# Measurement

Measurement GTT Unit 7 Green Architecture Green Architecture 2012 Project Lead The Way, Inc. English Measuring System Inches, Feet, Yards How many inches in a foot? How many feet in a yard? How many 1/4 inches in an inch?

How many 1/8 inches in an inch? Can you figure out the pattern? How many 1/16 inches in an inch? How many 1/32 inches in an inch? 12 inches (0-12) 3 Feet (3-0) 4 8

16 32 Locate the Ruler Mark Where is 1 3/4 inches? Where is 3 inches? Where is 4 inches? Where is 5 inches? Where is 0? Read My Line

1 1 5/8 2 3/8 2 7/8 3 4 1/8

Read My Line More Practice A = in. B = = in. C=1 = 1 in. D = 2 in. E=2 = 2 in. Architectural Units Notation

Most architectural drawings use the architectural representation displaying measurements in feet and inches Example: 16-2 means 16 feet and 2 inches Unit Conversion Sometimes we need to know a measurement in only inches or only feet (not feet and inches) Conversion factor o A ratio (fraction) that relates a measurement in one unit to the same measurement in another unit

o Example: 3 feet = 1 yard is the conversion factor The ratio of feet to yards is 3:1 Unit Conversion Desired Unit feet to inches: 1 ft = 12 in. or Given Unit

The ratio of inches to feet is 12:1 miles to feet: 1 mi = 5280 ft or 5280 ft 1 mi The ratio of feet to miles is 5280:1 Unit Conversion Conversion factor Using a conversion factor to cancel unwanted units is similar to canceling common factors when multiplying

fractions 5 7 5 = 7 3 3 Unit Conversion Example: Convert 17.2 yards to feet

17.2 yd 1 X = 3 ft = 1 yd 51.6 ft Unit Conversion Your Turn: Convert 4 feet to inches

4 ft 1 X = 12 in. = 1 ft 48 in. Unit Conversion Example: Convert 2-5 to inches

12 in. = 1 ft = 2 ft + 5 in . = 29 in . Converting to Inches Your Turn 12 1 foot = _______inches

12 in. + 8 in. = 20 1 foot 8 inches = ___________inches + 6 in. = 42 3'-6 = _______________inches + 11 in. = 191 15-11 = _________________inches = 7 21 ft = ____________ yards More Unit Conversions If 4 Blocks = 1 Inch in length What is the conversion factor for inches to blocks?

4 blocks 1 in . Desired Unit Given Unit How many blocks in 3 inches? = 12 3 inches = _______________blocks

More Unit Conversions Your Turn If 4 blocks = 1 Inch in length = 24 6 in. = __________________blocks 2 in. = __________________blocks = 10 = 19 4 in. = __________________blocks Converting Architectural Units Converting units is a valuable skill that will

help you solve many problems and avoid lots of mistakes. The process of converting feetinches to decimal feet is simple and powerful. You will use this method to calculate area and perimeter in future activities. Example: Convert = 7 ft + 0.333 ft 1 ft. = 12 in. = 7.333 ft Converting Architectural Units Your Turn Convert

= 23 ft + 0.5 ft = 23.5 ft 1 ft. = feet 12 in. Convert 16'-9 to decimal = 16 ft + 0.75 ft = 16.75 ft

Converting Architectural Units What are the dimensions of Bedroom #3? 10- 5 x 12- 5 x = 10.417 x 12.417 Convert to Decimal Feet Calculate the Area of this room 129.348 sq ft

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