It depends on the ribs, back ribs the only type we us come in various sizes even from the same butcher. Most back ribs will come with 12 to 14 ribs per rack, so cutting them in half each person will get 6 or 7 ribs. Some big eaters can eat a whole rack but most can eat half and that is a hardy meal. We served a buffet recently each guy got 3 ribs, a pulled pork sandwich and smoked beans. In that case a rack served 4 guys as long as each rack had 12 bones. Papa Bear's BBQ Caterting
Figure on at least 6 per guest.
There are either six or eight ribs.
Andy 6 broke 3 ribs.
12 pair : 6 thoracic & 6 floating.
you should see 6
13 pairs which consists of 7 pair "true" ribs and 6 pair "false" ribs.
Ribs 2 to 6
All attach to a vertebra, The upper 6 also attach to the sternum, the bottom 6 just "float".
Ribs 6-12 protect the liver along with the bottom of the sternum
The sternum, ribs 3-6 (3 on each side) and vertebra T 3-6 for a total of 10.
6 ft x 6 ft = 1828.8 mm * 1828.8 mm = 3,344,509.4 mm2 Area of each slab = 400*400 mm2 = 160,000 mm2 So minimum number of slabs = 3,344,509.4/160,000 = 20.9 ie 21 slabs. However, this requires almost all the offcuts to be used and, unless the shape is an exact number of tiles across, you will end up with an area that is a mosaic.