How do you build two gable roofs on one construction?

To build two gable roofs on one construction, first, ensure the main structure supports both roofs adequately. Each gable roof should be framed separately, starting with the ridge beam at the peak of each gable. Install the rafters from the ridge down to the eaves, ensuring they meet at the centerline of the building or at the appropriate intersection. Finally, cover both roofs with roofing material, ensuring proper waterproofing and ventilation between the two gables.