Let me play Devil’s Advocate here. James says the building is 40 feet high. So ESFR protection is probably provided via a table that allows rack storage up to 35 feet high (I’m speculating here, but probably accurate).
If the building is 40 feet tall, then the sprinklers are somewhere below that, but let’s just say that the sprinklers are at 40 feet. James says the cable tray is 25 feet below the sprinkler. So the cable tray is no more than 15 feet off the ground. So there can’t conceivably be storage any higher than 15 feet directly below the cable tray. I’m not sure that is going to cause any kind of meaningful obstruction, because I’m not sure there can be any kind of meaningful fuel load below the cable tray. -Kyle M From: Brett Peters <[email protected]> Sent: Tuesday, September 27, 2022 5:48 AM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [EXTERNAL] [Sprinklerforum] Re: ESFR and Continuous Obstructions Had this discussion in a seminar about ESFR sprinklers, They specifically direct a large amount of the water straight down for rack penetration, that is why there is not allowed to be any obstructions directly below the sprinklers, the cable tray needs to move. Thanks Brett Peters General Manager Installation & Design Proudline Fire Protection Services Ltd. [email protected]<mailto:[email protected]> 780 490 7602 office ext 202 780 490 7605 fax 780 777 0568 cell 780 718 2676 24h Visit us at www.proudline.ca<https://urldefense.com/v3/__http:/www.proudline.ca/__;!!Ba8_KKAT!LQisSy4JGA6M03Xs5jnbBsEB3ioD5EcqM19MFCpAMwJ6isENrgjjYGBQ5C-PVB6i7BDBF2aZo92CHoinx_hK$> Proudline now offers ULc listed monitoring services, please contact [email protected]<mailto:[email protected]> for more information [https://ci3.googleusercontent.com/mail-sig/AIorK4wRo6r0eNDUWx8YR-4XJLvwcnouQn_xEZH_HIb4jDbepWtON2RWC-ekzvZHKtncFOQqPcNQfzM] [https://ci3.googleusercontent.com/mail-sig/AIorK4yJVI287VPLDWiW9maE2Np3U4CdszCY9deeyaLl8DM90wlBd7pnuOZV9U-swv-7gWN_24py6vo] [https://ci3.googleusercontent.com/mail-sig/AIorK4wlGmqj6Ja06DKOIMLPvEE8B2W8fT_TPPA3w-4JfqygLq9n77ECSni09YLIVICXJYzWo4Z0PjU] [https://ci3.googleusercontent.com/mail-sig/AIorK4zEgPbs279KVEfWIpIiWNLel8zAlcloW9dNXGLTaE1cMz88CRkmg17fju5BQB_iIzhWK20DUL8] [https://ci3.googleusercontent.com/mail-sig/AIorK4z7J0kfmSGA8jKvDK0pTqW3KQlc5v-tYcWosmy5W7pdok462Gzu_9Ft7UK9oJUWDT1DzhQ4hUU] [https://ci3.googleusercontent.com/mail-sig/AIorK4wTVHoTZxkppBoWSCTFnGLgGTq0apivi8sNvWPyBsloO0mmy8ZYu4Ax854jo7ihTMFyeYeOceg] [https://ci3.googleusercontent.com/mail-sig/AIorK4xwBWEOX5v9mpza4Jqf9lOKSwThBNvyIO7Rl-Cxo7NRiV7p70C0f1biwbh44Y-iIA5GcmD1MCo] [https://ci3.googleusercontent.com/mail-sig/AIorK4yPfO1HdtbQPYiKlYE38cwc88ABhX7xN1nh0fCK5LjFXjKplJggk3Xn6_XypmtMWyADKR7ZRGk] On Mon, Sep 26, 2022 at 11:11 AM James Crawford <[email protected]<mailto:[email protected]>> wrote: NFPA #13 (2013) section 8.12.5.3 Continuous Obstructions Below Sprinkler. Building is 40’-0” high and is protected with ESFR K25 sprinkler heads. We have an electrical cable tray that is 1’-0” wide and they have located it below a line of ESFR sprinkler heads. The cable tray is located 25’-0” below the sprinkler heads. Code does not give a distance below but only states that it needs to be locate 1’-0” to the side of the sprinkler heads or you need to provide sprinkler protection below, but my logical brain says this should not be a problem. Comments. Thank You James Crawford Phaser Fire Protection Ltd. Phone 604-888-0318 Cel: 604-790-0938 Email [email protected]<mailto:[email protected]> Web: www.phaserfire.ca<https://urldefense.com/v3/__http:/www.phaserfire.ca__;!!Ba8_KKAT!LQisSy4JGA6M03Xs5jnbBsEB3ioD5EcqM19MFCpAMwJ6isENrgjjYGBQ5C-PVB6i7BDBF2aZo92CHoAm7Of2$> _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org<https://urldefense.com/v3/__https:/lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org__;!!Ba8_KKAT!LQisSy4JGA6M03Xs5jnbBsEB3ioD5EcqM19MFCpAMwJ6isENrgjjYGBQ5C-PVB6i7BDBF2aZo92CHqdRS4rj$> To unsubscribe send an email to [email protected]<mailto:[email protected]>
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