A circular plan layout features concentric rings and centerlines intersecting at right angles. Small rectangular bracket symbols are spaced evenly around the perimeter rings. Centerlines extend beyond the outer boundary to establish alignment and positioning coordinates.
N / N \\ O'. / \ // \\ // \\ n w i\i \ \ it \ \ I n \ \ I ll I1 H H 11 \ i / / / / W / / // W // W // Os A \ / // \ /
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