Using splines to draw the profile of corrugate metal roofing

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Using splines to draw the profile of corrugate metal roofing

Postby nigelblake » Wed Sep 26, 2012 6:04 pm

I am using QCAD 3.0 to design a simple outbuilding with a corrugated metal roof. I think one of the spline tools would be the best way to draw the profile of the corrugated roofing material. Here are the dimensions: 76.2 mm is the horizontal distance between the peak of each corrugation. The vertical distance from the trough to the peak is 19mm; the width of each sheet is 1104.9mm. The profile has a simple sinusoidal character. Can you suggest the best way I might do this? Thanks in advance for your help.
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Re: Using splines to draw the profile of corrugate metal roo

Postby Husky » Wed Sep 26, 2012 9:38 pm

Just a different thought of doing this is:

Working with Circles and Tangents ...
roof 1.png
roof 1.png (3.92 KiB) Viewed 3040 times

Break out, trim and delete what you don't need ...
roof 2.png
roof 2.png (2.6 KiB) Viewed 3040 times

Move/Copy until you reach your estimated length ...
roof 3.png
roof 3.png (2.52 KiB) Viewed 3040 times
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Re: Using splines to draw the profile of corrugate metal roo

Postby nigelblake » Wed Sep 26, 2012 9:51 pm

Thanks Clive and Husky for your quick and very helpful response. I am using QCAD 3.0 the full edition and finding it an impressive tool. Your responses help show how flexible it is. Much appreciated Nigel
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