UPSC Civil Engineering 2025

(a) Draw the free body diagram of link ABCD and determine all reaction forces acting at A, B, C and D of the assembly shown in the figure. (All dimensions are in mm.) 10 marks (b)…

(a) A T-section beam is constructed by gluing two pieces of wood together as shown in the figure. The maximum stress in the glue joints is to be limited to 2 MPa in tension and ma…

(a) Analyse the continuous beam shown in the figure by slope-deflection method. Draw the Shear Force Diagram (SFD) and Bending Moment Diagram (BMD). Also calculate point of contra…

(a) Analyse the frame shown in the figure by the moment distribution method. Draw the Bending Moment Diagram (BMD). Joints 'B' and 'C' are rigid; 'A' and 'D' are fixed. 20 marks (…

(a) A rigid body having dimensions of 0·6 m wide, 0·9 m high and 1·2 m long weighs 10 kN when submerged in water. What will be its weight and density in air ? (Assume specific wei…

(a) The discharge Q over a small rectangular weir depends on head H over the weir, the weir height P, gravity g, width of the weir L and fluid properties : density ρ, dynamic visc…

(a) A braced cut 7·0 m deep and 3·0 m wide is proposed in a cohesionless sand deposit. Assume that the first row of struts to be located at 0·5 m below ground level and the spacin…

(a) The consolidated undrained (CU) tests were performed on the four over-consolidated clay samples obtained from a site. The pre-consolidation pressure was 650 kN/m². The results…

(a) Briefly discuss why it is more advantageous to use high strength concrete for construction of high-rise buildings and large-span bridges as compared to normal strength concret…

(a) A contractor intends to bid for erecting a statue at a square in an urban area. The various activities of the entire project are given below : | Activity | Activity Name | Rem…

(a) (i) Observations were made with a theodolite from the points A and B of baseline AB having horizontal length of 200 m to the two inaccessible points P and Q at the same side o…

(a) Compare the application of 'straight blade' and 'angle blade' of bulldozers for earthwork in a construction project. Determine the unit cost (₹/m³) for pushing the soil by a b…

(a) A box culvert has an expected life of 10 years. (i) If the acceptable risk of at least one event exceeding the culvert capacity during the design life is 5 percent, what desig…

(a) A storm over a catchment of area 5 km² had a duration of 14 hours. The mass curve of rainfall of the storm is as follows: | Time from Start of Storm, t (h) (1) | Accumulated R…

(a) The data related to the activated sludge process is given below: Population = 500000 Wastewater contribution = 150 lpcd BOD of settled wastewater = 200 mg/L Effluent BOD requi…

(a) The figure shows an overflow spillway which is 40 m high. At the design energy head of 2·5 m over the spillway, determine— (i) the sequent depths; (ii) the energy loss; (iii)…