E 000 General Provisions
E 100 Introduction and General Information
- E 110 Manual References and Sources of Information
- E 120 Definitions
- E 130 Abbreviations
- E 140 Fundamentals of Real Property for Street Design Purposes
- E 150 Legal Liability and Maintenance Responsibility
E 200 General Design of Street Improvement Projects
- E 210 Street Classifications
- E 220 Financing
- E 230 Street Improvement Policies
- E 240 Calculations and Problem Solutions
E 300 Roadway Design Controls and Criteria
- E 310 Traffic Data
- E 320 Design Vehicle Physical Characteristics and Minimum Clearances
- E 330 Speed
- E 340 Highway (Street) Capacity
- E 350 Drainage Controls and Criteria
- E 360 Other Elements Affecting Geometric Design
- E 370 Terrain and Land Development
- E 380 Intersection Grades Controlled by Street Classification
E 400 General Roadway Design Elements
- E 410 Horizontal Alignment
- E 420 Vertical Alignment
- E 430 Combination of Horizontal and Vertical Alignment
- E 440 Sight Distance
E 500 Design Criteria For Special Street Components and Projects
- E 510 Alleys
- E 520 Cul-de-Sacs and Elbow Curves
- E 530 Driveways
- E 540 Grade Separations
- E 550 Intersections At-Grade
- E 580 Private Streets
- E 590 Access Ramps (formerly E 532)
E 600 Cross-Section Elements
- E 610 Streets
- E 620 Pavements
- E 630 Curbs and Gutters
- E 640 Concrete Gutters
- E 650 Borders
- E 660 Medians
- E 670 Retaining Walls and Bulkheads
- E 680 Side Slopes
- E 690 Traffic Guides and Barrier Installations
E 700 New Project Construction
- E 710 Construction Control
- E 720 Bid Document
- E 730 Changes In Documents
- E 740 Final Inspection

E 680 Side Slopes

Side slope problems are frequently encountered on hillside developments. There are two basic types of projects. One deals with improving streets in existing rights-of-way with existing abutting improvements; the other is in undeveloped land. Occasionally a third type of special project is encountered, such as Chavez Ravine, Mulholland Drive, Kenfield Slide Area, etc.

Although the terrain and the situations differ, four main design factors are commonly involved and should always be considered:

Adequate engineering and design study
Safety
Economies
Aesthetics

When the side slopes require more than 6 feet of cut or fill, a soils report should be requested from either the Geology and Soils Engineering Section of the Street Opening and Widening Division (for City projects) or an approved soil testing laboratory (where private developments are involved). It may then be necessary to make extensive field surveys and to maintain close observation of any unstable conditions that may develop during design and construction.