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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 2, Sep (2017)" : 7 Documents clear
Laterallyloaded piles in multi-layered soils M. Cao
Lowland Technology International Vol 19 No 2, Sep (2017)
Publisher : International Association of Lowland Technology

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Abstract

The paper presents a rigorous analytical method, using the theory of the transfer matrix method for calculating the laterally loaded piles in multi-layered soils. Following the technique proposed by Muki and Sternberg, the problem is decomposed into extended layered soils and a fictitious pile characterized respectively by Young’s moduli of the layered soils and those of the differences between the piles and the layered soils. The unknown bending moments along the fictitious pile are determined by solving a Fredholm integral equation of the second kind, which imposes the compatibility condition that the lateral displacements of the fictitious pile are equal to those corresponding to the centroidal axe of the extended layered soils. The pile lateral displacement and slope distributions can be calculated based on the determined fictitious pile bending moment distribution. Selected results from parametrical studies are presented to confirm the validity of the proposed approach and to portray the influence of the governing parameters on the pile bending moment, displacement and slope distributions.
Settlement-time curve calculation of soil-cement column and slab improved soft clay deposit S. Pongsivasathit; P. Voottipruex; J.C. Chai
Lowland Technology International Vol 19 No 2, Sep (2017)
Publisher : International Association of Lowland Technology

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Abstract

The consolidation behavior of soft clayey deposit improved by a floating soil-column with a cement stabilized slab on the ground surface has been investigated by laboratory model test using a symmetric unite cell model and finite element analysis (FEA). The effects of thickness and undrained shear strength of slab on the relative penetration of column into surrounding soil were quantified. Based on the results, the method proposed Pongsivasathit et al. for calculating the settlement of a floating column improved soft subsoil has been modified. The main modification is the equation for calculating the value of Hc, which is the thickness of a soil layer at the bottom of the column improved zone. And in settlement calculation, Hc layer has been treated as an unimproved layer. The effectiveness of proposed method has been verified by comparing with the measurement results of field case histories and laboratory model tests.
Methods for delineating the land leveling range in land consolidationand rehabilitationprojects D.J. Zhang; S.P. Yuan; W. Peng; F.F. Yu
Lowland Technology International Vol 19 No 2, Sep (2017)
Publisher : International Association of Lowland Technology

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Abstract

Although elevation surveying has been widely used in land consolidation and Rehabilitation projects in China, the delineation of land leveling range still mainly depends on a person's subjective decision and therefore suffers from a lack of scientific criteria. Spatial analysis based on GIS is applied to provide a quantitative foundation for land leveling. Firstly, a grid map of DEM is obtained through spatial interpolation using elevation data; secondly, DEM data is disposed by two different methods based on sliding window arithmetic, i.e., neighborhood analysis method and local singularity analysis technique; at last, the range for land leveling is delineated by using these two methods respectively. This research shows that both methods can effectively identify the land leveling area with little differences and thus they could be used as quantitative tools for the planning and design of land levelling in land consolidation and Rehabilitation projects
Color research of rural tourism destination based on chromatographic analysis: A lowland case study of Hangzhou Meijiawu Village X.M. Zhao; J.W. Lin; Y.X. Lei; Y. Chen; J.R. Shi; Z. Wang; K. Hokao
Lowland Technology International Vol 19 No 2, Sep (2017)
Publisher : International Association of Lowland Technology

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Abstract

Good color for rural planning not only brings comfortable living environment, creates an impressive image, but also is conducive to the color context of inheritance and to reserve the unique style. At present, there is not much research on rural color planning in rural country, so this paper chose the rural tourism destination, Meijiawu Village, as a case. and it analyzed the color of the village by using qualitative and quantitative methods. On the basis of tourists' perception of Meijiawu colors, this paper proposed several optimization suggestions about the various types of color and material color by extracting the chroma, lightness and saturation information, including the mass-tone attune (building facade, plant color), auxiliary color (the color of roof, doors, windows and other components, facade color), embellishment color (the color of signs, other colors) and 7 class material colors.
Study of domestic wastewater (Greywater) in the district of Tamalanrea the city of Makassar R. Ibrahim
Lowland Technology International Vol 19 No 2, Sep (2017)
Publisher : International Association of Lowland Technology

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Abstract

Greywater problem is the environmental issues that have not received much attention from the public and the government. Greywater is one of the main sources of water pollution that needs to be managed properly. This study aimed to describe the characteristics and greywater management system that is understood and applied by communities in urban settlements through case Tamalanrea District of the Makassar city in Indonesia. The results can then be used as a basis in determining a solution for the management and treatment of greywater. Data were obtained from field observation and interview techniques using a questionnaire. Samples were collected from the outlet pipe greywater disposal of household and the combined channel in residential areas, and then analyzed in laboratory. The results showed that the parameters of pH, BOD, COD and TSS greywater of community settlements in the District Tamalanrea largely exceeded the threshold of environmental quality standards. While the greywater management system held separately from blackwater in a way to flow into the drainage channel without being processed first. The management conditions provide convenience in greywater treatment efforts so that it can be reused. In addition, it can reduce environmental pollution and increase the availability of groundwater.
Land-use and road development pattern of downtown makassar since 19th century until now A. Akil
Lowland Technology International Vol 19 No 2, Sep (2017)
Publisher : International Association of Lowland Technology

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Abstract

The study aims to determine the development of land use and road patterns in downtown Makassar since 19th century and its influencing factors. The study intends to provide an understanding of the growth and development direction of the city based on the history, to figure out the factors which later can be used as a basis of coastal city planning policy. The collection of information obtained by observation, in-depth interviews, and referring to the city development history. The data were analyzed using GIS-based spatial technique and qualitative analysis to determine factors that affect urban development. The study found that land uses such as residential, trade/services, port, and social facilities have been developing dynamically in the downtown Makassar until nowadays. These phenomenon lead to subsiding or disappearance of other land uses such as paddy fields, township, gardens, open spaces, grave, and jail. The development ware strongly influenced by the dynamics of economic development, science, and urban technology, especially on trade and settlement facilities. The direction of urban development is dominant to the East and South due to the availability of vacant land and access to hinterland. Similarly, the development of roads in the downtown area also occurs dynamically as the loss of some roads as a result of infrastructure and housing construction. It is strongly associated with urban urbanization process due to the modernization. Facing that, it is necessary to maintain urban heritage strategy among others: actualization of local wisdom and heritage, involving each ethnic in development, revitalizing area based on history and culture, and area management.
Correlations of SPT and DCPT data for sandy soils in Ghana K.O. Opuni; S.O. Nyako; B. Ofosu; F.A. Mensah; K. Sarpong
Lowland Technology International Vol 19 No 2, Sep (2017)
Publisher : International Association of Lowland Technology

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Abstract

Standard penetration test (SPT) is the most commonly used insitu test for site investigations and foundation design with wellestablished correlations between the SPT and soil properties. However for simple structures in developing countries the SPT is considered uneconomical. The dynamic cone penetration test (DCPT) is a rapid inexpensive field test that can be used to determine the material properties of soils. In this study the two in-situ tests are carried out side by side in sandy soils and a correlation of the DCPT results with SPT results and allowable bearing capacity investigated. The results indicate that the relation between the results of the two in-situ tests is linear for sandy soils. The local DCPT – SPT and DCPT – allowable bearing capacity correlations obtained compare well with those in literature.

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