Connecting Surfaces, Aligning to Ground for circular loop like structure

Hi everyone,

I’m working on a loop like structure ,I’m facing challenges with three aspects:

  1. Connecting Surfaces:

The individual surfaces of my model aren’t meeting seamlessly, creating gaps at the end points (check the below image). I’m looking for guidance on how to achieve smooth, continuous connections between these surfaces.

  1. Aligning to Ground:

Currently, I’m using the Bake and Rotate commands to position the model on the ground plane. Is there a more efficient way to directly manipulate the model to ensure it sits flat on the ground.

  1. Flattening a Surface:
    the surfaces at lower level has slope , im trying to make it align straight with ground ,how can i acheive this.please help . thank you

    loop structure (23.0 KB)