# Create wall/core assembly
A single of a wall or core can be created using the Sculpt > Assembly operations > Create wall/core assembly menu command. This operates on the current element or member selection.
The assembly will have spacing defined by storey so if storeys are not present GSA will ask if these should be generated.
The assembly will be aligned with the vertical (global z) axis. The bounding box for the selected entities is calculated and the x axis of the assembly is defined at the centre of this bounding box. A node is created at the bottom and top of the bounding box to define the assembly topology. An orientation node is created at a 1m offset from the bottom node.