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       Chapter IV: Land Use Policies, Capital City District

Public Utilities

This is a menu of the topics on this page (click on any): PUBLIC UTILITIES    Water Supply    Sewage Disposal    Surface Water Drainage    Electricity Supply    Solid Waste Disposal    Telecommunications   .

PUBLIC UTILITIES

A description and general outline of policies for water supply, sewage disposal, surface water drainage, electricity supply, solid waste disposal and telecommunications for the new Capital is as follows:

Water Supply

The major source of water for the Capital City is the Makutapora Basin about 25 kilometres north of Dodoma. This basin provides water of excellent quality from an aquifer approximately 100m deep. It is then pumped directly into the Dodoma distribution system; consumption in 1974 was approximately 700,000 gallons per day.

Additional large-diameter boreholes are now being sunk in the Makutapora area and further investigations are being carried out. This programme should facilitate increased water production, initially from 0.7 million to 2.0 million gallons per day and subsequently to 5.0 million gallons per day. A new pumping main from Makutapora to a storage reservoir located at Mlimwa is expected to be completed within two years. The capacity of the existing treatment plant is 0.75 million gallons per day, but to fully utilize this capacity, the existing dams must be renovated. These two sources could provide 5.75 million gallons per day which is sufficient to serve a city having a population of about 190,000.

The ultimate water consumption for the Capital has been established as 50 gallons per capita per day. The fire flow requirement will be 40% of flow as required by the formula widely used in North America and considered applicable here. The future distribution system should be divided into six pressure districts so that maximum pressures of 85 pounds per square inch will be maintained during all demand conditions.

Each pressure district should be provided with elevated ground storage to equalize supply and demand over periods of varying consumption and to supply water during equipment failure or for fire demand.

All properties used for human occupancy should eventually be required to connect to the system, but during the initial stage, stand pipes will be made available to serve a group of properties.

Sewage Disposal

All areas developed for urban purposes should be served by foul sewers and all properties should eventually be required to connect thereto. However, where existing septic tanks and cess pools provide good service they could be used until such time as their replacement is necessary.

Major foul drainage design and construction is expected to commence in 1975 and will extend progressively from the north east at a low point near Mlimwa into the old town of Dodoma and then southwards beyond the railway.

The design of sewers is based on sewage flow of 40 gallons per capita per day and the variable peaking factor. The sewage flow for industrial and commercial areas is estimated from the number of employees or from equivalent population.

Surface Water Drainage

In designing any estate for residential purposes, any commercial or industrial site or any subdivision of land for urban purposes, attention should be paid to the existence of natural watercourses. Adequate provision should be made for storm drainage to ensure that no flooding will occur and insofar as is practicable all streams and creeks should be integrated into the open space system of the city.

Investigations were made into the possibilities of impounding surface water into lakes and ponds as added amenity features in both the residential and commercial areas. In addition studies should be made, and where appropriate, work should be carried out, to prevent erosion in all areas within and immediately beyond the urban limits of the city.

Within the proposed National Capital Centre and other areas of intense urban development storm sewers should be provided. In other areas surface water from roads and buildings should be handled by appropriate surface water drainage channels discharging to natural watercourses.

Electricity Supply

All urban sections of the city should be served by electricity. Within residential and industrial areas this service may be provided by overhead line, but within the government centre and commercial areas the supply should be by underground cable. Street lights should be provided in accordance with modern practice in all urban areas.

It is anticipated that a main 132,000 volt transmission line will enter the Capital City District from Morogoro in 1977. This fine must be very carefully sited to the south of the Dodoma Hills and only enter the city at the west end of the urban area. It should then terminate in the western industrial area at a new main city substation.

Solid Waste Disposal

The site for the disposal of solid waste is proposed on the west side of the Capital City, approximately 10 kilometres from old Dodoma with access from the Manyoni Road.

The sanitary landfill method of disposal is recommended initially in preference to the resource recovery methods because of its low capital investment.

The collection of solid wastes throughout the Capital City should be made twice per week, initially by open trucks; in later stages the packertype trucks can be introduced.

The collection of household wastes is recommended in paper or plastic bags. This system will stand or fall on the co-operation and good housekeeping of each and every individual in the Capital City. Therefore, education of the public in this direction should be initiated and enforced by law.

Telecommunications

The existing 400 line manual exchange telephone system will be replaced by a 500 line automatic exchange system to be further expanded to 1,000 lines.

It is recommended that a standard Intelsat earth station communication satellite installation be made at Dodoma to augment the present international communication network and improve east/west communication links. The existing space capacity of 200 lines in the two telex exchanges should be utilized before the new exchange is installed.

Comprehensive studies for each separate area of telecommunication should be initiated.



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Copyright: Project Planning Associates Limited, Toronto, Canada, directed by Mr. Macklin Hancock and recipient "The Government of Tanzania, Capital Development Authority under the auspices of Mr. George Kahama.".