Service wait time is a key performance indicator in the food service industry. A real-case scenario of a cafeteria situated on a college campus is studied for service time. During the lunch hours, there is always a large queue that impacts serviceability. This study identifies the stations and events where the wait time increase and suggests with a solution. A discrete event simulation (DES) mo...

Abstract Caisson foundations, typically adopted for both onshore and offshore structures, are usually subject to combined loading acting during working conditions exceptional events such as earthquakes. Assessment of their performance under general loadings is therefore fundamental, serviceability ultimate limit states. In this study, a simplified displacement-based approach, aimed at prelimina...

Reinforced concrete flat slabs are used worldwide in multi-story buildings. In these slabs, the design is often governed by punching shear and serviceability. The mitigation of issues during usually leads to increased raw material consumption costs. Previous studies have shown that using Fiber Concrete (FRC) or High-Strength (HSC) only at vicinity column, while casting rest slab with Normal Str...

The aim of this paper is to present a generic decision support system for selecting an optimal repair alternative for aging infrastructure systems considering sustainability. Emphasis is placed on how to properly decide on a maintenance, repair, rehabilitation, replacement strategy for deteriorating structures, applying the concept of life-cycle cost analysis. Taking into account the decision t...

This paper’s main aim was to explain the process of characterising structural over-strength factor (R), seismic behaviour (Q), and effective elastic stiffness, Keff, cantilever-reinforced concrete (RC) urban bridge columns with solid circular cross-sections for use in design under Serviceability Limit State (SLS). Similarly, mathematical models have been proposed determine average values stiffn...

Performance based seismic design (PBSD) is a cogent design approach that allows engineers to design structures with a predictable seismic performance for a specified level of hazard. In contrast to the conventional limit state or strength and serviceability based design in which a structure is designed to withstand severe load combinations and be functional under normal load conditions, PBSD go...

The evaluation of the safety level in concrete structures should be done considering the stochastic behavior of main involved parameters not only in ultimate conditions but also in serviceability and durability ones. In fact, particularly in concrete structures, the large variability of fundamental mechanical parameters, may give rise to important deviations from the behavior expected if a dete...

Emerging mobile applications rely their delivery on the serviceability of the underlying wireless networks. However, this serviceability, expressed in terms of quality of service (QoS) provided by a network available to a service user at a given geographical location and time, is a priori unknown. In turn, it influences the application-level QoS provided to a mobile service user. As a solution ...

Temperature is an important environmental factor for long-span bridges because it induces thermal loads on structural components that cause considerable displacements, stresses, and damage. Hence, critical to acquire up-to-date information the status, sustainability, serviceability of under daily seasonal temperature fluctuations. This paper intends investigate effects variability displacements...

The objective of this study was to develop quantitative acoustic emission (AE) interpretation for uplift pipeline–soil interaction behaviour, enabling early warning serviceability and ultimate limit state failures in the field. A series large-scale experiments performed on a steel pipe sand with different burial depths (i.e., stress levels), varying rates deformation were imposed. suite AE para...