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Evi Aprianti
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International Association of Lowland Technology In Collaboration with Hasanuddin University and Saga University Address Faculty of Engineering, Center of Technology Building, 1st Floor Jalan Poros Malino km. 6, Bontomarannu, Gowa Indonesia Postal Code: 91711
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Lowland Technology International
Published by International Association of Lowland Technology
ISSN : 13449656     EISSN : 21878870     DOI : https://doi.org/10.0001/ialt_lti
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
The Lowland Technology International Journal presents activity and research developments in Geotechnical Engineering, Water Resources Engineering, Structural Engineering, Transportation Engineering, Urban Planning, Coastal Engineering, Disaster Prevention and Mitigation Engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 7 Documents
 1 
Search results for , issue "Vol 19 No 1, June (2017)" : 7 Documents clear
Three dimensional (3D) failure pattern of flexible pile due to lateral cyclic loading in sand M. F. Awad-Allah; N. Yasufuku; S. Manandhar
Lowland Technology International Vol 19 No 1, June (2017)
Publisher : International Association of Lowland Technology

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Abstract

In this paper, a set of small-scale laboratory single flexible pile model was conducted in a medium dense Toyoura sand environment under the effect of cyclic lateral loads. Digital images were captured for the plastic deformations of the soil during the lateral loading from the top of the testing chamber. Combination of photo image analysis and analytical cyclic p-y curve methods was implemented for estimating the three dimensional (3D) failure zone adjacent to pile shaft. The 3D failure pattern of the soil around single pile shaft was investigated through two steps, including: (1) determination of the range of lateral plastic deformations at the top of ground surface in perpendicular and parallel directions of cyclic loads; and (2) determination of the point of rotation (zero displacement) along the pile shaft. Experimental results showed that a conical passive zone of plastic deformations is established around pile shaft due to applying two-way lateral cyclic loading at pile head. Based on the findings, design considerations for piles subjected to lateral cyclic loading have been introduced.
Effect of bamboo leaf ash addition in cemented bamboo chipssand soil mixture S. Ismanti; N. Yasufuku
Lowland Technology International Vol 19 No 1, June (2017)
Publisher : International Association of Lowland Technology

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Abstract

Utilization of natural materials as a solution to the problems in the geotechnical engineering field has been widely developed. It is necessary to reduce the utilization of cement due to its production contributes to high CO2 emission to the environment. Selection of the natural material considers the potential of availability and workability. Bamboo, as one of the natural resources, is easy to obtain due to its ability to grow in varying conditions. In the form of bamboo chips and bamboo leaf ash, there are high water absorbability and pozzolanic content, respectively. Effect of bamboo materials addition in the mixture to the mechanical properties was investigated. Many variations in the mixture were performed to determine the effect of cement replacement by bamboo material. Aspect of geo-environment becomes the main goal of this study through the utilization of natural materials in soil improvement. Furthermore, the environmental impact by material addition can be investigated by life cycle assessment.
Hydrological assessment using stable isotope fingerprinting technique in the Upper Chao Phraya river basin A. Putthividhya; J. Laonamsai
Lowland Technology International Vol 19 No 1, June (2017)
Publisher : International Association of Lowland Technology

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Abstract

This study is focusing to assess the spatial and temporal distribution of rainfall using water stable isotope technique as well as the surface water-groundwater interactions for the aquifer systems in the Upper Chao Phraya river basin systems. Local precipitation, surface water, and groundwater along the main river courses and their tributaries are directly samples. Massive precipitation isotopic composition database from existing IAEA monitoring network (GNIB) along with local Bangkok precipitation isotopic signature are compared with precipitation from Chiang Mai province to better identify the rainfall isotopic compositions. In addition to the isotopic differentiation of precipitation in the area, its impacts on isotopic characteristics of surface water and groundwater are additionally explored. LMWLs (Local Meteoric Water Line) for local rainfall in Bangkok and Chiang Mai are generated with some seasonal variation due to rain out effect. Surface water is influenced by evaporation at some degree, revealing that rainfall may not be the primary source of surface water. Yom river’s isotope values are far more D and 18O-enriched compared to Ping’s and Nan’s, suggesting the mixing of groundwater with river water and/or the source of surface water may come from dry-period precipitation. Stable oxygen and hydrogen isotopes in groundwater fall on an evaporation line, and are thus indicative of the effects of high evaporation rates through the top surficial material. The isotopic similarity with the more depleted GD and G18O of groundwater samples suggests the potential mixing of groundwater with river water by different mixing processes (54% from river water and 46% from rainfall). The results show correlations in the isotope signature of shallow (< 50 m deep) and deeper aquifer (> 50 m deep) which may be associated with hydraulic connection and/or similar hydrogeological conditions. d-excess stable isotope analyses are beneficial to identify the relative contributions of the wet and dry seasonal sources to the groundwater recharge. The results indicate that groundwater sources are composed of a 71.4% wet seasonal sources and a28.6% dry seasonal sources.
Characterization based on-street parking management in shopping area of a developing country: A study of Dhaka New Market, Bangladesh F. Reza; A. N. Kakon; K. A. Asad
Lowland Technology International Vol 19 No 1, June (2017)
Publisher : International Association of Lowland Technology

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Abstract

This study identifies the on-street parking characteristics of Dhaka New Market, a shopping area of Bangladesh. Parking usage survey by patrol was conducted both on weekday and weekend to find out the parking characteristics. The analysis of parking patrol survey data demonstrates that parking accumulation, volume, load and index are much higher at the weekend which indicates raised parking demand than that of weekday. As existing parking supply fail to accommodate higher parking demand spill-over parking is being encouraged and consequently traffic congestion, obstruction to pedestrian movement and bus stop zone have been created. Parking space inventory survey and user opinion survey were also conducted to recognize on-street parking induced problems and to adopt some policy measures in these regards.
Impacts of ideological trends of renaissance architecture on royal garden design of Qing Dynasty, China: a Lowland and Wetland case of the Old Summer Palace (Yuan Ming Yuan) X. M. Zhao; Y. Lu; J. R. Shi; H. Liu; Y. Chen; Z. Wang; K. Hokao
Lowland Technology International Vol 19 No 1, June (2017)
Publisher : International Association of Lowland Technology

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Abstract

Planning and design methodology of residential areas in ancient time is a comprehensive transition of technology and aesthetics, where imperial palatial projects play an exemplary role. Through the process of the Age of Discovery, European culture infiltrated into China's architectures, especially the royal gardens and palaces in Qing Dynasty. Ideological trends of Renaissance architecture present a diverse phenomenon into Chinese palace design of Yuan Ming Yuan. The Old Summer Palace buildings were analyzed in terms of their components such as column, dome, sculpture and decoration, door and wall, the proportion of elements, etc. The results prove that the cultural phenomenon is a convergence of and technology and aesthetics between European and Chinese.
Mitigations of flooding and soil erosions Geo-Disasters in Thailand and Laos due to climate change: From Mountains to Lowlands D. T. Bergado; S. Chaiyaput; P. Voottipruex; T. Hino; N. Chanmee
Lowland Technology International Vol 19 No 1, June (2017)
Publisher : International Association of Lowland Technology

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Abstract

In 2011, Thailand has suffered from devastating flooding due to climate change. During this time, 2 typhoons from the Pacific area went straight across Vietnam to Northern Laos and Northern Thailand instead of the usual path to Taiwan and Japan. Subsequently, huge flooding damaged many infrastructures and overtopped flood protection dikes of many industrial estates and educational institutions in the Central Plain of Thailand such as at Hi-Tech Industrial Estate, Bang Pa- In Industrial Estate, Navanakorn Industrial Estate and Asian Institute of Technology, to name a few. The same phenomenon also occurred in neighboring Laos PDR which caused unusually heavy rains and widespread river flooding. Consequently, riverbank erosions accompanied by slope failures occurred at Xedon River in Pakse, Southern Laos due to saturation caused by high water levels accompanied by high velocity flow of the flooded river. To evaluate the stability of these mitigation structures, finite element and limit equilibrium methods were utilized. PLAXIS 2D software was used to analyze the slope protection schemes at low and high water levels incorporating the various supporting and reinforcing materials. Moreover, the PLAXIS 2D software was also utilized to predict the vertical deformations of improved flood control dikes with increased embankment height at different cases of flood water levels. In addition, the SLIDE software was used to predict the factor of safety by using limit equilibrium method for the various riverbank erosion protection structures. Furthermore, RESSA software was utilized to evaluate the slope stability of the erosion protection structures with geosynthetic reinforcements of Xedon riverbank in Pakse combined with gabions and mattresses. Laos PDR is mountainous with high elevations.
Bugis local wisdom in the housing and settlement form: An architectural anthropology study A. Akil; W. W. Osman
Lowland Technology International Vol 19 No 1, June (2017)
Publisher : International Association of Lowland Technology

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Abstract

This study discusses the Bugis local wisdom in the housing and settlements form as part of efforts to strengthen the nation character. This study aims to discover the manifestation of Bugis cultural values in the housing and settlement form. Nowadays, It is considered important in effort to realize the planning and design of housing and settlements based on culture that can meet needs of life quality. This study is a qualitative research method that uses anthropologicalarchitecture by looking at the information units in the culture form and its relevance to the realization of housing and settlements. The data collected both qualitative and visual spatial, and then analyzed using Spradley through in-depth interviews, observation, and literature review. This study found that local wisdom of Bugis community are loaded with symbolicphilosophical meaning, among others: Bugis cultural values to the modern era is still alive; the values of Siri’, Were, and Pesse are based on the siri' na pesse value has manifested in the housing and settlements form, includes typical form of settlement space patterns, street patterns, building orientation, building form, commercial building form, and building layout.

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