New Blogspot Address

I am transferring to a new blogspot address combining all my other blogspots http://pupclass.blogspot.com,
http://modern-arki.blogspot.com, and
http://greenarki.blogspot.com.

My new blogspot would be
http://architectureoverload.blogspot.com.

Sorry for the inconvenience and hoping you visit my new site.

Thesis Blog

I am opening a window for students of architecture to have their thesis works viewed and appreciated by others. I am inviting thesis students to send me their thesis project for publishing here. Please email me the following:
Your Name
School
Thesis Year
Thesis Executive Summary
Pictures of your presentation boards and drawings

Be proud of your work! Share it with others!

Ten Most Unique Church

1. Harajuku: Japanese Futuristic ChurchThis futuristic protestant church is located in Tokyo and it was first unveiled by the design firm of Ciel Rouge Creation in 2005. The ceiling is specially made to reverberate natural sound for 2 seconds to provide a unique listening experience for worshipers and tourists.

2. Saint Basil's Cathedral: The Red Square 's Colorful Church

The St. Basil's Cathedral is located on the Red Square in Moscow , Russia . A Russian Orthodox church, the Cathedral sports a series of colorful bulbous domes that taper to a point, aptly named onion domes, that are part of Moscow's Kremlin skyline.

The cathedral was commissioned by Ivan the Terrible to commemorate the capture of the Khanate of Kazan. In 1588 Tsar Fedor Ivanovich had a chapel added on the eastern side above the grave of Basil Fool for Christ, a Russian Orthodox saint after whom the cathedral was popularly named.

3. Hallgrímskirkja: Iceland 's Most Amazing Church

The Hallgrímskirkja (literally, the church of Hallgrímur ) is a Lutheran parish church located in Reykjavík , Iceland . At 74.5 metres (244 ft), it is the fourth tallest architectural structure in Iceland . The church is named after the Icelandic poet and clergyman Hallgrímur Pétursson (1614 to 1674), author of the Passion Hymns. State Architect Guðjón Samúelsson's design of the church was commissioned in 1937; it took 38 years to build it.

4. Temppeliaukio Kirkko: The Rock Church

Temppeliaukio Kirkko ( Rock Church ) is a thrilling work of modern architecture in Helsinki . Completed in 1952, it is built entirely underground and has a ceiling made of copper wire. It was designed by architect brothers Timo and Tuomo Suomalainen and completed in 1969. They chose a rocky outcrop rising about 40 feet above street level, and blasted out the walls from the inside. It is one of the most popular tourist attractions in Helsinki and frequently full of visitors.

5. Cathedral of Brasília: The Modern Church of architect Oscar Niemeyer

The Catedral Metropolitana Nossa Senhora Aparecida in the capital of Brazil is an expression of the architect Oscar Niemeyer. This concrete-framed hyperboloid structure, seems with its glass roof to be reaching up, open, to heaven. On 31 May 1970, the Cathedral's structure was finished, and only the 70 m diameter of the circular area were visible. Niemeyer's project of Cathedral of Brasília is based in the hyperboloid of revolution which sections are asymmetric. The hyperboloid structure itself is a result of 16 identical assembled concrete columns. These columns, having hyperbolic section and weighing 90 t, represent two hands moving upwards to heaven. The Cathedral was dedicated on 31 May 1970 .

6. Borgund Church: Best Preserved Stave Church

The Borgund Stave Church in Lærdal is the best preserved of Norway 's 28 extant stave churches. This wooden church, probably built in the end of the 12th century, has not changed structure or had a major reconstruction since the date it was built. The church is also featured as a Wonder for the Viking civilization in the video game Age of Empires II: The Age of Kings.


7. Las Lajas Cathedral: A Gothic Church Worthy of a Fairy TaleThe Las Lajas Cathedral is located in southern Colombia and built in 1916 inside the canyon of the Guaitara River . According to the legend, this was the place where an indian woman named María Mueses de Quiñones was carrying her deaf-mute daughter Rosa on her back near Las Lajas ("The Rocks"). Weary of the climb, the María sat down on a rock when Rosa spoke (for the first time) about an apparition in a cave.

Later on, a mysterious painting of the Virgin Mary carrying a baby was discovered on the wall of the cave. Supposedly, studies of the painting showed no proof of paint or pigments on the rock - instead, when a core sample was taken, it was found that the colors were impregnated in the rock itself to a depth of several feet. Whether true or not, the legend spurred the building of this amazing church.

8. St. Joseph Church: Known for its Thirteen Gold Domed RoofSt. Joseph The Betrothed is an Ukrainian Greek-Catholic Church in Chicago . Built in 1956, it is most known for its ultra-modern thirteen gold domed roof symbolizing the twelve apostles and Jesus Christ as the largest center dome. The interior of the church is completely adorned with byzantine style icons (frescoes). Unfortunately the iconographer was deported back to his homeland before he was able to write the names of all the saints as prescribed by iconographic traditions.


9. Ružica Church: Where Chandeliers are made of Bullet Shells

Located over the Kalemegdan Fortress in Belgrade, Serbia, the Ružica Church is La small chapel decorated with... with trench art! Its chandeliers are entirely made of spent bullet casing, swords, and cannon parts..

The space the church now occupies was used by the Turks as gunpowder storage for over 100 years and it had to be largely rebuilt in 1920 after WWI. Though damaged by bombings there was an upshot to the terrible carnage of The Great War. While fighting alongside England and the US , Serbian soldiers on the Thessaloniki front took the time to put together these amazing chandeliers. It is one of the world's finest examples of trench art.


10.Chapel of St-Gildas: Built into the base of a bare rocky cliff

The Chapel of St-Gildas sits upon the bank of the Canal du Blavet in Brittany, France . Built like a stone barn into the base of a bare rocky cliff, this was once a holy place of the Druids. Gildas appears to have travelled widely throughout the Celtic world of Corwall, Wales , Ireland and Scotland . He arrived in Brittany in about AD 540 and is said to have preached Christianity to the people from a rough pulpit, now contained within the chapel.

Heritage Conservation Society Lecture on Church Heritage Conservation

The Heritage Conservation Society invites everyone to attend "SAVING GRACE: Case Studies on the Architectural Conservation of Heritage Churches Here and Abroad" on Saturday, 31 January 2009, from 10:00 a.m. to 12:00 noon at the Army & Navy Club Building (now Museo ng Maynila) in Rizal Park.

Speakers will include:

Ms. Tina Paterno, Senior Conservator from New York City
- the Smithfield Church, built in 1925, in Pittsburgh, Pennsylvania,
- the Cathedral of the Incarnation, built in 1876, in Garden City, New York;

Archt. Arnulfo Dado, of the National Museum
- San Agustin Church, Intramuros, Manila, completed in 1607 and declared a World Heritage Site by UNESCO,
- the Parish Church of San Raymundo de Peñafort, Rizal (Malaueg), Cagayan, built in 1607 and declared a National Cultural Treasure by the NCCA;

Archt. Angel Lazaro, of Angel Lazaro & Associates
- Parish Church of San Andres, in Masinloc, Zambales, built in 1607 and declared a National Cultural Treasure by the NCCA.

Lunch will be served. Minimum donation is P 200 for non-members, P 100 for HCS members, and P 50 for undergraduate students. For more information, please contact the HCS at 521-2239 or hcs_secretariat@ yahoo.com.

URBAN HEAT ISLAND FORMATION IN THE CONTEXT OF URBAN SUSTAINABILITY (Part 5)

Conclusion and Recommendations

While more definitive studies are continuing, it is clear from the data that the built environment, and corresponding lack of vegetation, is several degrees warmer than nearby natural environments. The increasing effects in tropical mega-cities have created increasing concern for the sustainability of the urban system.

Studies in the urban heat environment have gone a long way. Most of the earlier researches though were focused from the meteorological point of view. The motivation was to see the implications of heat island on weather phenomenon. Another group of researchers tried to study heat environment from an architectural point of view, where their intentions were to provide the ambient temperature and comfort condition inside buildings. The former was of concern of regional scale and the latter was of building scale but none approach it from the scale of a city. However, with the advent of remote sensing and aeronautics research using techniques developed for space technologies, a sudden interest is observed.

Recent studies that have used these technologies have focused on the understanding of land use patterns to heat production and its effect on the lowest layers in the atmosphere. The concern is on how the characteristics of the urban landscape drive this urban heat island effect and how urbanization and growth shape the dynamics of the effect. Parks and greenbelts reduce temperatures while the Central Business district (CBD), commercial areas, and even suburban housing tracts are areas of warmer temperatures. Every house, building, and road changes the microclimate around it, contributing to the urban heat islands of our cities. The urban heat island effect will exist as long as urban areas exist. However, the growth of heat islands can be slowed, and its effects reduced.

The purpose of this paper is to shed light on the urban heat environment, their implications to urban sustainability, and to identify measures to alleviate it. There are many possible measures that exist to make cities more sustainable and habitable and urban planners and policy makers should think this phenomenon seriously before the situation gets worse further. In some affluent cities such as Tokyo, Los Angeles and Atlanta, the problem has been identified as quite serious and major researches are being initiated. Present and future mega-cities like Metro Manila should learn the lessons from these cities and appropriate urban policies should be put into action.

References:

Akbari, H. 1998. “Cool Roofs Save Energy” ASHRAE proceedings, January.

Luvall, Dr. Jeffrey C and Dr. Dale Quattrochi. "Whats hot in Huntsville and what's not: A NASA thermal remote sensing project" 14 Feb 1996
http://www.ghcc.msfc.nasa.gov/land/heatisl/heatisl.htm

Heat Island Group "Air Quality" 27 Apr 2004
http://eetd.lbl.gov/HeatIsland/AirQuality

NASA "NASA Satellite Confirms Urban Heat Islands Increase Rainfall Around Cities" 18 Jun 2002
http://www.gsfc.nasa.gov/topstory/20020613urbanrain.html

“Urban Climate Modifications”

http://www-personal.umich.edu/-rohemma/resint.htm

Wolman, Abel, (1965). quoted by, White, R. & J. Whitney, (1992). "Cities and the Environment: An Overview". In, Stren, R., R. White & J. Whitney, (eds.), Sustainable Cities: Urbanization & the Environment in International Perspective, Boulder, CO.: Westview Press. pp. 8-51.

Rohinton Emmanuel.“Summertime Urban Heat Island Mitigation: Propositions based on an Investigation of Intra-Urban Air Temperature Variations” Architectural Science Review

http://www-personal.umich.edu/-rohemma/resint.htm

Stone, Brian Jr. and Michael O. Rodgers. 2001. Urban Form and Thermal Efficiency: How the Design of Cities Influences the Urban Heat Island Effect . Journal of the American Planning Association 67(2), 186-198.

Cardelino CA, Chameides WL. 1990. Natural hydrocarbons, urbanization, and urban ozone. Journal of Geophysical Research 95 (D9):13971-13979.

Stone, Brian Jr. Urban heat and Air Pollution: An Emerging Role for Planners in the Climate Change Debate. Journal of the American Planning Association , forthcoming.

Stone, Brian Jr. 2004. Paving Over Paradise: How Land Use Regulations Promote Residential Imperviousness . Journal of Landscape and Urban Planning 69, 101-113.

Stone, Brian Jr. 2003. Air Quality by Design: Harnessing the Clean Air Act to Manage Metropolitan Growth . Journal of Planning Education and Research 23, 177-190.

Gorsevski, Virginia; Taha, Haider; Quattrochi, Dale; and Luvall, Jeff. “Air Pollution Prevention Through Urban Heat Island Mitigation: An Update on the Urban Heat Island Pilot Project”. EPA

Estes, Maurice Jr.; Gorsevski, Virginia; Russell, Camille; Quattrochi, Dale; and Luvall, Jeffrey. ”The Urban Heat Island Phenomenon and Potential Mitigation Strategies”. 1999 EPA National Planning Conference.

“Here Comes Urban Heat” Science @NASA

http://rsd.gsfc.nasa.gov/912/urban

Rosenberg, Matt. “Urban Heat Islands: It sure is Hot in the City!”.

http://geography.about.com/library/weekly/aa121500a.htm

“State of Environmental Situation”

http://ncr.denr.gov.ph/introduction/envisituation.html

URBAN HEAT ISLAND FORMATION IN THE CONTEXT OF URBAN SUSTAINABILITY (Part 4)

Heat Island Mitigation Strategies: The Role of Urban Planning

Till today, urban developers and policy makers are not serious on the implications of the worsening heat environment. The costs as discussed above, are tremendous which would force this effect to be taken seriously into up-coming days. On one hand, there are certain things that might be difficult to change such as urban thermal mass, weather patterns and surface roughness. Elimination of these effects would require complete and drastic new way of thinking in the way cities are built and operate. But on the other hand, there are plenty of corrective measures that can be taken within the existing urban set-up such as increasing vegetation cover, albedo modification, efficient energy consumption and management of heat discharge sources which are possible by supportive urban planning and policy measures.

Increasing vegetative cover

Tree plantation is the most obvious and the easiest way to improve heat environment in existing urban set-ups. Trees help in a number of ways; they provide direct shade to the buildings from solar radiation so that less radiation will reach to the building walls, windows and roof to be absorbed. They also create shades in the soil and concrete pavements to act as heat sink for the buildings and asphalt roads. Increase in water vapor due to evapotranspiration by plant leaves is significant in taking the heat away. Trees also act as pollutants, carbon and noise sink. It helps to mitigate greenhouse effects by consuming carbon dioxide in the photosynthesis process. It is estimated that a street lined with trees can reduce dust particles of about 7,000 particles per liter of air. However, care must be used in choosing the type of trees since some trees give off organic compounds (hydrocarbons) into the atmosphere and contribute to ozone in forming smog.

Planting programs can help reduce urban temperatures and make cities greener. Within ten to fifteen years – the time it takes a tree to grow to a useful size – trees placed in strategic locations can reduce heating and cooling costs by an average of 10-20%. Over their lifetimes, trees can be much less expensive than air conditioners and the energy needed to run them.

Well-distributed green parks and water bodies around the urban city act as recreational and aesthetic beauty. Urban planners are concerned with parks and water bodies but their motivation is for aesthetic beauty rather than betterment of heat environment. In the existing urban set-up, metropolitan authorities could encourage green belts around the roadside and plantations. This strategy depend on the local climate condition whether the place of concern is hot-dry or hot-humid in nature. In the hot-dry regions, the evaporation from the soil is minimal, urban parks and water bodies increase water evaporation from both the plants and the soil, consequently the effect on local climate could be significant and desirable. On the contrary, hot-humid regions have low specific evaporation and reduction in the wind speed near the ground is undesirable from the comfort viewpoint (Givoni, 1997).

Albedo modification

Albedo is defined as the ability of the surface to reflect solar radiation. It is different from reflectivity in the sense that reflectivity might only account for visual bands whereas albedo accounts for all the incoming radiation to the surface. It is basically hemispherical reflection of radiation integrated over the solar spectrum (0.3 – 2.5 mm) and includes specular and diffuse reflection (Bretz et al, 1998). Asphalt roads, concrete pavements and corrugated roofs have low values of albedo which form the major part of the dense mega-cities. Low albedo surfaces absorb significant proportion of the solar radiation and contribute in worsening urban heat environment. The mitigation strategy therefore is to improve over-all albedo of the urban surfaces.

Improving the urban albedo, such as for buildings and other surfaces have additional advantages. Apart from facilitating urban surfaces to reflect most of the solar radiation, it also contributes in cooling the buildings so that air-conditioning demand is greatly reduced. Studies have shown that the cooling energy savings from the high-albedo roofs and walls in the buildings are very significant. Any heat island mitigation strategy would be required to identify the opportunities that exist in improving the urban surface albedo. The surface albedo property can be greatly enhanced either by mixing it with some third material that can greatly increase its albedo or replacing the traditional construction material completely. The “cool construction materials” can be used to improve solar reflectance without significant cost additions. The choice of light and white colored surfaces is possible, however, a distinction between the light colored surface and high albedo surface should be well understood since light colored surface only means high reflectivity in the visible band.

The effect of albedo modification by one or combination of various methods at the scale of a city and their implication to the overall temperature is not very much studied. In general, the motivation for such albedo improvement has been observed from the air-conditioning viewpoint at building scale rather than reduction of overall thermal situation at the city scale. Building owners, builders and architects have choice to select color of the rooftops, type of construction materials and other measures. Urban planners and policy makers can change the attitude of the stakeholders by improving building codes with thermal considerations, energy management and appropriate urban planning.

Efficient energy consumption and management of heat discharge sources

Since mega-cities are characterized by high energy consumption, ample opportunities exist to manage energy and the heat discharge sources. As stated earlier, air-conditioning is the major stationary heat discharge sources arising from buildings. Air-conditioning units discharge heat to the urban atmosphere continuously due to the energy consumption inside the buildings in various forms (mainly gas and electricity) and absorbed solar radiation through the building surfaces. Three types of management is important here. First, is to enhance energy efficiencies of the end use appliances and the way of supplying energy. Second, is the energy efficient building design from architecture standpoint. And third, is the location of heat discharge sources. High-rise buildings allow the flexibility of placing the air-conditioning units (or plants) at the height significantly above the ground surfaces and the prevailing wind at the height can effectively swipe away the heat without letting it to concentrate in the urban canopy. Although there could be concern on the costs that would conflict with the optimization of piping, a balance optimum is possible. A mixture of high-rise and medium rise buildings in the dense urban area also enhance the over-all urban ventilation by creating turbulence in wind canopy, the ventilation in such case might be better than the urban area with low density but with buildings of similar heights.

The effect of improving appliance efficiencies in buildings on urban heat environment might be very small without changing the way the energies are supplied into the buildings. A central air-conditioning system is energy and cost-wise more efficient than the smaller units in each rooms or at each floors in the multi-storey structures. District cooling is favorable in the dense urban structure. In individual detached homes, small measures such as shading of air-conditioning units can produce effective results.

Transportation is the major heat discharge source that is mobile and difficult to simulate. It is encouraging that the automobile fuel efficiency is improving but at the same time, concentration of vehicles and traffic congestion is also increasing in the mega-cities and the net effect of which is unfavorable from urban warming standpoint. An exact extent of automobile’s implication on urban heat environment is largely unknown. However, traffic management and reduction in the vehicle idle time in core city areas is expected to greatly relieve the heat island phenomenon.

The anthropogenic heat discharges in the big cities are significant. Major cities in the US are reported to have summer anthropogenic heating in the range of 20-40 W/m2 in comparison to the solar radiation of 700-1000 W/m2 for clear or partly cloudy day at noon (Taha, 1997).

In Los Angeles, the increased power costs the ratepayers about $100,000 per hour, about $100 million per year. It is estimated that about 1-1.5 gigawatts of power are used to compensate the impact of the heat island. Reducing the energy cost would also help in reducing the air pollution problem. By 2015, when the full implementation of reflective surfaces and vegetation comes in full-scale, the state will save about $4 billion per year in reduced cooling energy demand.

In order to combat urban heat island, the air quality has to be improved reducing the level of toxic gases, more trees to be planted, save energy and thus reduce pollution, and thereby save cost of energy and money, and improve the overall livability. Air quality management systems should include abatement and other measures to improve air quality, and to maintain air quality within a defined range. Enacting urban planning legislation to increase the amount of vegetation could see a reduction in temperatures. Another method is to reduce the amount of heat absorbed by civil structures by using construction materials that have high albedo and not prone to heat absorption.

The urban metabolism concept (Wolman, 1965) indicates that environmental quality improvement in urban areas rests on the careful use and removal of energy and matter. In the urban design sense, environment conscious urban designers can use at least three tools for the realization of the goals of energy efficiency, transport reduction and air quality improvement. These are thru zoning laws, building laws, and landscape control. Some attempts at utilizing these tools for the purposes of energy and transportation reduction have already been made (cf. Emmanuel, 1995). Although these attempts are from the temperate climate cities, they offer possible models for hot-humid cities.

In the enhancement of the urban physical environment, quality should be the major goal of climate-conscious design. In order to achieve the design goals of energy efficiency, transportation reduction and air quality improvement, in the tropics, design strategies could take one of the following forms:

Building form guidelines

Activity pattern controls

Control of relationship to natural features

Building Form

Court-yard forms

Orientation

Activity Relationships for Comfortable Moving & Transport Reduction

Shopping Streets

Gathering Places

Provisions for Evening Life (Evenings are tropics' winter).

Pedestrian Paths and Nodes

Network for Cars

Relationship to Natural Features - Landscape Controls

Relationship to Waterbodies

Collection of Rainwater

Topographical Relationships

URBAN HEAT ISLAND FORMATION IN THE CONTEXT OF URBAN SUSTAINABILITY (Part 3)

Measurement of Heat Island

Several techniques are applied to measure heat islands. The importance of these techniques depends upon the nature of requirements. Micro-scale heat island measurements are done by the temperature sensors and some instrumentation which are fairly accurate and well-established. However, in the viewpoint of large-scale measurements such as a mega-city, these are not useful. Site observation with the help of sensors in a mobile source such as a car is one of the important tools to measure heat island effect but is labor intensive and the result difficult to validate due to varying weather conditions each time the observation is done.

Recently, remote sensing technology with the help of satellite images is commonly being used to get information on heat islands. Remote sensing techniques can be used to obtain the thermal images of the place in concern and provide information on land use. Loss of green surfaces, information on surface reflectivity of solar radiation and buildings can be obtained with the help of satellite images. The comparison between past and present date can show the trend of heat island along with land use information which are very important in identifying the degree of severity of heat island phenomenon in a particular place.

There are inherent problems though of remote sensing technology in the planning process. It can provide thermal images but there is difficulty in segregating the types of thermal sources such as from mobile sources or stationary sources. It provides snapshot of situation without any knowledge of the mechanisms that is going on in the urban system. The land use, building and transportation information could be obtained from remote sensing techniques but it is not possible to see their contribution and sensitiveness on the heat island phenomenon.

The information obtained from remote sensing need to be coupled with numerical climatic models in order to analyze the effect of various planning alternatives of land use and heat discharge to improve the urban heat environment. These models are able to study the physical climatic phenomenon in the urban system. In this sense, remote sensing data along with Geographic Information System (GIS) is a powerful tool in providing information to the numerical models which can study, simulate various planning alternatives and can predict the implications on heat environment. Numerical models are the powerful tools to understand the mechanisms of heat island. These models can be validated with site data measurements or from remote sensing techniques.

The following image is an aerial thermal image of a mall and surroundings located in Huntsville, Alabama. The image, courtesy of NASA, was taken approximately five hours after sunset. The dark shades correspond to cooler temperatures. The mall parking lot (lower left quadrant of the photo) has a temperature of 24.0 degrees Celsius, while a forest, located in the upper right quadrant has a temperature of 17.1 degrees Celsius.

Although satellite data are very useful for analysis of the urban heat island effect at a coarse level, they do not lend themselves to developing a better understanding of which surfaces across the city contribute to or drive the development of the urban heat island effect. Analysis of thermal energy responses for specific or discrete surfaces typical of the urban landscape (e.g. asphalt, building rooftops, vegetation) requires measurements at a very fine spatial scale (i.e., <15m)>

The explosion of new knowledge on the theoretical aspects of urban climate change is not well matched by practical applications. In particular, urban designers and planners are yet to utilize the current knowledge to develop architectural and urban design strategies for the mitigation of the negative effects of urban heat island. This is in part due to some weaknesses in current methods. For example, some of the problems associated with remote sensing techniques hinder the detection of air temperature heat island that directly affects human comfort as opposed to surface temperature heat island. These problems include, difficulties in "seeing" the vertical active surfaces, the not so well defined coupling of surface and air temperatures in urban areas and inhomogeniety of urban surfaces leading to a patch work of emissivity and albedo. The problem with urban-rural difference method in general is that it assumes weather over time remains constant. Furthermore, the intra-urban differences are ignored. It is pointed out that it is the intra-urban climatic difference that is of value for urban planners and designers interested in mitigating the negative effects of UHIs. In other methods, it is assumed that rural climate is somehow "natural" to the area. However, in the context of rapid global urbanization, there are very few rural areas remaining with their "natural" climates intact.

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