Welcome the aboveground storage tank forum, a bulletin board dedicated to tanks, fuel tanks, plastic tanks, fuel storage tanks, and above ground storage tanks for engineers, tank operators, maintenance personnel, and technicians who work on or around these aboveground storage tanks (AST) and chemical plastic tanks. http://www.ast-forum.com 2/6/2012 8:33:52 PM http://www.ast-forum.com/images/earl_clear.gif http://www.ast-forum.com/ AST Aboveground Storage Tank Forum RSS 180 150 Sorry to be persistent but I have seen several tank-within-a-tank installations and they were all quite serviceable. I did at one time design and install a pair of floating roofs in such a configuration - one round one inside the inner tank and one donut shaped in the space between the two tanks. As far as I know they are still floating. A partition is not an inherently stable or strong structure. Im sure you can do it though, with enough bracing and stiffening - not that different from a rectangular tank of which I have been involved with also. Anyway, good luck and please let us know what you decide to do and how it works out. http://www.ast-forum.com/ast_forum_tree.asp?master=14834 Thu, 2 Feb 2012 23:02:00 -0300 I consider the implications of design and construction of a tank into another, are much more complicated.<br /><br /> Thanks for your comment http://www.ast-forum.com/ast_forum_tree.asp?master=14834 Thu, 2 Feb 2012 13:40:00 -0300 Space constraints are critical it is not possible install more tanks.<br /><br />Thank for your interest. http://www.ast-forum.com/ast_forum_tree.asp?master=14834 Thu, 2 Feb 2012 13:34:00 -0300 Thanks. http://www.ast-forum.com/ast_forum_tree.asp?master=14838 Thu, 2 Feb 2012 02:27:00 -0300 this is really a question for your geotech engineer<br /> http://www.ast-forum.com/ast_forum_tree.asp?master=14847 Tue, 31 Jan 2012 22:41:00 -0300 In fact I had already visited your Web Site but was given the impression that Tank Connections does not actually have manufacturing facilities but is rather loose association of contractors primarly in USA and Austrailia. It was the actual manufacturers of the Dome and Deck I was looking for, not their agents. However thank you very much for the reply and bringing the advertisement to my attention. http://www.ast-forum.com/ast_forum_tree.asp?master=14839 Tue, 31 Jan 2012 14:42:00 -0300 There is an advertisement at the top of this page for aluminum domes as manufactured by Tank Connection Affiliate Group. http://www.ast-forum.com/ast_forum_tree.asp?master=14839 Tue, 31 Jan 2012 09:54:00 -0300 Thank you all for the very informed comments, I appreciate the time take to help located manufacturers of the Aluminum Dome and Deck.I have to say that I am surprised there are so few companies manufacturing the Dome.<br /><br />I understand the limitations on the CFRT market as this is not an international requirement as far as control of emissions is concerned but using aluminum as an alternative to steel in the conventional fixed roof would seem to me to be a significant international market? http://www.ast-forum.com/ast_forum_tree.asp?master=14839 Tue, 31 Jan 2012 02:32:00 -0300 There are no small dome vendors.<br />There are quite a few small floating roof vendors - some good, some better.<br />If you want both domes and floating roofs, stop looking.<br />If you want premium floating roofs you may have to go to separate vendors. http://www.ast-forum.com/ast_forum_tree.asp?master=14839 Mon, 30 Jan 2012 16:57:00 -0300 Gentlemen:<br /><br />We did soil study and found 40 000 KGS/MT2 @ deep 1.50 mts. We are made the excavation and we are get the 1.50 mts.<br /><br />The structural designer calculate the ring wall for this capacity of the soil. Our question is? if necessary do soil test or compaction the soil for proceed with the ring wall.<br /><br />Regards<br />Rober Cruz http://www.ast-forum.com/ast_forum_tree.asp?master=14847 Mon, 30 Jan 2012 15:58:00 -0300 Allentech, Inc. out of Allentown, Pennsylvania makes a good quality floating roof at a competitive price. http://www.ast-forum.com/ast_forum_tree.asp?master=14839 Mon, 30 Jan 2012 09:01:00 -0300 Should be able to install a funnel with a slotted membrane like you would for a gauging point and pass the cable through there. http://www.ast-forum.com/ast_forum_tree.asp?master=14838 Mon, 30 Jan 2012 08:57:00 -0300 Installing a divider plate/barrier is feasible, I suppose, but Ive never seen or even heard of this being done. As mentioned, the divider plate would be very weak without lots of structural support because I dont think you could be assured the liquids would be at the same level all the time, creating differential pressure issues.<br /><br />With the engineering challenges, amount of design cost, and the manufacturing cost to put in a divider, I would seriously consider installing a second tank for the second fluid. http://www.ast-forum.com/ast_forum_tree.asp?master=14834 Mon, 30 Jan 2012 08:55:00 -0300 I think you can also try VACONO USA in Cleveland http://www.ast-forum.com/ast_forum_tree.asp?master=14839 Mon, 30 Jan 2012 08:15:00 -0300 This is a very limited market and everyone that is in it is selling to the same customers. There is a lot that goes into manufacturing and installing these. Depending on the tank diameter, a open top roof with a dome may be more expensive than a fixed roof with a IFR.<br /><br />Most tank owners that needed a dome on a existing open top roof has one on. So the manufacturers of the domes pretty much can sell only to new tanks. And this gets to the cost benefit of a dome vs a fixed with IFR. http://www.ast-forum.com/ast_forum_tree.asp?master=14839 Sun, 29 Jan 2012 11:48:00 -0300 Tankee, thanks for Baker/Altech. It is surprising how few manufacturers there are for the Dome - I wonder why that is? http://www.ast-forum.com/ast_forum_tree.asp?master=14839 Sun, 29 Jan 2012 02:18:00 -0300 Baker/Altech is located southeast of Dallas and they build aluminum IFRs. They used to build the geodesic domes, as well, but I believe they stopped doing that a few years back. http://www.ast-forum.com/ast_forum_tree.asp?master=14839 Sat, 28 Jan 2012 07:45:00 -0300 I am trying to find a manufactuer of the Aluminum Geodesic Dome Roof API 650 G and the Aluminum Internal Deck API 650 H based in the USA. I already have the major players, Temcor, Ultraflote, Conservatek and HMT but would really like to see if there are others. It would not be necessary for them to manufacture both the Dome and Deck, just as long as they actually have track record of manufacturing one or both of them. http://www.ast-forum.com/ast_forum_tree.asp?master=14839 Fri, 27 Jan 2012 11:07:00 -0300 I need to pass through the roof of the TK one cable connecting ZN cell for cathodic protection measurement inside of the TK and measurement post outside the TK.<br />I was checking out API 650 looking for information about the subject, but I did not find anything, so may be some of you faced the same problem and has a recommendation about how to do that in accordance with the code. http://www.ast-forum.com/ast_forum_tree.asp?master=14838 Fri, 27 Jan 2012 04:04:00 -0300 The plate boundary needs special design considerations as it is not very strong in that direction unless the liquid height is always the same in both sections. Can you use instead a tank within a tank? http://www.ast-forum.com/ast_forum_tree.asp?master=14834 Thu, 26 Jan 2012 18:37:00 -0300