### Mark Evernden

Lecturer at the University of Bath.

• ### Question 9

The top and bottom chord of the long truss shown below are CHS sections, and each has I = 31x106 mm4 and A = 6300 mm2. Take Esteel = 200 GPa. All members have the same length of 1m.  Determine the...

• ### Question 8

Correct  SFD is D:  Check  out http://expeditionworkshed.org/applets/2D_frames/sketch_10/sketch_10.html for a great pushmepullme model of the problem. Thanks to  Al  form  supplying  the answer The answer is: D Since the load is applied at an angle, there two components of that load:...

• ### Question 7

Would you like a quick revision of simple hanging cables? CLICK HERE If the cable has a diameter of 24mm what is the maximum stress in the cable? The correct answer is approx 676N/mm2, if you  got it wrong please check...

• ### Question 6

For the structure shown below calculate the position of the roller support from the free end of the beam (C) such that the moment at the fixed end (A) is zero kNm. [Solution x=3.33m] If  you didnt get it right...

• ### Question 5

After the maths of last week's question, here is something to make your brain work in a slightly different way! UPDATE: Its about real world design and the implications of inaccuracies in construction. A person weighing 600N sits on a three-legged stool....

• ### Question 4

Something a bit harder this week to keep you all on your toes! What diameter of steel cable is required such that the mid-span deflection of the timber beam is only 50% of the mid-span deflection of the beam without...

• ### Question 3

Match each Shear Force Diagram (SFD- red)  with a Bending Moment Diagram (BMD-blue). Hint: BMDs are drawn on the tension side of the deflected shape. Match each Shear Force Diagram (SFD- red)  with a Bending Moment Diagram (BMD-blue). Hint: BMDs...

• ### Question 2

No  calculations this week! Which BMD matches the load-case for the structure shown below ? Choose  from the  following What a week over 60 entries! Unfortunately only 50% of them correct ( BMD:4). Quick Explanation: As the right hand support is...

• ### Question 1

Calculate the BM at the top right corner when x = 3.9m and P = 4.3kN. Write your answer to one decimal place and in units of kNm Congratulations to Barrie Dams you've won some chocolates! Tim Ibell, Antony Darby, Charlie...

• ### Trial Question 1

Okay here goes,  our first trial question.  Get your pens ready ...GO The largest BM felt by this Virendeel truss is approximately: A. 10 kNm in BE B. 5 kNm in AD C. 40 kNm in BC D. 20 kNm...