Swing Gate or Slide Gate on a Sloped Lot

A swing gate does one job with one motion: it pivots on a hinge post and needs a clear arc in front of or behind the opening. In the Texas Hill Country around Georgetown, TX, the first measurements in the figures kept at metal gates georgetown three word wednesday are how far the drive rises across that arc and how much flat ground sits beside the opening for a slide track. Slope and space settle most of the swing or slide question before style is considered.
How much room does a swing gate need?

A single swing leaf needs a clear arc equal to its full width, and a dual swing pair needs half the opening width on each side. The arc has to be clear of cars, steps, shrubs and the street.
What does slope do to a swing gate?

Slope lifts the ground into the path of the bottom rail. A drive that rises one inch per foot across a twelve foot leaf puts the far corner a foot above the hinge height. The fixes are a rising hinge that lifts the leaf as it opens, a bottom rail set high with a gap that looks open at the closed position, or a gate that swings out and downhill.
When does a slide gate make more sense?
A slide gate makes more sense where the slope is steep, the drive is short or the leaf would swing into a road. A slide gate runs along the fence line on wheels or a cantilever frame and does not care about the grade in front of the opening. It needs a clear run beside the gate equal to the opening width plus about two feet for the counterweight tail.
What are the limits of a cantilever slide gate?
A cantilever gate hangs from rollers on posts and carries the leaf clear of the ground, which avoids a track that collects limestone grit and leaf litter. The tail of the frame is long and heavy, and it takes deep footings under the roller posts.
How does an operator change the choice?
A gate operator pushes a swing arm or drives a slide gate by chain or rack, and each type has its own space needs. An arm operator needs room behind the post for the arm to fold, and a slide operator needs a pad for the rack. Either type depends on a post and footing that do not move, which is why the footing goes in first.
What about Sun City Texas and other tight lots?
Tight lots in neighborhoods such as Sun City Texas often leave only a few feet beside the drive, and association rules may limit the style. A swing gate with a short leaf pair is common there, and a slide gate is the answer where the fence line runs straight and flat. The measurements settle it, not a preference.