Rising gate hinges - the theory?

[reb78]

Can anyone explain the theory behind designing offset rising gate hinges? I.e. take these measurements of the gap/gate/rise and then this is how you design the hinge so that the gate is flat and level when closed but will open up a slope?

I need to measure up properly but I need at least an 8ft gate to open up a slope and it probably needs to rise about 16 inches but be low and level when closed to keep the dog in. I see the hinges exist but cant get my head around the design.

TIA

 

[8ob]

You can achieve this with ordinary gate hinges.

Bob

 

[eddie49]

There's already been a post about gates......
Post #12 here:

Rising gates

I've been asked to make a gate the gap is 1615mm wide but as it opens in the path rises on a slope by 100 mm what type of hinges will kick that gap so I'm not left with a massive gap underneath when it's closed the gate will be made from mild steel with composite inserts

www.mig-welding.co.uk