corresponding minimum pressures.
The existing sprinkler system has k-16.8 ESFR sprinklers.
My question is whether or not I can utilize the existing k-16.8 ESFR sprinklers and just calculate them to meet the requirements of FM Global?
In this case, it's showing a minimum required demand of 30 sprinklers at only 7 psi. Am I looking at this wrong?
Thanks in advance.
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1/31/2022 06:54:57 am
1/31/2022 11:21:51 am
No, you can't use ESFR if you are using FM data sheet 8.30. The table is with standard spray sprinklers only.
1/31/2022 01:16:51 pm
1/31/2022 04:33:28 pm
Where does the table say cmda sprinklers are required? FM classifies sprinklers as either storage or nonstorage sprinklers. Many ESFR sprinklers are FM approved storage sprinklers, which can be used in accordance with 8-30 table 1 as a quick response sprinkler.
1/31/2022 08:09:56 am
The use of 7 psi for ESFR sprinklers does not sound right. Need to use the required minimum pressure for the sprinkler type utilized.
1/31/2022 11:23:03 am
1/31/2022 08:18:45 am
I just did a rolled carpet storage using FM 8-30.
1/31/2022 08:21:09 am
Sorry, my answer was kinda convoluted.
1/31/2022 08:23:29 am
You are going about this properly, the only two issues I see are the following:
1/31/2022 11:24:41 am
No, you can't use ESFR if you are using FM data sheet 8.30.
2/2/2022 08:36:09 am
I cannot see where DS 8-30 talks about using only "Standard Spray Sprinklers" only. DS 8-30 says for the automatic sprinkler protection to use ceiling and in-rack sprinklers as per DS 2-0, and DS 8-9. DS 8-9 redirects to the following:
1/31/2022 11:20:04 am
As indicated by some above, the table 1 is not for ESFR but standard spray sprinkler (in the CMDA mode).
2/1/2022 04:47:11 am
Note also that sprinklers have minimum and maximum operating pressures.
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