Drawing An Ionic Volute
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Drawing an Ionic Volute - a decorative element typical of Classic architecture. The Ionic volute is representative of a spiral with three turns, restrained within a 7:6 rectangle. It is formed by drawing a series of quarter-circles (quadrants) which run neatly one into the other, ending in a full circle termed the Cathetus (eye) of the volute. This method is transferable to practically any size of full-scale building unit.
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Drawing An Ionic Volute
- 1. Drawing an Ionic Volute _ Stonemasonry technical skills at SkillsTech Australia Adapted from Spooner H.J. : 'Geometrical Drawing' pp167-169
- 4. Proportions of rectangles 7 . 5 m m 7 . 5 m m 7.5mm 1 5 m m 1 5 m m 15mm 3 0 m m 3 0 m m 30mm x Unit = Length of side Ratio 37.5mm 5 45mm 6 52.5mm 7 (75+52.5)mm/2 = 63.75mm 75mm 5 90mm 6 105mm 7 (150+105)mm/2 = 127.5mm 150mm 5 180mm 6 210mm 7
- 5. Step 2: Draw a rectangle 210mm high and 180mm wide All lines are construction lines!
- 6. Step 3: Draw a horizontal line at 150mm height
- 7. Step 4: Draw the second rectangle
- 8. Step 5: Draw a horizontal line at 75mm height
- 9. Step 6: Draw the third rectangle
- 10. Step 7: Draw a horizontal line at 37.5mm height
- 11. Step 8: Draw 45 0 lines from corners to form a square
- 12. Step 9: Find centre of each side of the square and project vertical and horizontal lines
- 13. Step 10: The squares tell where the quadrants will go
- 14. Step 11: Draw quadrants to form the first turn of the spiral
- 15. Step 12: Clean up construction lines
- 16. Step 13: Locate the second rectangle
- 17. Step 14: Draw 45 0 lines from the corners
- 18. Step 15: Find centre of each side of the square and project vertical and horizontal lines
- 19. Step 16: The squares tell where the quadrants will go
- 20. Step 17: Draw quadrants to form the second turn of the spiral
- 21. Step 18: Clean up construction lines
- 22. Step 19: Locate the third rectangle
- 23. Step 20: Draw 45 0 lines from the corners
- 24. Step 21: Find centre of each side of the square and project vertical and horizontal lines
- 25. Step 22: The squares tell where the quadrants will go
- 26. Step 23: Draw quadrants to form the third turn of the spiral
- 27. Step 24: Continue the final quadrant to form the Cathetus (volute ‘eye’)
- 28. Step 25: Clean up all construction lines and outline the spiral