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I’m in the process of constructing a 2nd observatory that will be of the roll off roof type and I’m now beginning to think of how to support the roof structure as it rolls away from the observatory on it’s timber out-runners. Something, strong and easily adjustable in height for leveling purposes.
What has come to mind are builders adjustable acrow supports. They have metal bases and heads that can be secured at the base to a concrete pad and at the head directly to the timber out-runner. The concrete pad need not be too big or deep. The height can easily be adjusted and locked. Occasional painting and creasing would maintain the supports or they could be boxed in.
I’ve found them used and on ebay for £15 or so each. I’ve actually got two in the shed which my father left me that I shall use.
Eric
Hi Erik,
Why do you need to adjust the uprights for levelling. Just use bolt down supports like these from Wicks (4″x4″) and cut them the correct length and use a long spirit level to get them true before fixing them. I have used these on a good few observatories that I have built over the years without problems.
Best of luck.
Denis
Hi Dennis,
just an alternative idea I had looking at the two supports I had in the shed.
Indeed I had thought of your suggestion also and may still go that way as I can build another structure in this otherwise dead space using these wooden up rights. Pricing Works out the same by the time timber is added. I will need at least 4.
I’d also like to motorise the roll off roof with sliding gate rack and pinion mechanism. Any recommendations for a particular unit also wheels and track system. Roof is 4.2 x 3.6 m.
Hi Dennis,
just an alternative idea I had looking at the two supports I had in the shed.
Indeed I had thought of your suggestion also and may still go that way as I can build another structure in this otherwise dead space using these wooden up rights. Pricing Works out the same by the time timber is added. I will need at least 4.
I’d also like to motorise the roll off roof with sliding gate rack and pinion mechanism. Any recommendations for a particular unit also wheels and track system. Roof is 4.2 x 3.6 m.
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