Abstract
At the moment urban agglomeration sees how cities grow and expand within a shorter period by overlooking the existence of natural ecosystem and green spaces. Natural and built components of the urban environment are the main focal point for sustainable regeneration strategies of a city, but unfortunately the small-scale green areas which are closed to people in the cities are given poor attention and as a result various environmental problems are created. This phenomenon raises globally growing concern for sustainable urban development. To ensure sustainable development and healthy living environment, every country sets some obligatory codes of development. In Bangladesh to control urban development and boost living environment, Bangladesh National Building Code (BNBC), a comprehensive document, is enacted as officially obligatory codes of development in urban areas, in which setback and maximum ground coverage (MGC) are the two major and foremost important rules to maintain for better area planning. Chittagong is the second largest city and commercial capital of Bangladesh and is enriched with mountains, forest, rivers, canals, coastal belt, ancient shrines, and historical structures. In Chittagong city, urban areas become a junk of concrete with its grey pockets lacking green spaces resulting from insensible planning and irresponsible behavior of its citizen. The Anannya Residential Area was developed in 2004 by Chittagong Development Authority (CDA) in Chittagong City which is not fully developed yet. The main concern of this chapter is to rethink residential setback and MGC rules of BNBC from a sustainable regeneration strategy perspective and to suggest several ideas of creating green spaces that can be taken into consideration to recover and enrich the sustainable environmental quality of the urban areas.
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17 March 2020
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Acknowledgment
Dr. Qazi Azizul Mowla, Professor Department of Architecture, BUET
Mr Amit Imtiaz, Lecturer, Department of Architecture, CUET (for Image Render)
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Appendices
Appendices
Appendix 1
Building height (all occupancy type) | Plot size (sq.m.) | Front setback | Rear setback | Side setback |
|---|---|---|---|---|
Up to ten stories or up to 33 m | 134 or less | 1.5 | 1 | 0.8 |
Over 134 up to 201 | 1.5 | 1 | 1 | |
Over 201 up to 268 | 1.5 | 1.5 | 1 | |
Over 268 up to 1340 | 1.5 | 2 | 1.25 | |
Over 1340 | 1.5 | 2 | 1.5 | |
Over ten stories or above 33 m | Any size | 1.5 | 3 | 3 |
Appendix 2
Plot size | Building type (residential) | |||
|---|---|---|---|---|
Sqm | Katha | Road width (m) | FAR | MGC % |
134 or less | 2 or less | 6.0 | 3.15 | 67.5 |
Over 134 up to 201 | Over 2 up to 3 | 6.0 | 3.35 | 65.0 |
Over 201 up to 268 | Over 3 up to 4 | 6.0 | 3.50 | 62.5 |
Over 268 up to 335 | Over 4 up to 5 | 6.0 | 3.50 | 62.5 |
Over 335 up to 402 | Over 5 up to 6 | 6.0 | 3.75 | 60.0 |
Over 402 up to 469 | Over 6 up to 7 | 6.0 | 3.75 | 60.0 |
Over 469 up to 536 | Over 7 up to 8 | 6.0 | 4.00 | 60.0 |
Over 536 up to 603 | Over 8 up to 9 | 6.0 | 4.00 | 60.0 |
Over 603 up to 670 | Over 9 up to 10 | 6.0 | 4.25 | 57.5 |
Over 670 up to 804 | Over 10 up to 12 | 9.0 | 4.50 | 57.5 |
Over 804 up to 938 | Over 12 up to 14 | 9.0 | 4.75 | 55.0 |
Over 938 up to 1072 | Over 14 up to 16 | 9.0 | 5.00 | 52.5 |
Over 1072 up to 1206 | Over 16 up to 18 | 9.0 | 5.25 | 52.5 |
Over 1206 up to 1340 | Over 18 up to 20 | 9.0 | 5.25 | 50.0 |
Over 1340 | Over 20 | 12.0 | 5.50 | 50.0 |
Any size | Any size | 18.0 | 6.00 | 50.0 |
Any size | Any size | 24.0 | 6.50 | 50.0 |
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Islam, R., Das, K.K., Bashar, S.B. (2020). From Grey to Green: Rethinking Setback and MGC Rules as a Sustainable Growth Strategy of Residential Areas – A Case Study of Anannya Residential Area of Chittagong, Bangladesh. In: Ghosh, M. (eds) Perception, Design and Ecology of the Built Environment. Springer Geography. Springer, Cham. https://doi.org/10.1007/978-3-030-25879-5_6
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