Here they are in 2017 format.

ramp-between-2-roads-at-90-degrees 2.skp

ramp-between-2-roads-at-90-degrees 3.skp

Click in sequence on the scenes tabs of this SU file for more ideas.

Notice that Orionis98 shows a better start and finish. The real profile shall have a smooth curves at both ends of this junction road.

ramp-between-2-roads-at-90-degrees 2.skp

A better approach might be as in this file.

ramp-between-2-roads-at-90-degrees 3.skp

And the, the junction road could also have an horizontal curve so that the transitions between it and both roads are smoother than with a sharp angle.

Click in sequence on the Scenes tabs of this SU file for ideas.

Ramp between 2 roads at 90 degrees.skp

Click in sequence on the scenes tabs of this SU file for ideas.

Funnel - Rectangular to round.skp

@rv1974 said:

type s for segments number: 8s
might be your case - many shortcuts are broken in the latest su build
p.s. never saw the need in this tool - circle is universal

If you push or pull a polygon, you get a polygonal prism.

If you push or pull a circle, the longitudinal edges are smoothed so you get a cylinder.

Of course, you can soften the edges of a polygonal prism to get a cylinder or unsmooth the edges of a cylinder to get a polygonal prism but this is extra work.

For a curve you have two choices :

1 - Use the same method as what was shown for a straight edge.

2 - Explode the curve then delete unwanted segments. Of course parts of segments can be deleted if method 1 is used.

See attached image.

My SU is in French but you shall deduct the correct option.

Bonjour.

L'objet dit tout.

Voir ce lien:

Work smarter, not harder in 2022 with LayOut and SketchUp Pro

SketchUp 2022’s update gives you new design tools, new efficiencies, and a familiar but better experience. To see all SketchUp has to offer for 3D modeling in 2022, read on!

(blog.sketchup.com)

Salutations.

Show hidden geometry to reveal softened edges.

Select as much as you can with a window select.

Use the Soften/Smooth Window and then move the cursor to the leftmost position. All selected edges will be unsoftened.

Hi Blanchon, hi folks.

This is what I get with SU 2021. I saved it as SU 2017 format.

Chaise.skp

Hi Mike, hi folks.

That's a good one.

I have never worked on such a roof, neither on any roof as I am a mechanical engineer specialized in piping.

My experience with SketchUp (SU) dates back from more that 15 years when SU was at version 3.0 and I always enjoy trying to solve geometric challenges.

I would guess so, and the same for the smaller circle too.

I just played around and got to create this SU file. Click in sequence on the Scenes tabs.

Reciprocal roof.skp

The base circle of the truncated cone at the axes origin is not horizontal.

Is this on purpose ?

Can you post the file ?

See this SU file for ideas. I used a square but it is the same with a rectangle.

Square to circle transition.skp

Hi Chris, hi folks.

What do you intend to use for banding ?

Can you post a picture or is it like shown with dry vegetal fibres (bamboo ?).

Hi Chris, hi folks.

See this SU file for ideas.

Pipe support choices.skp

Hi folks.

After you have purged your file, save it as a template so the next time you start SketchUp, you will have a very lean file.

The number of segments can be correct but, if the radius of the curve is very small, each of the segments length may be below the lower limit accepted by SketchUp.