Publisher The Goodheart-Willcox Co., Inc. Tinley Park, Illinois

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PowerPoint Presentation
PublisherThe Goodheart-Willcox Co., Inc.Tinley
Park, Illinois
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Chapter 10

• Plot Plans

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Chapter 10 Overview

• Introduction
• Property Lines
• Contour Lines
• Topographical Features
• Location of the Structure on the Site
• Drawing a Plot Plan Manually
• Landscape Plans
• Using CADD to Draw a Plot Plan

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Learning Objectives

• Identify the various features shown on a typical
  plot plan.
• Visualize land elevations from contour lines.
• Recognize typical topographical symbols and apply
  them to site considerations.

(continued)
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Learning Objectives

• Properly locate a building on a site.
• Draw a plot plan using correct symbols and
  conventions.
• Draw a plot plan using CADD.

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Introduction to Plot Plans

• A plot plan is a drawing that shows the site,
  location, and orientation of the buildings on the
  property.
• Uses information provided by a surveyor and
  recorded on a site plan.
• Shows several specific features related to the
  site and buildings on the property.

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Typical Site Plan
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Plot Plan Features

• Plot plans contain
• Length and bearing (direction) of each property
  line.
• Location, outline, and size of buildings on the
  site.
• Contour of the land.
• Elevation of property corners and contour lines.
• Meridian arrow (north symbol).

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Plot Plan Features

• Plot plans also show
• Trees, shrubs, streams, and gardens.
• Streets, driveways, sidewalks, and patios.
• Location of utilities.
• Easements for utilities and drainage.
• Well, septic tank, and leach field.
• Fences and retaining walls.
• Lot number or address of the site.
• Scale of the drawing.

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Property Lines

• Property lines define the site boundaries.
• Length and bearing are identified.
• Measured to 1/100 foot.
• A benchmark is shown with a symbol and represents
  a point of reference.
• The order of drawing property lines is clockwise.

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Property Line Designation

• This property line is 175.25' long and has a
  bearing of N 89 E.

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Bearings
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Benchmarks
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Drawing Property Lines
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Contour Lines

• Contour lines connect points that have the same
  elevation.
• Help describe the topography of the site by
  defining shape and elevation.
• Reference is mean sea level or a selected point.
• Contour lines are the result of a survey.
• They are plotted from a grid of elevations.

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Contour Terms and Features

• Contour interval is the vertical distance between
  two adjacent contour lines.
• Closely spaced contour lines indicate a steep
  slope.
• Contours that are smooth and parallel show that
  the ground surface is even.
• Closed contour lines represent summits and
  depressions.

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Contour Terms and Features

• Contour lines of different elevations do not
  cross.
• Contour lines cross watersheds and ridge lines at
  right angles.

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Contour Lines

• This illustration shows a five foot contour
  interval.

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Contour Lines

• The relative space of contour lines represents
  the slope angle.

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Contour Lines

• Contour lines show relative roughness of the land
  as well as the elevation.

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Contour Lines

• Summits and depressions are represented by closed
  contour lines.

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Contour Lines

• Ridges and valleys should be identified using the
  proper symbols.

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Contour Lines

• Show estimated contours with a dashed line.
  Surveyed contours are represented by solid or
  long dashed lines.

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Contour Lines

• Contour lines plotted from an elevation grid
  using data supplied by a surveyor.

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Topographical Features

• Topographical features include
• Trees, shrubs, streams, roads, utilities, fences,
  and similar features.
• These features are represented by symbols most
  are standardized.
• Nonstandard symbols should appear with an
  explanation in a legend on the drawing.

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Topographical Symbols
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Topographical Symbols

• When color is used with topographical symbols,
  follow these guidelines.
• Black is used for lettering and human-built
  works, such as roads, houses, etc.
• Brown represents all land forms such as contour
  lines.
• Blue is used for water features.
• Green is for vegetation.

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Locating the Structure on Site

• Analyze the site to determine the ideal location
  for the structure.
• Analysis should include
• Natural contour, trees, view.
• Surrounding houses, code restrictions.
• Style of house to be built.
• Solar orientation, winds.
• Placement of well and septic system.
• Size and shape of the site.

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Locating the Structure on Site

• Once the location is decided on, the structure
  can be drawn on the plot plan.
• There are three commonly accepted methods of
  representing a house on the plot plan
• Lay out exterior walls and shade area.
• Draw a typical roof plan.
• Draw exterior walls thickened.
• Dimension the location of house on site.

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Locating the Structure on Site

• First method of locating a house on a plot plan.

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Locating the Structure on Site

• Second method of locating a house on a plot plan.

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Locating the Structure on Site

• Third method of locating a house on a plot plan.

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Locating the Structure on Site

• Dimensioning a house that is not parallel to a
  lot line.

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Plot Plan Manual Drawing Procedure

• Select a scale to provide the largest drawing on
  the paper size.
• Lay out property lines. Add length and bearing of
  each property line.
• Add scale and meridian arrow.
• Select a contour interval and plot the contour
  lines lightly.
• Letter the elevation of each contour line and
  property corner.

(continued)
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Plot Plan Manual Drawing Procedure

• Property lines located and identified meridian
  arrow, scale, contour lines, and corner
  elevations shown.

(continued)
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Plot Plan Manual Drawing Procedure

• Locate the house on the site and dimension the
  overall length and width of the house.
• Dimension the distance from the house to the two
  adjacent property lines.
• Identify the elevation of a reference corner of
  the house.

(continued)
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Plot Plan Manual Drawing Procedure

• Draw surrounding features such as the driveway,
  sidewalks, and patios.
• Determine the centerline of the street and
  location of utilities using proper symbols.
• Add the well and septic system, if required.

(continued)
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Plot Plan Manual Drawing Procedure

• The house, drive, and patio are positioned on the
  site and dimensioned.

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Plot Plan Manual Drawing Procedure

• Draw other topographical features such as trees
  and shrubs.
• Darken in contour lines.
• Check your drawing to be sure that it is complete.

(continued)
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Plot Plan Manual Drawing Procedure

• The completed plot plan.

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Typical Plot Plan

• A plot plan of a large site and house with its
  own septic system and well.

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Landscape Plans

• The landscape plan is designed to show the type
  and placement of trees, shrubs, flowers, and
  pools on the site.
• Provides an excellent way to plan the total
  setting for the home.
• Uses symbols to represent plants and key them to
  a chart.
• Repeats much of the information on the plot plan.

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Landscape Plan

• Typical landscape plan.

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Landscape Plan

• Result of good planning.

(Elk Corporation)
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CADD Plot Plans

• Site plans, plot plans, and landscape plans can
  be drawn using CADD.
• General-purpose CADD can be used.
• Application specific software facilitates drawing
  plot plans.
• Compatibility is a concern when using two or more
  packages together.

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CADD Plot Plans

• This computer-generated rendering depicts the
  relationship between the structure and the site.

(Helmuth A. Geiser, Member AIBD)
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CADD Plot Plans

• Select the plotting scale for the plot plan that
  will provide the largest drawing on the size of
  paper selected.
• Lay out the property lines using proper linetypes
  and symbols.
• Show elevations.
• Use a separate layer for the property lines.
• Locate the buildings on the site.

(continued)
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CADD Plot Plans

• The property lines have been drawn and the
  structure located.

(continued)
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CADD Plot Plans

• Draw the contour lines on their own layer and add
  elevations.
• Add the house reference corner location and
  dimension the location.
• Add other house features such as roof lines.
• Show the overall dimensions of the house and
  location on site.

(continued)
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CADD Plot Plans

• The house location has been dimensioned.

(continued)
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CADD Plot Plans

• Add other topographical features such as trees,
  streams, and right-of-ways.
• Choose appropriate layers for these features.
• Include property line data and meridian arrow.
• Add the scale, title, utilities, and features
  unique to the situation.

(continued)
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CADD Plot Plans

• The completed plot plan.

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Glossary

• Benchmark.
• A permanent object used by surveyors to
  establish points of reference. If the property
  corner begins or ends on a benchmark, it is
  usually identified on the drawing with a special
  symbol.
• Contour Interval.
• The vertical distance between two adjacent
  contour lines.
• Contour Lines.
• Help describe the topography of a site by
  depicting shape and elevation of the land. A
  contour line connects points that have the same
  elevation.

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Glossary

• Landscape Plan.
• Designed to show the type and placement of
  trees, shrubs, flowers, gardens, and pools on the
  site.
• Mean Sea Level.
• A standardized elevation.
• Plot Plan.
• A plan view drawing that shows the site and
  location/orientation of the buildings on the
  property.
• Property Lines.
• Define the site boundaries. The length and
  bearing (direction) of each line must be
  identified on the plot plan.

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Glossary

• Topographical Features.
• Include trees, shrubs, streams, roads,
  utilities, fences, and similar features. These
  features are represented by symbols.