# Building floors on empty Z tiles?
**URL:** https://discourse.cataclysmdda.org/t/building-floors-on-empty-z-tiles/23169
**Category:** The Bunker
**Created:** [April 7, 2020, 9:00am UTC](https://discourse.cataclysmdda.org/t/building-floors-on-empty-z-tiles/23169 "2020-04-07T09:00:23Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@ErdinyoBarboza](https://discourse.cataclysmdda.org/u/ErdinyoBarboza)
#### Post date: [April 7, 2020, 9:00am UTC](https://discourse.cataclysmdda.org/t/building-floors-on-empty-z-tiles/23169/1 "2020-04-07T09:00:23Z")
I was wondering if there is a way to build floors etc on the empty Z tiles such as to be able to create bridges around apartments, build a base on a silo etc?
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### Author:  [@Belcanzor](https://discourse.cataclysmdda.org/u/Belcanzor)
#### Post date: [April 7, 2020, 9:35am UTC](https://discourse.cataclysmdda.org/t/building-floors-on-empty-z-tiles/23169/2 "2020-04-07T09:35:47Z")
Good question.
Have you tried the “build” menu? The one called with \*
I think you can build more the more skill you have. I m sure I see “bridge” in some menu.
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### Author:  [@ErdinyoBarboza](https://discourse.cataclysmdda.org/u/ErdinyoBarboza)
#### Post date: [April 7, 2020, 9:42am UTC](https://discourse.cataclysmdda.org/t/building-floors-on-empty-z-tiles/23169/3 "2020-04-07T09:42:01Z")
Bridges require water to be below them it seems.
I think there is no buildable floor that can be put at _empty_ tiles
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### Author:  [@Tamior](https://discourse.cataclysmdda.org/u/Tamior)
#### Post date: [April 7, 2020, 11:48am UTC](https://discourse.cataclysmdda.org/t/building-floors-on-empty-z-tiles/23169/4 "2020-04-07T11:48:08Z")
Try building a roof one level lower, maybe?
P.S. Just checked: building a roof works for creating a floor one Z level higher.
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### Author:  [@CallMeJefe](https://discourse.cataclysmdda.org/u/CallMeJefe)
#### Post date: [July 2, 2020, 5:51am UTC](https://discourse.cataclysmdda.org/t/building-floors-on-empty-z-tiles/23169/5 "2020-07-02T05:51:18Z")
Alternatively, vehicle construction that starts on a roof can extend onto empty Z tiles. This works best for short temporary bridges. When exploring in urban environments, I usually carry a folded vehicle that consists of 5 foldable-light frames in a row, and unfold it to bridge gaps. Unless you install aisles, it will ask you to confirm each step you take, and it’s no good for hauling things over.