STREET AREAS IMPORTANT TO PERCEPTION OF THE CITY

The city's streets are a further resource to be conserved. Their value is not merely in the carrying of traffic. Streets are important in perception of the city pattern, since they make visible the city's outstanding features and its points of orientation. Streets also help regulate the organization and scale of building development, spacing out buildings and giving continuity to their facades.

Good views are another product of the street system. A majority of the city's streets may be said to have pleasing views of the Bay, the Ocean, distant hills or other parts of the city. Where good views are not available, streets can still function as open space for use by neighborhood residents and for landscaping to bring some sense of nature to the area.

Where the intensity of development is high, streets may even be necessary to maintain decent levels of light and air for residents and for pedestrians. In these areas, streets are the "breathing space" that permits buildings to reach high density on private properties. In other functions, streets also carry a complex of utility lines and provide access for truck deliveries and police and fire protection.

With this great variety of public values in the street system, it is necessary that clear policies be established to determine when streets must be retained in their present state, and when, under exceptional circumstances, street areas may be released for other uses consistent with the public interest.

WHERE STREETS ARE MOST IMPORTANT AS SOURCES OF LIGHT, AIR AND OPEN SPACE

its hope for the future. In areas that can be perfect neighborhoods, and the neighborhoods has a their personal outlook. It is of overriding importance, since the most important, just be satisfied close to a future of the city's environment may also depend on the needs, because only when in their own areas can their attention to matters be given to community.

In the course of opinion as to whether a good place to live a good life and comfortable home and a place to make up such an area described. People also consider that the neighborhoods will be more deteriorated, and the environment will be better in the planning of local government.

Outstanding concerns of neighborhood environment and safety. Traffic and automobiles moving in large volumes and产生 noise and pollutants

TWENTY-FOUR HOUR TRAFFIC FLOW ON PRINCIPAL STREETS AND HIGHWAYS

OF MEASURING BULK

PLAN DIMENSION: The greatest dimension along any wall of the measured at a height corresponding to height of other development

DIAGONAL PLAN DIMENSION: The greatest diagonal dimension between the separated points on the exterior of measured at a height corresponding to the height of other development area.

The future establishment of speakouts affecting both public and cities. For any given location, considerations indicate the approval of a height coming within the 1. The guidelines are not height not have the direct effect of restriction in the city.

GENERALIZED EXISTING BUILDING SCALE

EXISTING SCALES OF DEVELOPMENT BY AREA

SMALL SCALE:

A prevailing height of 30 to 40 feet, with most building walls ranging from 25 to 80 feet in length. Land uses are predominantly low to medium density residential and neighborhood commercial.

MEDIUM SCALE:

A prevailing height of 60 to 100 feet, with some occasional building towers exceeding 100 feet. Most building walls range from 50 to 100 feet in length. Land uses are predominantly medium to high density residential and district commercial, with some large hospitals and other institutions that tend to exceed the prevailing building sizes.

LARGE SCALE:

Prevailing heights vary by area, with the greatest height reached downtown and the least height found in industrial areas of low intensity. In areas of greatest height, most building walls range from 30 to 137 feet in length, while in areas of least height building walls have lengths ranging upward from 100 feet.

In each type of area, an appearance of excessive bulk will occur when a building exceeds both the prevailing height in the area and the prevailing range in length of building walls. As height increases, the apparent bulk produced by a given length of building walls becomes greater. Where both the length and width of a building are exceptional, the apparent bulk is greater than where the length alone exceeds the prevailing range.

the city and the effects of topographic form
in exposing building sites to widespread view.

The largest potential building sites present the greatest problems and challenges for moderation of building form. On these sites, normal controls over the form and intensity of construction that are intended primarily for smaller sites have less precision, and the external effects of large developments upon the surrounding area and upon the city may be far greater. The stakes are high for both the developers and the future of the city, with a resulting tendency toward controversy and frustration, and unfortunate divisive effects in the community. For these reasons, the larger sites require separate and more intensive consideration in policies relating to building form.

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STREET CROSS SECTION

LANDSCAPING

Buffer Planting

* Screening effect where appropriate and possible

* Trees and shrubs with close spacing

* Variation in species and size

* Include center median where street width allows

* Maximize and enhance scenic opportunities

LIGHTING

Highest Intensity

* COLOR OF LIGHT: blue-white

* LIGHT SOURCE: visible

* LIGHT STANDARDS: high, alternate spacing

Formal Design

* Minimum variation in species

* Large size trees

* Even, close spacing

* Include center median where appropriate

High Intensity

* COLOR OF LIGHT: blue-white

* LIGHT SOURCE: highly visible

* LIGHT STANDARDS: high, paired spacing or in median

Less Formal Design

* Some variation in species

* Medium to large size trees

* Even spacing

Medium Intensity

* COLOR OF LIGHT: white, color-corrected

* LIGHT SOURCE: visible

* LIGHT STANDARDS: medium high, alternate spacing

Informal Design

* Variation in species, size and spacing

* Theme trees for districts

Medium Intensity

* COLOR OF LIGHT: warm

* LIGHT SOURCE: least visible or concealed

* LIGHT STANDARDS: low, alternate spacing, pedestrian oriented

Note: Street cross sections are diagrammatic and indicate only the desired characteristics.

SPECIAL CONSIDERATIONS

●●●●● BRIDGE APPROACH LIGHTING: distinctive color

ACTIVITY AREA LIGHTING: high intensity, warm tone

Environment of San Francisco that have not provided people with a longer time, and with a crowding and stress of lives. As the city grows, it is old and irreplaceable a measure of human building of the new. It should not be replaced

such irreplaceable remain of the original and beaches that once la, and fewer still are ecology. Reduction in the city can be seen to a minimum if it is to be a nature for future

UNDEVELOPED NATURAL AREAS AND BAY FILL