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Pinch analysis to reduce fire susceptibility by redeveloping urban built forms

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Abstract

Fire disasters pose a severe threat to the functionality of the cities and their sustainable development. Lack of analytical approach in research literature hinders the development of a fire-resilient city. A novel analytical framework is proposed in this paper to reduce the overall fire susceptibility of a city through a cost-effective redevelopment of the existing urban built forms (UBF). The proposed framework involves a regression model to capture the linear relationship between the fire susceptibility of an area and the built-up variables at a granular scale. Additionally, extended pinch analysis is incorporated in the framework to minimize the financial expenses incurred during the redevelopment, for the reduction in fire susceptibility of a city. The applicability of the proposed framework is demonstrated through a case study involving the southern region of Mumbai, India. The results suggest medium-rise buildings should be the main constituent for the UBF in Mumbai to reduce its fire susceptibility cost-effectively. Based on the illustrated case study, specific policies are recommended. The proposed novel methodology endorses a holistic decision-making process, applicable in developing fire-resilient cities in developing countries.

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Abbreviations

a j :

Linear regression coefficient of fire susceptibility for jth built form

C :

Total redevelopment cost

c j :

Cost coefficient for constructing jth built form

C c :

Total cost of construction

d j :

Cost coefficient for demolishing an existing jth built form

D c :

Total cost of demolition

J :

Set of UBF variables

S p :

Fire susceptibility

\(S_{p}^{\min }\) :

Minimum value of the fire susceptibility

\(x_{j}^{{{\text{ex}}}}\) :

Existing footprint of jth built form

x j :

Print of jth built form

\(x_{j}^{\max }\) :

Maximum value of the footprint of jth built form

\(x_{j}^{\min }\) :

Minimum value of the footprint of jth built form

x m :

Construction footprint for a building type m

x n :

Demolition footprint for a building type n

∆cnm :

Change in the cost caused by the demolition of xn and construction of xm

∆s/∆c :

Susceptibility-to-cost ratio

∆snm :

Change in the fire susceptibility caused by the demolition of xn and construction of xm

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Authors and Affiliations

  1. Centre for Urban Science and Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India

    Vaibhav Kumar

  2. Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India

    Santanu Bandyopadhyay

  3. Department of Computer Science and Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India

    Krithi Ramamritham

  4. Centre for Urban Science and Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India

    Arnab Jana

Authors
  1. Vaibhav Kumar
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  2. Santanu Bandyopadhyay
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  3. Krithi Ramamritham
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  4. Arnab Jana
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Correspondence to Arnab Jana.

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Kumar, V., Bandyopadhyay, S., Ramamritham, K. et al. Pinch analysis to reduce fire susceptibility by redeveloping urban built forms. Clean Techn Environ Policy 22, 1531–1546 (2020). https://doi.org/10.1007/s10098-020-01895-y

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  • DOI: https://doi.org/10.1007/s10098-020-01895-y

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