Do-It-Yourself Inset Openings

There are several ways to make an opening in a Monolithic Dome. One type of opening is an augmentation. This new type of opening is an augmentation. This refers to the window and/or door extension which is built into the Monolithic Airform.

Another type of opening is designed to fit inside the line of the dome. In other words, the opening will be set back within the dome. This is an inset or cutout opening. The foam and concrete are stopped at the frames. With this type of opening, it is important to mark exactly where it will be placed. While placing rebar in the footing, omit rebar in the area of the opening.

Measuring The Opening

1. Measure first.

Measure from one side of the opening to the other (Figure 1). Divide the measurement in half to find the center point.

2. Mark Airform.

Using a level, make markings on the Airform from the center line to the desired height (Figure 2).

3. Measure from center point.

Measure from center point to edge of opening, then mark the measurement about every foot vertically until you reach your determined height (Figure 3).

4. Mark where vertical and horizontal lines meet.

At the point at which your vertical and horizontal lines meet, make a mark on the Airform (Figure 4). Then using a level, check your horizontal line.

Attaching the Bucks

Next, cut the wood into pieces short enough to fit the curve of the dome so no gaps are created. Any type of wood that is strong enough to hold the opening in place can be used (Figure 4). If wood will remain in the structure, pressure treated wood is required to avoid rotting.

5. Wood form on inside of Airform.

6. Screw small stakes to interior forms.

While one person inside the Airform pushes the piece of wood against the Airform (Figure 5) along the markings, another person on the exterior screws small stakes through the Airform into the wood (Figure 6).

7. Forms in place.

This will hold the opening in place (Figure 7).

8. Add extra support.

To complete the window bucks, add extra support to the curves by connecting interior bucks with small stakes (Figure 8).

Another Method

9. Another method - Use a frame.

Another way of making an inset opening is to make a frame to fit the opening. Using the measurements you have marked on the Airform, cut wood pieces to size of opening (Figure 9). Standing the frame up to the dome, check for level accuracy.

10. Cut plywood to fit curve of dome.

After the frame is in place, cut a piece of plywood to fit the curve of the dome (Figure 10).

To hold the opening in place, follow the same procedure of screwing stakes into the Airform from the exterior into interior window bucks.

To reinforce an opening, additional rebar is required along the perimeter of the window buck. If you have questions regarding the amount of extra rebar needed to reinforce an opening you can call MDI for further details.

Measuring The Opening

Attaching the Bucks

Another Method

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