Gooday Ian, unfortunately no drawings, my design process consisted of sitting on a chair at the proposed sight with a beer and contemplating various design possibillities, having another beer, setting out string lines including line of sight from wall heights to viewable horizons, having another beer and so on .It took several of these sessions (and beers). I had several design problems with the fall of my land and the odd shape of my block. The final dimensions of the obs were 2.4 X 3.6 at the front and 3 meters at the rear.Council regs allow a garden shed without permit of 10 sq meters and I was just under it from memory.
The rolling roof is 2.4 X 2.4 the rest of the roof is stationary and as I said before the sliding roof seals water tight over the stationary part when closed. The floor is at the same height as my deck so there is no step up or down at the entrance.As mentioned previously floor is timber and standard decking style bearers and joists were employed, the lower rails of the fencing material were screwed to the top of the perimiter bearers. I guess the easiest method for you would be to look at a colorbond fence and envisage 4 panels arranged in a box shape with the uprights screwed to 4 posts 1 at each corner pretty simple , remember wall height is easily adjustable to your requirments by cutting the sheets to your desired height I used standard 1.8 meter lengths. 1 panel equals 2.4 meters long add more as req'd to suit you own design. Purlins for the roof sit directly on top of the upper fence rails an secured to the corner posts, purlins were standard 150mm X 5 meters and of course you require two extra posts to support them at the end to which the roof slides to open. Wheels were purchase through e bay for $3 each, also available at Bunnings for a bit more.
The cost of the basic enclosure was about $1000 inc posts and concrete not inc any timber(flooring and lining boards) Very competetive with a prefab shed of this size and a whole lot stronger plus its painted inside and out and color coordinated with your existing fence and adjustable to your needs size wise. Just add roof and your right to go.
Al.
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