Laserfiche WebLink
I. Makeup air <br />1. App1� :ant shall provide makeup air not less than 90% of the exhaust. ��• <br />2. Make�ip air sy:tem shali be eiectrically interiocked with ihe exhaust system, uch that the makeup air <br />systerr� will operate when the exhaust system is �n operation. Provide note on plan sheet no. <br />3. Makeup air shall be provided by a tan or motorized damper of sufficient capacity. Windows and door <br />openings shall not be used for ihe purpose of providing makeup air. <br />4. If more lhan 2500 cfm supplied to ihe space other than the hood, provide heater capable of heaGnq � <br />makeup air supplied to the space 1�, 65 degrees F. <br />Heater model ti Input BTU Output BTU , <br />Heater CFM AFUE _�- <br />, G ly��/�6�"��� ���s�n �o <br />FAN �,,�E�i ���4 .�yf� � � p� � "/ � MO70 IZE <br />Make and model <br />Static pressure T�� <br />a <br />Duct Dimension � <br />Air velocity = cfm/area <br />H.P. <br />D in. at cfm. <br />area •�22I^ flz <br />� 11�— <br />Recommended air velocity, 500 fpm ' <br />Duct area req. = ctM5�:10 fpm /500 =_ftz <br />Duct. Dimension req. _ <br />Eff. Damper opening _ <br />J. Slope of duct and cleanout access � !V /� <br />f� <br />1. Horizontai duct less than 75' long min slope 1/4 in/ft <br />rt�orelhan 75' long min siope 1 in/ft <br />2. Tight-(itting cleanout doors shall be provided at <br />every change in ductwork direction. <br />K. Duct enclosure <br />proposed <br />proposed <br />X_= ft� <br />Total no. proposed <br />in/(t <br />in,�t <br />1. Ducts penetraling a ce�i :�, wall or tloor shall be enclosed in a duct enclosure (rom the point of <br />penetration to the outside air. A duct may only penetrate exterror walls at locations where unprotected <br />openings are permitted by Table 5A of the 1997 Searile Building Code. <br />2. For code cornpliance purposes, it is acceptable to assume that ducts peneVaGng concrete, brick a steel <br />ceilings, walls or iloors shall require a 2-hour fire-resistive duct enclosure, and fw others, it shall be 1 hour. <br />Type of Const. Min. Fire-Resistive Proposed Proposed Material and Constructlon <br />Const. oi Enclosure <br />� <br />I F.R., II F.R. 2 hour _ hr. �/ <br />11, III, IV, V 1 hour .�. h�• �' ��GiV��7_ 1�Yt"'X� 2�2 ��� <br />3. Duct enclosures sF�ap be separated from the duct by at least 3 and not mae than 12 �. R'oposed J <br />4. Duct enclosure shall be sealed around the duct at the point oi penetration and vented to the exteria <br />through a weather-protected opening. <br />5. Duct enclosures shall serve only one kitchen exhaust duct. <br />6. Tight-fitting access openings shall be provided at each clearaut door. Access enclosure doors shall <br />have a fire-resistance rating equal to the enclosure. <br />L MuRiple hood venting <br />1. Number of hoods vented by a single duct system: � <br />A single duct system may serve more than one hood located in the same story of the building, provided <br />that the interconnecting ducts do not peneVate any fire consVuction. <br />2. A hood outlet shall serve not more than a 12-foot section of hood. <br />Sheet �� <br />