Search results for: Latest H19-461_V1.0 Exam Questions Vce π― H19-461_V1.0 Labs π H19-461_V1.0 New Study Plan π Search for β H19-461_V1.0 οΈβοΈ on γ www.pdfvce.com γ immediately to obtain a free download π§H19-461_V1.0 Best Vce
-
An improved approach to site characterisation combining geophysical and geotechnical data
In response to environmental, social and climate change the demand for land and the controls on land use are increasing. Traditional site characterisation methods which incorporate drilling, testing and sampling are energy intensive, logistically challenging and time-consuming. The approach that I propose involves using geophysical technologies as well as geotechnical testing to model and characterise a site.
Improvements in data acquisition and data storage capabilities allow a geophysicist to test, characterise and model a site and report regions for further investigation in a fraction of the time of traditional site characterisation. The process requires the application of an appropriate geophysical investigation with some effective geotechnical drilling, testing and sampling to develop a direct correlation. Direct testing may then be required to confirm model estimations and anomalies.
I believe that a geotechnical professional armed with this simple method of characterisation will be better equipped to target regions that require further testing.
-
The effectiveness of an impact roller on alluvial sandy clays
A new heavy haul railway embankment in the Pilbara region of Western Australia traversed an alluvial floodplain deposit that displayed sufficient dry strength but inadequate soil strength when saturated. The use of conventional ground improvement techniques for the design and construction of the embankment was assessed against the use of a dynamic impact roller. An impact roller trial was conducted to assess its effectiveness at increasing the soil density with the premise that an increase in density would increase the saturated strength of the soil. Trial results indicated that the impact roller generally increased the soil density to a depth of approximately 1m. However, when saturated, the strength of the modified soil remained unacceptably low as a heavy haul railway embankment foundation subgrade.
-
Technical Presentations and AGM
Associate Professors Jun-ichi Kodama and Atsushi Sainoki
-
Subsoil drainage design β Perth residential and road developments
Extensive areas of the Perth Urban area are underlain by sandy soils, high water table and shallow depths to low permeability horizons. Drainage design involves considerations of subsoil drains, soak wells, stormwater sumps (for local authority drainage) and open βswaleβ drains. This paper discusses approaches undertaken by the authors to the design of such drainage fixtures and provides some practical design guidelines for residential developments.
-
Trials And Validation Of Deep Compaction Using The βSquareβ Impact Roller
The use of non-circular impact modules for compaction, known as impact rolling, impact compaction or rolling dynamic compaction, has been gaining currency for a wide range of earthworks projects. Impact rolling has been shown to deliver significant improvements in soil strength or density to depths far exceeding conventional circular drum rollers. Now accepted in the Australian Standard for earthworks, and with documented experiences of impact roller performance, the technique can be considered for projects as varied as deep reclamation, major embankments and improving existing fill. In many cases, particularly with larger projects, a concerted trial programme delivers dividends in the form of confidence in the use of the technology, the most efficient methods for a particular application and the fact that the specification can be met in the most efficient manner. As much as trials are co-ordinated and controlled, so must the production work have an appropriate level of control and monitoring to ensure that the impact rollers are correctly utilised. This paper outlines several case examples where expenditure on detailed trials resulted in efficient impact rolling during productive earthworks.
-
Jacked Piling in Australia
Dr Peter W Mitchell
-
AGS Sydney Chapter, International Women in Engineering Event βΒ Enhanced By Engineering
Juggling and Inclusion - Managing Work Life Balance