Building

To construct buildings, you must have either a crude hammer or refined hammer in your inventory. There appears to be no difference in the materials used to create your buildings; it is all based on the cosmetic look you want you base to have. It is unknown what purpose buildings actually serve, aside from protection from sunburn and sunstroke.

Roofs
To place a roof it is required to have a wall to attach it to. While you may walk on roofs, you cannot place supports on them, so they cannot be used to create multiple floors. instead the player must use floors.

Walls
A wall is a structural piece in crafting a shelter. This will allow your home to be more enclosed, effectively protecting you from the elements. You must have supports on either side and a foundation underneath to place them on your shelter. Note that the foundation is part of the recipe for a wall, so if you already placed a foundation you must do your crafting at the foundation worksite.

Steps
Steps are used to create walkways used to board foundations or floors on another story. They can be made out of many materials.

Door Arches
These are required to place doors. Place the arch first, then you can place the door. With the exception of the container door, which is the arch and the door in one.

Doors
A door is a structural piece in crafting a shelter. This will allow your home to be more enclosed, effectively protecting you from the elements. You must have supports on either side and a foundation underneath to place them on your shelter. Note that the foundation is part of the recipe for a door, so if you already placed a foundation you must do your crafting at the foundation worksite. Left mouse click on door to open.

Structure Table
This table can help organize what you are after based on type and material: