Here we have plans for a simple but very cost effective and flexible truncated dome design. This design uses the minimum amount of material to cover the most growing area, it can also be expanded by nesting more domes together as your needs grow. I''ll post details of the materials required and rough costs. You can only cover this dome in polythene.
Diameter is 4.5m and I can supply drawings in metric or imperial measurements. I''m still fine tuning these plans so they will be discounted from £31 to just £18 for a limited time. As with all the plans email support is included if you need any help as you build.