<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-5609</journal-id>
<journal-title><![CDATA[Ingeniería e Investigación]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. Investig.]]></abbrev-journal-title>
<issn>0120-5609</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ingeniería, Universidad Nacional de Colombia.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-56092017000200006</article-id>
<article-id pub-id-type="doi">10.15446/ing.investig.v37n2.57752</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Identifying explanatory variables of structural state for optimum asset management of urban drainage networks: a pilot study for the city of Bogota]]></article-title>
<article-title xml:lang="es"><![CDATA[Identificación de factores de riesgo para la gestión patrimonial óptima de sistemas de drenaje urbano: estudio piloto en la ciudad de Bogotá]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Angarita]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Niño]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Pontificia Universidad Javeriana  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Pontificia Universidad Javeriana  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Pontificia Universidad Javeriana  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Pontificia Universidad Javeriana  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Pontificia Universidad Javeriana  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<volume>37</volume>
<numero>2</numero>
<fpage>6</fpage>
<lpage>16</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-56092017000200006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-56092017000200006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-56092017000200006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The aim of this work is to identify and quantify physical and environmental explanatory variables for the structural state of urban drainage networks in a pilot study located in Bogota, Colombia. The analysis used information from 2291 CCTV inspections collected by the Water and Sewerage Company of Bogota (EAAB, from its Spanish initials) using tele-operated equipment during 2008-2010. Linear regression models were established to identify the environmental and physical characteristics of the pipes that are significantly associated with the occurrence, magnitude and type of the failures commonly found. Despite the fact that the correlation levels show that the developed model has a very low predictive capacity, it was found that the process of selecting assets for CCTV inspection can be optimized, increasing the success rate in failure detection.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Este artículo presenta los resultados de un estudio piloto realizado en la ciudad de Bogotá para identificar y cuantificar factores de riesgo físicos y/o ambientales de las redes de drenaje urbano, en el marco de un enfoque proactivo de gestión patrimonial de la infraestructura de servicios públicos. El análisis utiliza información de 2291 inspecciones de CCTV recopiladas por la Empresa de Acueducto y Alcantarillado de Bogotá (EAAB) mediante equipos tele-operados durante los años 2008 a 2010. Mediante modelos de regresión lineal se establecieron entre el conjunto de variables recopiladas mediante procesos de inspección por CCTV, aquellas que muestran una asociación estadísticamente significativa con la ocurrencia, magnitud y/o tipo de fallos que típicamente se encuentran en las conducciones, entre otras, material (Gres y P.V.C) y diámetro de la tubería. Los resultados muestran que es posible optimizar los recursos para la inspección de las redes con fines de mejorar la tasa de éxito en la detección de fallos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[CCTV]]></kwd>
<kwd lng="en"><![CDATA[explanatory variables]]></kwd>
<kwd lng="en"><![CDATA[sewer asset management]]></kwd>
<kwd lng="en"><![CDATA[sewer system]]></kwd>
<kwd lng="en"><![CDATA[structural failure]]></kwd>
<kwd lng="es"><![CDATA[CCTV]]></kwd>
<kwd lng="es"><![CDATA[gestión patrimonial]]></kwd>
<kwd lng="es"><![CDATA[factores de riesgo]]></kwd>
<kwd lng="es"><![CDATA[fallos estructurales]]></kwd>
</kwd-group>
</article-meta>
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