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Here you will find links
to 6 articles: Bricking
It - Zimbabwe, Cementing Alternatives - Zimbabwe,
Fishing For Change, Holding Up The Himalayas
- Nepal, Safa Tempos Nepal, Stop The Leak
Bricking
It - Zimbabwe
The building industry in Zimbabwe is growing fast
and new brick houses are being built everywhere.
Traditional homes which are round and built using
wattle and daub (pole and dagga) are being replaced
by these brick houses. There are standard specifications
for bricks in Zimbabwe which effectively prohibit
the use of farm bricks in urban construction. The
lowest quality of brick required for general building
purposes in towns and cities is called the common
brick. Many other countries have similar standards.
Cementing
Alternatives - Zimbabwe
Lime is a versatile material produced by burning
limestone and is found in two main forms: quicklime
and hydrated lime. It has been used in numerous manufacturing
and processing industries and is an essential ingredient
of many soaps, bleachers and fertilisers. It can also
be used in building, road construction, agriculture,
water and waste treatment. Essentially, lime is simple
and cost effective to manufacture. It can be produced
to an adequate quality in sufficiently small quantities
to suit the requirements and conditions in the rural
areas of developing countries.
Fishing
For Change
A gill net is a special kind of fishing net comprising
a long length of fibre (cotton or nylon etc.) meshes.
It may be set on the sea bottom, surface or midwater
and is usually left overnight.
Holding
Up The Himalayas - Nepal
In Nepal, the road network has expanded rapidly
since the 1950s and the design, construction and
maintenance of roads needs to focus on the long and
steep slopes which are subject to erosion and very
shallow slope failure. Bioengineering can be used
to protect almost all slopes against erosion through
slope protection and stabilisation which dramatically
reduces landslides and the devastation they cause.
Safa
Tempos Nepal
The Kathmandu Valley is surrounded by hills on all
sides and because of its bowl like topography it
is very susceptible to air pollution. Increasing
urbanisation, industrial activities and automobile
traffic all contribute to air pollution in the valley.
The population of Kathmandu Valley was 577,246 in
1971 and has now increased to approximately one million.
By 2015 it is expected to rise up to levels around
1,800,000 and therefore, the population is increasing
at an annual rate of about 5.7 per cent. As the urban
population grows, it is inevitable that the number
of vehicles will increase to meet the demands of
the people.
Stop
The Leak
Life on earth has been safeguarded for thousands
of years because of a life-protecting layer in the
atmosphere. This layer, composed of ozone, acts as
a shield to protect the earth against the harmful
ultraviolet radiation from the sun. If it were to
disappear, the sun's ultraviolet radiation would
sterilise the surface of the globe, annihilating
most terrestrial life.
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