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American Fire Sprinkler Association [http://www.firesprinkler.org/] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AFSA Technical Update ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ A newsletter dealing with codes and other technical issues February 15, 2013 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ NFPA 13D - Shadowing The two previous Technical Updates covered the changes to shadowing in the 2013 edition of NFPA 13 and NFPA 13R. This will address changes to references to shadow areas in the NFPA 13D standard. There were no references to shadowing or dry areas in the 2010 edition of NFPA 13D. The following information is new to the 2013 edition of NFPA 13D. First, shadow area is defined in Section 3.3.9 as the dry floor area within the protection area of a sprinkler created by the portion of sprinkler discharge that is blocked by a wall or partition. New annex material gives further explanation in A.3.3.9. The annex states, "Water is not required to fall on every square inch of floor space of the occupancy. This definition establishes a term that will be used to address the rules for acceptable dry spaces that occur when walls interfere with the sprinkler's spray pattern. Angled walls, wing walls, and slightly indented walls can disrupt water discharging from a sprinkler, which does not travel only in an absolute straight line, as if it were beams of light. Where small (typically triangular) shadowed areas are formed on the floor adjacent to the wall, these shadowed areas are purely on paper and do not take into account the dynamic variables of sprinkler discharge. In order to be acceptable, the shadow area needs to be within the coverage area of a sprinkler, meaning that water would discharge to the space directly if the structural or architectural feature was not there. The purpose of the shadow area is not to replace any existing obstruction requirements. Instead the shadow area concept has been added to the standard to provide clarity to specific situations in which walls form non-rectangular shaped rooms as shown in Figure A.3.3.9." A new figure accompanies this information as Figure A.3.3.9 Shadow Area Created by a Wall. The main body has Section 8.2.5.7 specific to shadow areas where it indicates that it shall be permitted in the protection area of a sprinkler as long as the cumulative dry areas do not exceed 15 sq. ft. per sprinkler. The annex material A.8.2.5.7 was added to clarify that corridors being protected with sidewall sprinklers will frequently have small areas behind the sprinklers that are inset for a doorway. Even though these areas are slightly behind the sprinklers, it is not the intent of NFPA 13D to require additional sprinkler protection in these doorways. Examples of shadow areas are provided in Figures A.8.2.5.7(a) Example of Shadow Areas (SSU/SSP) and Figure A.8.2.5.7(b) Example of Shadow Areas (HSW). Residential corridors can be L-shaped in residences. The standard does not indicate how far back the leg of the "L" can be when a sidewall sprinkler is used. NFPA 13R in Section 6.4.6.3.3.2 indicates it allows an inset of 2 ft. NFPA 13D did not specify this distance. Using the limitation of 15 sq. ft. per sprinkler in a 3 ft wide hallway, the unprotected hallway can be up to 5 ft long. This is worth clarifying for the next edition of NFPA 13D that is currently accepting public input. Lastly, previous annex language in A.8.2.5 was removed concerning small areas created by architectural features such as planter box windows, bay windows, and similar features since the dry shadow area rules were introduced. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Residential Sprinkler Requirements by State AFSA receives requests on the updates on states that require residential fire sprinkler systems for one and two family dwellings. The website with that information can be viewed at http://www.firesprinklerinitiative.org [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOIeYKmpz3CVIadce_RjqVfj2ORqqscfJuwIWL7uhg8Twycsqvxb4o5v6mRXWBk8M5PP_rXzCCKD5R2Of9pc_NrWXQKCo9N2KPu0AK05DnRPwtTAc_kg4NWa] and click on Legislation & Adoptions menu for a state by state listing. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ firesprinkler.org [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOLN_vHLNwQa9AXZjKGOjPJVon5N4gMdSshsR705kVjjvprYgoo-pW7Hgkv35Tl6ED750Guo1HF-s53yHx7eyj91JOgrjuglB-iuuAnOUw0p1g==] Hosted by the American Fire Sprinkler Association ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Technical Update is prepared by the Technical Services Dept. of the AFSA: Vice President of Engineering and Technical Services Roland Huggins, a PE registered in fire protection engineering; Phill Brown, a NICET IV certified automatic sprinkler technician and NFPA Certified Fire Protection Specialist (CFPS) and Tom Wellen, a PE registered in fire protection engineering. This is provided with the understanding that the AFSA assumes no liability for this opinion or actions taken on it and they are not to be considered the official position of the NFPA or its technical committees. Copyright 2012, American Fire Sprinkler Association. All Rights Reserved ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ PDF Version PDF [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOIRcMzOzhey8_diZvL6Ht8DoW3e8m1Vba3bpNVz6Q39NHyeS6q5E0Z5GrAVYGSssLmoD-jUN0pDcKKisBR7qTuSjsOR_wNa0Cj9jbRPwV242MOnGVrCsafj-EsMuE2RbTclAiid6d7li0dAI09yBvB2PqwCGw1oz-QevrIE3DIVYXbUwPs36q41nHSbu7I2ajc=] Link [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOIRcMzOzhey8_diZvL6Ht8DoW3e8m1Vba3bpNVz6Q39NHyeS6q5E0Z5GrAVYGSssLmoD-jUN0pDcKKisBR7qTuSjsOR_wNa0Cj9jbRPwV242MOnGVrCsafj-EsMuE2RbTclAiid6d7li0dAI09yBvB2PqwCGw1oz-QevrIE3DIVYXbUwPs36q41nHSbu7I2ajc=] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Training Calendar AFSA Beginning Fire Sprinkler System Planning School February 25 - March 8, 2013 Check our calendar to view upcoming training. For details and/or to register, visit the AFSA Calendar [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOKCHNt_NuiAEm76SXS6Vtcfxccgc5L1wOnvrJrXnviHGsYM8DWvkyeSSzAp2CBlHmRixb4q58v-4fxSlBjOh6YxpOWOaiwh7Hj-JyGA_K7C_RAAdNJieEOqYmVusCtpnyxVQmF5scoi1vjPRqqBgOI3jDzLRMikSverOOHsSuCB6bE4o6SdA0alBOD3kkS6pmz5Q1uDgGim8ALy6KrJTIplsi7lY-2YlfUK0vByDvGPFt1xRxNu0djfQTeEinVWpNDpy68p7-JsVYmxIVSuSzio]. e-campus_logo [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOINUShOw54jOqOIH6-1DwisyWtR5TmyEvvaxlaoyR4ko8mfraOjIZ8f6-kajHtxEawnZDlWuvEeUOaao_sf165fGNoc9Ag7u3G4ZZjB5TXt8vxxU6txmv6P] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Training Webinar Bob Caputo to Present an AFSA Webinar on "Technical Changes from the 2010 ed. to the 2013 ed. of NFPA 13 Part I - Installation Requirements" Wed., March 13, 2013 Free to AFSA members! Register Button [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOLXpemtxPHc8UWx9x75jDy__WpuzvQbdul4xSB-g-7CshZqqyGc16-sIO7nQl-TlBZj7ASPRjuFlxKKTpV1aKKcTZSiFrc3Wl2WpbifChvpkhE-wMFCfqfQpeqQ-pMctAhiM3hXyzASOKmu4P1lb245] For details and/or to register, visit the AFSA Calendar [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOKCHNt_NuiAEm76SXS6Vtcfxccgc5L1wOnvrJrXnviHGsYM8DWvkyeSSzAp2CBlHmRixb4q58v-4fxSlBjOh6YxpOWOaiwh7Hj-JyGA_K7C_RAAdNJieEOqYmVusCtpnyxVQmF5scoi1vjPRqqBgOI3jDzLRMikSverOOHsSuCB6bE4o6SdA0alBOD3kkS6pmz5Q1uDgGim8ALy6KrJTIplsi7lY-2YlfUK0vByDvGPFt1xRxNu0djfQTeEinVWpNDpy68p7-JsVYmxIVSuSzio]. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Free Subscription to Sprinkler Age [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOLxMtJjeCvUeQHPgmjzjpa2nGolNvVjeySKmNUkKWR1tU6czx90S0yycHx4zn0lybCOU9ioGxAX0Z7CEg5WzGqsbNNzwVDCepYAXQ8UEVYdogGdbPdLe9UYSzIGfIrIFqfh1S96_6c2oerRc3hIVukaHzUwloD4nWA=] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Quality Contractor [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOJOTBSrr4mows4JilPeyUsrS5YO-I52G9xwZKGi9Q3XxNiXiavib_LglAo84bAvdZvOKsDW0uUeSZJu5Us3V1DOADCTdLnryYZBsBRmo64SfrOHCU7X_K7i4o7Fu6zMRV2OQtzQCp-Ex8DL_qk6hNSKWBL1CYALwco=] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Quick Links Firesprinkler.org [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOLN_vHLNwQa9AXZjKGOjPJVon5N4gMdSshsR705kVjjvprYgoo-pW7Hgkv35Tl6ED750Guo1HF-s53yHx7eyj91JOgrjuglB-iuuAnOUw0p1g==] AFSA Calendar [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOKCHNt_NuiAEm76SXS6Vtcfxccgc5L1wOnvrJrXnviHGsYM8DWvkyeSSzAp2CBlHmRixb4q58v-4fxSlBjOh6YxpOWOaiwh7Hj-JyGA_K7C_RAAdNJieEOqYmVusCtpnyxVQmF5scoi1vjPRqqBgOI3jDzLRMikSverOOHsSuCB6bE4o6SdA0alBOD3kkS6pmz5Q1uDgGim8ALy6KrJTIplsi7lY-2YlfUK0vByDvGPFt1xRxNu0djfQTeEinVWpNDpy68p7-JsVYmxIVSuSzio] Buyer's Guide [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOKsA5R5eGwnthJB6au-pAwmdObovxpdbsrtzeCtxMUoFALnLdkTocXaFtYMViBGPcBvK0paGE9B2fYYtsrn7ymzF9hxAsNZY6SJGJXkVoidq43BzMWX6f8sTJIbIV7DqyUithdWNSM-Ag==] Join AFSA Video [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOLsO8nf00yFC2xrk2ZTGY-ox7pfwfygLy0WrXwN71v_90A7xTK1A3DGMxl_rzXZhXKd7qQPZVvuf7KkUv1R83jC3VGtvzJkTB6AjiqXB32BeBIjC8K_AgBehneOAo5k5g4gUwrAPcHqP0iWMuh4vwEr] National [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOIBekJadplxrj0BMCV6Gm0SBv1SWeRFFU8Utf9LieZVzDWLjmKap4H2aWqta8wMtAUv36VeXRUuKIJX3GH0DUnahnNDPW83PbRqzF0sKppbNA==] Scholarship Contest [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOIBekJadplxrj0BMCV6Gm0SBv1SWeRFFU8Utf9LieZVzDWLjmKap4H2aWqta8wMtAUv36VeXRUuKIJX3GH0DUnahnNDPW83PbRqzF0sKppbNA==] OSHA Alliance [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOLG_Jp7tIVKAKzEvTOi4UBfNp1GVCQR-8w-xLI73Si6R7qxhIsoUZ4PfnP-NQ1fhiqLw1q_9HIitAUJ8CEzdc9IiUl8JGjmroVoweE9wBbWzgO30KXCQCeUwu0Y_gKFkOEq9sQ7dHoBWM7_x29JPk4u] Technical Services [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOKWpUa1OoHvZvBbpIA2gUn3lGxjSv74es_3KtTPmm-5oljFFqkNmx-gnGloEenMYvQj6fRp7fqGklwy_XXWkIuafdE_DQ2bBGvVEV1onJ7Xq4U2NtunvppTaZjzkqXhjuQ=] Informal Interpretation Request Form [http://r20.rs6.net/tn.jsp?e=001lL-TmruSKOKHYRXr45pzxCXsvCM2VpS7CAs4-jI2ktPUsh-bFQKQs1VYOly-nnX9J1Uz6hkM0J-rnJGFFCB6t9NaTE5f5uZe56YiMwShZSfBi_qChEptESwtgZTNFr2BsrEWSkOQB-j0fhcKz1xtMlNetAzHNppWf40fWp0AmMc=] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Join Our Mailing List [http://visitor.constantcontact.com/email.jsp?m=1102312387686] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Forward email http://ui.constantcontact.com/sa/fwtf.jsp?llr=gdnaptcab&m=1102312387686&[email protected]&a=1112482553946 This email was sent to [email protected] by [email protected]. 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