The purpose of this research was to determine an alternative formula for calculating the Darcy coefficient in turbulent flow in pipes. The proposed alternate formula is an explicit formula that should be used to replace the Colebrook-White formula for calculating the Darcy coefficient in turbulent flow in pipes since it has higher precision than the explicit formulas that are currently in use. In this investigation, the alternate formula was compared with two explicit formulas commonly used in pipe design, the Swamee-Jain and Pavlov formulas. To determining which formula is better, all of them were compared with the Colebrook-White formula. For this, the average percentage and maximum percentage errors of the Darcy coefficient values calculated with each of the explicit formulas were determined, with the values obtained with the Colebrook-White formula. It was determined that the maximum errors in the calculation of the Darcy coefficient concerning the Colebrook-White formula were: 3,104% for the Swamee-Jain formula, 7,973% for the Pavlov formula and 2,740% for the alternate formula.
<p>El presente trabajo de investigación descriptivo, no experimental y transversal, tiene como objetivo evaluar la vulnerabilidad sísmica de las edificaciones de la zona urbana del distrito de Chiquián, aplicando el model builder del ArcGIS.<br />La metodología propuesta permite la automatización y la creación de un modelo de vulnerabilidad sísmica utilizando la herramienta model builder del ArcGIS, donde se evaluó once parámetros para la determinación del índice de vulnerabilidad y el índice de daños en las edificaciones de la zona urbana del distrito de Chiquián.<br />De un total de 1417 viviendas se encontraron que el 14,7% de las viviendas están en vulnerabilidad baja, el 21,2% en vulnerabilidad media, el 48,8% en vulnerabilidad alta y el 15,2% en vulnerabilidad muy alta. Además, teniendo en cuenta el índice de vulnerabilidad y una aceleración horizontal del terreno de 0,32g, se calcularon que 1209 viviendas (85,32%) sufrían el colapso total y 208 viviendas (14,68%) seguirían en pie con algún daño estructural. Según el índice de daño calculado y teniendo en cuenta el precio por metro cuadrado de construcción, si ocurriera un sismo con las características descritas anteriormente los daños económicos se cuantificarían a la suma de S/.70,043,266.14</p>
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