Potential use of residual soil and geosynthetic

Rainfall-induced slope failures frequently occur in residual soil slopes in tropical regions. Previous research works indicated that the main cause of slope failure in residual soil slopes is rainfall infiltration. The infiltrating water decreases matric suction in the soil and consequently reduces shear strength of the residual soil slopes. One of the possible preventive measures for the rainfall-induced slope failures is the use of a soil cover to minimize water infiltration into the slope. Previous research works showed that a capillary barrier system could be used as a soil cover to minimize rainfall infiltration. A capillary barrier is a soil cover consisting of a fine-grained soil layer overlying a coarse-grained soil layer. In this study, the use of a local residual soil derived from Bukit Timah Granite as the finegrained layer in a capillary barrier system was investigated.Doctor of Philosophy (CEE

Pengaruh Kecerdasan Emosional Terhadap Kinerja Anggota di Skadron Udara 1

In the development of human resources management were modern, then it is the duty of management to study and develop the efforts of human beings can be integrated effectively into the organization dipimpinya. Similarly ditutut management to constantly develop new ways to attract and retain members of the unit and institution that can still flourish. One way is to practice emotional intelligence members to improve the performance of its performance with the aim of achieving the desired goals. In this case the man is the least resources play an important role in the survival of the organization. Therefore, emotional intelligence which is owned by the members will determine the degree of success of an organization in improving the performance of its members. This study entitled Effect of Emotional Intelligence in the Member Performance Against Air Squadron 1. The purpose of this study was to determine the factors of emotional intelligence and the performance of members in the Air Squadron 1 Supadio air base. The method used in this research is survey method with all members of the population in Air Squadron 1, amounting to as many as 84 people. Research variables used for emotional intelligence factors include self-awareness, self-regulation, motivation, empathy and social skills. Research variables used for the performance factors include the quantity of work, quality of work, use of time, attendance and cooperation. Based on the analysis of the study showed that the level of emotional intelligence includes self-awareness, self-regulation, motivation, empathy and social skills. is high. This is because the members feel that these factors may spur them to work better. This means for the future of emotional intelligence can be maintained optimally. While the results of the analysis to include the performance level of the quantity of work, quality of work, use of time, attendance and cooperation. is high. This is because the members were able to respond to every job they do. So in the end created a feeling to do their best to force Air Squadron 1

Use of instantaneous profile and statistical methods to determine permeability functions of unsaturated soils

This paper presents the determination of permeability functions by direct and indirect methods. The direct method used in this study was the instantaneous profile method, while the indirect method used was the statistical method. The instantaneous profile method was adopted to calculate permeability functions of residual soils used in laboratory slope models. Pore-water pressure measured using tensiometers along the slope models and independently measured soil-water characteristic curves (SWCCs) were used for the instantaneous profile calculation. To obtain a continuous permeability function, the instantaneous profile results were then fitted using the statistical method.Accepted versio

Effects of different drying rates on shrinkage characteristics of a residual soil and soil mixtures

This paper presents the experimental results of shrinkage tests using small cylindrical specimens. The shrinkage tests were performed to study the shrinkage characteristics of a residual soil and mixtures of residual soil and fine sand under three different drying rates. Small cylindrical specimens were dried under ambient conditions, under an accelerated evaporation using a fan, and under an accelerated evaporation using a lamp. The shrinkage curves of the soils were obtained by measuring the dimensions and the mass of the specimens periodically. The results of the experiments showed that the rates of changes in void ratio and degree of saturation of the soils were highly affected by the evaporation rates. However, the shrinkage curves of the soils, which is a plot of void ratio (e) versus water content (i.e., w · Gs, which is the product of gravimetric water content and specific gravity), was not affected by the drying rates. An identical shrinkage curve was obtained for the same soil under different drying rates. Similarly, the relationship between void ratio and matric suction for the same soil under different drying rates was also identical. It can be concluded that void ratio of the investigated residual soil and soil mixtures is a unique function of matric suction in the soil during drying process under zero net confining pressure.Accepted versio

The design of Subsea foundations subject to general cyclic loading using a massively scalable web based application

Subsea developments require the design of large numbers of shallow skirted foundations to support structures such as manifolds, pipeline and umbilical terminations and in-line tees. Safe and economic design relies on the accurate assessment of foundation capacity against thousands of load-combinations. Performing these design calculations is a significant computational task. The objective of this paper is to demonstrate how new developments in cloud computing can be utilized to optimize foundation design.Engineering design is no longer limited by computing power thanks to the introduction of low-cost on-demand cloud computing platforms. This paper describes a massively scalable cloud based application for rapidly assessing the vertical-horizontal-moment-torsional capacity of shallow skirted foundations against thousands of cyclic load case combinations that arise from numerous environmental and service conditions. The detrimental effect of cyclic loading and the beneficial effect of consolidation on soil strength are incorporated within a single workflow.It is shown that cloud technologies can radically improve traditional engineering design procedures, allowing engineers to focus on the innovative and creative aspects of their work, while the tasks of preparing, executing and documenting calculations become near instantaneous and more easily assessed for quality assurance. More critically, the technology allows rapid and rigorous optimization of the foundation dimensions to achieve the most cost-effective solution that satisfies all load cases. The scalability of the application allows multiple users to run large numbers of calculations simultaneously across a virtually unlimited number of computer nodes. The system can be accessed through a standard web browser and can run simulations on any internet-connected device. Results are saved in the cloud and can be accessed anywhere and shared among colleagues, enhancing collaboration and quality assurance. The approach results in demonstrably superior design outcomes, achieved more quickly.This paper presents what is believed to be the world's first web based application for shallow foundation design that exploits the availability of low cost on-demand cloud computing services. The paper will explain some of the challenges in implementing such a system and provide examples. We believe this type of technology represents the future for geotechnical design work, providing better design in a more efficient manner.<br/