by angib » Sat Sep 27, 2008 7:26 am
The trick is that the height determines whether you have a "sitting up" or a "relaxing" seating position.
Higher seats (say, 16-18") are best for eating at the table and they also help shorten the leg space required - if you sit very upright, you can squeeze two facing people and a table into less than 6 feet.
Lower seats (say, 12"-14") are better for lounging around, reading, watching telly, etc, though they spread you out so you need more length - it's harder to get two people sitting facing each other, unless they do a "you put your legs there and I'll put mine here" sorta thing.
In each case, these heights are measured to the middle of the cushion - for most ordinary foam upholstery, it's reasonable to assume that it will squish down to half its original height when sat on. So Mike's are 14" by this method - 12" solid plus half of a 4" cushion.
Table height needs to be related to seat height - somewhere around 12" above the mid-cushion height. Table height works 'the other way round' to seat height - if the table is high relative to the seat (say, 14"), you need lots of elbow room, whereas if it's low relative to the seat (say, 10"), you can eat with your elbows in by your sides, so that needs less width.
Andrew