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Since buildings enclose space a important view would be the one looking down on the floor plans and walls which is called as a floor plan. It is the horizontal slice of the building with the top part removed. (Figure 4) It is the most important of all views because it shows how the building works. The size and shape of the building as well as the interior arrangement of the rooms are shown in the floor plans. Information of the location and sizes of the interior partitions, doors, windows, stairs and utility installations is also included. The floor plan is the most revealing of all drawings and constitutes the largest percentage of drawings in a set. When building has multiple floors a plan is needed for each floor unless the floors are repetitive. A plan is a two dimensional view of a space, such as a room or building. It is a view of the space from above, as if the space was cut through horizontally at the windowsill level. The upper half removed. You are looking down at the floor.
The floor plan will show the locations of walls, partitions, doors, stairs, washrooms, furniture, dimensions, etc. A floor plan is drawn to a scale with different line weights and line types to deliver different levels of information clearly. For instance, dotted/hidden lines are used to indicate the items that are located above the cutting line such as upper cabinets, upper part of stairway, openings, soffits, or other important upper part of the wall or ceiling features. Ceiling changes can be denoted with dashed lines called out for notes in a small project. Cross referencing symbols are used to relate the information on the floor plan to other drawings such as elevation, section, and detail drawings.
Plans are drawn to scale. This means that the plan is measured down proportionately to a size that will fit on a drawing sheet. A common scale is one quarter of an inch is equal to one foot (scale: ¼” = 1’-0”). The plan will be titled with the scale noted below.
Figure 4 A Typical Floor plan
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