Category: Planning

9 Ways Light and Windows Affect User Experience in Buildings.

This blog is about Ways in which Light and Window design can inform your thinking if you plan to rent, remodel an existing house or build a new house. We trust this insight will help you create a better living experience that is humane and alive.

 

  1. Indoor Sunlight: It is good to check out the orientation of the building with respect to the sun. A sunny room is a happy room! If the rooms are facing south, a house will be bright, well lit and cheerful. If the wrong rooms are facing south, the house shall be dark and gloomy. To achieve a better experience, let the outdoors face southwards

Orientation with respect to the Sun Path

  1. Rooms with bay windows tend to be more beautiful because they allow more light and help the room come alive by providing an alternative sitting space for family members while maintaining their presence and psychological connection with the rest of the family members. It is like an additional interactive space that compliments a family or living room. You may also consider having a slit window if you must have a solid wall.

Bay Window & Slit Window : The Minima House

  1. Go for rooms that have an elaborate window space. This could be a window seat, a wider window board, special ledge next to the window of an alcove that is on a wall recess covered with special glasses.

  1. Biologically, human beings are phototropic. You are more comfortable in light than in darkness and you tend to gravitate towards that side. However, one can play with the light to bring varying experience e.g. as one transitions from outdoor spaces to indoor spaces. Rooms feel less claustrophobic and lively with larger windows.

 

  1. High Level Windows: Where you have wall heights exceeding 3 Metres high e.g. for rooms with double volume, consider breaking the monotony with high level windows. Staircases are potential places for this since they vertically connect floors.

High Level Windows: Gatundu House and Zuri House

  1. Ease of Cleaning: Most kitchen windows that would be next to the cooker unit would be difficult to clean because of reach and oil film. See Annals of Bad Design: Stove Window

  1. A room which has no window place, in which the windows are just “holes”, is hopeless. A window should not only let in air but also visually allow occupants/users to connect with the outside world. The “energy” should flow

 

  1. Internal Windows: Sometimes you might have walls between rooms. Adding windows helps the rooms become more alive by creating more views of people and illuminating dark corners. Fully glazed fixed windows will do.

Internal Window: Gatundu House

  1. It is hard to talk to a silhouette. If you make the windows too large, at about a distance of 4 to 5metres, the person on the opposite side will not see facial expressions. Unfortunately, this mistake will only be noticed after the fact
5 Facts about urbanization in Africa

5 Facts about Urbanization in Africa and arising Threats and Opportunities.

Rapid Urbanization:

More than half of Africa’s population will live in its cities by 2040. This translates into a population growth of more than 40,000 new urban inhabitants per day between now and 2040.

With an exception of Seychelles, 71% of urban population in sub-saharan Africa live in slums. In his 2014 World Habitat Day Speech, Seychelles Land Use and Housing minister Christian Lionnet said,

““In Seychelles, since the early years after independence, the government has adopted a pragmatic and consistent approach to housing development based on strong socialist principles. Special vigour has been put on long term programmes for appropriate solution in tackling our housing shortages.  The government has remained focus on its aim to reach a position where the laws of supply and demand come into play fairly.  Today, over thirty years down the line, Seychelles’ ultimate aim for housing is not only to facilitate access, but for every Seychellois to own his or her house.Figures from the last Population and Housing Census (2010) reveal that in 2010, 71% of families in Seychelles own the houses they are living in. This make Seychelles ranked among the top countries in the world on par with the developed nations.”

 

71% of the population in Seychelles own their homes. Over 450 million new urban dwellers are expected between 2010 and 2040, with half of Africa’s population living in urban areas by 2040. This presents various Threats and Opportunities depending on the level of preparedness of Cities.

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In Nairobi, between 1971 and 1995, the percentage of the urban population living in slums almost doubled to 60%

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Cities are Engines of Economic Growth and in that sense, must prepare to take centre stage of Rapid Urbanization. There are three main enablers to enable Cities generate economies of scale advantages. Urbanization alone is not sufficient to regenerate the Cities of Tomorrow. They also require:

 

1. Public investment in infrastructure. There is need to reform policy and legal framework for better integration of city planning and management.
2. Enterprise investment in productive capital. Enable businesses to create quality jobs for people moving into urban areas. This will enhance the ‘Working Environment.”
3. Household/private investment in housing. Strengthen institutions and systems that make cities competitive and sustainable. This will enhance the ‘Living Environment.”

 

If people have opportunities for income, work productivity, opportunity for recreation and socialization with quality housing and access to both the Work Environment and Living Environment, Urbanization is a welcome.

 

This is an opportunity for entrepreneurs and the Government. Apart from attracting productive capital, cities attract and galvanize entrepreneurs. Studies show that 80% of global economic activity is generated in cities; activities that benefit from density and proximity—of goods, people and ideas.

 

 Infrastructure Investment Lesson from China:

According to the World Bank, In 1980, the urbanization rate in East Asia was similar to that of South Asia and Sub-Saharan Africa. Between 1980 and 2010, the rate of urbanization doubled in East Asia to 50 percent, and the urban poverty rate decreased from 24.4 percent to 4.3 percent.5 By contrast, in Sub-Saharan Africa, where the urbanization rate increased from 23 percent in 1970 to 37 percent in 2011, urban poverty decreased only marginally from 41.5 percent to 33.6 percent.

 

If Rapid urbanization is well managed, it can curb urban sprawl, deteriorating access to services, greater inequality, and increased crime.

 

Boost Capital Investment:

China boosted its capital investment (including infrastructure, housing, and office buildings) from 35 percent of GDP in 1980 to 48 percent in 2011, while seeing a dramatic increase in urban population from 18 percent in 1978 to 52 percent in 2012. In contrast, capital investment in Africa has remained around 20 percent of GDP for over 40 years. China’s transformation was led by its cities, aggressively boosting investment and job creation by attracting low-skilled manufacturing industries that benefited from economies of scale and access to markets.

 

Informal or unplanned and under-serviced settlements are a common feature of many cities.In many cities, increasingly high levels of congestion, pollution, illness, disease, crime and insecurity add a huge burden to the economy through lost time and opportunity.

 

Inadequate Infrastructure is a Threat:

  1. Inadequate sanitation infrastructure in Africa’s urban areas is costing the economy around US$5.5 billion every year amounting to between 1% and 2.5% of GDP.
  2. 70 percent of Africa’s urban population lives in informal settlements and 60 percent of total urban employment is in the informal economy
  3. Countries with more than 60% of their population living in urban areas are expected to achieve 50% more MDGs on average than those with urbanization rates of 40 percent or less.
  4.  In the next 20 years, cities in the developing world will triple their built-up area (from 200,000 to 600,000 square kilometers) and double their population (from 2 to 4 billion). What will happen in Africa if we continue to under-invest in Infrastructure?

Sources: Jamal Saghir, World Bank. World Bank:“China Urbanization Study, 2013”. Economic Impacts of Poor Sanitation in Africa, Water and Sanitation Project, 2012

 

10 Practical Ideas To Lower Building Cost Without Cutting Corners

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It is always better to keep the building project within your financial expectations without compromising its integrity. This article is not about building a “cheap building” but Management of Costs irrespective of the size or budget of the project.

The beauty of managing costs is that resources are not wasted and whatever is left can be used on other aspects of the building like landscaping or enhanced security.

1.0 “Manage the project within a Construction Process”

In building a house, there is a messy process and there is the right process of doing things. The easiest way to have cost-overruns is to be dis-orderly.
Management creates order in the building process. The right process helps one to:

Control the Risks.
Control the Design.
Control the Labour Costs.
Control the Overheads.

You will have an upper hand if you have the benefit of foresight, planning and management. You require a program of works and a Method Statement for the Project. This will save you time and money.  Don’t just build as if you are cooking “fufu”.

Have a plan and a process in place before starting the building project.

2.0 “Optimize your building site”

You need to plan the house with a clear view of site conditions. Don’t “copy paste” designs from one site to another even if the user needs are the same.
Simply, cut your coat according to your cloth:

i)If you don’t have much level ground, design a house with a small footprint (ground cover).

ii)If your site is sloped, consider doing a basement instead of spending money on cut and fill.

3.0 “Story buildings are relatively cheaper”

Suppose you have a 1500 square meter house all spread out on the ground and a three story house with each floor covering 500 square meter , which one gives you more value for money?

i) Roof Cover- In our example, for the same amount of floor area you spend less on roof covering.

ii)Foundation Costs – In our example, for the same amount of floor area you spend less of foundation costs and ground preparation.

iii)Savings on land are realized by building vertically.

Clearly, stacking saves one money when building. However, this option is limited by the zoning laws and regulations of the City Council or County/Municipal Council.

4.0 “Simplify the Design”

Leornado Da Vinci is quoted as saying, “simplicity is the ultimate form of sophistication.”

Yes! Take more time in the design stage of the construction.  Be realistic and practical when drafting the Design Brief. A more complex design will cost more.

A complex roof-line with excess ridges and valleys will add to the time and cost of construction.

Let form follow function. Think about the maintenance cost of every material forming the fabric of the house.

Remember, for every building fitting or material, there is an alternative maintenance free material.  Cheap is expensive, therefore Buy Quality to minimize cost-in-use.

To reduce on the building cost, you can avoid curved rooms, curved walling and overly sophisticated designs without compromising on the aesthetics.

5.0 “Consider Open Floor Plans”

You do not necessarily need a solid wall separating the kitchen, the dining and the lounge. You can partition using half a wall. You can also opt to have an open plan between the three spaces (Lounge, Dining and Kitchen). Do a comparative cost-analysis of various options including making the lounge sunken to “define it.”

6.0 “Minimize Administrative Costs”

Have an on-site project office, a clerk of works and a store keeper to handle records as to building materials. Record management will help in minimizing waste, theft and anticipating periods for re-ordering materials or labour.

7.0 “Manage the procurement Process”

A crafty contractor may maximize profits by under-quoting on labour but offloading his profit ambition on procurement of materials.
Where do you source the materials and fittings?
Is it done competitively?
What are the alternatives?
You can save much by pre-ordering fittings and fixtures.
Have you considered imports for bulk supplies?
Consider that you can obtain a superior fitting.In case of large capital investments, one can have considerable quantity discounts by buying in bulk from the source, eliminating middlemen.

8.0 “Look at the House As An Extension of Yourself”

The best way to do this is to outline your role and key functions.  Consider multi-use spaces and utilizing and creating space that would ordinarily not be in the normal houses. You will more enthusiastic about your house only if it reflects your aspirations. It is not ab-normal to have a house without a typical lounge or bedroom. Form follows function. Most people incur unnecessary costs building a house “like that of their neighbor.” For example, if you don’t like visitors, there is no point building a guest house if you are straining your budget! Let that money go into a spacious lounge or more elegant finishes.

9.0 “Do not Ignore Insurance”

The only way to mitigate certain risks is by Insurance of the works, workers and materials. Obtain a Contractor All Risk(CAR) Policy for the duration of works. Construction insurance provides safeguards for you as an employer against your construction workers being injured on site. Construction insurance does not exempt you from maintaining a safe workplace.

10.0 “Have a Contingency Plan”

This is money set aside for “unforeseen circumstances” which may eventually sink the building project if not taken care of. Also, have in place rules t spend the contingency fund. They include things like:

i) Inclement weather.

ii) Foundation issues

iii) Cost overruns from extended preliminaries, making changes, and encountering unforeseen design problems.

iv) Inflation and adverse Market conditions

SUMMARY:

How To Lower Building Cost

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