1) Building lay-out 2) First floor proposal 
A scale drawing which shows the exact position of the openings, wall and windows, and other details on in a stage set as seen from above. 
[n] - a floor plan for the ground level of a building
Plan of a stage on which is marked the position of the scenery in a setting,(including borders, hanging pieces and sometimes lighting equipment.
noun a floor plan for the ground level of a building