<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.sa98839a8-886b-48fe-9b29-c22f87e425a2P0 { margin-top: 0; 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; line-height: 108%; } span.sa98839a8-886b-48fe-9b29-c22f87e425a2C0 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000000 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000001 { color: black; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.sa98839a8-886b-48fe-9b29-c22f87e425a2000002 { color: black; background: white; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000003 { color: #0000FF; background: white; font-family: 'Times New Roman', 'serif'; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } p.sa98839a8-886b-48fe-9b29-c22f87e425a2P0-000004 { margin-top: 0; margin-bottom: 0; margin-left: 0; margin-right: 0; text-indent: 0.00in; text-align: left; background: white; font-family: Times; font-size: 12pt; line-height: 108%; } span.sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000005 { color: black; background: white; font-family: Times; font-size: 12pt; font-style: normal; font-weight: bold; margin: 0; padding: 0; } span.sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006 { color: black; background: white; font-family: Times; font-size: 12pt; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.sa98839a8-886b-48fe-9b29-c22f87e425a2C2 { color: #0000FF; background: white; font-family: Times; font-size: 12pt; text-decoration: underline; font-style: normal; font-weight: normal; margin: 0; padding: 0; } span.sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000007 { color: black; background: white; font-family: Times; font-size: 12pt; text-decoration: underline; font-style: normal; font-weight: normal; margin: 0; padding: 0; } </style></head><body><div><p dir="ltr" class="sa98839a8-886b-48fe-9b29-c22f87e425a2P0"><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">    </span><a href="https://sdlegislature.gov/Rules?Rule=44:70:10:23"><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000000">44:70:10:23</span></a><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000001">.  Ducts.</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> Each duct </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">must</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> be constructed of iron, steel, aluminum, or other approved metal or materials as defined in </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">NFPA 101 Life Safety Code, 20</span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">12</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> edition</span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">, § 32.3.6.2.1</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">. Duct linings, coverings, vapor barriers, and the adhesives used for applying them </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">must</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> have a flame spread </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">index</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> of not more than </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">twenty-five</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> and a smoke </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">emission</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> rating of not more than </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">fifty</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> using </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">ASTM E84-23D</span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">, 20</span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">10</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> editi</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">on, Standard </span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">Test </span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">Method for Surface Burning Characteristics of Building Materials. Each cold air duct </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">must</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> be insulated wherever necessary to maintain the efficiency of the system or to minimize condensation problems.</span></p><p dir="ltr" class="sa98839a8-886b-48fe-9b29-c22f87e425a2P0"><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2000002"> </span></p><p dir="ltr" class="sa98839a8-886b-48fe-9b29-c22f87e425a2P0"><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">    </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000001">Source:</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> 38 SDR 115, effective January 9, 2012; 46 SDR 65, effective November 26, 2019</span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">; 50 SDR 19, effective August 30, 2023; 51 SDR 53, effective November 11, 2024</span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">.</span></p><p dir="ltr" class="sa98839a8-886b-48fe-9b29-c22f87e425a2P0"><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">    </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000001">General Authority:</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34-12-13"><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000003">34-12-13</span></a><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">.</span></p><p dir="ltr" class="sa98839a8-886b-48fe-9b29-c22f87e425a2P0"><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">    </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000001">Law Implemented:</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> SDCL </span><a href="https://sdlegislature.gov/Statutes?Statute=34-12-13"><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000003">34-12-13</span></a><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">.</span></p><p dir="ltr" class="sa98839a8-886b-48fe-9b29-c22f87e425a2P0"><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2000002"> </span></p><p dir="ltr" class="sa98839a8-886b-48fe-9b29-c22f87e425a2P0-000004"><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">    </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000001">References:</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0"> </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000005">ASTM E84-23D</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006">, 2010 </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006">edition, Standard</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006"> Test </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006">Method for Surface Burning Characteristics of Building Materials. Copies may be obtained at</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006"> </span><a href="https://www.astm.org/e0084-23d.html"><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C2">https://www.astm.org/e0084-23d.html</span></a><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006">. Cost:</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006"> $119.00</span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006">.</span></p><p dir="ltr" class="sa98839a8-886b-48fe-9b29-c22f87e425a2P0-000004"><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2000002"> </span></p><p dir="ltr" class="sa98839a8-886b-48fe-9b29-c22f87e425a2P0"><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006">    </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000005">NFPA 101 Life Safety Code</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006">, 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="sa98839a8-886b-48fe-9b29-c22f87e425a2C2">https://www.nfpa.org/product/nfpa-101-code/p0101code?Edition=2012&amp;Language=English&amp;Format=Softbound&amp;type=digital</span></a><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006">. Cost:</span><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000007"> </span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0-000006">$160.00</span><span class="sa98839a8-886b-48fe-9b29-c22f87e425a2C0">.</span></p><p dir="ltr" class="sa98839a8-886b-48fe-9b29-c22f87e425a2P0"><span xml:space="preserve" class="sa98839a8-886b-48fe-9b29-c22f87e425a2000002"> </span></p></div></body></html>