The Pinawa Heritage Sundial

Pinawa Heritage Sundial Conceptual Design
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Surveying the hour lines. When the pavers for the inner dial were all placed in position it was time to survey in the hour lines. Because of the gnomon's thickness (6 in.) the dial actually has two centres. These were marked on the front extension of the gnomon with a steel centre punch. Then, depending upon the hour line being positioned, Barrie would set his theodolite over the appropriate centre point.

This is one of the amazing parts. After the centre line for a rail was set two chalk lines were snapped on the pavers to accommodate the top width of the rail. Lance would then cut all these lines with a gas powered masonry cut-off saw. His accuracy in cutting these lines was fantastic. You had to be there watching this man work to truly appreciate his abilities. And yes, there was lots of dust. Cutting for the rails.

Preparing for the rail. After cutting enough pavers had to be removed so that the rail could be set in place. As the rail height was greater than the thickness of the pavers, the base had to be adjusted again along the length of each rail.

After the rail base was prepared, the rail was set into position. The forklift was used to bring the rail to the dial but Joe and Jamie moved them into position; 405 lb. for the longest one. They then replaced the pavers along the rail. This technique worked very well. Instead of having pie pieces filled with pavers, this method had the pavers carry on from section to section. The final effect was aesthetically pleasing. Setting the rail.

Curve at the north end. Here the curve is being cut at the north end of the dial. It was perfect! The curve diameter was just large enough to allow the saw to follow the line. The curve was drawn using a combination of surveying and a template. 

 

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Local Government District of Pinawa