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# If the image was adjusted just a small amount its

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Unformatted text preview: adjusted to fit the paper, so it may not represent precisely the scale the designer intended to use. If the image was adjusted just a small amount, its accuracy would be in doubt. Therefore, the dimensions written on the plans should be used. Example A fire sprinkler contractor submits drawings with the branch lines marked as follows: 8´6˝ You apply your scale to verify the dimensions, and discover the sprinklers are 10 feet apart based on your scale. How do you reconcile the difference? The correct answer is 8 feet, 6 inches, because the written dimensions always take precedence over scaled measurements. In this example, you likely would obtain inaccurate scaled dimensions anywhere on the drawings when using your scale tool.  Activity answers (Note: Your answers may be slightly different from these due to margins of error among scale tools.) 1. Height = 5 feet, width = 21 feet, 6 inches 2. Height = 12 feet, width = 33 feet, 4 inches 3. Using the engineer scale tool, you must first establish which scale was selected. By rotating the scale tool until you align it with a known dimension (55 feet), you will see that the selected scale is 1 inch = 50 feet. Applying the scale tool to the outer edges of the rectangles reveals they are spaced 70 feet apart. 4. Tank No. 1 = 105 feet Tank No. 4 = 44 feet Tank No. 2 = 90 feet Tank No. 5 = 32 feet Tank No. 3 = 99 feet Tank No. 6 = 62 feet 5. 86 feet 6. 53 feet ...
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