diagonally upwards walls

[Mosomashu]

How do you make walls going diagonally upwards like in the picture below? (Circled in red). I have also seen it next to staircases, going diagonally upwards with the stairs.
The house below (Mill House Winery and Hotel) is made by V1ND1CARE, who also made the picture. I simply pasted it into Paint and edited it by putting red on it.
I think it is something to do with constrainfloorelevation false but I don't know.

[bubbajoe62]

You have two options for warped walls. You can use Numenor's Unlevelled Walls (http://www.modthesims.info/download.php?t=59793) (no personal experience) or you can master the CFE cheat.

In a nutshell, to build an archway like the one shown in the pic, you could build it flat, enter boolprop constrainfloorelevation off and with the terrain tool, raise the ground under the arch in the desired shape. The wall will deform along with the ground. Re-enter the cheat on and flatten the ground with the level tool and the wall will retain its shape.

Walls that follow modular stairs are not so much diagonally upward as downward. The walls or fences are placed first and with CFE off, the stairs are placed between them and the walls follow the ground being warped down. That's how the decorative railing in this (http://i752.photobucket.com/albums/xx166/bubbajoe62/Chez%20Radikinz/cr10.jpg) house was produced.

In reality it takes hours and hours of practice to be able to achieve the effects and precise placement of V1nd1care's work. Search out and read building tutorials, deconstruct one of her lots or one by laivine_erunyauve @ TSR, throw down an empty lot and just build.

[Mootilda]

There's one more option: the TS2GridAdjuster. I can't see what you're trying to accomplish very clearly, but the GridAdjuster will allow you to make curved archways like this:http://thumbs2.modthesims.info/img/5/8/9/2/5/2/MTS2_Mootilda_1046925_RightSide.JPG

[Mosomashu]

Thanks!