CE 303: Introduction to Construction

1
CE 303 Introduction to Construction

• Blueprint Lab

2
Dimensioning
1 - 8
8 -
4
3
Objectives

• Dimension Lines
• Reading Drawing Scales
• Architectural
• Engineering
• Stationing
• Line-types and Placement
• Introduction to Quantity Takeoffs

4
Drawing Scale

• construction projects are drawn to a reduced
  scale
• scale is defined as
• architectural scale
• 1/4 1-0 this means every 1/4 on the drawing
  equals a one foot of actual length on the project
• 1/8 1-0
• engineering scale
• 1 10, or 20 etc.
• metric scale
• 150

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Reading Scales
architectural scale
2
1 inch
4
1 inch
2
2 inches
2 inches
16
6
Reading Scales
architectural scale
20-6
7
Reading Scales
architectural scale
2 - 8½
8
Reading Scales
3-8
architectural scale
5 5/8
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Reading Scales
engineering scale
10
Reading Scales
metric scale
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Stationing

• Dimensioning of an alignment in 100 foot
  intervals.
• Each 100 ft. is denoted as 100
• 100 100, 200 200, etc..
• Known as full stations
• Intermediate stations are between full stations
  and are known as plus stations.
• 147 147, 357.24 357.24, etc

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Line-types Placement

• Dimension and Extension Lines.
• Marking device placed at end of dimension line
• Arrows, dot, tick
• Extension lines are drawn perpendicular to
  dimension line to specify features between which
  the dimension applies.

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Dimension Lines
15
Quantity Takeoffs

• Quantities derived from drawings
• Square footage, linear footage, cubic footage
• List of all materials
• Requires understanding of geometry (calculations
  from straight lines, curves, angles...)
• Accurate quantity takeoffs are required for
  detailed cost estimates.
• Can include labor and equipment costs

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