Top Three Takeaways
sun897585115
Week2.3-TapeMeasureScaleReading.pdf
CMGT 2300-4320
Architectural Planning & Design Management
Reading Measuring Tools and Using Scales
Fractional Rule
• Major divisions:
– Feet
– Inches
– Fractions:
– 1/2 = 2 per inch
– 1/4 = 4 per inch
– 1/8 = 8 per inch
– 1/16 = 16 per inch (usually the smallest
division needed)
Fractional Rule (Cont.)
inch mark
(6")
½" mark
(8½")
¼" mark
(11¼") ⅛" mark
(7⅞")
1/16" mark
(101/16")
foot mark
(12" or 1')
• Take 5 minutes to complete the measurements in
Activity 3-1 in the textbook.
Reading a Fractional Rule
Drawing Scale
• Construction projects drawn to a reduced scale
• Common scale types used:
• Architect’s Scale – 1/4 = 1-0
– Every 1/4" on a drawing equals 1 foot of actual
length on the project
– 1/8 = 1 -0 or 1 = 1 -0
• Engineer’s Scale – A 10 scale means that every 1 on a drawing equals
10 in reality
• Metric Scale – 1:50 scale
Scale Relationship
Architect’s Scale
Architect’s Scale (Cont.)
• Identify the smallest tick marks
2
1/2 1
1/8
Architect’s Scale (Cont.)
• Identify the smallest tick marks
1/4 1/2
1 2
Reading an Architect’s Scale
1 = 2
1 = 4 2 = 2
2 = 16
Reading an Architect’s Scale (Cont.)
2-4
20-6
Reading an Architect’s Scale (Cont.)
2-8 1/2
• Take 5 minutes to complete the scale
measurements in Activity 3-3 in the textbook.
Reading an Architect’s Scale
Engineer’s Scale
• Scales:
– 1 = 10 (may also be 100, 1000, etc.)
– 1 = 20
– 1 = 30
– 1 = 40
– 1 = 50
– 1 = 60
Reading an Engineer’s Scale
1 = 50
Reading a Metric Scale
10 m
2 m
How to Scale a Line
• The scale is 1 1/2 = 1
– Line up the closest foot mark that still allows the line
to trail into the fractional foot area
2-10
210
How to Scale a Line (Cont.)
• Scale is 1/2 = 1
8-6
8 6
Finding Dimensions
• Find the missing dimension
• Solution:
5-6 + 3-1 = 8-7
24-3 = 23-15 8-7 = 15-8
24-3
3-15-6
• Take 10 minutes to find the missing dimensions in
Activity 3-4 in the textbook.
Finding Dimensions (Cont.)
• Take 30 to 40 minutes to complete
• Activity 3-5 in the textbook.
Activity 3-5
