Book•
Foundation analysis and design
01 Jan 1968-
TL;DR: In this paper, Fondation de soutenagement et al. presented a reference record for Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08.
Abstract: Keywords: Fondation ; Mur de soutenement ; Pieux ; Capacite portante ; Ancrage ; Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08
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TL;DR: In this article, a non-homogenous concrete block is made from two concrete blocks filled by barite, where the concrete blocks are reinforced by SiO2 nanoparticles where the Mori-Tanaka model is used for calculating the effective material properties of the structure.
13 citations
TL;DR: In this paper, the physical and chemical characteristics of decomposed solid waste and leachate collected from Matuail landfill sites were investigated, and the average concentrations of Fe, Cu, and Ni in leachates samples collected from treated pond were found to be 19.11 mg/l, 0.71mg/l and 2.5mg/L respectively exceeding Bangladesh standards.
Abstract: Rapid urbanization of Dhaka city has created immense pressure on its urban services including solid waste disposal. Both city corporations (Dhaka North, DNCC and Dhaka South, DSCC) have been facing tremendous problem to maintain sustainable waste management over the last few decades. At present, the DNCC and DSCC dump 68% of the total sold waste to the sanitary landfill site at Matuail. Decomposed solid waste is a potential source of heavy metals and toxic chemicals that pollute the soil as well as the surrounding water body. For environmental sustainability, it is now essential to reduce the load of decomposed solid waste at landfill site through the conversion of waste into re-usable product. Proper characterization of solid wastes is pre-requisite for efficient management and solid waste stabilization. In this paper, it is therefore aimed to investigate the physical and chemical characteristics of decomposed solid waste and leachate collected from Matuail landfill sites. The average concentrations of Fe, Cu, and Ni in leachate samples collected from treated pond were found to be 19.11mg/l, 0.71mg/l, and 2.5mg/l respectively exceeding Bangladesh standards. The presence of heavy metals in decomposed solid waste was also found to be significant. In order to reduce the scale of pollution it is recommended to stabilize solid waste to use it as a construction material. Physical properties that were analyzed in this study will also be helpful for selecting stabilizing additive for perfect stabilization.
13 citations
TL;DR: In this paper, shallow seismic refraction data interpretation has been used to delineate groundwater aquifer and fault elements which are dissecting the northwestern part of the Gulf of Suez.
13 citations
01 Jan 2011
TL;DR: In this paper, the minimum weight and costs in the design of concrete retaining walls following a computation of lateral total thrust on the wall due to backfill pressures, bearing capacity consideration, settlement analysis, stability analysis, and application of reinforced concrete principles.
Abstract: In the present paper, lessons are learnt from ant society so that humankind can optimize his engineering issues. As an example of such issues, a reinforced concrete retaining wall for which the application of optimization can reduce the costs involved is considered. Traditional design procedure for reinforced concrete retaining walls is unable to design an optimized wall unless a large trial effort is undertaken. This paper introduces a learning procedure from ants, which is a general search technique for the solution of difficult combinatorial problems with its theoretical roots based on the foraging behavior of ants. This methodology arrives at an optimal design for concrete retaining walls due to its capability to explore and exploit the solution space effectively. The basis of analysis in this paper is to determine the minimum weight and costs in the design of concrete retaining walls following a computation of lateral total thrust on the wall due to backfill pressures, bearing capacity consideration, settlement analysis, stability analysis, and application of design of reinforced concrete principles. The results clearly indicate that ant colony can educate engineers comprehensively to reach a minimum cost justified retaining wall through an optimization approach.
13 citations
Additional excerpts
...0 (m) (Das, 1999) 167.1933.07.0 0.233H (m) ( Bowles, 1996) 727.0582.0443.0 for minimum cost (Saribas and Erbatur, 1996) 789.0603.0436.0 for minimum weight (Saribas and Erbatur, 1996) 20.196.072.0 Sivakumar and Munwar (2008) 939.0726.0555.0 for minimum cost (present study) 013.1842.0629.0 for…...
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Journal Article•
TL;DR: In this article, the uplift capacity of piles in cohesionless soil has been investigated and shown to be dependent on the relative undrained/drained shear strength of cohesiveless soil, the depth ratio of embedment and soil thickness ratio.
Abstract: Pile foundations, also known as substructure, are used to carry and transfer the load of the structure to the bearing ground located at some depth below ground surface. The main components of the foundation are the pile cap and the piles. Piles are long and slender members which transfer the load through the shallow soil of lower bearing capacity to deeper soil or rock of high bearing capacity. They are also used in normal soil condition to resist uplift forces or in poor soil condition to resist lateral forces. Most of the piles are made from three main types of material which are wood, steel and concrete. Piles are normally driven, drilled or jacked into the ground and connected to pile caps. Based on a few number of laboratory model results many investigators reported the uplift response of piles in cohesionless soil, a review of related previous works shows that not much research has been done to define the uplift capacity in cohesionless soil, a problem that is often encountered in field. The paper observed that the ultimate uplift capacity is dependent on the relative undrained/drained shear strength of cohesionless soil, the depth ratio of embedment and soil thickness ratio. © 2012 ejge.
13 citations