what is the height of hockey goal post
Field hockey pitch Goals consist of two upright posts placed equidistant from the centre of the backline, joined at the top by a horizontal crossbar. The inner edges of the posts must be 3.66 metres (4 yd) apart, and the lower edge of the crossbar must be 2.14 metres (7 ft) above the ground. The goalposts and crossbar must be white and rectangular in shape with width 50 millimetres (2 in) and a depth of 50 to 75 millimetres (2 to 3 in).
End zone Thus, in 1912, the end zone was introduced in American football. In an era when professional football was still in its early years and college football dominated the game, the resulting enlargement of the field was constrained by fact that many college teams were already playing in well-developed stadiums, complete with stands and other structures at the ends of the fields, thereby making any substantial enlargement of the field unfeasible at many schools. Eventually, a compromise was reached: 12 yards of end zone were added to each end of the field, but in return, the playing field was shortened from 110 yards to 100, resulting in the physical size of the field being only slightly longer than before. Goal posts were originally kept on the goal lines, but after they began to interfere with play, they moved back to the end lines in 1927, where they have remained in college football ever since. The National Football League moved the goal posts up to the goal line again in 1933, then back again to the end line in 1974.