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Subject: двутавры Дорогие коллеги.Прошу извинить за простой вопрос, очень поджимает время и некогда читать много литературы. Двутавры - I-beam или T-beam? (балки из прокатных двутавров) Спасибо и сильно не ругайте. Оба варианта вижу в словарях. |
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Оба варианта вижу в словарях. Это хорошо, что в словарях видите. А в жизни тавр и двутавр видеть не приходилось? Тавр - T beam, двутавр H-beam. Зайдите на ближайшую стройку, полюбуйтесь. |
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link 23.08.2021 19:37 |
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I-beam -- because of its cross-section shape. Think of a Western capital letter 'I' (with serifs), as opposed to a capital letter 'T'. I-beams have a flange at the top and bottom (дву......); T-beams have a flange at the top (or bottom) only. Look up "двутавры" in Google Images, then "I-beams" and finally "T-beams", and you'll see the difference. Some people call 'I-beams' 'H-beams' -- possibly because, when a capital letter 'I' is printed in a non-serif typeface, the serifs (='flanges') at the top and bottom of the letter don't appear. |
| I-beams и H-beams — не одно и то же. H-beams — это двутавр с широкой полкой, или широкополочный двутавр. |
| Во... вот тут нарисовано: https://www.quora.com/What-is-the-difference-between-an-H-beam-and-I-beam-How-are-they-used-differently |
| Благодарю сердечно, да по рисунку понятнее, чем по описанию. |
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link 23.08.2021 21:45 |
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AsIs: OK, so you're saying that the flanges on an I-beam taper slightly towards the edges, whereas the flanges on an H-beam don't taper and are the same thickness throughout. That's fair enough -- but I've just checked in Wikipedia and elsewhere online, inc several US steel companies' websites (eg https://tampasteel.com/difference-between-h-beam-i-beam ) and they define an H-beam and I-beam as follows: " H-beam: H-beams have top and bottom flanges that stick out further from the web [=the vertical part of the beam] than the flanges on I-beams." " I-beam: I-beams have top and bottom flanges, but they are shorter and are not as wide as on H-beams." These and other definitions I've seen don't refer to whether the flanges taper or not; they simply refer to their width. I'm not a native Russian-speaker, but could it be that, whether the flanges are wide or narrow, and whether they taper towards the edges or not, a двутавр could refer to either an I-beam or an H-beam? If so, to avoid complicating matters and to save adelaida time, I suggest that she translates двутавры as "I- or H-beams" -- to cover both types. One thing we can probably agree on, though, is that a двутавр isn't a T-beam. Agreed? |
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link 23.08.2021 21:59 |
| AsIs: Correction: I've just re-read the Tampa Steel page and you're right that I-beams also usually have tapered flanges -- but as I don't know whether двутавр is specific enough to refer to how wide the flanges on them are, or whether the flanges are tapered or not, I still suggest "I- or H-beams" to cover all types. |
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RE: so you're saying that the flanges on an I-beam taper slightly towards the edges No, I am not. The main difference between them is that " I-beam has tapered edges where an H-beam does not" (source: https://civilengineersforum.com/h-beam-vs-i-beam/). That's true, but I did not mention it anywhere in my comments above. What I said was широкполочный (translates to "wide flange") which means exactly what you quoted from Wikipedia: "stick out further from the web" and "simply refer to their width". Nothing in my comments contradicts your findings. What regards "T-beam", obviously I do agree, it is not a двутавр. |
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link 24.08.2021 7:05 |
| все-таки beam – это балка, разновидность двутавра, а общее название – I-sections (из которых выделяют I-beams и в английском языке, а по-русски – это ближе к двутавру нормальному, но не исключено, что есть нюансы, я особо не углублялся), а также H-sections (который по-нашему двутавр широкополочный; дисклеймер: я не разбираюсь в сабже, в переводах и вообще ни в чем; пожалуйста, не надо к моим советам прислушиваться |
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