Wednesday 17 September 2014

kwame nkrumah presidential library


Image by Mario Cucinella

all information from: http://www.mcarchitects.it/project/kwame-nkrumah-presidential-library-1
                    http://aasarchitecture.com/2014/05/kwame-nkrumah-presidential-library-mario-cucinella-architects.html


Description

The Kwame Nkrumah Presidential Library was born from the dream of Samia Nkrumah, the daughter of a political leader Kwame Nkrumah who led Ghana to independence in 1957, and is now leading the political movement of the father Convention people’s party.

Image by Mario Cucinella

The design of the library, developed in collaboration with the same Samia Nkrumah, is a cultural project that promotes a model of sustainable development capable of dealing with the environmental issues and able to engage the local population through the accessibility of the educational service, the cultural offer and the comparison with the new technologies. The library is designed as a large square of knowledge: a tool for catalyst engine privileged society and social innovation.


Image by Mario Cucinella



The building is in fact organized as a mixed functional program that addresses the issue of education as a whole: they provide spaces for reading and consultation but also spaces of encounter and confrontation. There are spaces for events and conferences, workshops and activities of co-working. Workshops for the music, the visual arts and crafts. The library will become part of the network of the Ghanaian education system ranks as one key tool for the training of new generations.
Kwame Nkrumah Presidential Library
Image by Mario Cucinella

In Ghana, 83% of the population does not have Internet in schools and not all students are able to have access to books. For this reason, the involvement of young people must become a fundamental element of any cultural project as a guarantee of social inclusion. It will be possible to accept graduates for internships and educational activities for children. In addition, the library will offer the opportunity to train new professionals in the field of culture and education.

Kwame Nkrumah Presidential Library
Image by Mario Cucinella



The project site

You choose to locate the project at Akosombo, near Lake Volta, the largest artificial lake in the world, with approximately 8502 km ² of surface area and 148 cubic kilometers of water stored : one of the most important water reserves of the globe. In particular, the dam of Lake Volta, sponsored by the Kwame Nkrumah, produces electricity for most of Ghana and plays a vital role for the local industry. More than 2 million people live near the lake, the source of drinking water and fishing site.

Kwame Nkrumah Presidential Library
Image by Mario Cucinella

Functional description of components

The library is a building of 4600m2 arranged on six levels. It consists of circular -plan floors arranged around a large central void, designed according to a flexible scheme that allows the organization mobile and diverse interior spaces. A system of ramps and walkways is the vertical distribution within the building. Through the curtain system maintains the perception continues in all directions of the surrounding landscape.
Kwame Nkrumah Presidential Library
Image by Mario Cucinella

At the entrance level is the reception and children’s area. This is immediately connected to the first floor which houses space for laboratories and workshops, as well as areas for exhibitions of art and architecture and space dedicated to art of how to do, where there will be a 3D lab. The upper floors of the library are allocated for consultation and reading rooms; Here is a space dedicated to Kwame Nkruma hosting thematic texts and his personal archive.
Kwame Nkrumah Presidential Library
Image by Mario Cucinella

The last level is a large panoramic floor that houses the restaurant business and leisure. In the basement is added to a 300-seat auditorium for conferences and events and has a second separate entrance so you can operate independently of the library.

Kwame Nkrumah Presidential Library
Image by Mario Cucinella


Environmental benefits and sustainable technologies

The Kwame Nkrumah’s Presidential Library is a bioclimatic building able to maintain high levels of thermal comfort, visual and audible throughout the year thanks to the balance of a few elements: shape, materials and simple technologies. We use sustainable materials, promoting the use of local and renewable materials, such as wood.
Kwame Nkrumah Presidential Library
Image by Mario Cucinella

In particular, will be used for building fine wood recovered from Lake Volta. Are expected photovoltaic panels in coverage for the production of electricity in order to enhance the weather conditions of the site. Installations for the recovery of rainwater guarantee saving environmental resources. The protection against solar radiation occurs encouraging natural ventilation and shading generated by the large cantilevered floors and reflecting glasses that heat build-up. The green will represent an important source of cooling.
Kwame Nkrumah Presidential Library
Image by Mario Cucinella

Facts

Location: Akosombo, Volta Lake, Ghana
Project Team: Mario Cucinella, Luca Sandri, Emanuele Dionigi, Monica Luppi, Michele Olivieri, Pietro Marziali, Gabriele Motta, Giulia Pentella, Yuri Costantini (model), Ambra Cicognani (model)
Rendering: Cristian Chierici CC 79; Engram Studio
Surface: 4600m2
Year: 2013 – ongoing



Kwame Nkrumah Presidential Library
Image by Mario Cucinella

Kwame Nkrumah Presidential Library
Image by Mario Cucinella


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Thursday 4 September 2014

great glass house

Image by Foster + Partners

all information from http://www.fosterandpartners.com/projects/great-glass-house/


Description


Set in rolling hills overlooking the Tywi Valley in Carmarthenshire, the Great Glasshouse forms the centrepiece of the 230-hectare National Botanic Garden of Wales. The largest single-span glasshouse in the world, containing more than a thousand Mediterranean plant species, it reinvents the glasshouse for the twenty-first century, offering a model for sustainable development.

Image by Foster + Parners

Elliptical in plan the building swells from the ground like a glassy hillock, echoing the undulations of the surrounding landscape. The aluminium glazing system and its tubular-steel supporting structure are designed to minimise materials and maximise light transmission. The toroidal roof measures 99 by 55 metres, and rests on twenty-four arches, which spring from a concrete ring beam and rise to 15 metres at the apex of the dome.

Image by Foster + Partners

Because the roof curves in two directions, only the central arches rise perpendicular to the base, the outer arches leaning inwards at progressively steep angles. The building's concrete substructure is banked to the north to provide protection from cold northerly winds and is concealed by a covering of turf so that the three entrances appear to be cut discreetly into the hillside. Within this base are a public concourse, a café, educational spaces and service installations.

Image by Foster + Partners

To optimise energy usage, conditions inside and outside are monitored by a computer-controlled system. This adjusts the supply of heat and opens glazing panels in the roof to achieve desired levels of temperature, humidity and air movement.

Image by Foster + Partners

The principal heat source is a biomass boiler, located in the park's Energy Centre, which burns timber trimmings. This method is remarkably clean when compared with fossil fuels, and because the plants absorb as much carbon dioxide during their lifetime as they release during combustion, the carbon cycle is broadly neutral. Rainwater collected from the roof supplies 'grey water' for irrigation and flushing lavatories while waste from the lavatories is treated in reed beds before release into a watercourse.

Image by Foster + Partners


Facts

Appointment: 1995 
Completion: 2000 
Area: 5 800m²
Height: 14 m
Capacity: 40

Image by Foster + Partners


Client: National Botanic Garden of Wales 

Structural Engineer: Anthony Hunt Associates 
Quantity Surveyor: Symonds Ltd 
M+E Engineer: Max Fordham & Partners 

Additional Consultants: Gustafson Porter, Colvin and Moggridge 

Image by Foster + Partners


Awards

The Dewy-Prys Thomas Prize - Great Glass House,
D&AD Silver Award for Environmental Design & Architecture
H & V News Awards – Environmental Initiative of the Year Awarded to the
Civic Trust Award
The 2000 Leisure Property Awards
The Concrete Society Building Award (for outstanding merit in the use of concrete)
RICS (Royal Institute of Chartered Surveyors) Building Efficiency Award for
Architecture in Wales Eisteddfod - Winner of Gold Medal in Architecture ( Alwyn Lloyd Memorial Medal)
RIBA Architecture Award
Structural Steel Awards
BIAT Open Award for Technical Excellence

Image by Foster + Partners


Features

The building's internal environment and the weather outside are monitored by a computer-controlled system, which adjusts the supply of heat and opens 4 x1.5 m glazing panels in the roof to achieve desired levels of temperature, humidity and air movement.

Image by Foster + Partners


Wednesday 20 August 2014

vitro house

image by Luis de Garrido


all information from http://www.archilovers.com/p43874/Vitrohouse-Eco-House#info

Facts

VITROHOUSE ECO-HOUSE
2005
ANAVIF. Construmat 2005
Barcelona
126 m2
€ 138,000

image by Luis de Garrido


Description

1. Most Important Goals

- Build a habitable dwelling, entirely made of glass, as the only material, including the supporting structure. The idea is to show the untapped possibilities-glass-construction. Hence, all elements are glass housing (including columns, beams, decks, fireplaces, floors, walls, furniture, appliances, bathrooms, decorative ...).

- Experience with glass as a structural material. The ultimate goal is to define a technical standard, and a process of structural design and dimensions, base only, glass elements.

- Designing a home with the highest possible degree of sustainability, despite the difficulty of using mostly glass building. The intention is to invite reflection on all the features you must have a building to be 100% sustainable. 

- Ask a virtual home, multimedia, equipped with the latest advances in control technology, telecommunications, air conditioning and lighting. The aim is to experiment with light, sound, multimedia projections and glass, so that transcend physical spaces in virtual spaces, and the matter is diluted into light and sound.

- Achieving a self-sufficient housing, constructed of standard elements of flat glass.

- To design all the furniture, health and housing supplements, based solely on flat glass. Of course, these elements must be fully functional and ergonomic.

- Design a removable housing that can be built in protected natural environments, and is perfectly integrated into the environment.

image by Luis de Garrido


2. Architectural Solution

The prototype includes the construction of the house (126 m2) as its outer urban areas (314 m2).

The house is divided into three zones:

- A core set of 42 m2, for work activities in the home. This is the area where heat is generated in winter (greenhouse double skin of glass and solar control glass cover) and cool in summer (by air from the wind sensor).

- Two lateral bodies of 42 m2 each. A body hosts the sleeping area (bedrooms and bathrooms) and the other the living area (living room and kitchen).

image by Luis de Garrido


3. Sustainable Analysis

1. Resource Optimization

Maximum degree of recyclability
Glass is easily recyclable material, and requires very little energy to it. The recyclability of a material means little regard to their sustainability, as the vast majority of materials are recyclable. What is really true is that a material is recyclable using very little energy and resources. For example, aluminum can be recycled, but the energy required is very high, much higher even than the collection of almost any other material.

Ato degree of naturalness
Glass is a material that is generated naturally in nature, and requires relatively little energy to be produced from abundant materials and through a simple process. Thus the degree of naturalness is high.

Abundance
The Glass is very heavy and will remain, as the raw material for manufacturing, silica, is one of the most abundant of nature.

Reuse
The prototype has been designed with prefabricated elements so that, after dismantling, can be reused for anything else. The glass pieces are designed with little variety of sizes, so you can exchange your position, and are easily repairable. He has designed an ingenious structural system, so that the windows do not even need to be bored, so it is easier to reuse later. Only used a simple hardware-faint-gravity to hold the glass. The hardware is capable of holding all the parts without holes or lines, ensuring resistance to vertical and horizontal loads to bear argo of life. This hardware is perhaps the greatest achievement of the prototype.

No toxicity
The glass has no toxic component at all that can alter human health and the planet. Adhesives have been chosen just as well as silkscreen paintings used.

High durability
The durability of the glass is extraordinarily high. There are no comprehensive data that can last a tempered glass or laminated glass, but suitably treated, is the most durable materials.
Similarly, the prototype is designed so that, taken together, can have an infinite life cycle and natural environments. To do this, we designed a structural system and construction in which all parts can be replaced at any time for another of equal or better features, at the time they stopped being useful. Just as different parts are easily replaceable. No holes, no hardware to replace parts just have to loosen it and remove it.

image by Luis de Garrido


2. Waste and Emissions Reduction

In the manufacture of materials
For the manufacture of glass does not generate any waste, as the remaining scraps are recycled continuously. Similarly, virtually no environmental emissions.

In building the prototype
No waste of any kind generated in the assembly of the prototype. The pieces have been cut with pinpoint accuracy, and have used them all. Most materials have been served on site without packaging, and the few existing packages have been designed to carry elements of the house back to the factory, once you remove the prototype.

In the life of the building
There is no residue and no emissions during the life of the prototype. Keep in mind that the prototype has been designed to have an infinite lifetime, ie an infinite life cycle.

In the dismantling
The prototype has been designed so as not to generate almost no waste in its dismantling. Applying heat with a wire will remove the few adhesives used (inert nature and biodegradable). The remaining materials will remain intact and ready to be reused as many times as necessary.

image by Luis de Garrido


3. Energy Reduction

Obtaining materials
Energy consumption for obtaining the glass is half (aprox.17 mJ / kg.) Compared to other materials. Materials such as concrete, ceramic or stone with less power consumption. In contrast, the production of other materials such as steel, aluminum, plastics, paints, varnishes or isolates implies a much higher energy consumption. In addition, the parts designed for the prototype have little dimensional variation and repeated, therefore, the energy cost needed is minimal.

Construction
We used only pieces of flat glass (laminated and tempered), so that the number of pieces as small as possible, has the fewest number of different pieces and parts are placed as quickly as possible (and with the least amount possible labor and auxiliary machinery).

Dismantling
The dismantling is very simple and consumes very little power. You only need to remove the adhesive with a wire and pick up one by one each piece of glass (which need not broken or damaged).

Transportation of material and labor
The materials and labor have been local. There has been no need for skilled labor.

Life
Despite being built solely of glass, the prototype has an adequate thermal performance. Of course the fact that we chose glass as the only material-a priori implies severe restrictions on energy efficiency of the prototype (eg, decks and glass walls would inevitably generate a significant warming of summer days building at same time involving a low thermal insulation). However, they have used a set of bioclimatic strategies that have offset these deficiencies and have allowed a proper thermal performance and high energy efficiency.
The prototype has a zero energy consumption of non-renewable. The prototype generates hot water (via solar thermal sensors), electricity (via solar photovoltaic sensors and wind turbines), heat (greenhouse effect), and cool (by geothermal architectural devices).

4. Improved health and well-being

All materials used are environmentally friendly and healthy and have no emissions that can affect human health. Similarly, the building is naturally ventilated, and maximizing natural light, creating a healthy environment and provides the best possible quality of life for its occupants.

5. Reduced price of the building and maintenance

The prototype maintenance costs are very low. The only short-term maintenance is cleaning, because the transparent nature of glass and semi-transparent. However, treatment of the glass and the design of each component part has been done to minimize this section. To reduce the degree of breakage or damage, given the fragility of glass, are suitably designed supports and elastic joints of the structure. As maintenance personnel of the prototype was not necessary

5. Bioclimatic characteristics

For the prototype design have been carefully chosen a set of architectural strategies that have resulted in a bioclimatic architectural style perfectly.

image by Luis de Garrido
image by Luis de Garrido


1. Orientation.
The orientation of the prototype has been made to the south, in order to ensure both the greatest number of hours of sunlight, as solar control architectural possibility (without control technologies or other artifacts).

2. Tripartite typology.
We have chosen a tripartite typology, so that both the area day and night area are geared towards the central body (covered patio). Precisely this is the central body that ensures cool in summer and heat generation in winter. In winter, close the glazing elements of the double skin of glass, making the central space in a huge greenhouse, which heats the other rooms of the prototype.

1. Solar control.
Sunscreens on the south side preventing sun rays from entering in summer but allow winter coming. In the sleeping area of ​​the prototype has been installed a double skin of glass with a shutter on the inside that allows you to control the passage of sunlight into the building. In contrast, in the day, the solar control system chosen has been the willingness of a set of horizontal slats stained glass (the darker the better) with dimensions that allow the sun passes in winter, but not in summer.
In summer the outside folds of the double skin, which allows, along with sunscreens, the sun's rays do not enter the glass from the inside. This prevents overheating of the prototype.
The sloping roof panel has on its inner face a special film of sunscreen, so that filters out a good amount of light passing through glass. This will minimize the heat gains in summer, while increasing thermal insulation in winter.

4. Air Cooling System
The cooler air is absorbed northern winds by the captor, cool shade under the floor inside the prototype and is distributed by the false floors. But for those days when you can not cool the air by architectural means, the wind sensor has a built-in mechanical and thermal conditioning ecological,. The chosen system is energy efficient, generating ionization, oxygenation and bactericide. Fresh air to circulate through the entire house inside out has an ingenious system of natural convection "chimney effect".

5. Isolation.
The wall insulation has been achieved by incorporating a double skin of glass. This is achieved by a ventilated chamber can even be filled with insulating material to ensure proper insulation. On the other side for the insulation of roofs have followed two different strategies. A deck is covered with natural soil with vegetation, which guarantees the shading of the prototype, its isolation and thermal inertia. The other cover is filled with water, which is stored underneath the house cool summer nights (in a buried tank) and is pumped into the deck during the day, allowing the interior refresh.

6. Thermal inertia.
The house has a large thermal inertia that allows the generated cool summer nights continue throughout the next day. On the other hand, the heat produced by the greenhouse effect (and others) during the winter days, is conserved throughout the night. The high thermal mass has been achieved due to the large mass of glass panels, and the large mass of water and land included in the covers of the housing.

7. Renewable energy.
As sources of energy has turned to solar energy (thermal and photovoltaic) and wind energy. Solar thermal energy is used for hot water, while solar photovoltaic and wind power for electricity consumption of the prototype. In a real case, the electricity generated would be sold directly to power supply companies, so that energy efficiency is multiplied almost fourfold due to the difference in price between energy sold and to purchase (system network connection). It should be noted the new system for photovoltaic generation of electricity: double laminated glass panels that make photovoltaic cells. This will reduce costs and ensure the correct inclination of the photovoltaic cells (about 30 degrees in our latitude) to be effective.


image by Luis de Garrido


5. Highlights Innovations

- Construction of glass. The prototype shows the potential of glass as a structural material in construction, but also to provide sustainable, decorative and insulating ... He has experimented with all kinds of glass and constructive solutions to achieve a sturdy, stable, adequate heat and 100% functional.

- Land cover and aquarium. To increase the thermal inertia, there are two types of coverage: a garden of water and other circadian cycles. On the cover of water, has provided an aquarium, while providing a show for the home users.

- Integration of alternative energies. They have integrated seamlessly into the architecture of the house alternative energy devices like solar thermal and photovoltaic sensors and wind generators. Laminated glass panels of the central pitched roof including photovoltaic cells.

- Ecological mechanical conditioning system. Environmental conditioning equipment installed has a bactericide, and ionization of oxygen and a heat exchanger.

- Multimedia technology. A set of video projectors, robots projectors, speakers and synthesizers seamlessly integrated and coordinated with the home automation control system can produce a multimedia show continued in all the architectural elements of the house. Architectural spaces are defined at all times by the lighting and multimedia information, and continuously change according to environmental conditions (temperature, humidity, noise, number of people ...). Even the privacy and functionality of the different living spaces can be changed by changing only the level of lighting in each room.

- Flexible structure. To respond to changing needs, spaces are easily renewable, thanks to the kitchen and bathroom are relocatable, electrical, water and sewer flexible, soils recordable media ethereal spaces and mobile toilets and a new functionality.

- Lighting option. The lighting of the house was made with an intelligent low-energy lighting by LEDs. Among many other innovations, have been used transparent glass walls lit with LEDs inside, and new materials backlit, halfway between the ceramics and glass.

- Furniture and sanitary glass. Both furniture and the bathrooms are made with flat glass postemplado. They have a unique aesthetic, play with light effects and are perfectly integrated into the architecture.

- Building system that lets you build a house in 5 weeks.

image by Luis de Garrido

Wednesday 16 July 2014

EDITT tower

images by T.R. Hamzah & Yeang


                                  http://istephany.wikispaces.com/Final_Project


Description


Design Features 

Our design sets out to demonstrate an ecological approach to tower design. Besides meeting the Client’s program requirements for an exposition tower (i.e. for retail, exhibition spaces, auditorium uses, etc.), the design has the following ecological responses:


Response to the Site’s Ecology

Ecological design starts with looking at the site’s ecosystem and its properties. Any design that do not take these aspects of the site into consideration is essentially not an ecological approach.

A useful start is to look at the site in relation to an “hierachy of ecosystems” (see below):

Ecosystem
Hierarchy
Site Data
Requirements
Design
Strategy
Ecologically-MatureComplete Ecosystem
Analysis and Mapping
Preserve
Conserve
Develop only on no-impact
areas
Ecologically-ImmatureComplete Ecosystem
Analysis and Mapping
Preserve
Conserve
Develop only on least-
impact areas
Ecologically-SimplifiedComplete Ecosystem
Analysis and Mapping
Preserve
Conserve
Increase biodiversity
Develop only on low-
impact areas
Mixed-ArtificialPartial Ecosystem
Analysis and Mapping
Increase biodiversity
Develop on low-impact
areas
MonoculturePartial Ecosystem
Analysis and Mapping
Increase biodiversity
Develop in areas of non-
productive potential
Rehabilitate ecosystem
ZerocultureMapping of remaining
ecosystem components
(e.g. hydrology, remaining
trees, etc.)
Increase biodiversity and
organic mass
Rehabilitate ecosystem

From this hierachy, it is evident that this site is an urban “zero culture” site and is essentially a devastated ecosystem with little of its original top soil, flora and fauna remaining. The design approach is to re-habilitate this with organic mass to enable ecological succession to take place and to balance the existent inorganicness of this urban site.

The unique design feature of this scheme is in the well-planted facades and vegetated-terraces which have green areas that approximate the gross useable-areas (i.e. GFA @ 6,033 sq.m.) of the rest of the building.

The vegetation areas are designed to be continous and to ramp upwards from the ground plane to the uppermost floor in a linked landscaped ramp. The design’s planted-areas constitute 3,841 sq.m. which is @ ratio 1 : 0.5 of gross useable area to gross vegetated area.

Design began with the mapping in detail of the indigenous planting within a 1 mile radius vicinity of the site to identify species to be incorporated in the design that will not compete with the indigenous species of the locality.

images by T.R. Hamzah & Yeang

   
Place Making

A crucial urban design issue in skyscraper design is poor spatial continuity between street-level activities with those spaces at the upper-floors of the city’s high-rise towers. This is due to the physical compartmentation of floors (inherent in the skyscraper typology).

Urban design involves ‘place making’. In creating ‘vertical places’, our design brings ‘street-life’ to the building’s upper-parts through wide landscaped-ramps upwards from street-level. Ramps are lined with street-activities: (stalls, shops, cafes, performance spaces, viewing-decks etc.), up to first 6 floors.

Ramps create a continuous spatial flow from public to less public, as a “vertical extension of the street” thereby eliminating the problematic stratification of floors inherent in all tall buildings typology. High-level bridge-linkages are added to connect to neighbouring buildings for greater urban-connectivity.

images by T.R. Hamzah & Yeang
 

Views to the Surrounding

A “views analysis” was carried out to enable upper-floor design to have views of surroundings.
 

“Loose-Fit” 

Generally, buildings have life-spans of 100-150 years and change usages over-time. The design here is ‘loose-fit’ to facilitate future reuse. Features include: 

‘Skycourts’ (i.e. convertable for future office use)
Removable partitions
Removable floors
“Mechanical-jointing” of materials (as against to chemical bonding) to facilitate future recovery.
Flexible design (e.g. initially a multi-use expo building, its future use may be offices [nett lettable area of 9,288 sq.m. @ 75% efficiency] or apartments).
   
A set of plans to show conversion to office use has also been prepared @ 75% net to gross floor efficiency.
   

Vertical Landscaping

Vegetation from street-level spirals upwards as a continuous ecosystem facilitating species migration, engendering a more diverse ecosystem and greater ecosystem stability and to facilitate ambient cooling of the facades.

As mentioned earlier, species are selected not to compete with others within surroundings. “Vegetation percentages” represent of area’s landscape character. Factors influencing planting selection are:

Planting depths
Light Quality
Maintenance level
Access
Orientation
Wind-walls / solar-panels / special glazing
   
Vegetation placements within the tower at different heights respond to the microclimates of each individual sub-zone at the tower.

Image by Isni Parra

   
Water-Recycling 

Water self-sufficiency (by rainwater-collection and grey-water reuse) in the tower is at 55.1%:

Total gross area = 6,032 sq.m.
Water requirements = 20 gallons/day/10 sq.m. gross area + 10% wastage
Total requirements = (6,032 ÷ 10 x 110%) x 20 gallons= 13,270 per gallon/day = 60.3 m3 per day x 365 days  = 22,019 m3 annum
Total rain-fall catchment area = 518 sq.m.
Singapore average rainfall / annum = 23.439m
Total rain-water collection = 12,141 m3 per annum
Water self sufficiency = 12,141 ÷ 22,019 x 100 = 55.1%

Image by Isni Parra
   

Water-Purification 

Rainwater-collection system comprises of ‘roof-catchment-pan’ and layers of ‘scallops’ located at the building’s facade to catch rain-water running off its sides. Water flows through gravity-fed water-purification system, using soil-bed filters.

The filtered-water accumulates in a basement storage-tank, and is pumped to the upper-level storage-tank for reuse (e.g. for plant-irrigation and toilet-flushing). Mains water is only here for potable needs.


Sewage Recycling

The design optimises recovery and recycling of sewage waste:

Estimated sludge = 230/P.E. / day @ 3. P.E. per 100 m2 GFA
Building GFA = 6,032 sq.m.
Sewage sludge collected/day = 230 litres x 6,032 ÷ 100 x 3= 41,620.8 litres or 41.62 m3/day = 15,190 m3/ annum
   
Sewage is treated to create compost (fertilizer for use elsewhere) or bio-gas fuel.
   

Solar Energy Use

Photovoltaics are used for greater energy self-sufficiency.

Average photovoltaic-cell energy output = c. 0.17 kWh sq.m.
Total sunlight hours per day = 12 hours
Daily energy output = 0.17 x 12 = 2.04 kWh sq.m.
Area of photovoltaic = 855.25 sq.m.
Total daily energy output = 1,744 kWh
Estimated energy consumption @ 0.097 kWh /sq.m. enclosed & 0.038 kWh/sq.m. unenclosed  = (0.097 x 3,567 sq.m.) + (0.038 x 2,465 sq.m.) = 439.7 kWh
Estimated daily energy consumption = 10 hrs x 439.7  = 4,397 kWh
% self sufficiency is 1,744 ÷ 4,397 = 39.7%
   

Building Materials Recycling and Reuse 

Design has an in-built waste-management system. Recycleable materials are separated at source by hoppers at every floor. These drop-down to the basement waste-separators, then taken elsewhere by recycling garbage collection for recycling. 

Expected recycleable waste collected /annum: 

paper / cardboard = 41.5 metric-tonnes
glass / ceramic = 7.0 metric-tonnes
metal = 10.4 metric-tonnes
   
The building is designed to have mechanically-joined connections of materials and its structural connections to facilitate future reuse and recycling at the end of building’s useful-life.


Natural Ventilation & “Mixed-Mode” Servicing

The options for the M&E servicing modes for any ecological building are: 

passive mode
background (mixed) mode
full (specialised) mode
   
The design here optimises on the locality’s bioclimatic responses using ‘mixed mode” M&E servicing. Mechanical air-conditioning and artificial-lighting systems are reduced. Ceiling-fans with de-misters are used for low-energy comfort-cooling.

Wind is used to create internal conditions of comfort by “wind-walls” that a placed parallel to the prevailing wind to direct wind to internal spaces and skycourts for comfort cooling.


 Image by Isni Parra


Embodied Energy and CO2

Embodied-energy studies of the building are useful to indicate the building’s environmental impacts. Subsequently, estimates of CO2 emissions arising from building materials production may be made. Design’s embodied-energy (prepared by our expert) is:


ElementGJ/sq.m. GFA
Structural System• Excavation
• Steel and concrete
• Formwork
764.0
43,850.2
3,113.10
Floor• Steel
• Timber & other material
• Staircases & railings
• Floor finishes
13,013.10
22,648.00
1,752.50
7,793.00
External wall• Curtain wall and bricks
• Aluminium cladding
• Solar panels
5,550.30
2,864.50
12,435.70
External wall and partitions• Bricks
• Other materials
5,482.20
6,078.30
Roof and ceilings• Concrete & membrane
• Water catchment and
drainage
• Ceiling
5,439.00
8,439.80

1,390.70
Fittings• Doors
• Sanitary fittings
1,736.60
490.20
Total:142,841.20

   
Energy sources affect CO2 emissions associated with embodied-energy. If the majority of energy sources is petroleum-related (with some gas and electricity), 80 kg CO2 per GJ of energy averages. The building here is associated with emissions of c. 11.5 thousand tonnes CO2.

Embodied-energy ratio to gross floor area (GJ/m2 GFA) is generally between 6 and 8, but may be more depending on methodology used. The design’s ratio is at the high end (@ 14.2 GJ/m2 GFA) but differs from others since using solar-panels having high embodied-energy will significantly offset operational-energy saved over building-life. High embodied-energy materials used (e.g. aluminium and steel) are however easily recycleable and therefore halving their embodied-energy when reused. Replacing concrete floors with composite timber-floors casettes will reduce embodied-energy by c. 10,000 GJ.

 Image by Isni Parra


Facts

Client: 
URA (Urban Redevelopment Authority) Singapore (Sponsor)
EDITT (Ecological Design in The Tropics) (Sponsor)
NUS (National University of Singapore) (Sponsor) 

Date Start: 
1998 (Competition: design)
Completion Date: 
Pending 

Areas: 
Total gross area: 6,033 sq.m. 
Total nett area: 3,567.16 sq.m.
Total area of plantation: 3,841.34 sq.m. Location: 
Junction of Waterloo Road and Victoria Street, Singapore 

Nos. of Storeys: 26 Storeys 

Site Area:838 sq.m. 

Plot Ratio: 7.1

Project Team :  
Principal-in-charge: 
Dr. Ken Yeang

Design Architects :
Ridzwa Fathan (PIC)
Claudia Ritsch
Azman Che Mat

Design Team :
Azuddin Sulaiman
See Ee Ling Project Architect: 
Andy Chong

Drafting :Sze Tho Kok Cheng

C&S and M&E Engineers : Battle McCarthy (London)

Embodied Energy Expert : Bill Lawson (University of Sydney)

Swan & Maclaren Architects : James Leong (Architect-of-Record)