6th topic
6.2.4. Exercises with stairs
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These exercises will help you understand how stepped objects are constructed.
Watch the interactive video to learn the names of the objects.
Picture 6.18. Slopes graph
The choice of manner of transport from one horizontal surface to another depends on the angle of elevation between these surfaces. Ramps are used for small slopes, and stairs must be chosen for other slopes (Pic. 6.18).
The slope, of course, depends in part on the difference in heights of the horizontal surfaces.
Refer to the model of the folding ladder when completing this exercise.
Notice how the angle of the folding ladder is related to the graph of slopes (Pic. 6.18).
You can use the drawing of the folding ladder to check the dimensions.
This short video is about the parameters for a simple straight staircase. Answer the question at the end about the priority of stair properties.
Watch the video to see how to use the parameters when creating the stairway plan and its vertical projection. Answer the question at the end.
The stair model will provide an overview. The stair drawing with a detailed view is here!
Use the stair model for a detailed view and taking measurements. Use the images suggested in the exercise below to compose the correct assembly drawing. Pay attention to the specification codes. The ladder platform does not have a code, meaning there is no drawing for it. All the required dimensions of the platform are in the specification, so a drawing of this part of the stairs is not needed.
Stair part numbers are used for part drawing codes. 3 is the railing number, and the railing drawing code is CAD 06.03.
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