Chapter 15

Site Plan Layout

Introduction• Site plans can be drawn on media ranging

in size from 8 ½" × 11" up to 34" × 44"– Depends on purpose– Many local jurisdictions recommend site plans

be drawn on an 8 ½" × 14" sheet

Introduction (cont’d.)• Before beginning site plan layout, you need

to find some important information– Often found in:

• Legal documents for the property• Surveyor’s map• Local assessor’s office• Local zoning department

Introduction (cont’d.)• Factors that influence site plans:

– Sheet size– Plot size– Amount of information required– Amount of detail required

Introduction (cont’d.)• Additional information determined before

site plans:– Legal description– North direction– Existing roads, utilities, water, sewage

disposal, drainage, and land slope– Zoning information– Size of proposed structures and elevations

Site Design Considerations• Factors to consider:

– Driveway and lawn slope– Driveway width and turning radius– Room for installations and access to utilities– Easements– Grading rules– Remaining trees– Retaining walls

Rural Residential Fire Department Access and Site Planning

• Standard guidelines:– Road clearances and load capacities– Grade– Dead ends and turnouts– Bridges and culverts– Fire safety zone and firefighter water supply– Property identification– Road coverings in wildfire zones

Laying Out Property Lines• Many plats have

property lines that curve– Radius curve– Length of curve– Delta angle

• Included angle

Laying Out Property Lines (cont’d.)

Steps in Site Planning• Steps to draw a site plan:

– Select paper size– Lay out plot plan property lines– Lay out proposed structure – Complete property lines– Add dimensions, contour lines, and elevations– Complete the plot plan

Steps in Site Planning (cont’d.)

Site Plan Drawing Checklist• Check off items on the list provided in the

text as you work on a basic site plan– Site plans for special applications may require

additional information• Grading plan• Subdivision plan• Site analysis plan• Planned unit development• Commercial plan

Drawing Contour Lines• Contour lines represent intervals of equal

elevation– Elevations at points on the ground are

recorded in field notes

• Common methods:– Grid survey– Control point survey– Radial survey

Drawing Contour Lines (cont’d.)• Grid survey

– Divides site into a pattern similar to a checkerboard

Drawing Contour Lines (cont’d.)

Drawing Profiles

Drawing Grading Plans