A simply supported beam deflects by 5 mm when it is subjected to a concentrated load of 10 kN at its centre. What will be deflection in a 1/10 model of the beam if the model is subjected to a 1 kN load at its centre ?
A. 5 mm
B. 0.5 mm
C. 0.05 mm
D. 0.005mm
Answer: Option A

For each 1/10 have a force 1kN
So for 10/10 will have a 10 kN
The deflection will be 5mm
For each 1/10 have a force 1kN
So for 10/10 will have a 10 kN
The deflection will be 5mm
PL^3/48EI P and L becomes 1/10 and b and d becomes 1/10 so deflection remains the same
•0005
how
If the specified thickness of a footing is 100 cm, the depth of the form work may be tolerated from
0.05*100=5cm how 0.05