Please boost your Plan to download papers
UCL TEST - Math Problem Example
Engineering and Construction
Pages 10 (2510 words)
UCL TEST Name: Institution: Engineering and Construction Test for applicants in UCL, Structures, Fluid Mechanics, Materials, and Soil Mechanics QUESTION 1 First determine whether the structure is statically determinate or indeterminate using 2n= m + r, where n= joints, m= members, r=reactions In this case, n=11, m=19, r=3 thus 2x11=22=19+3 therefore the structure is statically determinate Let the length of each of the 5 bays be x, Determine the reactions at the supports = (1+1+1+1+1)/2 = 2.5 units, simply because the truss is symmetrical about the apex…
AC= -2.5/sinO Sum of forces in the x-axis=o AB+CcosO=0, AB=-2.5/sinOXcosO=2.5/tanO Joint C 1 D C A B Sum of forces in the y-axis=0 -CA sinO+ CD sinO-1- CB cosO=0 Sum of forces in the x-axis=o -CA cosO+C D cosO+ CBsinO=0 Solving the equations we find CD &CB Joint B D C A B E Sum of forces in the y-axis=0 BC cosO+ BD cosO =0 Sum of forces in the x-axis=o -BA + BC sinO + BE +BD sinO =0 Solving we get BD and BE Joint D 1 F D C E B Sum of forces in the y-axis=0 -DC cosO+D F cosO- DBcos(90-O)-DE cos O -1=0 Sum of forces in the x-axis=o -DC sinO+ DF sinO- DBsin(90-O)-DE sin O =0 Solving we get DF QUESTION 2 Introduction Prestressing is normally accomplished in 3 ways which are: pre-tensioned concrete, followed by bonded and the unbonded and post-tensioned concrete. Pre-tensioned concrete is then cast all around the already tensioned tendons. Using this method results in a good bond in between the tendon and the concrete that both safeguards the tendon from sources of corrosion as well as allowing for direct transmission of tension. ...
Not exactly what