# Solution to Questions of the Week and Winners (03/06/2018)

Last week, we presented some questions on structural mechanics, and we wish to publish the answers and congratulate the winners.

Monday (28/05/2018)
We were required to obtain the column moment of the frame loaded as shown below.

We can simply obtain this by summing up the moment at point B due to the externally applied;

Let anticlockwise moment be negative;
MBBelow = (-2 × 2) + (6 × 2.5) = 11 kNm
It is as simple as that. So the correct option A.

Those that got the answers correct are;

• Ogundare Folahanmi
• Guiseppe Martino Erbi
• Romel Batongbakal
• Ajit umar Mohanty
• Abdul Basheer
• Shrujal Barvaliya
• Ovie Agbaga
• Peter O.
A big congratulations to you all for contributing to knowledge and undersyanding.
Wednesday (30/05/2018)
We were required to plot the bending moment of the frame shown below due to the applied unit load;
The frame is statically determinate and stable.
Therefore the moment at point C due to the load at point C is given by;
MC = (1 × 3.0) = 3.0 kNm
This moment of 3 kNm acts as a couple from point C and goes all the way down to point B.

The moment at point A is given by;
MA = (1 × 11) = 11.0 kNm

Therefore, the correct option is A.

Those that got the answer correct are;

• Guiseppe Martino Erbi
• Romel Sevilla Batongbakal
• Feyisetan Kwasima
• Ajit Kumar Mohanty
• Charles
• Palo Tuleja
• Shrujal Barvaliya
• Shah Ezud Din
• Ovie Agbaga
• Peter O.
A big congratulations to you all.

Friday (01/06/2018)
We are to calculate the deflection of the structure by considering the main moment diagram and unit state diagram.
Solution;
Deflection = 1/4 × 6 × 2× 2 = 6/EI metres
Those that got the answers correct are;
• Ogunleye Emmanuel
• Mezie Ethelbert
• Giuseppe Martino Erbi
• Romel Sevilla Batongbakal
• Ovie Agbaga
Winners
From the rules of the competition, the winners for the week are as follows;