A year ago (2020) I built a 8x8 split-roof observatory (2020 build) with roof sub-panels moving in north and south directions on sliders attached to 4x4’s beams sitting on top of east and west walls. My original pre-planning had been for conventional ROR with roof on gantry moving to west (inverted v-track rails and v-groove wheels). The permit review requirements (circumstances) made me opt to keep under 64 sq-ft (final footprint was 63+) and I built option with split-roof design to satisfy my backyard imaging.
My experience with split-roof design was ‘acceptable’ but in this subsequent year the south sub-panel movement has developed ‘interference’ from a crepe myrtle on side of my observatory. In past 18-months it has grown 4-ft and now has finally blossomed after proper arborist care. Wife gets compliments from neighbors on foliage so I was doomed when I approached wife about ‘trimming’ the sucker to free up my roof’s motion. I ‘countered’ with proposal that I modify roof to ROR on gantry going to west. This puts low concrete piers/posts at locations in wife’s bushes but gantry rails (over 6’) easily clear the 4’ high shrubs (already at max height/growth). The wife was agreeable and ‘negotiations’ were complete. Town considerations were satisfied when described as attached garden ‘pergola’ on side of my ‘shed’. I chose to avoid mention of ‘functionality’ (ROR) in brief narrative and there were no complicating questions to answer.
Would I have been contemplating design retrofit for technical reasons? No. To improve my horizon viewing experience? Not my first method since raising pier height would be easier approach under my circumstances. I had mid-30’s degree horizon views with existing walls and pier height arrangement. My parked height (OTA in horizontal) was at 60-61” and mid-roof height was at low 80”s. So additional 16-18” space is available if I wanted to increase pier height via short pier extension (or add concrete height at base) to ‘peek’ over walls. I have lower surrounding landscape to E/SE/S which increases 0-5-10-15 degrees as move clockwise. The rest of the ‘compass sweep’ is at 25-35 degrees due to surrounding houses/trees.
The picture below shows the final day (Aug 3) with original split roof where the crepe myrtle’s presence against end of south roof is visible at edge.
Edited by Travellingbears, 22 August 2021 - 11:10 AM.