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How to draw trapezoids?

rstevenson
Sat, 18 Apr 2020 14:45:25 GMT

I'm trying to draw an elevation view of a sloping roof, including trusses. I'm having a very hard time drawing to size what should be a simple shape, a trapezoid. I select the irregular polygon tool and draw the first long side of, say, a piece of lumber for one side of the truss. When I click to end that side and angle up at the required angle it's almost impossible to get both the lumber thickness and the angle to be correct at the same time. I get some odd amount, like 1-23/32" when I'm trying to get 1-3/4", and while I'm fussing with that (at the highest possible magnification) the angle is snapping up and down (I have the Shift key down to constrain it.) Someone must be familiar with a workable method, and I would be most grateful if they could share that method here. Or perhaps there is a file containing common structural bits and pieces I could download? That would be extremely helpful. Thanks Rob

aaron_lamb
Mon, 20 Apr 2020 11:00:37 GMT

Hi Rob, Thanks for getting in touch, I wouldnt recommend the irregular polygon tool for this, instead I would use standard lines and the extend tools. Double click to place a line at the length and angle of your first piece then work from there. If you are running MacDraft 7 you can go into the template choose (Help > Template Chooser) and look at a few examples in the architectural category. I hope this helps!

rstevenson
Sat, 25 Apr 2020 12:46:16 GMT

Thanks Aaron. I managed to get something blocked in by drawing it as close as I could manage horizontally and then setting it to the required angle using the Arrange > Rotate Options... menu. There's a lot of elements in the roof so I'll take a look at the extend tools as well.