<?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>0124-8170</journal-id>
<journal-title><![CDATA[Ciencia e Ingeniería Neogranadina]]></journal-title>
<abbrev-journal-title><![CDATA[Cienc. Ing. Neogranad.]]></abbrev-journal-title>
<issn>0124-8170</issn>
<publisher>
<publisher-name><![CDATA[Universidad Militar Nueva Granada]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0124-81702024000200077</article-id>
<article-id pub-id-type="doi">10.18359/rcin.7279</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis comparativo técnico-económico entre losas aligeradas en dos direcciones y losas tipo viguetas en una dirección. Caso de estudio en la ciudad de Azogues, Ecuador]]></article-title>
<article-title xml:lang="en"><![CDATA[Comparative Technical-Economic Analysis Between Two-Directional Lightened Slabs and One-Directional Joist Slabs: Case Study in Azogues, Ecuador]]></article-title>
<article-title xml:lang="pt"><![CDATA[Análise comparativa técnico-econômica entre lajes nervuradas em duas direções e lajes do tipo vigotas em uma direção. Estudo de caso na cidade de Azogues, no Equador]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Heredia Garzón]]></surname>
<given-names><![CDATA[Ronny Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[León Rojas]]></surname>
<given-names><![CDATA[Ángeles Gabriela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nieto Cárdenas]]></surname>
<given-names><![CDATA[Jaime Xavier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Illescas Cárdenas]]></surname>
<given-names><![CDATA[Paúl Esteban]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Católica de Cuenca &#8220;Campus Azogues&#8221;  ]]></institution>
<addr-line><![CDATA[Azogues ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Católica de Cuenca &#8220;Campus Azogues&#8221;  ]]></institution>
<addr-line><![CDATA[Azogues ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Católica de Cuenca &#8220;Campus Azogues&#8221;  ]]></institution>
<addr-line><![CDATA[Azogues ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Católica de Cuenca &#8220;Campus Azogues&#8221;  ]]></institution>
<addr-line><![CDATA[Azogues ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<volume>34</volume>
<numero>2</numero>
<fpage>77</fpage>
<lpage>94</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0124-81702024000200077&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0124-81702024000200077&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0124-81702024000200077&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: En este estudio se realiza una comparación técnico-económica entre losas aligeradas en dos direcciones (ADD) y losas tipo viguetas en una dirección (TVUD), siendo estas últimas una propuesta de diseño para emplearse en el país. Se consideraron dos proyectos de edificación multifamiliar en Azogues. La investigación se desarrolló mediante el diseño conforme a la norma ACI 318-19 y a la estimación del costo por metro cuadrado de cada tipología. Los resultados indican que la losa TVUD presenta menor peso que la ADD, lo que conlleva a una reducción en las dimensiones de cimientos, vigas y columnas, dando lugar a edificaciones estructuralmente livianas y estables. El análisis económico revela que el costo final de la losa TVUD es menor respecto a cantidad de materiales y mano de obra, gracias a la simplicidad de su proceso constructivo. En Ecuador, la implementación de esta estructura significaría una importante innovación frente a los sistemas de losa convencionales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: This study presents a technical-economic comparison between two-directional lightened slabs (ADD) and one-directional joist slabs (TVUD), the latter being a proposal design for use in the country. Two multifamily building projects in Azogues were analyzed. The research was conducted based on the design standards of ACI 318-19 and the cost estimation per square meter for each slab type. The results indicate that the TVUD slab is lighter than the ADD, leading to a reduction in the dimensions of foundations, beams, and columns, resulting in structurally lighter and more stable buildings. The economic analysis reveals that the final cost of the TVUD slab is lower in terms of material and labor requirements, due to the simplicity of its construction process. In Ecuador, implementing this structure would represent a significant innovation compared to conventional slab systems.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo: Neste estudo, realiza-se uma comparação técnico-econômica entre lajes nervuradas em duas direções (ADD) e lajes do tipo vigotas em uma direção (TVUD), sendo estas últimas uma proposta de design a ser utilizada no país. Foram considerados dois projetos de edificações multifamiliares em Azogues. A pesquisa foi desenvolvida com base no projeto conforme a norma ACI 318-19 e na estimativa de custo por metro quadrado de cada tipologia. Os resultados indicam que a laje TVUD apresenta menor peso que a ADD, o que leva a uma redução nas dimensões de fundações, vigas e colunas, resultando em edificações estruturalmente leves e estáveis. A análise econômica revela que o custo final da laje TVUD é menor em relação à quantidade de materiais e mão de obra, graças à simplicidade do seu processo construtivo. No Equador, a implementação dessa estrutura representaria uma importante inovação em comparação com os sistemas de laje convencionais.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[losas aligeradas]]></kwd>
<kwd lng="es"><![CDATA[optimización constructiva]]></kwd>
<kwd lng="es"><![CDATA[eficiencia estructural]]></kwd>
<kwd lng="es"><![CDATA[edificaciones sostenibles]]></kwd>
<kwd lng="es"><![CDATA[concreto reforzado]]></kwd>
<kwd lng="en"><![CDATA[Lightened Slabs]]></kwd>
<kwd lng="en"><![CDATA[Constructive Optimization]]></kwd>
<kwd lng="en"><![CDATA[Structural Efficiency]]></kwd>
<kwd lng="en"><![CDATA[Sustainable Buildings]]></kwd>
<kwd lng="en"><![CDATA[Reinforced Concrete]]></kwd>
<kwd lng="pt"><![CDATA[lajes nervuradas]]></kwd>
<kwd lng="pt"><![CDATA[otimização construtiva]]></kwd>
<kwd lng="pt"><![CDATA[eficiência estrutural]]></kwd>
<kwd lng="pt"><![CDATA[edificações sustentáveis]]></kwd>
<kwd lng="pt"><![CDATA[concreto armado]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>[1]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Almulhim]]></surname>
<given-names><![CDATA[M. S. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Taher]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Environmental impact assessment of residential building structural systems: A case study in Saudi Arabia]]></article-title>
<source><![CDATA[Journal of Building Engineering]]></source>
<year>2023</year>
<volume>72</volume>
<page-range>106644</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>[2]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Davila]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Fortes]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Crespo]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Rodriguez]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparative analysis of slabs foundation: lightweight by expanded polystyrene blocks opposite solid slabs]]></article-title>
<source><![CDATA[Informes de la construcción]]></source>
<year>2015</year>
<volume>67</volume>
<numero>538</numero>
<issue>538</issue>
</nlm-citation>
</ref>
<ref id="B3">
<label>[3]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aguiar]]></surname>
<given-names><![CDATA[A. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Oliveira]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Reis]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Nzambi]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Punching shear strength of waffle flat slabs with opening adjacent to elongated columns]]></article-title>
<source><![CDATA[Engineering Structures]]></source>
<year>2021</year>
<volume>243</volume>
<page-range>112641</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>[4]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gomaa]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Lotfy]]></surname>
<given-names><![CDATA[E. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Khafaga]]></surname>
<given-names><![CDATA[S. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hosny]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Ahmed]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Experimental, numerical, and theoretical study of punching shear capacity of corroded reinforced concrete slab-column joints]]></article-title>
<source><![CDATA[Engineering Structures]]></source>
<year>2023</year>
<volume>289</volume>
<page-range>116280</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>[5]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bermeo]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Placencia]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comportamiento de Conexión Losa-Columna en Nudos Interiores de Pórticos con Losas Planas y Vigas Embebidas]]></article-title>
<source><![CDATA[Revista Politécnica]]></source>
<year>2020</year>
<volume>45</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>17-24</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>[6]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salehuddin]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Zaini]]></surname>
<given-names><![CDATA[S. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Megat]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Rahim]]></surname>
<given-names><![CDATA[N. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Rahim]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Experimental Investigation on the Effectiveness of Truss-Shaped Punching Shear Reinforcement in Flat Slab]]></article-title>
<source><![CDATA[Journal of Engineering and Technological Sciences]]></source>
<year>2022</year>
<volume>54</volume>
<numero>4</numero>
<issue>4</issue>
</nlm-citation>
</ref>
<ref id="B7">
<label>[7]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Sornoza]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Hidalgo]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Mieles]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Alcívar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Structural Pathologies of Floor Slabs]]></article-title>
<source><![CDATA[Revista Internacional de Ingeniería de Estructuras]]></source>
<year>2021</year>
<volume>26</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>746-60</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>[8]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Astorqui]]></surname>
<given-names><![CDATA[J. Santa Cruz]]></given-names>
</name>
<name>
<surname><![CDATA[Merino]]></surname>
<given-names><![CDATA[M. del Río]]></given-names>
</name>
<name>
<surname><![CDATA[Cachero Alonso]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Monje García]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Rubio Madueño]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fissure analysis in one-directional slabs with on-site concrete rib by continuous formwork]]></article-title>
<source><![CDATA[Construction and Building Materials]]></source>
<year>2009</year>
<volume>23</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>2567-79</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>[9]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nyong]]></surname>
<given-names><![CDATA[W. Uwemedimo]]></given-names>
</name>
<name>
<surname><![CDATA[Desmond]]></surname>
<given-names><![CDATA[O. Olusegun]]></given-names>
</name>
<name>
<surname><![CDATA[Olalekan]]></surname>
<given-names><![CDATA[O. Samson]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparative analysis and design of solid ribbed and waffle slabs for residential buildings: A review]]></article-title>
<source><![CDATA[Indian Journal of Engineering]]></source>
<year>2023</year>
<volume>20</volume>
<numero>53</numero>
<issue>53</issue>
<page-range>1014</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>[10]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Najarro]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<source><![CDATA[Evaluación de resistencia estructural de losas aligeradas con unidades de albañilería convencional y compuesto utilizado en edificaciones, Lima - 2019]]></source>
<year>2019</year>
<publisher-loc><![CDATA[Lima, Perú ]]></publisher-loc>
<publisher-name><![CDATA[Universidad César Vallejo]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<label>[11]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Leyva]]></surname>
<given-names><![CDATA[S. A. Gómez]]></given-names>
</name>
<name>
<surname><![CDATA[Bruno]]></surname>
<given-names><![CDATA[L. D. Sebastián]]></given-names>
</name>
</person-group>
<source><![CDATA[Análisis comparativo en un sistema aporticado entre losa aligerada convencional y losa con bloque EPS, en una vivienda unifamiliar, Nuevo Chimbote - 2021]]></source>
<year>2021</year>
<publisher-loc><![CDATA[Chimbote, Perú ]]></publisher-loc>
<publisher-name><![CDATA[Universidad César Vallejo]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<label>[12]</label><nlm-citation citation-type="book">
<collab>American Concrete Institute (ACI) Committee 318</collab>
<source><![CDATA[Building Code Requirements for Structural Concrete. ACI 31819]]></source>
<year>2019</year>
<edition>2019</edition>
<publisher-loc><![CDATA[Farmington Hills, MI, USA ]]></publisher-loc>
<publisher-name><![CDATA[American Concrete Institute (ACI)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<label>[13]</label><nlm-citation citation-type="book">
<collab>American Society of Civil Engineers/Structural Engineering Institute (ASCE/SEI)</collab>
<source><![CDATA[Minimum Design Loads and Associated Criteria for Buildings and Other Structures. ASCE/SEI 7-22]]></source>
<year>2022</year>
<edition>2022</edition>
<publisher-loc><![CDATA[Reston, VA, USA ]]></publisher-loc>
<publisher-name><![CDATA[American Society of Civil Engineers (ASCE)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<label>[14]</label><nlm-citation citation-type="book">
<collab>Asociación Colombiana de Ingeniería Sísmica (AIS)</collab>
<source><![CDATA[Requisitos esenciales para edificios de concreto reforzado de tamaño y altura limitados. AIS 114-17]]></source>
<year>2017</year>
<edition>2017</edition>
<publisher-loc><![CDATA[Bogotá, Colombia ]]></publisher-loc>
<publisher-name><![CDATA[Comité Conjunto de la Asociación Colombiana de Ingeniería Sísmica (AIS) e Instituto Americano del Concreto (ACI)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<label>[15]</label><nlm-citation citation-type="book">
<collab>Cámara de la Construcción (Camicon)</collab>
<source><![CDATA[Salarios mínimos por Ley 2023 (En dólares)]]></source>
<year>2023</year>
<edition>2023</edition>
<publisher-loc><![CDATA[Ecuador ]]></publisher-loc>
<publisher-name><![CDATA[Contraloría General del Estado]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B16">
<label>[16]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Javidan]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modelling and slenderness design of high-capacity hybrid beam-columns under lateral cyclic loading]]></article-title>
<source><![CDATA[Journal of Constructional Steel Research]]></source>
<year>2021</year>
<volume>180</volume>
<page-range>106573</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>[17]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salem]]></surname>
<given-names><![CDATA[T. N.]]></given-names>
</name>
<name>
<surname><![CDATA[El-Sakhawy]]></surname>
<given-names><![CDATA[N. R.]]></given-names>
</name>
<name>
<surname><![CDATA[El-Latief]]></surname>
<given-names><![CDATA[A. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Experimental and numerical study for the optimization of bottom of foundation shapes on soft soils]]></article-title>
<source><![CDATA[Innovative Infrastructure Solutions]]></source>
<year>2021</year>
<volume>6</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>93</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>[18]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ghoreishiamiri]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Raja]]></surname>
<given-names><![CDATA[P. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Ismail]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Karouei]]></surname>
<given-names><![CDATA[S. F. Hashemi]]></given-names>
</name>
<name>
<surname><![CDATA[Balaji]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Oh]]></surname>
<given-names><![CDATA[T. A. E. Hwan]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of corrosion inhibitors on reinforced concrete properties - A review]]></article-title>
<source><![CDATA[Surface Review and Letters]]></source>
<year></year>
<volume>30</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>2330006</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
