chapter 13 site plan layout. 2 links for chapter 13 site design considerations steps in site layout...

Chapter 13

Site Plan Layout

2

Links for Chapter 13Site Design Considerations

Steps in Site Layout

Drawing Contour Lines

Drawing Profiles

Site Planning with CADD

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Site Design Considerations

• Minimum driveway and lawn slope of 1/4” per foot

• Single-car driveway at least 10’

• Double-car driveway at least 18’

• Minimum turn radius of 15’ for a driveway

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Site Design Considerations

MINIMUM ONECAR WITH PARKING

MINIMUMTWO CAR

TURNOUT APRONPREFERRED

SIDE GARAGE U-SHAPED DRIVEWAY

R 12'

R10'R15'

R 12'

R 20'

10' MIN

10' MIN

18' MIN 18' MIN

10' MIN

MINIMUMONE CAR

18'

17'

10' MIN

24'

10' MIN

10'-12' MIN

12'

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Site Design Considerations• Leave room for expanded utilities• Do not encroach on easements (property right-

of-way)• Follow basic grading rules• Identify remaining trees after construction• Design retaining walls to minimize erosion and

maintain a level lawn

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Property Lines

• Label boundaries with a bearing and distance

• The Delta angle () is the included angle of the curve if the boundary is not straight

A

C

L=22.78' =28Þ

L=68.92'

L=48.39'

L=68.92'

L=22.78'

R=50.00'

CENTER

L=140.09'

=28Þ =55Þ

B

=162Þ

=79Þ

=79Þ

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Steps in Site Layout

• Select the proper paper size and scale

• Lay out the site plan based on a given plat or legal description using construction lines– Draw only the outline of the floor plan

– Include setbacks, sidewalks, and other features

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Steps in Site Layout

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Steps in Site Layout

• Darken all property and other lines• Add dimensions and elevations

– Keep extension and dimension lines short– Label important features

• Add north arrow, legal description, title, scale, client’s name, and other pertinent information

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Steps in Site Layout

PROPOSED3 BEDROOM HOMEEL. MAIN FL. 101.5'

EL 101.2'EL 102'

EL 100'

EL 100'

W

S

CL

R=25.00' L=7.71'

SCALE 1"=20'

LEGAL:LOT 2 SANDY ESTATESCITY OF HOUSTON,COUNTY OF HARRIS,STATE OF TEXAS

PLOT PLAN

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Drawing Contour Lines

• Grid Survey - Divides the plot into small squares like a checkerboard

• Control Point Survey - Uses elevations recorded on a map to create the plot

• Radial Survey - A series of angular and distance measurements are established from a given central point

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Using Grid Survey

• Drive stakes into the ground in a grid pattern at a particular elevation

• Space stakes at a common interval

• Label vertical lines with letters

• Label horizontal lines with numbers (stations)

• Transpose field notes onto grid

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Drawing Contour Lines• 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 Lines0+00

0+20

0+40

0+60

0+80

1+00

A B C D E F101 100 98 95 94 92

104

108

112

102 100 97 96 93

105 102 99 98 95

110 108 105 100

105 104 102 100 95 90

102 100 95 94 92 85

98

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Drawing Profiles

• Profile is a vertical section of the ground surface and earth below

• Draw the profile line on the contour map• Establish vertical scale• Project a line vertically to elevation line from

each contour crossing of the profile line• Draw the profile by connecting the points

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Drawing Profiles

110

105

100

95

90

SCALE: 1" = 100'

PROFILELINE

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Drawing Grading Plan

• This plan shows the elevations after excavation

• It shows areas where earth is removed (cut) and added (fill)

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ANGLE OF REPOS E

LEVELEXCAVATION

ORIGINALPROFILE

CUT FILL11

CUT

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Drawing Grading Plan

• Determine the angle of repose and areas to cut and fill

• Draw parallel lines to represent elevation at the cut and fill

• Mark points where parallel lines and contour lines intersect

• Connect all points and shade cut and fill areas

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Drawing Grading Plan

FILL

104

102

106

98

FILL

96

94

EXCAVATION AT100' ELEVATION

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Site Planning with CADD

• Site plans are more accurate

• Symbols are loaded into the program for easy retrieval

• Terrain model shows contour lines in 3D

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Site Planning with CADD