Case Study Brazil
‘Choosing and Implementing Small-Bore Sewers’ Case Study BRAZIL Antonio da Costa Miranda Neto, consultant, and Jean-Marie Ily, pS-Eau Source: Luis Lobo, WSP 1 Acknowledgements The authors would like to sincerely thank all the managers, technicians, consultants, researchers and users met for their time and assistance during this study, particularly: Professor Ana Lucia Brito, José Carlos Melo, Consultant Clément Metharam, Researcher Hermelinda Rocha, Municipality of Recife Professor Clifford Ericson Junior, Federal Institute for Education, Science and Technology, Pernambuco, Brazil Noemia Ramos Silva Ericson, Consultant Maria Martinele Feitosa Martins, CAESB Caesar Rissoli, CAESB Roberta Henriques, EMBASA Neidejane Mota, EMBASA Ivan Paiva, Consultant Professor Patricia Campos Borja, PhD, Federal University of Bahia,Brazil MARIA TERESA CHENAUD SÁ DE OLIVEIRA, MSc, Federal University of Bahia, Brazil 2 I. Summary The condominial approach, which has been progressively adopted in most Brazilian states over the last thirty years, has met with varying degrees of success. Furthermore, the operators and professionals’ levels of expertise and ownership have also varied. From the engineering point of view, condominial sewerage is based on: - using smaller diameter pipes and manholes; - ‘streamlining the routes’ by reducing the sewer length, sizing the systems more accurately and moving away from the traditional grid-based layouts that require additional costly and unnecessary pipework; - routing the system over private land wherever possible with a view to reducing the sewer length. The aim of simplifying the sewer systems in this way was to reduce costs and thus "do more with the same budget". As a result, condominial sewerage has led to significant improvements in sanitation coverage, particularly for the inhabitants of informal settlements (favelas).
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