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The passageways follow the grid shown.

Each triangle and each rectangle in the grid is 2:1.

Each triangle and rectangle can be reduced into infinity maintaining the ratio 2:1 so that minute measurements can be made.

Notice that the 1st, 2nd and 3rd door heights are exactly in line with the grid.

The Queen's Chamber passage is in line exactly with the grid.

The King's Chamber passage is in line exactly with the grid.

Each block of eight rectangles is 55.6861 X 55.6861 (entrance height) and each rectangle is 2:1.

The vertical height of the triangles and rectangles are 13.9215,  0.25 of the entrance height.