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Comment by raldi | Hacker News Reader

> if it’s shorter than the ceiling then the arms and back form this U.

I'm having a hard time understanding what you mean here.

Lift sofa upright, so i stands on one of the sides. If you look at it from above (like the animations), it’s now an L-shape (U-shape in the animations) with more space to move it around the corner.

If it's on its side, wouldn't it be a C? And how would that help get it around corners if, when viewed from above, all that matters is the footprint?

If a door opens to a narrow hallway, it may be possible to put the couch upright (making an L shaped footprint viewed from above) and then work it through the doorway into the hall. If it's a really narrow hallway, you may have to continue like that.

If it's an L we're talking about the back and the seat, right? But OP didn't say seat; they said arms.

I said arms and back (I had to double check I didn't misspeak). The arms stick up higher than the seat. So the concave surface defined by the back and the arms is most of what will limit you getting through the straight edges of a doorway.

There are a few couches where the seat sticking out past the front of the arms causes problems, and a few handrails in stairways that you can sneak between the arms of course, but probably nine times out of ten it's just the obtuse angle between the back and the arms that is your constraint. And that angle plus the rest of the couch around it looks a lot more like the cutout in the linked article than an L. Which is kinda the reason I brought it up.

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