SS Door Frames

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Author Message Ralph Liebing, RA, CSI, CDT Senior Member Username: rliebing Post Number: 1068 Registered: 02-2003 Posted on Friday, October 02, 2009 - 09:31 am:    Please share your insight and recommendations for bent plate stainless steel door frames in food processing operations: Type of SS-- 304? 304L? 316? Thickness of plate-- 1/4"? 3/16"? 7-gage? Finish of SS-- 2B applied? 2B mill? Is finish tied to thickness? William C. Pegues, FCSI, CCS Senior Member Username: wpegues Post Number: 796 Registered: 10-2002 Posted on Friday, October 02, 2009 - 09:34 am:    Just for curiosity, why plate? Why not readily available stainless steel hollow metal frames? William C. Pegues, FCSI, CCS, SCIP Affiliate WDG Architecture, Washington, DC | Dallas, TX Ralph Liebing, RA, CSI, CDT Senior Member Username: rliebing Post Number: 1069 Registered: 02-2003 Posted on Friday, October 02, 2009 - 11:17 am:    Heavy-hitter client, facility management request! Lynn Javoroski CSI CCS LEEDŽ AP SCIP Affiliate Senior Member Username: lynn_javoroski Post Number: 933 Registered: 07-2002 Posted on Friday, October 02, 2009 - 11:33 am:    I'd guess that 304 would be sufficient in food processing unless there're acids present. MasterSpec goes up to the old 12 gage (.109 inch) thick for frames. Finish would be an aesthetic issue, I think - bright or dull? Bright might give the appearance of greater cleanliness, as long as it's cleaned. George A. Everding, AIA, CSI, CCS, CCCA Senior Member Username: geverding Post Number: 486 Registered: 11-2004 Posted on Friday, October 02, 2009 - 11:45 am:    Just as a point of information, we found out on our last project that Security Metal Products is one of the few manufacturers of stainless steel doors and frames, and they sell to many of the other manufacturers of hollow metal that you may be used to specifying. I guess that stainless steel doors are such a specialty item with a limited market that most of the standard hollow metal companies have outsourced them to Security. http://www.secmet.com/stainless.php George A. Everding AIA CSI CCS CCCA Cannon Design - St. Louis, MO Wayne Yancey Senior Member Username: wayne_yancey Post Number: 264 Registered: 01-2008 Posted on Friday, October 02, 2009 - 11:47 am:    Ralph, The thicknesses you quoted may limit the number of manufacturers that have the equipment to bend the heavier materials into a typical frame profile with or without back bends. The frames may be welded with planted stops from solid bar stock. Are frames for doors or cased openings? I do not see why #4 finish cannot be used. #4 satin finiah is typcial for elevator hoistway frames and doors. Jerome J. Lazar, RA, CCS, CSI, SCIP Senior Member Username: lazarcitec Post Number: 702 Registered: 05-2003 Posted on Friday, October 02, 2009 - 04:41 pm:    My 2 cents: Next Door Company - http://www.nextdoorco.com/comm_f.htm Had good luck specifying them in past. J. Peter Jordan Senior Member Username: jpjordan Post Number: 363 Registered: 05-2004 Posted on Friday, October 02, 2009 - 07:13 pm:    Way back a long time ago, I learned that there was a thickness at which steel sheet became steel plate, but along the way, that puka seems to have emptied itself of the distinction. A critical point is that if the stuff is fabricated by bending, the inside radius of the stuff will be at least equal to the thickness so that bending a 3/16 inch plate will result in an outside radius of 3/8 inch. I believe this has to do with the properties of the material. If they are thinking 1/4-inch plate, this may become unreasonable. The alternative would be to weld the stuff together, and at that point you would probably not be talking about "hollow metal" but something in Division 05. This sounds to me like someone who thinks more is better. I know that less is not always more, but more is not always better. Does someone in these facilites drive an M1A1 Abrams main battle tank? Mark Gilligan SE, CSI Senior Member Username: mark_gilligan Post Number: 219 Registered: 10-2007 Posted on Friday, October 02, 2009 - 07:50 pm:    The differentaiation between bar,strip, sheet, and plate is dependent upon the thickness and the width of the material. I would offer the following rules that while not always strictly correct are workable. --Material equal or over 1/8 inch thick should be refered to as plate. It should be specified in terms of inches. --Material thinner than 1/8" to be referred to as sheet and specified in terms of gage or mils. Because of the different definitions of gage mils is becomming the prefered designation. --If the manufacturer uses gage measurements in his literature use the same in your documents.