Overhead Coiling Grilles Operation Cy...

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Author Message Jerome J. Lazar, RA, CCS, CSI, SCIP Senior Member Username: lazarcitec Post Number: 706 Registered: 05-2003 Posted on Monday, November 02, 2009 - 10:00 am:    How does one determine the Operation Cycle requirements for an Overhead Coiling Grille. We usually specify 100,000, however we have been asked to explain why, any help on this would be appreciated? Also what do my fellow spec writers specify for operation cycles? Lynn Javoroski CSI CCS LEEDŽ AP SCIP Affiliate Senior Member Username: lynn_javoroski Post Number: 955 Registered: 07-2002 Posted on Monday, November 02, 2009 - 10:11 am:    I usually ask the Owner (generally through the PA) to estimate the use of the door or grille. If it will be opened and closed once a day (opened once and closed once, that is), for example, lower requirements can be specified than if it is being opened and closed 20 times a day. A door on a emergency room will require higher cycle requirements than one for a cafeteria. (Unregistered Guest) Unregistered guest Posted on Monday, November 02, 2009 - 10:24 am:    Some manufactueres advertise their coiling doors or grilles for 50,000 cycles as standard use. Others advertise five cycles a day as standard use. I'm not sure how anyone came up with these numbers. I'd say 100,000 lifetime cycles is going to increase the price of the grille and puts the grille in the heavy use catagory. Is this grille going to get a lot of use? Jerome J. Lazar, RA, CCS, CSI, SCIP Senior Member Username: lazarcitec Post Number: 707 Registered: 05-2003 Posted on Monday, November 02, 2009 - 11:10 am:    This is a highrise condominium building with a 400 car parking garage, what is considered reasonable for number of times per day that the grille would open and close, is a grille designed and fabricated for a set number of openings/closings or are there any industry standards that are followed. Of course the owner nor the architect are wiling to advise on this, and there are no other consultants involved to render an educated guess. Dave Metzger Senior Member Username: davemetzger Post Number: 340 Registered: 07-2001 Posted on Monday, November 02, 2009 - 11:11 am:    20,000 cycles (which some manufacturers note as standard) equates to 5 to 6 open/close cycles a day for 10 years. My understanding is that the number of cycles does not affect the engineering of the grille/door so much, but influences the selection of springs and motor. Nathan Woods, CCCA, LEED AP Senior Member Username: nwoods Post Number: 319 Registered: 08-2005 Posted on Monday, November 02, 2009 - 11:34 am:    I do a lot of multi-family work (or did during the good economy). Thanks to others on this forum, I was turned to Rytec doors a while back when I needed a high speed, high frequency door for a condo project. The Rytec "Clear-Shield" door we spec'd and installed has been outstanding. We actually had to turn down the speed because it was unsettling to watch it roll up and down at full speed. Grown men would giggle out loud at the speed of this door. References to Star Wars-esq door operation are not uncommon. I don't recall the specifics, but I remember Rytec saying the door would last "millions" of cycles if people don't hit it with their cars. Based on the speed of this door, impact strikes are unlikely to happen. Lynn Javoroski CSI CCS LEEDŽ AP SCIP Affiliate Senior Member Username: lynn_javoroski Post Number: 958 Registered: 07-2002 Posted on Monday, November 02, 2009 - 12:20 pm:    Glad to hear of your experience with Rytec; that's been mine, too. I spec'd it for heated museum parking (under the museum itself). In the process of writing the specs, I was invited to tour their factory. Once done with the tour, I was even more convinced they had the right doors and fought to keep it in the spec. I won - and so did the museum.