Chapter 15Chapter 15

Site Plan Layout

Driveway style and Slope Design Considerations Minimum lawn slope of 5% for first 10’

(5/8” per foot) Minimum concrete slope of 2% (1/4” per

foot) Single-car driveway at least 10’ wide

• 12’ minimum for RV pad if you want to step on cement

• 14’ if you want to be able to walk around car

Double-car driveway at least 18’ Minimum turn radius of 15’ for a

driveway

Car & Truck Sizes

Road/ Driveway Design Curb 6” Gutter 12” Park Strip varies (4’) Sidewalk varies (4’) Approaches from Road (24”)

• Cannot encroach property line

Setbacks

Front 20’ Rear 15’ Sides 4’ Street Side 20’ Buildable Area PUE

Site Design Considerations

Do not encroach on public utility easements (property right-of-way)

Must lie inside of setback requirements set by city

Follow basic grading rules• Nothing over 2:1 Slope

Design retaining walls to minimize erosion and maintain a level lawn• Rock• Cement

How are boundary (Property lines) labeled?

Bearing and Distance The Delta angle () is the included angle of the

curve if the boundary is not straight If it is a curve the R (radius), L (length of arc),

bearing of arc center. What do we need to layout home?

Steps in Site Layout Select the proper paper size and scale (Letter)

• 1:20 for most lots up to 1/3 Acre (14,520 square feet)• 1:30 for lots up to ½ Acres (21,780 square feet)

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

cantilevers)• Include setbacks, sidewalks, and other features• Typically you can copy and rotate existing drawing from

engineer if you request it.

Steps in Site Layout Add dimensions and

elevations• Draw reference rectangle

around largest dig out possible

• Dimension to overall box to locate on lot from each corner

• Label important features Add north arrow, legal

description, title, scale, client’s name, and other pertinent information

Drawing your Site Plan

Refer to DGET 1360 Templates Open Template and save to your drive

• Has layers, text, etc. to enable you to match properties from example

• Move example to side and use match properties

• Make sure your lot is rotated to show street on the bottom and one of the property lines at 90 degrees

Use Plot Plan Layout Steps Example?