Design Standards and Improvement Specifications
Type of Concrete | Strength (pounds per square inch) | |
|---|---|---|
Class A | 5,000 | |
Class B | 4,500 | |
Class C | 4,000 | |
Class D | 3,500 |
Allowable Speed on Municipal Street (mph) | Required Sight Distance (feet) | |
|---|---|---|
25 | 150 | |
30 | 200 | |
35 | 250 | |
40 | 300 | |
45 | 350 | |
50 | 400 |
One-Way Operation | Two-Way Operation | ||||
|---|---|---|---|---|---|
Curb Line Opening (feet) | Driveway Width (feet) | Curb Line Opening (feet) | Driveway Width (feet) | ||
Commercial and industrial | 30 to 50 | 30 to 34 | 30 to 50 | 30 to 46 | |
Service station | 30 to 36 | 30 to 36 | 30 to 36 | 30 to 36 | |
Length of Site Frontage (feet) | Recommended Number of Driveways | |
|---|---|---|
100 or less | 1 | |
More than 100 to 800 | 2 | |
Over 800 | To be specified by the municipal agency upon receipt of advice of the City Engineer |
Total Parking Spaces in Parking Area | Minimum Number of Spaces to be Provided for Physically Handicapped | |
|---|---|---|
Up to 25 | 1 | |
26 to 50 | 2 | |
51 to 75 | 3 | |
76 to 100 | 4 | |
Over 100 | 4, plus 1 for each 50 spaces over 100 spaces |
Figure 9 | |||||
|---|---|---|---|---|---|
Schedule of Street Design Standards | |||||
Local Streets | Collector Streets | Arterial Highways | |||
|---|---|---|---|---|---|
Minimum curb return radius at intersection2 | 15 feet | 25 feet | 45 feet | ||
Vertical curves5 | Shall be designed in accordance with AASHTO's Police on Geometric Design of Highways and street standards. | ||||
Crest: Minimum length equals 100 inches - based on headlight illumination and stopping sight distance at design speed | |||||
Maximum superelevation | Shall be designed in accordance with AASHTO's Police on Geometric Design of Highways and street standards. | ||||
Pavement cross slope minimum | 3.00%7 | 3.33%8 | 1.50%8 | ||
Curb face required6 | 6 inches | 6 inches | 8 inches | ||
Minimum property line corner radius2 | 5 feet | 15 feet | 30 feet | ||
Normal traffic capacity (ADT) | 400 | 3,000 | 10,000 | ||
Minimum right-of-way width | 50 feet | 60 feet | 100 feet | ||
Minimum paving width: | |||||
Two-way | 30 feet | 40 feet | 60 feet | ||
One-way | 22 feet | ||||
Shoulder (or parking area width)1 | 2 at 8 feet each | ||||
Sidewalks: | |||||
Width | 4 feet | 4 feet | 4 feet | ||
Setback (from face of curb) | 3 feet | 3 feet | 7 feet | ||
Design speed (mph)3 | 40 | 50 | 55 | ||
Minimum radius of horizontal curvature at center line | 150 feet | 500 feet | 2,000 feet | ||
Minimum tangent between reverse curbs | 100 feet | 200 feet | 600 feet4 | ||
Maximum longitudinal grade | 8% | 8% | 8% | ||
Minimum longitudinal grade | 0.50% | 0.50% | 0.50% | ||
Maximum longitudinal grade for 200 feet from each side of an intersection | 3.5% | 3.00% | |||
NOTES: | ||
|---|---|---|
1 | Shoulders or parking areas as may be required. | |
2 | When dissimilar streets intersect, the larger radius will be used. | |
3 | For sight distance and vertical curve calculation only. | |
4 | As required to run superelevation (1% per sec. of travel at design speed). | |
5 | Not required if algebraic difference of intersecting grades does not exceed 1. | |
6 | Except in superelevation areas. | |
7 | Six-inch crown. | |
8 | Eight-inch crown. | |
Design Standards and Improvement Specifications
Type of Concrete | Strength (pounds per square inch) | |
|---|---|---|
Class A | 5,000 | |
Class B | 4,500 | |
Class C | 4,000 | |
Class D | 3,500 |
Allowable Speed on Municipal Street (mph) | Required Sight Distance (feet) | |
|---|---|---|
25 | 150 | |
30 | 200 | |
35 | 250 | |
40 | 300 | |
45 | 350 | |
50 | 400 |
One-Way Operation | Two-Way Operation | ||||
|---|---|---|---|---|---|
Curb Line Opening (feet) | Driveway Width (feet) | Curb Line Opening (feet) | Driveway Width (feet) | ||
Commercial and industrial | 30 to 50 | 30 to 34 | 30 to 50 | 30 to 46 | |
Service station | 30 to 36 | 30 to 36 | 30 to 36 | 30 to 36 | |
Length of Site Frontage (feet) | Recommended Number of Driveways | |
|---|---|---|
100 or less | 1 | |
More than 100 to 800 | 2 | |
Over 800 | To be specified by the municipal agency upon receipt of advice of the City Engineer |
Total Parking Spaces in Parking Area | Minimum Number of Spaces to be Provided for Physically Handicapped | |
|---|---|---|
Up to 25 | 1 | |
26 to 50 | 2 | |
51 to 75 | 3 | |
76 to 100 | 4 | |
Over 100 | 4, plus 1 for each 50 spaces over 100 spaces |
Figure 9 | |||||
|---|---|---|---|---|---|
Schedule of Street Design Standards | |||||
Local Streets | Collector Streets | Arterial Highways | |||
|---|---|---|---|---|---|
Minimum curb return radius at intersection2 | 15 feet | 25 feet | 45 feet | ||
Vertical curves5 | Shall be designed in accordance with AASHTO's Police on Geometric Design of Highways and street standards. | ||||
Crest: Minimum length equals 100 inches - based on headlight illumination and stopping sight distance at design speed | |||||
Maximum superelevation | Shall be designed in accordance with AASHTO's Police on Geometric Design of Highways and street standards. | ||||
Pavement cross slope minimum | 3.00%7 | 3.33%8 | 1.50%8 | ||
Curb face required6 | 6 inches | 6 inches | 8 inches | ||
Minimum property line corner radius2 | 5 feet | 15 feet | 30 feet | ||
Normal traffic capacity (ADT) | 400 | 3,000 | 10,000 | ||
Minimum right-of-way width | 50 feet | 60 feet | 100 feet | ||
Minimum paving width: | |||||
Two-way | 30 feet | 40 feet | 60 feet | ||
One-way | 22 feet | ||||
Shoulder (or parking area width)1 | 2 at 8 feet each | ||||
Sidewalks: | |||||
Width | 4 feet | 4 feet | 4 feet | ||
Setback (from face of curb) | 3 feet | 3 feet | 7 feet | ||
Design speed (mph)3 | 40 | 50 | 55 | ||
Minimum radius of horizontal curvature at center line | 150 feet | 500 feet | 2,000 feet | ||
Minimum tangent between reverse curbs | 100 feet | 200 feet | 600 feet4 | ||
Maximum longitudinal grade | 8% | 8% | 8% | ||
Minimum longitudinal grade | 0.50% | 0.50% | 0.50% | ||
Maximum longitudinal grade for 200 feet from each side of an intersection | 3.5% | 3.00% | |||
NOTES: | ||
|---|---|---|
1 | Shoulders or parking areas as may be required. | |
2 | When dissimilar streets intersect, the larger radius will be used. | |
3 | For sight distance and vertical curve calculation only. | |
4 | As required to run superelevation (1% per sec. of travel at design speed). | |
5 | Not required if algebraic difference of intersecting grades does not exceed 1. | |
6 | Except in superelevation areas. | |
7 | Six-inch crown. | |
8 | Eight-inch crown. | |