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A Self-Learning Manual - Institution of Engineers Mauritius

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A <strong>Self</strong>-<strong>Learning</strong> <strong>Manual</strong><br />

Mastering Different Fields <strong>of</strong> Civil Engineering Works (VC-Q&A Method) Vincent T. H. CHU<br />

Hence, these terms differ basically from the locations at which they are<br />

applied. Due to different locations <strong>of</strong> application <strong>of</strong> plasterwork, the<br />

proportion <strong>of</strong> material component for plaster and render is different. For<br />

example:<br />

(i) Cement plaster<br />

Undercoat- cement:lime:sand (by volume) = 1:4:16<br />

Finishing coat - cement:lime:sand = 1:12:30<br />

(ii) Cement render<br />

Undercoat- cement:lime:sand (by volume) = 1:2:6<br />

Finishing coat - cement:lime:sand = 1:3:6<br />

12. In the design <strong>of</strong> corbel beams in a pumping station, why are shear<br />

links designed in the top 2/3 <strong>of</strong> the section?<br />

What is the general advice on the design? (PS3)<br />

Corbel beams are defined as z/d0.6, it should be not considered as corbel beams but as<br />

cantilevers.<br />

In designing corbel beams, care should be taken to avoid bearing load to<br />

extend beyond the straight portion <strong>of</strong> tie bars, otherwise the corners <strong>of</strong><br />

corbel beams are likely to shear <strong>of</strong>f. Reference is made to L. A. Clark<br />

(1983).<br />

381

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