This garden armillary rock feature was designed to mount a polished stainless steel armillary sphere which would be the focal point for the front garden at the Wollemia Urology Centre in North Gosford. A selection of natural rocks were sorted by size and colour, prior to construction, and fitted together according to their unique size and shape. When the basic shape was achieved the rocks were concreted into position.
A stainless steel support armature was made and aligned into a central hole in the garden armillary rock feature with a plywood frame. Stainless steel was chosen to eliminate the corrosion problems within the concrete over time. The hole was filled with concrete fixing the frame in position.
Next, the stainless steel frame was clad in rocks which were cemented in position until the centre plinth was created. The only rock cutting required for the whole feature was at the very top where the armillary was going to attach.
The inside of the garden armillary rock feature was filled with concrete to give it additional stability and also to give a solid base for some decorative white pebbles which would cover the area inside the base. The concrete will also eliminate any weeds growing up through the pebbles. A small hole at the front allows any accumulated water to drain away to the garden.
The polished steel armillary sphere was then bolted into position on the top of the plinth. Details of the armillary sphere can be found here.