<html xmlns="http://www.w3.org/1999/xhtml"><head><meta charset="UTF-8" /><title></title><meta name="Generator" content="PowerTools for Open XML" /><style>span { white-space: pre-wrap; } p.s44a58c0b-7894-4f09-901e-24d2692ea0b0P0 { margin-top: 0; line-height: 12.0pt; margin-bottom: 0; margin-left: 0; margin-right: 0; text-indent: 0.00in; text-align: justify; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; } span.s44a58c0b-7894-4f09-901e-24d2692ea0b0C0 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000000 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000001 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s44a58c0b-7894-4f09-901e-24d2692ea0b0000002 { color: black; background: white; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000003 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000004 { color: black; background: white; font-family: Times; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000005 { color: black; background: white; font-family: Times; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000006 { color: black; background: white; font-family: Times; font-size: 12pt; text-decoration: underline; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s44a58c0b-7894-4f09-901e-24d2692ea0b0C2 { color: #0000FF; background: white; font-family: Times; font-size: 12pt; text-decoration: underline; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.s44a58c0b-7894-4f09-901e-24d2692ea0b0C2-000007 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; text-decoration: underline; font-style: normal; font-weight: normal; margin: 0; padding: 0; } </style></head><body><div><p dir="ltr" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0P0"><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">    </span><a href="https://sdlegislature.gov/Rules?Rule=44:75:13:25"><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000000">44:75:13:25</span></a><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000001">.  Ducts.</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">A facility shall ensure its d</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">ucts </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">are</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> constructed of iron, steel, aluminum, or other approved metal or materials as defined in </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">NFPA 101 Life Safety Code</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> 2012 edition</span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">, section 32.3.6.2.1</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">. Duct linings, coverings, vapor barriers, and the adhesives used for applying them </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">must</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> have a flame spread </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">index</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> of not more than </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">twenty-five</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> and a smoke </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">emission</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> rating of not more than </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">fifty</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> using </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">ASTM E84-23D, 2010</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> edition, Standard </span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">Test </span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">Method for Surface Burning Characteristics of Building Materials. A fire and smoke damper </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">must</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> be provided on each opening through each required two-hour or greater fire-resistive wall or floor and on each opening through the walls of a vertical shaft, unless the shaft has a fire and smoke damper at the floor level. Access for maintenance </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">must</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> be provided at all dampers. Duct systems serving hoods </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">must</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> be constructed of corrosion resistant material. Duct systems serving hoods in which highly radioactive materials and strong oxidizing agents are used </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">must</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> be constructed of stainless steel for a minimum distance of ten feet</span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">,</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> </span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">or </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">3.05 meters</span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">,</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> from the hood and </span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">must be </span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">equipped with washdown facilities. Each cold air duct </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">must</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> be insulated wherever necessary to maintain the efficiency of the system or to minimize condensation problems.</span></p><p dir="ltr" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0P0"><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0000002"> </span></p><p dir="ltr" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0P0"><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">    </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000001">Source:</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> 42 SDR 51, effective October 13, 2015</span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">; 50 SDR 62, effective November 27, 2023; 51 SDR 53, effective November 11, 2024</span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">.</span></p><p dir="ltr" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0P0"><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">    </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000001">General Authority:</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34-12-13"><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000003">34-12-13</span></a><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">.</span></p><p dir="ltr" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0P0"><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">    </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000001">Law Implemented:</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34-12-13"><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000003">34-12-13</span></a><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">.</span></p><p dir="ltr" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0P0"><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0000002"> </span></p><p dir="ltr" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0P0"><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">    </span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000001">References: </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000004">ASTM E84-23D</span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000005">, 2010</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000005"> edition, Standard</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000005"> Test</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000005"> Method for Surface Burning Characteristics of Building Materials. Copies may be obtained at</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000006"> </span><a href="https://www.astm.org/e0084-23d.html"><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C2">https://www.astm.org/e0084-23d.html</span></a><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000005">. Cost:</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000005"> $119.00</span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">.</span></p><p dir="ltr" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0P0"><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0000002"> </span></p><p dir="ltr" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0P0"><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">    </span><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0-000001">NFPA 101 Life Safety Code</span><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">, 2012 edition, National Fire Protection Association. Copies may be obtained at </span><a href="https://www.nfpa.org/product/nfpa-101-code/p0101code?Edition=2012&amp;Language=English&amp;Format=Softbound&amp;type=digital"><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C2-000007">https://www.nfpa.org/product/nfpa-101-code/p0101code?Edition=2012&amp;Language=English&amp;Format=Softbound&amp;type=digital</span></a><span class="s44a58c0b-7894-4f09-901e-24d2692ea0b0C0">. Cost: $150.50.</span></p><p dir="ltr" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0P0"><span xml:space="preserve" class="s44a58c0b-7894-4f09-901e-24d2692ea0b0000002"> </span></p></div></body></html>