This paper introduces a method for calculating the volume of storage tanks and analyzes demand scenarios within Rainwater Harvesting (RWH) systems. The water mass balance approach in a daily step-time was utilized to evaluate non-potable water demand across various residential rooftop areas in the city of Andahuaylas, Peru. The region is arid and experiences significant rainfall patterns during four months per year. The results demonstrated that for rooftop areas larger than 250 m2 , the demand can be fully met using commercial tanks larger than 1m3 . With system failures below 0.5%, it is possible to supply rooftop areas of 150 m2 with a volume of 5m3 . These findings highlight crucial factors to be considered during the planning and design of RWH systems in the Andean regions of Peru.

This study aims to investigate the water footprint of Santa Rosa Hospital, situated in the city of Lima, Peru. The analysis period covers the years 2015 to 2019, before the onset of the COVID-19 pandemic, and the period from 2020 to 2022, after the COVID-19 pandemic. The primary objective is to understand how the health crisis has impacted water consumption and to identify measures taken to optimize its usage. The methodology involves the calculation of both blue and grey water footprints, with the green footprint excluded due to the absence of green areas in the hospital premises. Data essential for determining the water footprint were sourced from technical reports published by public scientific entities. The findings revealed an increase in the water footprint following the onset of COVID-19. A management study implemented significant savings for the year 2022. Through this analysis, ...

This paper explores the effect of cap stiffness and soil dilation on the structural response of pile groups subjected to lateral increasing monotonic loads. For such scope, a finite element-based model for studying pile configurations of 3x3 to 3x7 in homogeneous sand deposits is proposed. The model employs solid elements with twenty nodes to represent the soil and pile domains, while zero-thickness interface elements are used to model the contact state at the soil-pile interface. The adequacy of the model is firstly validated with experimental data from literature and then the associated parametric studies involving the two aforementioned aspects are performed. For the studied examples, the obtained results indicate that the reduction of the cap stiffness substantially increases the lateral displacement of the system. This increment under ultimate loads can be as high as three times the...