Sure, we know there is the standard wall stud spacing, but how far are wall studs spaced apart around doorways? Well, well, it turns out that wall stud construction around doorways is a bit non-trivial, so let’s describe this with a picture, as well as the jargon used in the profession. Please note that these descriptions are specific to U.S. construction standards.
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The dimensions of a “2x4” are 1.5 by 3.5 inches. The dimensions of a “2x6” are 1.5 by 5.5 inches.
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Standard wall studs are typically 16 inches apart, except for some interior walls that might go 24 inches apart.
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Above and below wall studs are wall plates that protrude into the finished indoor space and would otherwise block doorways. Thus, you may need to cut away a wall plate that may interfere with the bottom of a door.
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Doorways are typically 30 to 31 inches wide.
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The studs immediately surrounding a doorway are trimmer studs. They are the height of the doorway.
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Immediately surrounding the trimmer studs are “king studs,” which is just another name for standard height studs.
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The top-edge of the doorway is bordered with a header, which is two studs plus a 0.5 inch plywood, at least in the case of using 2x4 studs.
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Between the header and the top wall plate are cripple studs, studs that are shorter than the full wall length.
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The finished edge of the doorway that holds the door closed is called the door jamb.
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The horizontal beams supporting the floor/ceiling are called joists.
20190820/DuckDuckGo how far apart are studs spaced for a doorway
20190820/https://www.hunker.com/12266809/what-is-the-distance-between-wall-studs
20190820/https://www.wikihow.com/Frame-a-Doorway
20190820/https://en.wikipedia.org/wiki/2%C3%974
20190820/https://en.wikipedia.org/wiki/Dimensional_lumber#North_American_softwoods
20190820/https://en.wikipedia.org/wiki/Framing_%28construction%29
20190820/https://en.wikipedia.org/wiki/Joist
Gosh, all this lingo, it really reminds you that in the old days, people worked with this kind of physical construction a lot. But once additive manufacturing scales up, the vocabulary will, sadly, become much more scarce. I know, it always when our world becomes more high tech and old professions die out.