Ventilation

Ventilation will be important, though I wouldn't advise windows for a structure like this. I would suggest one or more 6" to 8" PVC pipe elbows, fitted into the mesh (Elbows pointing down) at about one foot above ground level. At least one PVC roof-vent fitting should be located near the top of the dome. (The combination will allow for interior circulation via convection.) Plan vent sealing and filtering fittings according to your anticipated needs.

Also, at this time, fittings can be welded to the top of the frame to allow for later attachment of hardware of the type mentioned in the earlier attached correspondence. Also, other openings can be attached for later adjustable passive-solar heating venting, wiring, antennas, etc. … keeping in mind that every opening potentially weakens the structure and allows for intrusion of external elements. All openings should be seal-able.