String of boxes.

String of boxes

A line of electrical boxes with spacers to push each box into a position flush with the finished shotcrete. That conduit sticking out to the right intersects with a future conventional wall constructed into the extended augment. Note how boxes are covered with tape to preserve their integrity until the shell is complete.

Image by Javier Figueroa via Monolithic Commons

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How to Install Electrical Wiring in a Monolithic Dome