Modelling Sewer Systems Costs with Multiple Linear Regression

Marchionni, Valentina; Lopes, Nuno; Mamouros, Luis; Covas, Dídia

doi:10.1007/s11269-014-0759-z

Cited by 27 publications

(15 citation statements)

References 9 publications

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“…Additionally, the exact total cost for the replacement of each asset is difficult to estimate, as it should include items such as the removal of the existent asset, the cost of the new asset, personnel costs, machinery, etc. Recent literature provides insight on how to calculate these costs for urban water and wastewater systems in Portuguese utilities (Marchionni et al 2015;Marchionni et al 2014). In addition, the Portuguese regulator ERSAR is developing a technical guide to summarize the cost of construction of urban water infrastructures in Portugal (Covas et al 2018); including a web application where infrastructure costs can be easily calculated.…”

Section: Managementmentioning

confidence: 99%

Defining complementary tools to the IVI. The Infrastructure Degradation Index (IDI) and the Infrastructure Histogram (H_I)

Rochera

Estruch-Juan

Gómez

et al. 2019

Urban Water Journal

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Defining complementary tools to the IVI. The Infrastructure Degradation Index (IDI) and the Infrastructure Histogram (HI) The Infrastructure Value Index (IVI) is quickly becoming a standard as a valuable tool to quickly assess the state of urban water infrastructure. However, its simple nature (as a single metric) can mask some valuable information and lead to erroneous conclusions. This paper introduces two complementary tools to IVI: The Infrastructure Degradation Index (IDI) and the Infrastructure Histogram (HI). The IDI is focused on time (compared to the IVI, focused on value), represents an intuitive concept and behaves in a linear way. The joint analysis of IVI and IDI provides results in a more complete understanding of the state of the assets, while maintaining the simplicity of the tools. The Infrastructure Histogram allows for a full evaluation of the infrastructure state and provides a detailed picture of network age compared to its expected life, as well as an order of magnitude of the required investments in the following years.

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Section: Managementmentioning

confidence: 99%

Defining complementary tools to the IVI. The Infrastructure Degradation Index (IDI) and the Infrastructure Histogram (H_I)

Rochera

Estruch-Juan

Gómez

et al. 2019

Urban Water Journal

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“…This equation is useful for analyses, especially in South America, because it was developed using information available in the region. However, the methodology presented in this paper is generic in the sense that it allows alternative cost model(s) equations to be used, e.g., Maurer et al [31], Moeini and Afshar [32] and Marchionni et al [33], amongst others.…”

Section: Design Costmentioning

confidence: 99%

Impact of Self-Cleansing Criteria Choice on the Optimal Design of Sewer Networks in South America

Montes

Kapelan

Saldarriaga

2019

Water

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This paper aims to analyze different sediment self-cleansing criteria and to find out what the corresponding implications are on the optimal design of sewer systems. A methodology based on enumeration is used to find the sewer network design that minimizes the costs of construction while fulfilling a number of design criteria including self-cleansing constraints. Three stormwater and wastewater sewer networks are used for the analyses. The results indicate that in cases where the terrain slopes and design flow rates are higher, the self-cleansing restrictions are irrelevant to the optimal design. However, when the terrain slopes and the design flow rates are lower, these restrictions affect the final design. Using the results obtained, a graph is constructed showing the limit at which self-cleansing restrictions become a constraining parameter in optimal design for sewer networks. It is expected that this graph will be useful for the design of future sewer networks in low-income areas, where the design of traditional, gravity-based sewer systems is essential.

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“…Grinder pumps require intensive maintenance, while vacuum collection systems have lower energy usage than the GP collection systems. Construction and operational costs represent often a primary issue to be examined for the specific application (Karovic & Mays 2014;Marchionni et al 2014). In general, alternative collection systems are suitable for communities of 10,000 people or less.…”

Section: Typical Design Parameters and Applications Of Alternative Collection Systemsmentioning

confidence: 99%

Alternative collection systems for decentralized wastewater management: an overview and case study of the vacuum collection system in Eretria town, Greece

Gikas

Ranieri

Sougioultzis

et al. 2017

Water Practice and Technology

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In small and rural communities, the installation cost of conventional gravity-flow collection systems is often very expensive due to the presence of rocky terrain, high water table, unstable soils, extremely flat terrain, which may impose substantial difficulties in construction. Pressure, vacuum and septic tank effluent gravity collection systems are among the alternatives sewers used most commonly. As these systems are designed to be watertight, design allowances for infiltration and inflow are not required. Moreover, exfiltration does not occur in these systems, thus eliminating the risk for soil or underground water contamination. The installation cost of the alternative wastewater collection systems is often significantly lower by as much as 20–50%, compared to conventional gravity-flow collection systems. In general, alternative collection systems are suitable for communities of 10,000 people or less. In this paper, alternative wastewater collection systems are described and their benefits, costs and drawbacks are compared to conventional gravity-flow collection systems. Eretria, a relatively flat littoral town in Greece, with many shallow archaeological ruins has been selected to illustrate the optimal selection of a sewer system. Using multi-criteria analysis, the vacuum sewer system has been selected as being the most advantageous, both in terms of financial and technical considerations.

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Modelling Sewer Systems Costs with Multiple Linear Regression

Cited by 27 publications

References 9 publications

Defining complementary tools to the IVI. The Infrastructure Degradation Index (IDI) and the Infrastructure Histogram (H_I)

Defining complementary tools to the IVI. The Infrastructure Degradation Index (IDI) and the Infrastructure Histogram (H_I)

Impact of Self-Cleansing Criteria Choice on the Optimal Design of Sewer Networks in South America

Alternative collection systems for decentralized wastewater management: an overview and case study of the vacuum collection system in Eretria town, Greece

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