Exo 27:12-16
“As for the breadth of the court on the west side, (there shall be) curtains fifty cubits; their pillars twenty; and the breadth of the court towards the front, on the east side, fifty cubits.” The front is divided in Exo 27:14-16 into two כּתף, lit., shoulders, i.e., sides or side-pieces, each consisting of 15 cubits of hangings and three pillars with their sockets, and a doorway (שׁער), naturally in the middle, which was covered by a curtain (מסך) formed of the same material as the covering at the entrance to the dwelling, of 20 cubits in length, with four pillars and the same number of sockets. The pillars were therefore equidistant from one another, viz., 5 cubits apart. Their total number was 60 (not 56), which was the number required, at the distance mentioned, to surround a quadrangular space of 100 cubits long and 50 cubits broad.