Friday, 19 April 2019

Floating ecopolis in hindi


Sunday, 14 April 2019

Floating ecopolis or Lilypad

It is also known as the name of lilypad (the highly ribbed leaf of Victoria water lilies). Ecopolis means small city and this concept has come for climate change refugees. As we know global sea levels predicted to rise significantly over the next century due to climate change, a lot of people living in low lying areas are expected to be displaced from their homes. Vincent Callebaut is a Belgian ecological architect propose this concept. It is completely self-sufficient floating city that would accommodate up to 50,000 people.


Design concept
It is designed as a  double skin of the floating “ecopolis” it means it will be made up of two part one part is below the water and the other one is above the water surface. the lower portion which is immersed in the water located on the center which will be worked as an artificial lagoon.



The upper portion will be constructed on three marinas and three mountains as you can see the picture.



the whole structure will be constructed of polyester fibers which are covered by a layer of titanium dioxide (TiO2), which would react with ultraviolet rays and absorb atmospheric pollution via a photocatalytic effect in the same way as the air-purifying concrete. TiO2 has low toxicity, less resistance, and less corrosion and has semiconductor properties. 

Amenities
It is an amphibious city without any roads and cars and the whole city is covered by plants housed in a suspended garden. A lilypad will float around the world as an independent and fully self-sustainable home. It has a lagoon at its center for soft water collection and purification of rainwater and this artificial lagoon is also entirely immersed, thus ballasting the city. It enables to live in the heart of the subaquatic depths. The multifunctional programming is based on three marinas and three mountains dedicated respectively to work, shops, and entertainment. The whole set is covered by a stratum of planted housing in suspended gardens and crossed by a network of streets and alleyways with an organic outline.
Energy
By only using renewable energies, this design has zero carbon emission and it produces more energy than it consumes.
Energy sources could include:
  • Biomass
  • Osmotic power
  • Phytopurification                                
  • Solar thermal
  • Solar photovoltaic
  • Tidal power
  • Wind energy





Challenges
Entirely auto-sufficient, Lilypad takes up the four main challenges launched by the OECD (Organization for Economic Cooperation and Development) in March 2008 – climate, biodiversity, water, and health. It reached a positive energy balance with zero carbon emission by the integration of all the renewable energies (solar, thermal and photovoltaic energies, wind energy, hydraulic, tidal power station, osmotic energies, phytopurification, biomass) producing thus more energy than it consumes! A true biotope entirely recyclable, this floating Ecopolis tends towards positive eco-accountancy in oceanic ecosystems by producing and softening itself oxygen and electricity, by recycling the CO2and waste, by purifying and softening biologically used water and by integrating ecological niches, aquaculture fields and biotic corridors on and under its body to meet its own food needs. This means that it will be eco-friendly and will run on renewable energy. It will only float and move about with the currents and movement of the seas themselves. Neither the cost of the building the city nor the cost of living there has been revealed.
To reply to the mutation of the migratory flows coming from hydroclimatic factors. The Lilypad joins on the mode of anticipation particular to Jules Verne’s literature, the alternative possibility of a multicultural floating Ecopolis whose metabolism would be in perfect symbiosis with the cycles of nature. It will be one of the major challenges of the 21st Century to create an international convention inventing new means to accommodate environmental migrants by recognizing their rights and obligations. Political and social challenges apart urban sustainable development must, more than ever, enter in resonance with human sustainable development .

Why is it important?
The international scientific scene assets that a temperature elevation of 1°C will lead to water rising of 1 meter.
If the first meter is not very funny with more than 50 million of people affected in the developing countries, the situation is worse with the second one. Countries like Vietnam, Egypt, Bangladesh, Guyana or Bahamas will see their most inhabited places swamped at each flood and their most fertile fields devastated by the invasion of salt water damaging the local ecosystems. New York, Mumbai, Kolkata, Hô Chi Minh City, Shanghai, Miami, Lagos, Abidjan, Djakarta, Alexandria… not less than 250 million of climatic refugees and 9% of the GDP threatened if we do not build protections related to such a threat. It is the demonstration inflicted to reluctant spirits by a climatological study of the OECD (Organization for Economic Cooperation and Development) and that challenges the imagination of eco-conception .







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Thursday, 11 April 2019

Why orientation is important for building

Before discussing the importance of orientation of building let's understand what orientation is?
orientation gives us information about the direction and position with respect to any point and space. In other words, we can say that it analyzes the relative position.

 

In the building, orientation plays an important role during the functional design. It tells us placing of building in such a way that it gets the maximum advantages of the natural source for maximum possible comfort.
Artificial things or devices can create comfortable conditions inside the building but the cost is a major consideration and these comforts keep us away from natural comfort. that's why we do not use natural resources in the correct way like
use of natural wind direction
use of solar energy
use of rainfall
We continuously use mechanical devices for comfort in building hence we have faced many problems like
Increase in temperature
Humidity
pollution
stress or tension
health
We can get rid of all these things in the building if we design the building in a proper orientation.
what measures should we take while designing the building?





Temperature:
All Building has a vertical surface and roof that is continuously bear the sunlight rays. we have a lot of methods which can minimize the heat which comes from the sun's rays.
If a place where summer causes greater thermal discomfort then the building as a whole should be oriented to intercept minimum solar radiation in summer and vice-versa. If the only summer has been considered that what about winter because it is not possible to increase the incident solar radiation on a surface during winter, therefore, it is always possible to reduce it in summer by the use of standing devices like landscape i.e., plants shade overhang, louvers, verandahs, etc. In the afternoon the air gets a higher temperature, therefore, the western wall needs special consideration like the use of different material ( which should not absorb more heat) or place such functional area which commonly may not be used during this period like law, stone, garage, etc. or even the forms itself may provide maximum shading on the various surface.
the surface of the building should be in such a way that it reflects the heat of mean radiant temperature.









Humidity:
The humidity of the atmosphere has an important role to increase or decrease the direct and mean radiation temperature on the building. since the human body also give up the humidity to the atmosphere, nearly 50 grams per hour in rest condition. if humidity is more in the atmosphere will create a more uncomfortable condition. in such conditions, humidity can be controlled only by the mechanical device.

Air movement:
Air movement is responsible to create comfortable for uncomfortable conditions for the men.
in the summer, air will help to reduce the temperature and provide fresh air to men. air movement does not allow the stagnation of uncomfortable air

Site conditions:
to understand the geographical condition and surroundings of the sire, the value of the latitude and position of the north is necessary. the surrounding may help in the case of mean radiation temperature and direction of air.




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Monday, 8 April 2019

Why fish plate is important in rail




  1. It is used in rail joints to maintain the continuity of the rail.
  2. It allows expansion and contraction of the rail which happens due to the temperature variations
  3. It holds the ends of the rail both laterally in line and vertically in level
  4. It is arranged as it bears the stress due to lateral and vertical bending moments without getting distorted
  5. It absorbs the shock caused by the jumping of the wheel over the expansion gap.
  6. It allows a free moment of rail for expansion and contraction so that the web of the rail can't touch each other


Sunday, 7 April 2019

A SUCCESSFUL TOWN PLANNING

It is all about the arrangement of various components or units of a town in such a way that the town as such attains the significance of living species or organisms. when we talk about town planning then we have been talking about urban planning. Town planning demands active imagination and a sharp common sense of the understanding of various needs of the society.
A town would be successful only when people living in it get comfort and the secrete of the town have following features that make it successful:
 


Economy 

Development and innovation have frequently been linked to rapid sustainable economic growth. Recent unprecedented globalization and technological advancements have made understanding this relationship more important than ever. Indeed, innovation occurs through a complex process embedded in individual and collective human knowledge, experience, and space, leading some to advocate the importance of fostering the social capital and creative capacity of local urban environments.


Defense

Defense plays a very virtual role in the success of the town. It saves our resources, people, culture, and infrastructures
Historically many cities were destroyed in the warlike Afghanistan, Syria, etc. many of them have been rebuilt that's another aspect but we have to focus on why they are destroyed the main reason is a defense that makes unsuccessful so the proper planning of defense is also making town successful. 

Society

Civil society plays a very important role in Building awareness to create political wills Increasing community awareness Contributing to enhancing the resilience of the most vulnerable poor population Collaborative action to develop and implementation of the project to widen coverage and sustain impacts. So people who live in the town are a very important unit of the town to make them successful.


Politics

A good political system is to keep the very important Administrative system that helps people and the growth of the town and it also takes a good decision in economy and defense. We have seen how politics directly influence the economy and defense of the town. Behind the success of the town, there is always a good leader