Chapter 18 Site Development Plans

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Chapter 18Site Development Plans
!!!Plot Plans!!!
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Objectives

• In this chapter, you will learn to
• Identify the major elements used in site design
• Understand what a topographic map is for
• Draw contour lines and plot plans
• Understand the American coordinate system and its
  application to site plan
• Design, draw, and edit plot plans and house layout

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Site Analysis

• The first step to producing an acceptable site
  plan
• Should meet the needs of the user as well as
  protect and enhance the environment
• Considers future inhabitants

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Suitability Levels

• High suitability
• Moderate suitability
• Low suitability
• Not suitable

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High Suitability

• Many favorable conditions exist to make this area
  relatively inexpensive to develop with minimum
  amount of environmental impact.

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Moderate Suitability

• Some special design and construction measures
  will be needed to modify this land and preserve
  the environment.

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Low Suitability

• Conditions exist that place serious restrictions
  on building in this area.

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Not Suitable

• Disturbance or impact to this area will cause
  significant environmental damage or adversely
  impact the public safety and welfare.

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Zoning Ordinances

• Laws or regulations designed to provide safety
  and convenience for the public and to preserve
  and improve the environment

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Land Coverage and Setback

• Building code may restrict the percentage of
  property allowed for building space.

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What is your footprint?

• How big would your lot have to be to fit your
  house in accordance with local zoning regulations
  of only 40 land coverage
• Sq. Footage of your bottom floor 40
• (Plot Size)(.40)House Size
• House Size/(.40)Plot Size

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Setback Regulations Applied to a Corner Lot
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Setback Requirements Applied to an Irregularly
Shaped Lot
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Setback Requirements Applied to a Lot with
Accessory Structures
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Conventional Housing Development Pattern
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Cluster Housing Pattern with Limited Open Space
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Cluster Housing Development with Expanded Open
Space
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Mixed-Use Community Development
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Building Permits

• Required to ensure that sites and buildings
  conform to community standards for structural
  types, land coverage, setbacks, density zoning

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Elevations

• The height of any point on a site is dimensioned
  from a fixed elevation point called a datum.
• The universal datum elevation is sea level.

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Survey Plans

• A survey is a drawing showing the exact size and
  level of a property.
• Contour lines are laid out according to the
  elevation of the land.

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What they will look like on paper
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Drawing Contour Lines (1 of 2)

• Draw a grid or create a GRID layer.
• Label elevation at grid intersection using field
  notes.
• Determine contour interval and connect points.
• Estimate remaining lines.
• Label elevation on index contour lines and darken
  them.

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Drawing Contour Lines (2 of 2)
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American Datum System