Civil Drafting Technology - 7th Edition

Chapter 3 - Map Scales

Chapter Test

Part I

Fill in the blanks below with the responses necessary to complete each statement. Highlight the underscore and type your answer.

3-1 A______is a representation of a portion of the earth’s surface reduced to a small size.

3-2 The proportion between the length of a line on a map and the corresponding length on the earth’s surface is called the ______.

3-3 A scale used to approximate distances on a map, which usually looks like a small ruler found near the legend or title block, is called the ______.

3-4 Representative fraction = RF = ______/ ______.

3-5 A scale that is used for rough estimates of distances on a map is called the ______.

Part II

Make the following scale conversions. Show your calculations in space provided.

3-1  Convert RF = 1 : 100,000 to a graphic scale.

3-2  Convert RF = 1 : 2000 to a graphic scale

3-3 Convert a verbal scale of 1 in. = 1 mi to a representative fraction.

3-4 Convert a verbal scale of 1 in. = 100 mi to RF.

3-5 If the number of inches of 1 degree of latitude on a map is measured to be 4.75 in., what is the RF of the map?

Part III

Use a civil engineer’s scale to measure each line shown in your textbook. The scale calibration is identified to the left of each line. Highlight the underscore and type your answer.

SCALE ANSWER

3-1 1 in. = 10 ft. ______

3-2 1 in. = 20 ft ______

3-3 1 in. = 30 ft ______

3-4 1 in. = 40 ft. ______

3-5 1 in. = 50 ft. ______

3-6 1 in. = 60 ft. ______

3-7 1 in. = 2 ft. ______

3-8 1 in. = 100 ft. ______

Part IV

Answer the following questions using short complete statements related to CAD applications.

3-1  Give an example of what it means to create CAD drawings using real world coordinates.

3-2  Usually, scaling of a CAD drawing is done when the drawing is ready to be plotted or printed. Discuss and give an example of this application.

3-3  Identify at least two benefits of creating drawings at full scale using CAD, and give an example.

3-4  Show the formula and calculate the scale factor for a civil engineering scale of 1” = 50 ft.

3-5  Calculate the actual text height to be used in the CAD system. If the desired plotted text height is 1/8 in. and the scale is 1 in = 50 ft.

3-6 Given a 1 in. = 10 ft. civil engineering scale, identify the scale factor, and drawing limits for a C size (22 X 17) sheet.

Chapter 03 test 1