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BS-4994 - Ebook download as PDF File (.pdf) or read book online. FRP tank construction standard. British Standard BS 4994: 1987. Specification for Design and Construction of Vessels and Tanks in Reinforced Plastics.

Specification for Design and construction of vessels and tanks in reinforced plastics Executive summary Requirements for the design, construction, inspection, testing and erection of vessels and tanks in reinforced plastics. Abstract This British Standard specifies requirements for the design, materials, construction, inspection, testing and erection of vessels and tanks in reinforced plastics, consisting of a polyester, epoxy or furane resin system reinforced with glass fibres, manufactured by the wet lay-up process. Constructions both with and without a lining of thermoplastics are included. Laminar constructions are usually anisotropic and the design method in this standard, being based on unit loadings, is particularly suited to the design of composites of reinforced plastics.

This standard covers vessels and tanks subject to temperatures between -30 degrees C and 110 degrees C. This revision of this British Standard has been made to take account of experience with reinforced plastics vessels and tanks and opportunity has been taken to extend the scope to include filament winding and rectangular tanks and to categorize vessels in relation to duty. History and related standards This British Standard is a revision of BS 4994:1973, which is withdrawn together with its explanatory supplement PD 6480.

• • Part of the book series (MULT, volume 3) Abstract Mainstream philosophies and social ideologies have played a decisive role in education in China. This chapter provides a historical overview of English literacy instruction in China under different social, curricular, and pedagogical ideologies. The authors trace the history of English education in China back to the late Imperial period in the nineteenth century when Western nations were establishing trade with China. They explore the influence of Confucianism, John Dewey’s Pragmatism, and Marxism on English teaching in China, and by analyzing curricular artifacts, such as syllabi and textbooks, identify ideologies that historically determined the orientation of English curricula in China at different time periods. Mr Sun Song Free Download. The five main ideologies identified by Morris and Adamson (Curriculum, schooling and society in Hong Kong. Hong Kong University Press, Hong Kong, 2010) are seen as being historically influential in determining the orientation of English curricula: (a) social and economic efficiency, (b) child-centered ideology, (c) academic rationalism, (d) social reconstructionism, and (e) orthodoxy/ideological transfer.

Through an analysis of the ideologies associated with different periods of China’s development, the authors seek to explain how English has attained its current status of high prestige and increasingly numerous functions in Chinese society.