http://www.dredgingengineering.com/dredging/default.asp .......... A way of life .......... <br>Copyright &copy; Dr.ir. S.A. Miedema webmaster@samconsult.biz webmaster@samconsult.biz http://www.dredgingengineering.com/dredging/default.asp?ACT=5&id=1&content=20 http://www.dredgingengineering.com/dredging/default.asp?ACT=5&id=40&content=86 http://www.dredgingengineering.com/dredging/default.asp?ACT=5&id=20&content=32 default.asp?ACT=26&cat=8&id=1 http://www.dredgingengineering.com/dredging/default.asp?id=32&mnu=32 http://www.dredgingengineering.com/dredging/default.asp?id=33&mnu=33 <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt"><FONT face="times new roman, times, serif"><FONT size=3><SPAN lang=EN-GB style="FONT-FAMILY: 'Times New Roman'"><SPAN style="mso-list: Ignore">1.<SPAN style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN></SPAN></SPAN><SPAN lang=EN-GB style="FONT-FAMILY: 'Times New Roman'">Derive the equations describing the Mohr circle and make a drawing of the Mohr circle, containing the shear and the normal stresses, the failure envelope<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>and the angle of internal friction.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></FONT></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt"><FONT face="times new roman, times, serif"><FONT size=3><SPAN lang=EN-GB style="FONT-FAMILY: 'Times New Roman'"><SPAN style="mso-list: Ignore">2.<SPAN style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN></SPAN></SPAN><SPAN lang=EN-GB style="FONT-FAMILY: 'Times New Roman'">Derive the settling velocity of sphere's and explain how in practice the settling velocity of grains has to be determined (consider laminar and turbulent settling and a transition zone).<o:p></o:p></SPAN></FONT></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt"><FONT face="times new roman, times, serif"><FONT size=3><SPAN lang=EN-GB style="FONT-FAMILY: 'Times New Roman'"><SPAN style="mso-list: Ignore">3.<SPAN style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN></SPAN></SPAN><SPAN lang=EN-GB style="FONT-FAMILY: 'Times New Roman'">Derive the failure angles for passive and active soil failure. What is the ratio between the active and passive forces for an angle of internal friction of 45</SPAN><SPAN lang=EN-GB style="FONT-FAMILY: Symbol; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-char-type: symbol; mso-symbol-font-family: Symbol"><SPAN style="mso-char-type: symbol; mso-symbol-font-family: Symbol">°</SPAN></SPAN><SPAN lang=EN-GB style="FONT-FAMILY: 'Times New Roman'">.<o:p></o:p></SPAN></FONT></FONT></P> Dredging Engineering http://www.dredgingengineering.com/dredging/default.asp?ACT=4