Flattening a Mesh

Support Modeling
1

I have a mesh created using proportional edit(sphere).

How do I flatten part of it so I can place buildings and the like there.

2

select them and snap their Z to zero. The old way is to use the Properties box and change the average. The new way is to use the sculpt mode. The newer way is to use the Snap tool.

3

Is the snap tool what you use via the CTRL key?

If so it doesn’t flatten the vertices in relation to the other selected ones.

How do you get to the other methods?

4

this is how i flatten stuff in edit mode i select the vertecies press s and then press z and then hit the 0 key

5

Thanks. That works.

Now how do I combine the faces that are there