This manual is a practical guide to current good practice for the detailing and the construction of passive soil gas protective measures for new and existing residential development. It does not contain advice on the design of passive or active protective measures for specific gas regimes, nor does it provide information on active gas protective systems or inground protective measures external to the building, such as the use of venting trenches or barriers. The gases considered are principally methane, carbon dioxide and mixtures of the two. The sources of both gases are typically:
l fill or made ground containing biodegradable organic material;
l soils with a high organic content, eg peat;
l coal measures and/or underground mine workings;
l soil gas migrating from a nearby source.
The details are also applicable to radon and, subject to the suitability of the materials, VOCs. This manual should be used only after the gas regime for a site has been fully characterised and it has been confirmed that the passive protective measures contained in the manual are appropriate. Passive protective measures are the combination of utilising the ground floor as a barrier against the ingress into the building of soil gas, and sub-floor venting which dilutes and disperses the soil gas. The investigation and assessment of a soil gas regime for a specific site and the selection and design of an appropriate gas protective system or systems requires specialist advice from a suitably qualified and experienced engineer or scientist. Every site is unique; this manual does not provide advice on the assessment of sites or the selection of the most appropriate protective measures. The reader must, therefore, make appropriate and specific assessments with a geotechnical and geoenvironmental investigation. Guidance on site assessment is in the publications listed opposite on page iv, and on page 66. When applying the details in this manual, the designer must always check that the details for gas protection do not conflict with Building Regulations for other design and construction criteria, for example thermal insulation, accessibility or damp and water penetration.
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1. "A simple mix design method for self-compacting concrete” by Nan Su , Kung-Chung Hsu and His-Wen Chai, Cement and Concrete Research, Volume 31, Issue 12, December 2001, Pages 1799-1807;
2. PRO 33: 3rd International RILEM Symposium on Self-Compacting Concrete, 2003
3. Van K. Bui, Yilmaz Akkaya /2002/, “Rheological model for self-consolidating concrete”, ACI Materials Journal pp549-559
4. Nanthagopalan P, Santhanam M, “Experimental investigations on the influence of paste composition and content on the properties of SCC”, Construction and Building Materials Volume 23, Issue 11, November 2009, Pages 3443-3449
5. Persson B., 2003, “Internal frost resistance and salt frost resistance of SCC”, Cement and Concrete research, Volume 33, Issue 3, March 2003, Pages 373-379
I'll be very thankful if someone of you can share one or more of these documents.
Posted by: mojtaba26 - 05-31-2011, 07:34 AM - Forum: Archive
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HELLO!
I want the optimization of hydraulic structures, especially in gravity concrete dam design, do research. if you might help me to what I use the book or source.
thanks
Modern geochemistry aims to provide an accurate description of geological processes, and a set of models and quantitative rules that help predict the evolution of geological systems. This work is an introduction to the mathematical methods of geochemical modeling, largely based on examples presented with full solutions. It shows how geochemical problems, dealing with mass balance, equilibrium, fractionation and dynamics and transport in the igneous, sedimentary and oceanic environments, can be reformulated in terms of equations. Its practical approach then leads to simple but efficient methods of solution. This book should help the motivated reader to overcome the formal difficulties of geochemical modeling, and bring state-of-the-art methods within reach of advanced students in geochemistry and geophysics, as well as in physics and chemistry.
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Hello! I'm looking for the follwoing article:
Decanini, L., Liberatore, L., Mollaioli, F., De Sortis, A. "Estimation of near-source ground motion and seismic behaviour of RC framed structures damaged by the 1999 Athens earthquake", Journal of Earthquake Engineering, Volume 9, Issue 5, 01 September 2005, Pages 609 - 635.
Posted by: rohailiyaz - 05-31-2011, 06:42 AM - Forum: Archive
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Do anyone have this publication?
ASCE 20-96
Standard Guidelines for the Design and Installation of Pile Foundations
Provides a guideline for an engineering approach to the design & subsequent installation of pile foundations. The purpose is to furnish a rational basis for this process, taking into account published model building codes & general standards of practice.
Author: J. Anderson, N. Howard | Size: 0.45 MB | Format:PDF | Publisher: IHS BRE Press | Year: 2000 | pages: 47 | ISBN: 1860813763
The environmental impact of housing is considerable. Each year in the UK, domestic energy use accounts for around 30% of energy consumption, and the materials used in house construction account for 10% of mineral extraction and 1% of climate change. Whilst energy efficiency initiatives over the last 30 years have reduced the energy needed to heat a typical house considerably, the development of initiatives to reduce the impacts arising from construction materials has been comparatively slow. Of the written information available to date, most has lacked practical guidance and has proved difficult for designers and their clients to interpret. This handbook provides a ‘green’ guide to specification of construction materials for housing which is both easy to use and soundly based on Life Cycle Assessment (LCA) studies of the environmental impacts of different materials.
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