For mounting the window in the PVC construction one method that i sketched and detailed was one where the PVC pipe would have a strip cut on the inner side of one of the triangle sections of the dome. The cut would be used to mount a material (most likely acrylic) in the slot. This cut can be seen in detail 01. The Window would then be secured in place with screws through the pipe which will hold the window in place. Further more, the entire dome would be sealed in a heat shrink wrap, which, when heated will shrink and fit to the form of the dome. The screws used to secure the window in place would also be used to secure the heat wrap in place for a starting point for the wrap to fold around the dome, eventually being screwed again on the opposite side of the window section of the dome. This can be seen in detail 02.
Also after the window and wrap are in place, a rubber seal and silicon would be used to further water proof the window joints.




















 DETAIL 01                                                                                                                           DETAIL 02