Explain why it is important to reduce redundancy in dimensioning and how to accomplish this.
What will be an ideal response?
As you learn more about dimensioning parts, you will discover that clarity is very important and that a certain amount of economy goes a long way. The machinist is not going to be too happy if you dimension every point in every view on a drawing. He or she is expecting to see only the dimensions that are necessary to manufacture the part. Dimensions should appear only once on a drawing. In addition, each dimension should be placed in the view where the contour shape is best shown. This is known as the contour rule or contour dimensioning.
It is not necessary to give dimensions to every point in each view. Rather, each dimension should be shown only once in the view where the contour or shape for that particular dimension shows up the best. For example, if a hole shows up the best in the top view, it is best to show the size and location of the hole in that view rather than in the front view.
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What will be an ideal response?
Letter A is pointing to a _____
a. header
b. top plate
c. sill
d. double top plate