> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/hb-energy-primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ladybug.tools/hb-energy-primer/components/0_basicproperties/ground_construction_subset.md).

# Ground Construction Subset

![](https://459479801-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9N5K8lMbAhbyBVgms%2Fuploads%2Fgit-blob-041eb7295bcc0e35d2e402e45e2a07576f672644%2FGround_Construction_Subset.png?alt=media)

![](https://459479801-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9N5K8lMbAhbyBVgms%2Fuploads%2Fgit-blob-6466b02cd9ffeeadb096dc7c11abaa68d76df012%2FGround_Construction_Subset.png?alt=media) - [\[source code\]](https://github.com/ladybug-tools/honeybee-grasshopper-energy/blob/master/honeybee_grasshopper_energy/src//HB%20Ground%20Construction%20Subset.py)

Create a list of ground constructions that can be used to edit or create a ConstructionSet object.

## Inputs

* **ground\_wall**

  A construction object for underground walls (or text for the identifier of the construction within the library). 
* **ground\_roof**

  A construction object for underground roofs (or text for the identifier of the construction within the library). 
* **ground\_floor**

  A construction object for ground-contact floors (or text for the identifier of the construction within the library). 

## Outputs

* **ground\_set**

  A list of ground constructions that can be used to edit or create a ConstructionSet object.