A software application to evaluate rainwater harvesting system in an eleven story building in Bangladesh

Nadia Afrin; Hasan Abidur Rahaman; Sadia T. Mim; Ridwan S. M. H. Rafi; Monisha Anindita; Ataur Rahman

doi:10.1007/978-3-032-18708-6_58

A software application to evaluate rainwater harvesting system in an eleven story building in Bangladesh

Nadia Afrin
, Hasan Abidur Rahaman
, Sadia T. Mim
, Ridwan S. M. H. Rafi
, Monisha Anindita
, Ataur Rahman

School of Engineering

Independent Researcher
Paschim Morichya
Ahsanullah University of Science and Technology
North South University

Research output: Chapter in Book / Conference Paper › Chapter › peer-review

Abstract

Water supply is a challenging task to most city authorities. Dhaka, the capital of Bangladesh, has a population of 24 million, and does not have a reliable water supply system like developed countries. Although Bangladesh receives lots of rainfall (average rainfall of over 2000 mm), rainwater harvesting, which can meet a significant part of non-potable water demand, is not well-practiced like Australia. This paper presents a software application to demonstrate water savings via a rainwater harvesting system in a hypothetical 11-story building (with 40 apartments) in Dhaka city. It uses daily rainfall data and other model inputs such as roof area, water demand and loss factors to optimise the rainwater tank size for this building. It is found that 70 KL tank would be most appropriate for this building. This study shows the usefulness of rainwater harvesting software to support architects, engineers, residents and policy makers by providing a practical decision-making tool for RWH implementation.

Original language	English
Title of host publication	4th International Conference on Water and Environmental Engineering: Proceedings of iCWEE 2025
Editors	Ataur Rahman, Dharma Hagare, Zuhaib Siddiqui, Taha B. M. J. Ouarda, Muhammad Muhitur Rahman
Place of Publication	Switzerland
Publisher	Springer
Pages	653-658
Number of pages	6
ISBN (Electronic)	9783032187086
ISBN (Print)	9783032187079
DOIs	https://doi.org/10.1007/978-3-032-18708-6_58
Publication status	Published - 2026
Event	International Conference on Water and Environmental Engineering - Sydney, Australia Duration: 19 Nov 2025 → 21 Nov 2025 Conference number: 4th

Publication series

Name	Lecture Notes in Civil Engineering
Volume	822 LNCE
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	International Conference on Water and Environmental Engineering
Abbreviated title	iCWEE
Country/Territory	Australia
City	Sydney
Period	19/11/25 → 21/11/25

Keywords

Dhaka
rainwater
reliability
software
water saving
water supply

Access to Document

10.1007/978-3-032-18708-6_58

Cite this

Afrin, N., Rahaman, H. A., Mim, S. T., Rafi, R. S. M. H., Anindita, M., & Rahman, A. (2026). A software application to evaluate rainwater harvesting system in an eleven story building in Bangladesh. In A. Rahman, D. Hagare, Z. Siddiqui, T. B. M. J. Ouarda, & M. Muhitur Rahman (Eds.), 4th International Conference on Water and Environmental Engineering: Proceedings of iCWEE 2025 (pp. 653-658). (Lecture Notes in Civil Engineering; Vol. 822 LNCE). Springer. https://doi.org/10.1007/978-3-032-18708-6_58

Afrin, Nadia ; Rahaman, Hasan Abidur ; Mim, Sadia T. et al. / A software application to evaluate rainwater harvesting system in an eleven story building in Bangladesh. 4th International Conference on Water and Environmental Engineering: Proceedings of iCWEE 2025. editor / Ataur Rahman ; Dharma Hagare ; Zuhaib Siddiqui ; Taha B. M. J. Ouarda ; Muhammad Muhitur Rahman. Switzerland : Springer, 2026. pp. 653-658 (Lecture Notes in Civil Engineering).

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abstract = "Water supply is a challenging task to most city authorities. Dhaka, the capital of Bangladesh, has a population of 24 million, and does not have a reliable water supply system like developed countries. Although Bangladesh receives lots of rainfall (average rainfall of over 2000 mm), rainwater harvesting, which can meet a significant part of non-potable water demand, is not well-practiced like Australia. This paper presents a software application to demonstrate water savings via a rainwater harvesting system in a hypothetical 11-story building (with 40 apartments) in Dhaka city. It uses daily rainfall data and other model inputs such as roof area, water demand and loss factors to optimise the rainwater tank size for this building. It is found that 70 KL tank would be most appropriate for this building. This study shows the usefulness of rainwater harvesting software to support architects, engineers, residents and policy makers by providing a practical decision-making tool for RWH implementation.",

keywords = "Dhaka, rainwater, reliability, software, water saving, water supply",

author = "Nadia Afrin and Rahaman, \{Hasan Abidur\} and Mim, \{Sadia T.\} and Rafi, \{Ridwan S. M. H.\} and Monisha Anindita and Ataur Rahman",

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doi = "10.1007/978-3-032-18708-6\_58",

language = "English",

isbn = "9783032187079",

series = "Lecture Notes in Civil Engineering",

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booktitle = "4th International Conference on Water and Environmental Engineering: Proceedings of iCWEE 2025",

note = "International Conference on Water and Environmental Engineering, iCWEE ; Conference date: 19-11-2025 Through 21-11-2025",

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Afrin, N, Rahaman, HA, Mim, ST, Rafi, RSMH, Anindita, M & Rahman, A 2026, A software application to evaluate rainwater harvesting system in an eleven story building in Bangladesh. in A Rahman, D Hagare, Z Siddiqui, TBMJ Ouarda & M Muhitur Rahman (eds), 4th International Conference on Water and Environmental Engineering: Proceedings of iCWEE 2025. Lecture Notes in Civil Engineering, vol. 822 LNCE, Springer, Switzerland, pp. 653-658, International Conference on Water and Environmental Engineering, Sydney, Australia, 19/11/25. https://doi.org/10.1007/978-3-032-18708-6_58

A software application to evaluate rainwater harvesting system in an eleven story building in Bangladesh. / Afrin, Nadia; Rahaman, Hasan Abidur; Mim, Sadia T. et al.
4th International Conference on Water and Environmental Engineering: Proceedings of iCWEE 2025. ed. / Ataur Rahman; Dharma Hagare; Zuhaib Siddiqui; Taha B. M. J. Ouarda; Muhammad Muhitur Rahman. Switzerland: Springer, 2026. p. 653-658 (Lecture Notes in Civil Engineering; Vol. 822 LNCE).

Research output: Chapter in Book / Conference Paper › Chapter › peer-review

TY - CHAP

T1 - A software application to evaluate rainwater harvesting system in an eleven story building in Bangladesh

AU - Afrin, Nadia

AU - Rahaman, Hasan Abidur

AU - Mim, Sadia T.

AU - Rafi, Ridwan S. M. H.

AU - Anindita, Monisha

AU - Rahman, Ataur

N1 - Conference code: 4th

PY - 2026

Y1 - 2026

N2 - Water supply is a challenging task to most city authorities. Dhaka, the capital of Bangladesh, has a population of 24 million, and does not have a reliable water supply system like developed countries. Although Bangladesh receives lots of rainfall (average rainfall of over 2000 mm), rainwater harvesting, which can meet a significant part of non-potable water demand, is not well-practiced like Australia. This paper presents a software application to demonstrate water savings via a rainwater harvesting system in a hypothetical 11-story building (with 40 apartments) in Dhaka city. It uses daily rainfall data and other model inputs such as roof area, water demand and loss factors to optimise the rainwater tank size for this building. It is found that 70 KL tank would be most appropriate for this building. This study shows the usefulness of rainwater harvesting software to support architects, engineers, residents and policy makers by providing a practical decision-making tool for RWH implementation.

AB - Water supply is a challenging task to most city authorities. Dhaka, the capital of Bangladesh, has a population of 24 million, and does not have a reliable water supply system like developed countries. Although Bangladesh receives lots of rainfall (average rainfall of over 2000 mm), rainwater harvesting, which can meet a significant part of non-potable water demand, is not well-practiced like Australia. This paper presents a software application to demonstrate water savings via a rainwater harvesting system in a hypothetical 11-story building (with 40 apartments) in Dhaka city. It uses daily rainfall data and other model inputs such as roof area, water demand and loss factors to optimise the rainwater tank size for this building. It is found that 70 KL tank would be most appropriate for this building. This study shows the usefulness of rainwater harvesting software to support architects, engineers, residents and policy makers by providing a practical decision-making tool for RWH implementation.

KW - Dhaka

KW - rainwater

KW - reliability

KW - software

KW - water saving

KW - water supply

UR - https://www.scopus.com/pages/publications/105031893033

UR - https://go.openathens.net/redirector/westernsydney.edu.au?url=https://doi.org/10.1007/978-3-032-18708-6_58

U2 - 10.1007/978-3-032-18708-6_58

DO - 10.1007/978-3-032-18708-6_58

M3 - Chapter

AN - SCOPUS:105031893033

SN - 9783032187079

T3 - Lecture Notes in Civil Engineering

SP - 653

EP - 658

BT - 4th International Conference on Water and Environmental Engineering: Proceedings of iCWEE 2025

A2 - Rahman, Ataur

A2 - Hagare, Dharma

A2 - Siddiqui, Zuhaib

A2 - Ouarda, Taha B. M. J.

A2 - Muhitur Rahman, Muhammad

PB - Springer

CY - Switzerland

T2 - International Conference on Water and Environmental Engineering

Y2 - 19 November 2025 through 21 November 2025

ER -

Afrin N, Rahaman HA, Mim ST, Rafi RSMH, Anindita M, Rahman A. A software application to evaluate rainwater harvesting system in an eleven story building in Bangladesh. In Rahman A, Hagare D, Siddiqui Z, Ouarda TBMJ, Muhitur Rahman M, editors, 4th International Conference on Water and Environmental Engineering: Proceedings of iCWEE 2025. Switzerland: Springer. 2026. p. 653-658. (Lecture Notes in Civil Engineering). doi: 10.1007/978-3-032-18708-6_58

A software application to evaluate rainwater harvesting system in an eleven story building in Bangladesh

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