Calculate the ultimate axial load capacity of a round spiral column having a diameter of 450mm reinforced with six 25mm bars having fy=276 MPa.

Assume fc’ = 34MPa.

Figure Q5(a) shows a continuous reinforced concrete beam of three equal spans 8 m
each. The beam carries uniformly distributed load over its entire span which consists of
characteristic dead load (including self-weight) of 25.0 kN/m and characteristic imposed
load of 10.0 kN/m. The beam cross section with the designed reinforcement is shown in
Figure Q5(b). The construction materials used in the design are Grade C35 concrete and
Grade 500 steel reinforcement. The nominal concrete cover to links is 30 mm, while the
elastic modulus of concrete and steel are 33 kN/mm2
and 200 kN/mm2
respectively. The
estimated creep coefficient is 2.3 and the final shrinkage strain is 280 x10-6
.
Calculate the long term deflection of the beam at mid span A-B at serviceability limit
states.
 

1. The building section associated with the floor plan in Figure 3.1 is shown in Figure 3.2. Assume a live load of 2.90 kPa on all three floors. Calculate the axial forces produced by the live load in column C3 in the third and first stories. Consider any live load reduction if permitted.

Note: Assume the top-level (elevation 11.10m from ground level) as a typical floor level.

Calculate the work done in pushing a chair to a distance of 3 meters with an average force of 20 Newton.