Leo Miregalitheo

Welcome to Wikimedia Commons, Leo Miregalitheo!

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-- Wikimedia Commons Welcome (talk) 18:56, 20 March 2023 (UTC)

Category:Aluminium_window_fitter

Thank you very much for the information.--Carolina Latorre Canet (talk) 10:56, 4 May 2023 (UTC)

Category:Steel with fireproof coating

Hello: I think your intentions are honourable here, but I suggest you re-consider the terminology. And I say this as a vioting member on the ASTM E05 committee. There is no such thing as a "fireproof coating". "Fireproofing" is a trade term. It exists as such, which is fine, though it is factually incorrect, and manufacturers of any fireproofing materials will be the first to confirm this. "Fireproof", as an adjective, indicates that it is immune to fire, regardless of intensity, duration, or whether there is direct flame impingement. That is simply not the case. When we test fireproofing materials, E119 and/or any of its cousin standards, internationally, require us to instrument the uncoated steel with thermocouples, in order to measure when the critical temperature, typically 538°C or 1000°F, is reached. As soon as that temperature is reached, which is a function of the efficacy and thickness of the coating, as well as how massive the structural steel is, the test is over at that point in time, because the load carrying capacity of that steel element can no longer be guaranteed. Different countries can set that critical temperature at different levels, for the purpose of qualifying tests that conform to the local building codes. But the concept is the same and has been for well over 100 years. In order to be competitive, vendors of fireproofing materials must test in such a way that the minimum required material is applied. If a vendor passes, let's say, with 45 minutes of margin, chances are that he or she will be economically forced to come back and re-test with less material, closer to the wire, simply in order to compete. Therefore, a 2-hour rated system, is unlikely to last for 2 hours and 15 minutes of a design basis fire, simply because of economics, which means that the whole system is by no means "fireproof", or immune from any fire. Case and point: 9-11. When aircraft slammed into the twin towers and unloaded fuel onto each impacted floor, and then ignited, that was a hydrocarbon fire, which we simulate with UL1709, not ASTM E119. You can buy UL1709 rated fireproofing, no problem, but high rise office buildings are not expected to defeat oil refinery fires. E119 is a cellulosic curve (based on biurning wood). You need more fireproofing to do the same job per UL1709 that worked out OK for the same lengt of rating under the ASTM E119 regime. Therefore, you can say "fireproofing coating", or just "fireproofing", which is the original category, because what is meant is any material used in the trade, which could also be boards or varying types, such as pressed vermiculite, gypsum or calcium silicate. The Japanese have an intumescent tape, used in fireproofing, for example. It's still all "fireproofing", with no need for another word. All these methods are free to compete against one another. But to say "fireproof coating", gives the false impression of immunity to fire. I ask you to consider, therefore, reversing the changes you made. You can subdivide fireproofing by the different methods (fibrous spray, cementitious spray, intumescent, endothermoc, ablative), as well as by application. You can fireproof structural steel as well as electrical circuits, tunnel linings, trench headers inside of cast concrete floors or Q-deck floors with cast concrete on top. That's fair game, though we do not currently have that many pictures, that it would seem a pressing necessity to sub-categorise to the point where you have 10 categories with 1 or 2 pictures each, at your option.--Achim Hering (talk) 16:03, 19 May 2023 (UTC)

Thank you for the reality check! I kept the category but with cat:Fireproofing coating. I also mentioned your notes on application and materials in cat:Fireproofing, thanks also for those. --Leo Miregalitheo (talk) 19:51, 19 May 2023 (UTC)

Thanks for being open-minded about that and acting accordingly. Achim Hering (talk) 14:19, 24 May 2023 (UTC)

Could you please look at Commons:Categories for discussion/2021/11/Category:Dressers?

Dear Leo Miregalitheo, You seem to have knowledge about carpentry. Do you also have knowledge about cabinets and dressers? If yes, would you please look at Commons:Categories for discussion/2021/11/Category:Dressers? Perhaps you might have an answer to question 2, which is still open. JopkeB (talk) 09:53, 7 August 2023 (UTC)

Did as you requested

Thank you for noticing the problemǃ Krok6kola (talk) 14:07, 10 August 2023 (UTC)