Floor Plans
Lesson 2 of 13 in Blueprint & Plan Reading · 25 minutes
Read and interpret floor plan drawings including walls, doors, windows, and stairs.
What you'll learn
- Read and interpret floor plan drawings
- Understand dimension strings and room labels
- Locate electrical symbols on a floor plan
From the lesson
A floor plan is the most commonly used construction drawing. It shows the building layout from above, as if you were looking straight down. Floor plans help workers understand where walls, doors, windows, and rooms are located.
Walls are shown as parallel lines on a floor plan. Exterior walls are drawn with thicker lines than interior walls. This helps you quickly see the outside shape of the building. A door is shown as a thin line with an arc, which indicates the direction the door swings. A sliding door is shown as two overlapping rectangles.
Dimension strings run along the outside and inside of the plan. They show the measurements between walls, windows, and other features. In Canada,…