Speech intelligibility, the percentage of speech that a listener can understand is a prime factor... more Speech intelligibility, the percentage of speech that a listener can understand is a prime factor during the architecture jury session. The paper analyses the acoustical quality of Jury rooms in the capital city of Bangladesh-Dhaka to recommend an achievable sonic environment for the design presentations. Jury room of Architecture department in Ahsanullah University of Science & Technology (AUST) has been selected as the case jury room to test the quality of speech intelligibility in two phases: Existing designed case room and Redesigned case room, by measuring the independent variables such as reverberation time, the percentage of syllable articulation and sound-to-noise ratio. The finding reveals that the existing situation is very much affected by the lack of sound diffusion all over the place and inappropriate sound pressure level, while the condition has been improved after redesigning the waffle ceiling. Finally, the study will recommend a recommendation for effective distribution of speech intelligibility in the internal space of the jury room.
In architecture jury rooms (located at different universities in Dhaka), most of the time jury se... more In architecture jury rooms (located at different universities in Dhaka), most of the time jury sessions experience poor daylighting during daytime, even though there are abandon natural light exists outside. Artificial lighting becomes necessary to observe the design displays hanging on the wall of the jury rooms. Though artificial light may satisfy the visual needs of the students, jurors and observers, it may cause tiresome and exhausting after a certain time period. On the other hand, provision of direct solar radiation through apertures in addition to daylight may cause overheating, resulting in thermal discomfort, which not only fails to provide a stimulating environment for better teaching-learning process, but also at the same time creates pressure on the overall national energy demand. This research aims to study the thermal comfort in architecture jury rooms in presence of vertical (slit vertical window) and horizontal (skylight) apertures used to enhance the visibility of design displays hanging on the wall round a year, specially in summer period. First, model of case jury space with six apertures was developed in ECOTECT and distribution of daylight in the interior space was measured by dynamic daylight simulation program-DAYSIM. Then, the case jury room with the different aperture configurations was remodelled in Sketchup-OpenStudio. Thermal simulation was done by EnergyPlus considering four output variables-Air temperature, Mean radiant temperature, Relative humidity and Wind speed for measuring Predicted Percentage of Dissatisfied (PPD). Finally, dynamic daylighting and thermal results were combined to find out the most effective aperture configuration ensuring effective daylight on display wall. Analysis shows, slit vertical window on east façade as the most feasible window configuration for the case jury room considering visual and thermal comfort with respect to Dhaka climate for illuminating display walls considering the occupied hours of jury
1st International Conference on Green Architecture (ICGrA 2017), At Dhaka, Bangladesh
Despite the fact that students work and perform better under natural lighting condition, observat... more Despite the fact that students work and perform better under natural lighting condition, observation shows that most of the architecture design studios in Dhaka are often lit by artificial means and the condition of daylighting is not satisfactory. Artificial light can satisfy visual needs of the students and studio guides, however it may cause tiresome and exhausting after a time period, also at the same time can create pressure on the overall energy demand. As daylighting is beneficial to psychological, physiological and aesthetic order of a place, the architectural features might be explored by ensuring adequate daylight as a prime source of light during learning sessions inside design studios. This research aims to identify window features of existing architectural design studios, located in Dhaka, that affect the studio lighting and analyse the effectiveness of different window configurations to enhance the quality of luminous environment of design studios. Trials have been done to emphasize the procedure of achieving better window design strategies for improved daylighting in architecture design studios. The 3D model of case studio was first generated in the ECOTECT to study the distribution of daylight in the interior space with static daylight performance metrics. Then, the decisions were refined with DAYSIM simulation program to compare the decisions with dynamic annual climate-based daylight performance metrics. It is expected that the outcome of this research will help architects and designers to generate some guidelines for window configurations to improve the luminous environment of architecture design studios in Dhaka as well as in the other cities of Bangladesh.
Noise pollution is becoming an alarming nuisance in urban life and among different sources of cit... more Noise pollution is becoming an alarming nuisance in urban life and among different sources of city noise, traffic noise is generally the most omnipresent. One of the major factors to influence the noise is traffic flow. On the other hand, spatial configuration can be analysed through some measures like connectivity, integration, etc. In this research, a correlation analysis between traffic noise and spatial configuration has been done using different attributes such as space syntax, linear regression. Dhaka City Corporation (DCC) area has been taken as study area. First, Axial lines of the street network were identified and their integration values were calculated by using the space syntax methodology. Thereafter, primary data of sound level were collected and mapped. Finally, regression analyses were conducted using the sound level values as the response variable and integration values as predictor variables. The result shows that traffic noise is more related with the global integration i.e. the number of turns for reaching all the axial spaces, which indeed is a significant predictor variable.
The paper analyses the chronology of the home based work abbreviated as, HBW, from its very begin... more The paper analyses the chronology of the home based work abbreviated as, HBW, from its very beginning to the present situation. In the early phase of civilization, lack of job provision created the demand for income generating business ideas which could be well managed by remaining at home, referred to 'Home Based Work'. It went through numerous changes with the change of context, time and more importantly, human development by reason of some notable factors such as, changes in the system of production, new technologies pertaining to education and science, industrial revolution, two world wars. HBW plays as a significant component in the lives of many lower income households in the urban societies. In the contemporary world, lots of jobs can very efficiently be done at home, although, there are many occupations which essentially create the need to be away from home. Presently, different innovative technologies have opened up a wide scope for running HBW. Depending upon the attitude of the government and aspiration of common people, HBW can be converted to an effective solution from just a possibility.
During jury sessions at daytime, artificial lighting becomes necessary in most of the Architectur... more During jury sessions at daytime, artificial lighting becomes necessary in most of the Architecture departments located at different Universities in Dhaka to observe the design displays hanging on the wall of the jury rooms. Sometimes, it is difficult for jurors to get a clear vision of drawings and images without artificial lighting, as direct penetration of daylight into the room is often restricted to avoid glare. Artificial light may ensure visual efficiency but it may cause tiresome and exhausting after a certain time period. On the other hand, the changing nature of daylight has a great benefit of psychological relaxation which might be very helpful during the jury sessions, both for students, guests and jurors. The aim of this research is to study the effectiveness of different slit vertical window and horizontal skylight configurations at jury rooms to enhance the visibility of design displays hanging on the wall. Daylight simulation is done using the computer based software. At the beginning, model of case jury space was developed in ECOTECT. Existing lighting condition was analysed. Then, these models were exported to a physically-based backward raytracer, RADIANCE Synthetic Imaging software, to generate realistic lighting levels, for validating and crosschecking the ECOTECT results. Finally, performance of different options was evaluated following trial and error method to ensure effective daylight on display wall. It is expected that the outcome of this research will help architects and designers to improve the daylight performance of architectural jury rooms.
The paper analyses the issues faced by a minuscule area of a slum habitat in Dhaka city, Banglade... more The paper analyses the issues faced by a minuscule area of a slum habitat in Dhaka city, Bangladesh. The area of the slum worked upon, the " Beltola Bostee " 1 , faces major problems of frequent flooding when the households of the area become unfit to live in. Hence, the inhabitants of this area shift to share other households, overcrowding the already cramped living quarters. The idea of " Beltola Lilies " emerges as an attempt to resolve the problem and provide the best possible solution. The " Beltola Lilies " is conceived as a modular accommodation that stands on ground during the dry season, but floats on water during floods, providing the inhabitants a healthy, organised, productive and cost-effective solution for housing. Built with inexpensive and indigenous materials, requiring minimum effort in construction and maintenance, having low energy needs and being sufficiently livable, it promises to address and eradicate some of the current dwelling problems in the slums that exist all over the country.
Speech intelligibility, the percentage of speech that a listener can understand is a prime factor... more Speech intelligibility, the percentage of speech that a listener can understand is a prime factor during the architecture jury session. The paper analyses the acoustical quality of Jury rooms in the capital city of Bangladesh-Dhaka to recommend an achievable sonic environment for the design presentations. Jury room of Architecture department in Ahsanullah University of Science & Technology (AUST) has been selected as the case jury room to test the quality of speech intelligibility in two phases: Existing designed case room and Redesigned case room, by measuring the independent variables such as reverberation time, the percentage of syllable articulation and sound-to-noise ratio. The finding reveals that the existing situation is very much affected by the lack of sound diffusion all over the place and inappropriate sound pressure level, while the condition has been improved after redesigning the waffle ceiling. Finally, the study will recommend a recommendation for effective distribution of speech intelligibility in the internal space of the jury room.
In architecture jury rooms (located at different universities in Dhaka), most of the time jury se... more In architecture jury rooms (located at different universities in Dhaka), most of the time jury sessions experience poor daylighting during daytime, even though there are abandon natural light exists outside. Artificial lighting becomes necessary to observe the design displays hanging on the wall of the jury rooms. Though artificial light may satisfy the visual needs of the students, jurors and observers, it may cause tiresome and exhausting after a certain time period. On the other hand, provision of direct solar radiation through apertures in addition to daylight may cause overheating, resulting in thermal discomfort, which not only fails to provide a stimulating environment for better teaching-learning process, but also at the same time creates pressure on the overall national energy demand. This research aims to study the thermal comfort in architecture jury rooms in presence of vertical (slit vertical window) and horizontal (skylight) apertures used to enhance the visibility of design displays hanging on the wall round a year, specially in summer period. First, model of case jury space with six apertures was developed in ECOTECT and distribution of daylight in the interior space was measured by dynamic daylight simulation program-DAYSIM. Then, the case jury room with the different aperture configurations was remodelled in Sketchup-OpenStudio. Thermal simulation was done by EnergyPlus considering four output variables-Air temperature, Mean radiant temperature, Relative humidity and Wind speed for measuring Predicted Percentage of Dissatisfied (PPD). Finally, dynamic daylighting and thermal results were combined to find out the most effective aperture configuration ensuring effective daylight on display wall. Analysis shows, slit vertical window on east façade as the most feasible window configuration for the case jury room considering visual and thermal comfort with respect to Dhaka climate for illuminating display walls considering the occupied hours of jury
1st International Conference on Green Architecture (ICGrA 2017), At Dhaka, Bangladesh
Despite the fact that students work and perform better under natural lighting condition, observat... more Despite the fact that students work and perform better under natural lighting condition, observation shows that most of the architecture design studios in Dhaka are often lit by artificial means and the condition of daylighting is not satisfactory. Artificial light can satisfy visual needs of the students and studio guides, however it may cause tiresome and exhausting after a time period, also at the same time can create pressure on the overall energy demand. As daylighting is beneficial to psychological, physiological and aesthetic order of a place, the architectural features might be explored by ensuring adequate daylight as a prime source of light during learning sessions inside design studios. This research aims to identify window features of existing architectural design studios, located in Dhaka, that affect the studio lighting and analyse the effectiveness of different window configurations to enhance the quality of luminous environment of design studios. Trials have been done to emphasize the procedure of achieving better window design strategies for improved daylighting in architecture design studios. The 3D model of case studio was first generated in the ECOTECT to study the distribution of daylight in the interior space with static daylight performance metrics. Then, the decisions were refined with DAYSIM simulation program to compare the decisions with dynamic annual climate-based daylight performance metrics. It is expected that the outcome of this research will help architects and designers to generate some guidelines for window configurations to improve the luminous environment of architecture design studios in Dhaka as well as in the other cities of Bangladesh.
Noise pollution is becoming an alarming nuisance in urban life and among different sources of cit... more Noise pollution is becoming an alarming nuisance in urban life and among different sources of city noise, traffic noise is generally the most omnipresent. One of the major factors to influence the noise is traffic flow. On the other hand, spatial configuration can be analysed through some measures like connectivity, integration, etc. In this research, a correlation analysis between traffic noise and spatial configuration has been done using different attributes such as space syntax, linear regression. Dhaka City Corporation (DCC) area has been taken as study area. First, Axial lines of the street network were identified and their integration values were calculated by using the space syntax methodology. Thereafter, primary data of sound level were collected and mapped. Finally, regression analyses were conducted using the sound level values as the response variable and integration values as predictor variables. The result shows that traffic noise is more related with the global integration i.e. the number of turns for reaching all the axial spaces, which indeed is a significant predictor variable.
The paper analyses the chronology of the home based work abbreviated as, HBW, from its very begin... more The paper analyses the chronology of the home based work abbreviated as, HBW, from its very beginning to the present situation. In the early phase of civilization, lack of job provision created the demand for income generating business ideas which could be well managed by remaining at home, referred to 'Home Based Work'. It went through numerous changes with the change of context, time and more importantly, human development by reason of some notable factors such as, changes in the system of production, new technologies pertaining to education and science, industrial revolution, two world wars. HBW plays as a significant component in the lives of many lower income households in the urban societies. In the contemporary world, lots of jobs can very efficiently be done at home, although, there are many occupations which essentially create the need to be away from home. Presently, different innovative technologies have opened up a wide scope for running HBW. Depending upon the attitude of the government and aspiration of common people, HBW can be converted to an effective solution from just a possibility.
During jury sessions at daytime, artificial lighting becomes necessary in most of the Architectur... more During jury sessions at daytime, artificial lighting becomes necessary in most of the Architecture departments located at different Universities in Dhaka to observe the design displays hanging on the wall of the jury rooms. Sometimes, it is difficult for jurors to get a clear vision of drawings and images without artificial lighting, as direct penetration of daylight into the room is often restricted to avoid glare. Artificial light may ensure visual efficiency but it may cause tiresome and exhausting after a certain time period. On the other hand, the changing nature of daylight has a great benefit of psychological relaxation which might be very helpful during the jury sessions, both for students, guests and jurors. The aim of this research is to study the effectiveness of different slit vertical window and horizontal skylight configurations at jury rooms to enhance the visibility of design displays hanging on the wall. Daylight simulation is done using the computer based software. At the beginning, model of case jury space was developed in ECOTECT. Existing lighting condition was analysed. Then, these models were exported to a physically-based backward raytracer, RADIANCE Synthetic Imaging software, to generate realistic lighting levels, for validating and crosschecking the ECOTECT results. Finally, performance of different options was evaluated following trial and error method to ensure effective daylight on display wall. It is expected that the outcome of this research will help architects and designers to improve the daylight performance of architectural jury rooms.
The paper analyses the issues faced by a minuscule area of a slum habitat in Dhaka city, Banglade... more The paper analyses the issues faced by a minuscule area of a slum habitat in Dhaka city, Bangladesh. The area of the slum worked upon, the " Beltola Bostee " 1 , faces major problems of frequent flooding when the households of the area become unfit to live in. Hence, the inhabitants of this area shift to share other households, overcrowding the already cramped living quarters. The idea of " Beltola Lilies " emerges as an attempt to resolve the problem and provide the best possible solution. The " Beltola Lilies " is conceived as a modular accommodation that stands on ground during the dry season, but floats on water during floods, providing the inhabitants a healthy, organised, productive and cost-effective solution for housing. Built with inexpensive and indigenous materials, requiring minimum effort in construction and maintenance, having low energy needs and being sufficiently livable, it promises to address and eradicate some of the current dwelling problems in the slums that exist all over the country.
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