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Roof plan architecture11/4/2023 ![]() This saves these professionals from having to draw the extra complex items on the plans in order to spend more time designing. Some drafters make their living drawing specialty plans like the roof, electrical, plumbing, and HVAC plans by hiring themselves out to designers and architects. Then finally place a arrow leader at the overhang and label it as 16″ overhang as shown in the images below and the task is complete! Place a leader on the main center line labeled peak, a leader on each side of the angled lines of the roof and label them valley, a leader on the center line of the porch roof and label it peak. Label it as Roof Plan and your Scale is 1/8″=1′-0″. Then insert the Roof Plan on your Floor Plan Sheet. Scale this image down by half using your scale command. Once traced, turn the other layers back off and change your traced lines into a hidden or broken line as shown below. ![]() Best way to do this is turn the Floor Plan layers on and trace the perimeter while still in the roof layer. Looks like a roof now, doesn’t it? The next and last step is to place the full perimeter walls in the proper location under the roof. The next step is simple! Clean it up!!! Trim the line from under the porch, fillet or trim the vertical lines on the porch so that they join the main roof and join the three lines inside the porch roof to have an image as shown below. Now draw a -45 degree line on the left side of the porch intersection and a 45 degree line on the right side of the porch intersection. With this on your screen, draw a line in the center of the porch vertically and a horizontal line in the center of the main rectangle as shown below! With the one above, the lines are 16″ beyond the perimeter. Notice the lines drawn outside the perimeter of the house. Once this drawing is completed, it can be used to draw a rafter plan showing how the roof system goes together and give us the right geometry to make sense of the roof construction.īelow is a step by step way to draw a simple roof plan using Computer Assisted Drafting (CAD):Ībove is a basic floor plan that we would use for the basis of our roof plan. Then, if the roof has more complexity to it like valleys, crickets which are little roofs that shed water from a possible water or snow trap, and any shed roofs would be drawn using the same method. You would then measure to each individual peak of the roof and draw a line representing it. A line would be drawn around the parameter of the home, and then offset the distance of the overhang. ![]() If we were using a CAD system, we would do the same thing as using a drafting board. Then projecting lines from the exterior views you can determine where one part of the roof line comes together with the other roof lines in peaks and valleys. If you are using a drafting board, it’s a simple matter of placing the completed floor plan or plans under a transparent sheet of paper, tracing the perimeter exterior walls, and then measuring beyond those walls using an architectural scale to where the overhang (fascia) of the house will be. This type of drawing is based on the floor plan and the exterior elevations of the house. Drawing a roof plan isn’t all that hard if you’ve already got a grasp of basic drafting. A roof plan is a view from the top of the house that shows the geometry in plan view of the roof. The roof plan is sometimes overlooked on some plans but it is actually a very important feature to a full set of plans. If you’ve ever looked over a set of house plans, you should find several pages containing a floor plan or plans, electrical plan, exterior views or elevations, etc.
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