12. In front of each of the guard alcoves was a 21-inch curb. The alcoves themselves were 101/2 feet on each side.
13. Then he measured the entire width of the gateway, measuring the distance between the back walls of facing guard alcoves; this distance was 433/4 feet.
14. He measured the dividing walls all along the inside of the gateway up to the entry room of the gateway; this distance was 105 feet.
15. The full length of the gateway passage was 871/2 feet from one end to the other.