For long term outdoor installations, what are people using for the ground/conduit interface for longevity? I'm thinking a plug at the end of shrink wrapped conduit is probably the go to for vertical conduit into the ground? The platform I'm building will have up to 400 lbs on it, so I'm thinking I'll put some shrink wrapped horizontal conduit on the ground for the verticals to meet with a T connector. I just thought I'd check what other people are doing where the pipe meets the dirt. Thanks!