Useful links         Petroleum Engineering                                              http://www.peteng.com/ Chemical Engineering                                               http://www.mycalculations.com/chem/index.html Mechanical Engineering                                            http://www.mechengcalculations.com/ Unit Conversion calculations                                    http://www.mycalculations.com/jmm/uni01.html Basic Solid Analysis                                                   http://www.peteng.com/jmm/drl01.html Partial Volume of Tanks                                             http://www.mycalculations.com/chem/jmm/chem12.html Liquid Pipe Flow : Pressure Drop calculation       http://www.mycalculations.com/chem/jmm/pipe004.html Liquid Pipe Flow :Pipe Length Calculation            http://www.mycalculations.com/chem/jmm/pipe006.html Liquid Pipe Flow :Rate Flow Calculation                http://www.mycalculations.com/chem/jmm/pipe008.html Liquid Pipe Flow :Pipe Diameter Calculation        http://www.mycalculations.com/chem/jmm/pipe010.html