Drawing a roof plan isn t a difficult task if you already have a grasp of basic drafting.
How to draw a roof line.
The other 2 lines the horizontal and vertical line are there to make an imaginary box.
This a a simple example of how to build a roof line or any other inclined plane when using two point perspective.
In this step i have drawn in some dashed lines.
Step 12 draw a line from the front vertical line to the right vanishing point.
Step 11 draw a vertical line thru the center of the x and draw the front one as high as you want the roof to be.
Now you have a roof.
Position disc on wall top before drawing.
A roof plan is a view from the top of the house that shows the geometry in flat view of a roof.
The roof plan is sometimes overlooked on some plans but it is a very important feature to a complete set of plans.
The 3d drawing also differs very slightly from the line drawings including a false hip connecting the front porch to the bedroom hip to its right and some false roofs over the unseen shed roof and how the garage roof connects to the main roof and lack of crickets.
This finishes of the roof line.
Use the following steps to draw a roof.
You can take this a step further and build multiple roof lines on.
Create a structure to put the roof on.
Draw two edges from the top of your vertical line to the corners of your roof.
Push pull back your triangular gable.
To draw something parallel to the roof line of the house the tops of windows for example draw a line from the front corner of the building to each of the two vanishing points.
If your gabled roof extends all the way to the other end of your building push pull it back that far.
The 45 degree angle lines represent the hips.
Erase the vertical edge you drew in step 3 and the guide you drew in step 2.
To finish the roof draw a line from the peak of the roof down to the top corner of the back edge of the wall.
Cursor changes to a transparent disc to gauge drawing height.
Click and drag from one corner of the wall top to the other.
This shows the correct angle for other lines parallel to the top and bottom of the building.
Odd roof types dormers.