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Q. What do you mean by Ozone Test?
Some research and studies determined that the ozone test was unnecessary as this affects only the surface layer. In un-stretched rubber, ozone degradation is confined to a thin surface layer, typically 0.5 µ. Ozone cracks develop at right angles to the tensile strain and they degrade rubber's tensile strength and may also initiate fatigue growth that ultimately leads to failure of rubber products. Because cracks only occur in regions where tensile stresses are induced, they are unable to penetrate very far into objects, which are under compression. In bearings, the growth of cracks ceases close to the surface because cracks quickly encounter compressive rather than tensile stresses. Therefore, it has been contended that ozone damage is a serious concern in thin-walled products, but not in those bulky products like bearings. Contrarily there is a harmful effect because the manufacturers use anti ozanant waxes to protect against ozone attack. This viscous layer of wax is responsible for a significant number of serious slipping problems where the bearings 'walked-out' of the support area.
Explain the Statements about the Differential Levelling I. Bench mark (BM) - relatively permanent point of known elevation as indicated on the Contract drawings II. Back s
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Explain the Rippl Diagram or Mass Diagram For a potable water reservoir, it is the simultaneous plots of the cumulative inflow and cumulative water consumption/demand, termed "
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Question Shall layer of wearing course or additional thickness be designed on surface of piers ? Answer In designing of piers , considerations have to be given to
Autocad-Introduction Learning to use a CAD system is similar to learning a new language. It is necessary tobegin with the basic alphabet and learn how to use it correctly and
I would like to know if anyone can help me with my const estimating project
Reasons of ground heaving during pipe-jacking It is commonly recognized that ground settlement is one of the significant concern in pipe jacking operation. Though engineer mus
Explain the Normal Depth Equation The equation is derived from the Chezy-Manning equation. As written below it determines the diameter of a circular storm or sanitary sewer wh
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