Deflection-problems-for-practice.pdf

“Call to me and I will answer you and tell you great and unsearchable things you do not know.” – Jeremiah 33:3 DEFLECTION Compute for the net immediate deflection at midspan of the simply supported beam (cross section shown below) of span 10m loaded with DL= 8 kN/m and concentrated DL1 of 20 kN located 2.5m from the left support and DL2=20 kN located 2.5m from the right support. The beam is made up of normal density concrete (unit weight = 24 kN/m3) with f’c= 35 MPa and is pretensioned with initial prestressing force of 800 kN. If the net deflection at midspan is not equal to zero, compute for the superimposed uniformly distributed load to bring the beam level to its supports.

e = 200

e = 200

600

150

es = 50 em = 200

100

300 es = 50 em = 200 100

250 e = 200 2m

2m

e = 200 1.5 m

1.5 m es = 50 em = 200

1.5 m

1.5 m