* Eventually extend your ceilling

* then build (-5) Wall height from final ceiling wanted height
* build one extra ceiling @ -4 between wall (-5) & (-4)
* rise pillar from this extra ceilling with middle pillar snap to ceiling
* duplicate pillar height from bottom pillar and rise them before building other ceiling top of them

(notice it's easier to snap pillar next to each other and report height when you start with the pillar the most bottom of your finished structure)




How it look @ceilling level (adjusted pillar right of the screenshot, regular pillar height comparaison left)

Wich happen rarely, when the terrain/ground height vary a lot:


* Use 3 ceiling from an adjusted pillar (bottom middle snap & top must be empty)
* Then use two pillar to report height


* Build 2 new ceiling top to attach the new temporary pillar

(notice that the pillar attach is slighty lower than the ceiling to ceiling attach, so pay attention to attach to ceiling and not pillar this way the pillar(s) won't be even seeable like on the first screenshot with the green circle)


* then remove the temporary elements ( the middle pillar and 3bottom ceilings)


* finnaly extend the new pillar to the ground with as many additionnal pillar as necessary

Under construction