1) The document analyzes the seismic behavior of municipal solid waste landfills with and without geosynthetic reinforcement layers through one-dimensional dynamic response analysis.
2) It finds that the inclusion of geosynthetic reinforcements significantly reduces the amplification of peak ground acceleration and spectral acceleration values at the top of landfills built on rock and stiff soil, with less reduction observed for soft soil conditions.
3) The analysis is conducted using the SHAKE2000 computer program to model landfill profiles up to 30 meters tall under earthquake motions scaled from 0.1g to 0.4g recorded during the 2001 Bhuj earthquake.
forms and distribution of potassium along a toposequence on basaltic soils of...IJEAB
The study was conducted in Vom, Jos Plateau state in the Southern Guinea Savanna zone of Nigeria to accentuate the forms of potassium distribution associated with topographic positions. The study area lies between longitudes 080 45’ 01” and 80 47’ 56’’ E, latitudes 90 43’ 17’’ and 90 45’ 15’’ N, with an elevation of about 1270m above sea level. A stratified purposive sampling procedure was adapted, where four landscape positions were identified using Global Positioning System (GPS). The crest, upper slope, middle, and lower slope positions were identified, each representing changes in geomorphology. Two pedons were georeferenced at each topographic position, where they were sunk and described. Result show that the forms of K varied with topographic positions. Potassium distribution varied from surface to subsurface in different topographic positions. Water soluble K was higher at crest surface (0.0569 cmolkg-1) and decreased with soil profile depth. Exchangeable K has highest value of 0.1317 and 0.1308 cmol/kg-1 at both lower slope positions in general. Non exchangeable K values where higher at all surfaces than the subsurfaces of topographic positions. HCl soluble K values were higher at lower and upper slopes surface, moderately at middle and least at crest slope positions. Total K values were higher at upper slope subsurface, middle, and lower slope surface with low variations at the crest positions. However, the distribution of the K forms did not shown a well – defined trend with respect to topographic positions.
forms and distribution of potassium along a toposequence on basaltic soils of...IJEAB
The study was conducted in Vom, Jos Plateau state in the Southern Guinea Savanna zone of Nigeria to accentuate the forms of potassium distribution associated with topographic positions. The study area lies between longitudes 080 45’ 01” and 80 47’ 56’’ E, latitudes 90 43’ 17’’ and 90 45’ 15’’ N, with an elevation of about 1270m above sea level. A stratified purposive sampling procedure was adapted, where four landscape positions were identified using Global Positioning System (GPS). The crest, upper slope, middle, and lower slope positions were identified, each representing changes in geomorphology. Two pedons were georeferenced at each topographic position, where they were sunk and described. Result show that the forms of K varied with topographic positions. Potassium distribution varied from surface to subsurface in different topographic positions. Water soluble K was higher at crest surface (0.0569 cmolkg-1) and decreased with soil profile depth. Exchangeable K has highest value of 0.1317 and 0.1308 cmol/kg-1 at both lower slope positions in general. Non exchangeable K values where higher at all surfaces than the subsurfaces of topographic positions. HCl soluble K values were higher at lower and upper slopes surface, moderately at middle and least at crest slope positions. Total K values were higher at upper slope subsurface, middle, and lower slope surface with low variations at the crest positions. However, the distribution of the K forms did not shown a well – defined trend with respect to topographic positions.
Influence of stratified soil on seismic response of pile supported buildingIJARIIT
In the last few decades, it has been perceived that Soil Structure Interaction (SSI) changed the reaction attributes of
a structural system due to huge and firm nature of structure and frequently, soil softness. In the current study, to depict the
influence of soil structure interaction on the seismic response of a structure due to earthquake loading, a 5 storied (G+4)
simple square building supported on pile foundation resting on stratified soil was selected. The building sections were
modelled and analysed for different configurations (i.e., with and without slab and infill) using finite element method
SAP2000. The deformations under seismic loading in the structure and piles by incorporating the effect of soil-structure
interaction and fixed base condition were extracted, compared and discussed. Impact of variety of the parameters on different
soil conditions like variation in soil profile and number of soil layers, influence of slab and infill are considered for which the
buildings are modelled by alternate approaches, namely, (1) bare frame with fixed supports, (2) frames including slab and
infill with support accounting for soil-flexibility. The results indicate that the roof displacement varies significantly for
different soil layer combinations if included the soil structure interaction compared to that of fixed base analysis. Thus
considering the effect of SSI is essential. The horizontal displacement of the structure is maximum for a bare frame with slab
when compared to bare frame and infill frame. When infill wall is added to the structure, the horizontal displacement is
decreased due to the stiffness of the infill wall.
ASSESSMENT OF LIQUEFACTION POTENTIAL OF SOIL USING MULTI-LINEAR REGRESSION MO...IAEME Publication
The Standard Penetration Test (SPT) is the most widely used in-situ test throughout the world for subsurface geotechnical investigation and this procedure have evolved over a period of 100 years. Estimation of the liquefaction potential of soils is often based on SPT test. Liquefaction is one of the critical problems in the field of Geotechnical engineering. It is the phenomena when there is loss of shear strength in saturated and cohesion-less soils because of increased pore water pressures and hence reduced effective stresses due to dynamic loading. In the present study, SPT based data were analysed to find out a suitable numerical procedure for establishing a Multi-Linear Regression Model using IBM-Statistical Package for the Social Sciences (IBM SPSS Statistics v20.0.0) and MATLAB(R2010a) in analysis of soil liquefaction for a particular location at a site in Lucknow City. A Multi-Storeyed Residential Building Project site was considered for this study to collect 12 borehole data sets along 10 km stretch of IIM road, Lucknow, Uttar Pradesh (India).
Geomatics Based Landslide Vulnerability Zonation Mapping - Parts Of Nilgiri D...IJERA Editor
Landslide includes a wide range of ground movements, such as rock falls, deep failure of slope, and shallow debris flows. Although gravity acting on an over steepened slope is the primary reason for a landslide. The Nilgiri Hills (Mountains) of Tamil Nadu, India are prone to landslides, which often result in considerable damage to private property, public infrastructure, and loss of life. The mapping of LVZ includes, the preparation of various thematic layers from different data sources, such as Survey of India topographic sheets, Satellite data, Geological Survey of India maps etc. These landslides are typically the result of the structural failure of thick laterite soils that have been saturated by heavy rains during the monsoon season. . GIS have proved to be useful tools for analyzing and managing landslide related data. GIS has been widely used in quantitative estimation landslide susceptibility. The methodology adopted for the identification of landslide vulnerable zones, and suggestion of remedial measures based on the vulnerability of landslides on different terrain parameters per unit area. Through this study, it is evinced again that the geomatics technology is a proven tool for landslide studies in order to properly understand, identify and suggest remedial measures.
Effect of soil structure interaction on high rise r.c regular frame structur...eSAT Journals
Abstract Reinforced concrete building structure consist of horizontal member (beam & slab) and vertical members (columns & walls), and supported by foundation. The structure is subjected to loads of self-weight, live load, wind load and earthquake load etc. The structural strength of slab and the brick walls is not normally considered in the analysis of the structure Generally the foundation support is assumed as either hinged or fixed support, while foundations transmit the load to the soil medium which undergoes a settlement (vertical) depending on the loads from the structure and characteristics of the soil medium, causing the additional forces in structure. However, this effect is normally neglected in the structural analysis due to its complicated analysis. An attempt is made to analyze the structure considering the foundation soil settlement as define like soil medium by spring. The structure is analyzed for various seismic zones of India. (II, III, IV,&V), sub grade modulus of soil (Gs) from 12000kN/m3 to 60,000kN/m3.The results of the above analysis are used to study the effect of soil – structure interaction on horizontal displacement ‘훿x’ at each floor, and vertical displacement ‘훿y’ at the supports of a building. From the study, it is observed that the maximum percentage of variation in x- trans is 337 percentage with respect to fixed support condition at sub grade modulus of 12,000 kN /m2/m at seismic zone V and the maximum percentage of variation in y- trans is 1420 percentage with respect to fixed support at sub grade modulus 12,000 kN/m2/m at seismic zone V. From pilot study, concluded that effect of soil – structure interaction has to consider especially for lower sub grade modulus of soil at higher seismic intensities. KeyWords: Soil structure interaction (SSI), R.C.frame, Seismic load, High rise buildings etc…
Influence of stratified soil on seismic response of pile supported buildingIJARIIT
In the last few decades, it has been perceived that Soil Structure Interaction (SSI) changed the reaction attributes of
a structural system due to huge and firm nature of structure and frequently, soil softness. In the current study, to depict the
influence of soil structure interaction on the seismic response of a structure due to earthquake loading, a 5 storied (G+4)
simple square building supported on pile foundation resting on stratified soil was selected. The building sections were
modelled and analysed for different configurations (i.e., with and without slab and infill) using finite element method
SAP2000. The deformations under seismic loading in the structure and piles by incorporating the effect of soil-structure
interaction and fixed base condition were extracted, compared and discussed. Impact of variety of the parameters on different
soil conditions like variation in soil profile and number of soil layers, influence of slab and infill are considered for which the
buildings are modelled by alternate approaches, namely, (1) bare frame with fixed supports, (2) frames including slab and
infill with support accounting for soil-flexibility. The results indicate that the roof displacement varies significantly for
different soil layer combinations if included the soil structure interaction compared to that of fixed base analysis. Thus
considering the effect of SSI is essential. The horizontal displacement of the structure is maximum for a bare frame with slab
when compared to bare frame and infill frame. When infill wall is added to the structure, the horizontal displacement is
decreased due to the stiffness of the infill wall.
ASSESSMENT OF LIQUEFACTION POTENTIAL OF SOIL USING MULTI-LINEAR REGRESSION MO...IAEME Publication
The Standard Penetration Test (SPT) is the most widely used in-situ test throughout the world for subsurface geotechnical investigation and this procedure have evolved over a period of 100 years. Estimation of the liquefaction potential of soils is often based on SPT test. Liquefaction is one of the critical problems in the field of Geotechnical engineering. It is the phenomena when there is loss of shear strength in saturated and cohesion-less soils because of increased pore water pressures and hence reduced effective stresses due to dynamic loading. In the present study, SPT based data were analysed to find out a suitable numerical procedure for establishing a Multi-Linear Regression Model using IBM-Statistical Package for the Social Sciences (IBM SPSS Statistics v20.0.0) and MATLAB(R2010a) in analysis of soil liquefaction for a particular location at a site in Lucknow City. A Multi-Storeyed Residential Building Project site was considered for this study to collect 12 borehole data sets along 10 km stretch of IIM road, Lucknow, Uttar Pradesh (India).
Geomatics Based Landslide Vulnerability Zonation Mapping - Parts Of Nilgiri D...IJERA Editor
Landslide includes a wide range of ground movements, such as rock falls, deep failure of slope, and shallow debris flows. Although gravity acting on an over steepened slope is the primary reason for a landslide. The Nilgiri Hills (Mountains) of Tamil Nadu, India are prone to landslides, which often result in considerable damage to private property, public infrastructure, and loss of life. The mapping of LVZ includes, the preparation of various thematic layers from different data sources, such as Survey of India topographic sheets, Satellite data, Geological Survey of India maps etc. These landslides are typically the result of the structural failure of thick laterite soils that have been saturated by heavy rains during the monsoon season. . GIS have proved to be useful tools for analyzing and managing landslide related data. GIS has been widely used in quantitative estimation landslide susceptibility. The methodology adopted for the identification of landslide vulnerable zones, and suggestion of remedial measures based on the vulnerability of landslides on different terrain parameters per unit area. Through this study, it is evinced again that the geomatics technology is a proven tool for landslide studies in order to properly understand, identify and suggest remedial measures.
Effect of soil structure interaction on high rise r.c regular frame structur...eSAT Journals
Abstract Reinforced concrete building structure consist of horizontal member (beam & slab) and vertical members (columns & walls), and supported by foundation. The structure is subjected to loads of self-weight, live load, wind load and earthquake load etc. The structural strength of slab and the brick walls is not normally considered in the analysis of the structure Generally the foundation support is assumed as either hinged or fixed support, while foundations transmit the load to the soil medium which undergoes a settlement (vertical) depending on the loads from the structure and characteristics of the soil medium, causing the additional forces in structure. However, this effect is normally neglected in the structural analysis due to its complicated analysis. An attempt is made to analyze the structure considering the foundation soil settlement as define like soil medium by spring. The structure is analyzed for various seismic zones of India. (II, III, IV,&V), sub grade modulus of soil (Gs) from 12000kN/m3 to 60,000kN/m3.The results of the above analysis are used to study the effect of soil – structure interaction on horizontal displacement ‘훿x’ at each floor, and vertical displacement ‘훿y’ at the supports of a building. From the study, it is observed that the maximum percentage of variation in x- trans is 337 percentage with respect to fixed support condition at sub grade modulus of 12,000 kN /m2/m at seismic zone V and the maximum percentage of variation in y- trans is 1420 percentage with respect to fixed support at sub grade modulus 12,000 kN/m2/m at seismic zone V. From pilot study, concluded that effect of soil – structure interaction has to consider especially for lower sub grade modulus of soil at higher seismic intensities. KeyWords: Soil structure interaction (SSI), R.C.frame, Seismic load, High rise buildings etc…
Comparative analysis of direct and four indirect methods for determination of...eSAT Journals
Abstract
This study focused on comparative analysis of five widely used methods for determining evapotranspiration, namely, Weighing lysimeter, Pan Evapotranspiration, Blaney – Morin Nigeria, Blaney – Criddle and Modified Hargreaves – Samani methods. Each of the five methods was used to estimate crop evapotranspiration of waterleaf (Talinum triangulare) in Umudike, Southeast Nigeria. The efficacy of these evapotranspiration methods is evaluated by comparing them with the Weighing lysimeter(direct method), which provides the most reasonable estimation of evapotranspiration and is one of the most reliable methods. The crop was irrigated daily and the daily data generated from the lysimeter were used to calculate the crop evapotranspiration (ETc) between the months of November/ December, 2013. Climatic data obtained for the same period were used to determine the crop evapotranspiration (ETc) using the Pan Evapotranspiration, Blaney – Morin Nigeria, Blaney – Criddle and Modified Hargreaves – Samani methods. The total crop evapotranspiration from the Lysimeter between November and December was 148.69 mm, while that of Pan Evapotranspiration (PE), Blaney – Morin Nigeria (BMN), Blaney – Criddle (BC) and Modified Hargreaves – Samani (MHS) were 152.42 mm, 151.22 mm, 147.76 mm and 135.58 mm, respectively. Test of hypothesis using z-Test indicates that there was no significant difference between the mean of the ET by lysimeter and that of each of the other four methods (Blaney - Criddle, Pan Evapotranspiration, Modified Hargreaves - Samani and Blaney - Morin Nigeria) as z-cal < z-critical at 5% level of significance for the crop growth period of 8th November to 12th December, 2013.
Keywords: Comparative analysis, Evapotranspiration methods, Crop evapotranspiration, Hydrologic cycle, Lysimeter
CHARACTERISTICS OF THE LEACHATE FROM MSW LANDFILL,BANGALORE Dr. Naveen BP
Bangalore city generates about 4,500 metric tons of municipal solid waste every day in that 75% is disposed in the landfill. The landfill leachate discharge may lead to serious environmental problems. Leachate may percolate through landfill liners and subsoil causing pollution of ground water and surface waters resources. The aim of this research study is to identify the characteristics of the leachate from landfill in Mavallipura. Landfill leachate contains various pollutants that can be categorized into four groups such as dissolved organic matter, inorganic macrocomponents, heavy metals, and organic compounds. The pH of the leachate is considered as alkaline as the pH is 7.6 in Mavallipura landfill leachate. The results showed that the highest metal concentration that exists in the leachate was Iron which is about of 12 ppm. BOD
and COD of the leachate are 1500 mg/L and 10400 mg/L, respectively. The leachate characteristics indicate favourable growth of algae in natural water contaminated with leachate with the alkaline condition and with the presence of magnesium as nutrient, which has been confirmed in the nearby surface pond.
Liquefaction Analysis of Kakinada Region by Using Geotechnical Borehole Dataiosrjce
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of mechanical and civil engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mechanical and civil engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Identification Of Soil Erosion Prone Zones Using Geomatics Technology In Part...IJERA Editor
Soil erosion is the removal and subsequent loss of soil by the action of water, ice, wind and gravity. Soil erosion is a process that occurs naturally at a slow rate. The average natural geologic rate of soil erosion is approximately 0.2 tons per acre per year. Erosion is the process were by the earth or rock is loosened or dissolved and removed from any part of earth‟s surface. Geological erosion is the rate at which the catchment or land would normally be eroded without any disturbance by human activity. If man alters the natural system by means of various land use practices that is caused accelerated erosion. The present study area is covering Parts of North Arcot The area is lies between E78°30'-E78°45' lattitudes N12°15'-N12°30„. The total aerial extent of the study area is 720 sq.km. It falls in the survey of India Toposheet 58 L11 on 1:50,000 scale. The IRS – 1D satellite imagery data were subjected to different types of image enhancement techniques and soil erosion areas were mapped out and GIS databases were generated showing the soil erosion areas using Arc Map 9.1 version. GIS overlay function was executed between soil erosion prone areas and the various controlling variables and the area has been fragmented into a number of polygons of land segments depending upon the controlling variables. Finally, the remedial measures were suggested for each land segment according to the controlling variables.
Seismic Analysis of Structures under Different Soil ConditionsIJERA Editor
In India, multi-storied buildings are usually constructed due to high cost and scarcity of land. In order to utilize maximum land area, builders and architects generally propose asymmetrical plan configurations. These asymmetrical plan buildings, which are constructed in seismic prone areas, are likely to be damaged during earthquake. Earthquake is a natural phenomenon which can generate the most destructive forces on structures. Buildings should be made safe for lives by proper design and detailing of structural members in order to have a ductile form of failure. The concept of earthquake resistant design is that the building should be designed to resist the forces, which arises due to Design Basis Earthquake, with only minor damages and the forces, which arises due to Maximum Considered Earthquake, with some accepted structural damages but no collapse. This project report comprises of seismic analysis and design of an five-storied R.C. building with asymmetrical plan in different soil conditions. The building is modelled as a 3D space frame with six degrees of freedom at each node using the software SAP2000 v 14. Building is analyzed using Response Spectrum method. The Response Spectra as per IS 1893 (Part 1): 2002 for rocky or hard soil and soft soil is used. Dynamic response of a structure resting on soft soils in particular, may differ substantially in amplitude and frequency content from the response of an identical structure supported on a very stiff soil or rock. However, data on many failure examples of rigid structures resting on flexible soils and intensive analytical studies in recent years have made considerable advances in the field of soil-structure interaction and analytical techniques are now available. This interaction phenomenon is principally affected by the mechanism of energy exchanged between soil and the structure. Considering the soil – structure interaction effect which is mainly due to the fact that buildings with high stiffness on loose soils behave differently. Base shears have shown significant variation with high values for structures resting on loose soils and low values in case of hard rock. This attributes mainly due to more absorbing energy capacity of soils when compared to rock materials
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Effect of CO2 sequestration on soil liquefaction in geological pitsijiert bestjournal
This paper deals with review of the previous related research on evaluation of soil liquefaction due to Carbon sequestration by various Carbon Capture Sequestration processes in geological pits. It provides critical literature recommendations on evaluation of soil liqu efaction potential assessment. The detection of soil liquefaction by using seismic records has been developed by various researchers. With this information,the evaluation of soil liquefaction are well under stood and this lead to a more precise and confident output. Gaining support for CCS will require engaging the interest and building the support of a variety of stakeholders,each with differ ent perspectives and goals. Although,CCS builds upon a technology base developed over more than half a century by the oil and gas industry. In the past,the industrially released CO 2 had been introduced to ocean which was harming the aquatic animals. In view of this,the sequestration of CO 2 into ocean was internationally banned. Hence,now much of the Carbon sequestration process is done by various industries in geolog ical pits. This creates a major threat to the earth quake problems worldwide. With the enhanced frequenc y of earthquakes all around the world,it is presumed by many environment scientists that the CO 2 sequestration pits leads to soil liquefaction and hence it results in more frequent earth quakes. T herefore,this paper summarises,different methods to evaluate liquefaction potential of soil by usi ng studies from seismic waves generated in earth,it is also propose it is also explains different me thodology for an eco friendly technology to reduce CO 2 from environment.
A Study of Ground Surface Motion for Different Locations of Dhaka Cityiosrjce
One of the most frightening and destructive phenomena of nature is a severe earthquake and its
terrible aftereffects.During 1869-1930, five earthquakes with magnitude M≥7 have affected parts of
Bangladesh. Two of them had their epicenters inside Bangladesh. Now-a-days the topics Earthquake has
become a matter of concern to the planners and decision makers. In the recent years no major earthquakes have
been recorded in Bangladesh so using the earthquake data of Haity earthquake that was occurred on 10th
January 2010, response of ground surface of Dhaka city has been proposed. Different soil samples have
collected with their SPT values at different locations of Dhaka city. With the help of these particular N-values
and using the data of ground surface response during the earthquake, logical prediction of the response of the
ground surface can be obtained. From the different borehole data, it is noticed that impervious rocky layer of
Dhaka city is situated beneath 70-80 feet from Existing Ground Llevel(EGL) where the impervious layer of
Haiti is very near to this ground
The CarboZALF-D manipulation experiment – experimental design and SOC patternsAgriculture Journal IJOEAR
Abstract— The CarboZALF-D manipulation experiment – experimental design and SOC patterns
Soil erosion by water or tillage is an essential landscape-shaping factor with feedbacks to the carbon cycle. To study C dynamics and C balances as a function of soil erosion we set up a manipulation experiment at field scale, called “CarboZALF-D”. A defined amount of topsoil material was removed from an eroded Luvisol towards a Colluvic Regosol and reactive, clay-enriched subsoil material was blended into the topsoil of the eroded Luvisol. By doing so we induced transient states for C cycling, net fluxes of CO2 and the C balance. The overall aim of our experiment is to get reliable findings to answer the question: Does soil erosion causes a CO2 source or sink in arable landscapes? In this paper the concept, implementation, and preliminary results of the manipulation experiment are described.
Similar to Seismic behaviour of geosynthetic reinforced municipal solid waste landfills (20)
INFLUENCE OF LEACHATE MIGRATION ON GROUND WATER QUALITY Dr. Naveen BP
In this paper, the concept of leachate pollution index, a tool for quantifying the leachate pollution potential and water quality index for surrounding water bodies of Mavallipura landfill site in Bangalore has been applied. It has been found that the leachate generated from the Mavallipura landfill site has high contamination potential to the surrounding water bodies. The results revealed that quality of ground water resources in Mavallipura landfill is deteriorating largely, as a result of the poor practice of solid waste management. Hence, an effective remedial plan needs to be prepared for the sustainable water quality maintenance of the area.
CHARACTERIZATION OF LEACHATE FROM MUNCIPAL LANDFILL AND ITS EFFECT ON SURROUN...Dr. Naveen BP
Percolating water passing through waste becomes contaminated and will have dissolved soluble organic and inorganic compounds as well as suspended particles. Also the pore fluid of the waste is often released and mixes with this water. The entire contaminated fluid is called leachate. There are many factors that affect leachate production like annual precipitation, runoff, infiltration, evaporation, transpiration, and freezing, mean ambient temperature, waste composition, waste density, initial moisture content, and depth of the waste fill. The production of leachate reduces when a landfill is closed. The decomposition of waste in presence of water can be separated into two different phases of degradation viz., initial aerobic and subsequent anaerobic. Generally, the leachate undergoes natural chemical changes over time that reduces its toxicity. Some of the soluble contaminants enrich the water table, or the saturated zone. Some of remaining molecules naturally adsorbed to the clay liner particles. The paper discusses the characteristics of leachate generated from municipal solid waste landfill and its effect on surrounding water bodies near Mavallipura landfill area in Bangalore. Two samples of water from the nearby pond and well were collected from downstream of Mavallipura landfill site. Physico-chemical characterization of leachate has shown that the leachate contains high concentrations of organic and inorganic constituents beyond the permissible limits. While the heavy metals concentration was in traces as the waste is dumped in the landfill is mainly domestic in nature. The pH of the leachate is marginally alkaline as the pH is 7.4. The results also showed that the highest metal concentration that exists in the leachate was Iron which is about of 11.16 ppm. BOD5 and COD of the leachate are 1500 mg/l and 10400 mg/l, respectively. The leachate characteristics indicate favorable growth of algae in natural water contaminated with leachate with the alkaline condition and with the presence of magnesium as nutrient, which has been confirmed in the nearby surface pond. Knowledge of leachate quality will be useful in planning and providing remedial measures to protect surface and ground water quality in the area.
STATUS OF SOLID WASTE MANAGEMENT IN BANGALORE & REVIEW OF SOLID WASTE TECHNIQ...Dr. Naveen BP
Municipal Solid Waste (MSW) management is one of the vital issues in the
contemporary urban environment, more particularly in developing countries. Municipal solid
waste generation consists of organic and inorganic waste materials generated by various
activities of the society. Improper disposal of solid wastes can pollute all vital components of the
environment (i.e., air, land and water). This paper addresses the status of waste management
practice in Bangalore city, the state capital of Karnataka (which is one of the fastest developing
cities in Asia) and a review of waste treatment technologies adopted to keep in the trends of
waste management practice over time. The Bangalore metropolitan (BBMP) area covers an area
of 1258 sq km and with a population of about 9.0 million generates around 4000 MT/day of
municipal solid waste (MSW) at an average of 0.27 kg/day/per capita. Presently, Bangalore city
faced with the problems with such high quantities of solid waste continuously and it is planning
to upgrade its management system. The major issues in Bangalore city is open dumping without
a liner and without a leachate management facility and the threat of ground water pollution, as
well as saturation of an existing landfill site are the most pressing problems for the city today.
This paper describes the current practices of waste technologies for composting. The importance
of participatory process of each sector of society to enable waste management socio
economically sustainable and ultimately provide an environmentally sustainable solid waste
management system. The major problems in MSW management at Bangalore are due to the lack
of waste segregation at source, low operational efficiency of waste transport system with old
vehicles, low collection efficiency in newly added residential and industrial areas, and an
inefficient and informal recycling system. As per the MSW Rules, the wet waste can be collected
door-to-door in an ideally bin-less city and sent for composting, while the dry waste can be left
to the informal sector like rag pickers and kabadiwalas for recycling. The MSW Rules make it
mandatory for biodegradable urban wastes for composting / vermicomposting, etc, and bans the
burning of garbage and the dry leaves. Bangalore city might need to focus for a better solution of
waste disposal considering unavailability of landfill sites. In this context a review of solid waste
techniques adopted within India and elsewhere will be reviewed and summarized with
recommendations.
STABILIZATION OF WASTE DUMP USING FLYASHDr. Naveen BP
Bangalore is facing problems due to old municipal solid waste dump yards
situated close to the expanding city as they are in the expansion zone of growing city. These
dump yards needs to be reclaimed for infrastructure development such as roads, buildings and
other needs. To reclaim the old dump sites, it is necessary to know the characteristics of solid
waste, more particularly the geotechnical properties. The characteristics of dumps sites are not
generally suitable for foundations of most types of structures coming on them and their
properties need to be improved. Also their characteristics vary change with aging due to their
degradation. This paper presents the results of stabilization of dumped waste by addition of
pozzolanic material such as fly ash. Laboratory tests such as Direct shear and California
Bearing Ratio (CBR) have been performed on dumped waste with fly ash. It was found that
addition of 20% of fly ash the shear strength of dumped waste has increased considerably. Also
CBR of stabilized waste dumps, which is important in the reclamation of dumped sites, has been
analyzed. It was that CBR of stabilized dumps was higher value for 5 mm penetration than for
2.5 mm penetration and tests were conducted to confirm the same. It was observed that the
improvement in CBR is promising and further studies are required to improve to the material to
form suitable for foundations.
Recruiting in the Digital Age: A Social Media MasterclassLuanWise
In this masterclass, presented at the Global HR Summit on 5th June 2024, Luan Wise explored the essential features of social media platforms that support talent acquisition, including LinkedIn, Facebook, Instagram, X (formerly Twitter) and TikTok.
Anny Serafina Love - Letter of Recommendation by Kellen Harkins, MS.AnnySerafinaLove
This letter, written by Kellen Harkins, Course Director at Full Sail University, commends Anny Love's exemplary performance in the Video Sharing Platforms class. It highlights her dedication, willingness to challenge herself, and exceptional skills in production, editing, and marketing across various video platforms like YouTube, TikTok, and Instagram.
3.0 Project 2_ Developing My Brand Identity Kit.pptxtanyjahb
A personal brand exploration presentation summarizes an individual's unique qualities and goals, covering strengths, values, passions, and target audience. It helps individuals understand what makes them stand out, their desired image, and how they aim to achieve it.
Discover the innovative and creative projects that highlight my journey throu...dylandmeas
Discover the innovative and creative projects that highlight my journey through Full Sail University. Below, you’ll find a collection of my work showcasing my skills and expertise in digital marketing, event planning, and media production.
Navigating the world of forex trading can be challenging, especially for beginners. To help you make an informed decision, we have comprehensively compared the best forex brokers in India for 2024. This article, reviewed by Top Forex Brokers Review, will cover featured award winners, the best forex brokers, featured offers, the best copy trading platforms, the best forex brokers for beginners, the best MetaTrader brokers, and recently updated reviews. We will focus on FP Markets, Black Bull, EightCap, IC Markets, and Octa.
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Digital Transformation and IT Strategy Toolkit and TemplatesAurelien Domont, MBA
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In the Adani-Hindenburg case, what is SEBI investigating.pptxAdani case
Adani SEBI investigation revealed that the latter had sought information from five foreign jurisdictions concerning the holdings of the firm’s foreign portfolio investors (FPIs) in relation to the alleged violations of the MPS Regulations. Nevertheless, the economic interest of the twelve FPIs based in tax haven jurisdictions still needs to be determined. The Adani Group firms classed these FPIs as public shareholders. According to Hindenburg, FPIs were used to get around regulatory standards.
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Proceedings of the International Conference on Ground Improvement and Ground Control
and development of poisonous gases, which can be explosive in nature and cause harm to
the health of the people living around. Hence, to avoid these effects, engineered landfills
are designed with impervious layers at the bottom and providing a way for the gases to
escape from the top of the fill. Today landfills are highly engineered in order to protect the
environment and prevent the pollutants from entering the soil and possibly polluting the
ground water. Municipal solid waste (MSW) means combined household, commercial and
institutional waste material generated in a given area. MSW is extremely heterogeneous
and its properties involve significant uncertainties.
For the past few years, increased attention has been placed on the vulnerability of landfills to earthquake-induced deformations. In addition to the overall stability of the landfill
waste, the cover and bottom liner systems that protect the surrounding soil and the ground
water from potential contamination have to be designed to sustain a seismic event. It is just
because, landfills will be affected by seismic activity. The increased tensions in the landfill
liner material may lead to tearing due to excessive stretching (Thusyanthan et al., 2007).
Also, the top of the landfill may develop cracks thereby causing the gas collection systems to move relative to the cover (Matasovic and Kavazanjian, 2006). As mentioned by
Hoe and Leshchinsky (1997) the seismic performance of landfills has been reported for
the 1989 Loma Prieta Earthquake by Orr and Finch (1990); Buranek and Prasad (1991);
Johnson et al. (1991); Shrarma and Goyal (1991) and the 1994 Northridge Earthquake by
Augello et al. (1995) and Matasovic et al. (1995). Minor cracks and displacements related
to the movement of cover soil were observed in some of the landfills. Also, major damage
was reported for a landfill in which geomembrane was torn.
2. GEOMETRY OF LANDFILL AND SITE CONDITIONS
In the present study the landfill cross section adopted by Yegian and Kadakal (1998b).
Figure 1 shows the cross section of the landfill considered for the seismic response study.
However the height of the landfill chosen for the analysis is 30 m. Figure 2 shows the
landfill cross section in which geosynthetic reinforcements are converted in to equivalent
Figure 1. Cross section of landfill with geosynthetic reinforcement (Yegian and Kadakal, 1998).
Figure 2. Representation of geosynthetic
material with equivalent soil layers (Yegian and
Kadakal, 1998).
3. Seismic Behaviour of Geosynthetic Reinforced Municipal Solid Waste Landfills
973
Table 1. Average Shear Wave Velocity and Unit weights.
Site Class
Class A
Class B
Class C
Class D
Class E
Shear wave velocity,
Vs (m/s)
Unit weight,
γ (kN/m3 )
1600
1000
500
200
100
25
22
19
18
16
WASTE
Vs = 274m/s, γ =10kN/m3
Vs = 1600 m/s
CLASS-A SITE
Figure 3. Geometry and properties of the landfill involving the subsoil.
3. SEISMIC RESPONSE ANALYSIS
Acceleration (g)
soil layers. The detailed procedure of evaluating the equivalent soil layers can be obtained
from Yegian and Kadakal (1998b).
In order to study the effect of various sub soil conditions on the seismic response of a
landfill model landfills are selected considering various site conditions as per International
Building Code 2006 classification. The depth of the subsoil layer chosen beneath the landfill
is 30 m. Table 1 shows the average shear wave velocities and unit weights for a depth of
30 m adopted for different sites. Figure 3 illustrates typical landfill cross section resting on
sub soil (site class A).
0.10
0.05
Seismic response analysis of the selected
0.00
landfills with and without geosynthetic
-0.05
reinforcements have been carried out
-0.10
using computer program SHAKE2000
0 10 20 30 40 50 60 70 80 90 100 110 120 130
(Schnabel et al., 1972) employing earthTime (sec)
quake ground motions recorded during
2001 Bhuj earthquake in India. Figure 4 Figure 4. Strong motion record during 2001 Bhuj
shows the time history of accelerations earthquake.
having peak acceleration of 0.104 g. The
peak acceleration was scaled in the range of 0.1 g to 0.4 g to study the effect of amplitude of
ground motion on the seismic response of the landfills. For dynamic analysis, the required
dynamic properties were selected for different materials. For sandy soils, rock and clay as
per Seed & Idriss (1970), Schnabel (1973) and Vucetic and Dobry (1991) respectively. The
dynamic properties of solid waste and geosynthetic liners were selected from Kavazanjian
and Matasovic (1995) and Yegian & Kadakal (1998a & 1998b) respectively.
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Proceedings of the International Conference on Ground Improvement and Ground Control
PGA (g)
0.10
0.15
0.20
0.25
0.30
0
-10
Depth (m)
-20
-30
Landfill Botto m
-40
Site A (URF)
Site A (RF)
-50
t
-60
Figure 5. Variation of PGA for 0.1 g input acceleration.
Site
Table 2. Variation of Peak Ground Acceleration.
0.1 g
0.2 g
0.3 g
0.4 g
URF
RF
URF
RF
URF
RF
URF
RF
Class A
Class B
Class C
Class D
Class E
0.250
0.327
0.396
0.087
0.043
0.197
0.235
0.313
0.093
0.044
0.483
0.601
0.612
0.108
0.043
0.362
0.388
0.373
0.123
0.048
0.609
0.759
0.743
0.123
0.056
0.410
0.410
0.399
0.140
0.060
0.712
0.881
0.845
0.150
0.075
0.445
0.446
0.454
0.178
0.086
4. RESULTS AND DISCUSSION
4.1. Peak Ground Acceleration
Figure 5 shows variation of peak ground acceleration (PGA) from the subsoil to top of
landfill both for unreinforced (URF) and reinforced (RF) landfill profiles corresponding to
0.1 g amplitude. It is observed that PGA has decreased from 0.25 g to 0.197 g by the inclusion of geosynthetic reinforcements. Table 2 shows comparison of PGA values for 0.1 g
to 0.4 g at the top of landfills both for unreinforced for different sites. It can be noticed
from Table 2 that as the input acceleration increases significant amplification of acceleration occur both in case of unreinforced and reinforced landfills for stiffer strata (site class
A to C). However, such amplification of acceleration is reduced drastically in case of reinforced case compared to unreinforced landfills. Further, it is observed that for softer soils
(site class D and E) the input motion gets attenuated significantly.
4.2. Spectral Acceleration
Figure 6 shows spectral acceleration at the top of landfill at different period. At low amplitude (0.1 g) there is no significant variation in spectral accelerations both for reinforced and
unreinforced landfills for site class A. Table 3 illustrate the comparison of spectral accelerations for different cases. It is observed that the spectral acceleration values reduced with
5. Spectral Acceleration (g)
Seismic Behaviour of Geosynthetic Reinforced Municipal Solid Waste Landfills
975
1.0
Site A (URF)
Site A (RF)
0.8
0.6
0.4
0.2
0.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Period (s)
Figure 6. Variation of spectral acceleration for 0.1 g amplitude.
Table 3. Variation of spectral acceleration.
Site
0.1 g
URF
RF
0.2 g
URF
RF
0.3 g
URF
RF
0.4 g
URF
RF
Class A
Class B
Class C
Class D
Class E
0.91
1.145
1.625
0.274
0.130
1.721
1.789
2.526
0.322
0.153
2.058
2.092
3.204
0.386
0.164
2.478
2.666
3.662
0.479
0.238
0.99
1.086
1.282
0.274
0.151
1.602
1.64
1.718
0.383
0.170
1.89
1.961
2.016
0.441
0.201
2.132
2.11
2.064
0.558
0.29
Amplificartion Ratio(A)
10
Site A (URF)
Site A (RF)
8
6
4
2
0
0
2
4
6
8
10
12
14
16
Frequenc y (Hz)
Figure 7. Variation of Amplification ratio for 0.1 g amplitude.
the usage of geosynthetic reinforcements in the landfill profiles when subsoil conditions
were stiffer (class A to class C) beyond 0.1 g amplitude. Further, softer soils (class D and
class E) showed higher values when reinforcements were included in the profiles.
4.3. Amplification Ratio
Figure 7 illustrates the variation of amplification ratio (A) at the top of landfill for site class
A. Significant reduction in amplification of ground motion parameters can be noticed when
the landfills are reinforced with geosynthetics. Table 4 shows the comparison of amplification ratio for different cases. Usage of reinforcements in the landfill profiles reduces the
amplification values considerably except for some minor variations in class D and E sites.
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Proceedings of the International Conference on Ground Improvement and Ground Control
Table 4. Variation of Amplification ratio.
Site
0.1 g
URF
RF
0.2 g
URF
RF
0.3 g
URF
RF
0.4 g
URF
RF
Class A
Class B
Class C
Class D
Class E
9.01
9.81
6.87
3.09
3.37
4.87
6.13
5.35
2.39
2.35
3.65
5.43
4.58
2.58
1.76
3.31
4.61
4.13
2.26
1.73
4.29
4.61
5.58
3.05
2.96
3.79
3.94
4.24
2.72
2.78
3.15
3.17
2.95
2.61
1.63
2.30
2.32
2.62
2.41
1.63
5. CONCLUDING REMARKS
Based on the results of the present study on both unreinforced and reinforced MSW landfills, it is observed that when input motions were applied at the base of the subsoil of
reinforced profiles, (Class A to Class C) significant reductions in the peak ground acceleration and spectral acceleration values are observed even for low amplitudes such as 0.1 g
and 0.2 g. This behavior can be attributed to the higher stiffness of the foundation soils
which amplifies the input motion. These amplifications are considerably minimized with
the usage of geosynthetic reinforcements even for smaller amplitudes. However, when
landfills are resting on relatively soft soils (Class D and Class E) the incorporation of
geosynthetics in to the landfill profile does not make any significant variations in peak
ground acceleration, spectral acceleration and amplification values. This is due to the fact
that the differences in the stiffnesses of subsoil and landfill structure are relatively small.
REFERENCES
1. Augello Anthony J., Matasovic Neven, Bray Jonathan D., Kavazanjian Edward and Seed
Raymond B. (1995). Evaluation of Solid Waste Landfill Performance During The Northridge Earthquake,
ASCE, Geotechnical Special Publication, No.54, Edited by Mishac K. Yegian and W.D. LiaFinn.
2. Bye Hoe I. Ling and Dov Leshchinsky (1997). Seismic stability and permanent displacement of landfill
cover system”, J. Geotechnical and Geoenvironmental Engrg, 123(2): 113–122.
3. Kavazanjian Jr., E. and Matasovic, N. (1995). Seismic analysis of solid waste landfills, Geoenvironmental
2000, Geotechnical Special Publication, and No.46. ASCE, New York, N.Y.
4. Matasovic, N. and Kavazanjian Jr., E. (2006). Seismic Response of a Composite Landfill Cover.
J. Geotechnical and Geoenvironmental Engrg,, 132(4): 448–455.
5. M. K. Yegian, J. N. Harb, and U. Kadakal (1998a). Dynamic response analysis procedure for landfills
with geosynthetic liners. J. Geotechnical and Geoenvironmental Engrg. 124(10), Paper No. 16464.
6. M.K.Yegian and U. Kadakal (1998b). Seismic Response of Landfills with Geosynthetic Liners, J. Geotechnical and Geoenvironmental Engrg, 154(25), Paper No. 18454.
7. Matasovic, N., Kavazanjian Jr., E, Augell, A.J, Bray, J.D and Seed, R.B. (1995). Solid waste landfill
damage caused by 17 January 1994 Northridge Earthquake, The Northridge, California, Earthquake of 17
january 1994, M.C. Woods and W.R. Seiple, eds., California Dept. of Conservation, Div. of Mines
and Geology.
8. Thusyanthan, N.I., Madabhushi, S.P.G. and Singh, S. (2007). Tension in Geomembranes on
Landfill slopes Under Static and Earthquake Loading — Centrifuge Study, Geotextiles and Geomembranes,
25: 78–95.