The ratio of number of residents in Souderton to the number of sex offenders is 1,661 to 1. The number of registered sex offenders compared to the number of residents in this city is smaller than the state average. Median real estate property taxes paid for housing units with mortgages in 2013: $3,817 (1.7%).
1 Guardrail system must withstand force of at least 200 lbs. applied at any point within 2 of top edge, in any outward or downward direction without failure.  When 200 lbs. is applied in a downward direction, top edge shall not deflect to a height less than 39 from walking or working level.
That means a lot of vertical pickets and a lot of weight. The gate is 16 ga steel, 2x2 on the perimeter and 3/4 x 3/4 on the rest. The vertical post will be a 4x4 or 6x6 heavy wall steel ....I thinking 5 feet out of the ground and 5 feet in the ground. So the simplest way to look at it is 200 lb at 6.5 foot out.