Note 1: The street structural section shall be determined from "R" values obtained from materials gathered at the level of the proposed subgrade using the State of California Division of Highways design method for crushed aggregate base. Crushed aggregate base shall conform to section 200-2.2 of the latest edition of the Standard Specifications for Public Works Construction (Green Book). In no case shall the minimum street section be less than 3 inches asphalt concrete and 4 inches of aggregate base. If deep lift asphalt is used the minimum section shall be 7 inches of asphalt.
*** See Standard Street Sections (pages IV-30 thru IV-33)
Up to 8% with special approval of the City Engineer
Up to 14% with special approval of the City Engineer
| Street / Classification | R/W | Curb Width | R/W Cut Off | Curb Radius | TI | Section (See note 1) | Max. Grade % | Min Grade % | Min Radius Valley Min. | Design Speed |
|---|---|---|---|---|---|---|---|---|---|---|
| Major Arterials | *** | *** | 27' x 27' | 35' | 10 | 5"AC/CAB | 6** | 0.4 | 1500 | 60 |
| Secondary Arterials | *** | *** | 27' x 27' | 35' | 9 | 4"AC/CAB | 6** | 0.4 | 1000 | 60 |
| IND. / COMM. Collector | 76/84 | 64 | 27' x 27' | 35' | 9 | 4"AC/CAB | 6* | 0.4 | 600 | |
| IND. / COMM. (minor / CDS) | 66 | 46 | 27' x 27' | 35' | 9 | 4"AC/CAB | 10* | 0.4 | 300 | |
| Res Collector | 64 | 40 | 13' x 13' | 25' | 5 | 3"AC/CAB | 10* | 0.4 | 300 | |
| Res. Local | 60 | 36 | 13' x 13' | 25' | 5 | 3"AC/CAB | 10* | 0.4 | 250 | |
| Res Cul-de-sac | 58 | 34 | 13' x 13' | 25' | 4 | 3"AC/CAB | 10* | 0.4 | 250 | |
| Frontage Road | 54 | 40 | 13' x 13' | 25' | 7 | 3"AC/CAB | 10* | 0.4 | 250 | |
| Alley | 30 | 30 | 10' x 10' | 15' | 4 | 3"AC/CAB | 10* |
STREET DESIGN PARAMETERS