GTU 3150612 Design of Structures Winter 2025 Question Paper & PDF

Differentiate the limit state method and working stress method of design for Reinforced Cement Concrete structures.

The balanced sections are most preferred over Under-reinforced section and Over- reinforced section. Justify the statement. Also mention which type of section is avoided in design of singly reinforced beam with suitable reason.

A RCC beam section having 230 mm X 500 mm cross section with effective cover of 40 mm in both sides reinforced with 2 Nos 16 mm diameter bars as compression reinforcement and 4 Nos 20 mm diameter bars as tension reinforcement designed using grade M20 and steel with Fe 500 grade. Calculate the Moment of Resistance.

Two plates of thickness 10 mm and 12 mm are connected using HSFG 8.8 grade bolts of 22 mm diameter. Calculate the proof load.

Calculate the design shear force for the bolt designed in Q. 2(a) if slip resistance is designed at ultimate load and assume fasteners in clearance holes. (Take coefficient of friction = 0.5, number of effective interfaces offering frictional resistance to slip =

A pipe of 120 mm diameter and 8 mm thickness is connected to 16 mm thick plate with fillet weld done along its perimeter. The weld is subjected to combined loading and it is found that resultant shear stress of magnitude 150/te N/mm² and bending stress of magnitude 500/te N/mm² are acting on the weld, where te is effective throat thickness. Find the minimum size of the fillet weld. (Consider Fe 410 grade of steel and shop welding; coefficient for effective throat thickness, K = 0.7)

A T-beam is having the following dimension: width of flange, bf = 1000mm; depth of flange, Df = 125mm, width of web, bw = 250 mm overall depth of beam, D = 250 mm. The concrete grade is M 20 and the grade of reinforcing steel is Fe 415. The clear cover is 25 mm. Considering a balanced section having 20 mm bars, Calculate the area of reinforcement and moment of resistance.

Calculate the minimum number of bolts required to connect the outstanding leg of lug angle to outstanding leg of main angle if load on outstanding leg of main member is 120 kN and bolt value is 36 kN.

A perfectly axially loaded concrete column of gross dimension 400mm × 400mm is reinforced with 4 bars of 20mm diameter. Determine the design axial load carrying capacity of the column. Consider M25 grade concrete and Fe415 grade steel.

For a RC footing ratio of its long side to short side is 1.5. Calculate the ratio of reinforcement to be provided in the central band width to total reinforcement in the short direction.

A square isolated footing for a square column of size 350mm × 350mm is made to transfer the characteristic load, P= 600kN to the ground. Consider weight of footing as 10% of the characteristic axial load. The safe bearing capacity of soil is 150 kN/m². Calculate the dimension of the square footing.

A slab base is used for a column to transfer a factored load of 1200 kN and this load causes intensity of pressure 7.4 MPa on base plate from concrete pedestal. If larger and smaller projection are 75 mm and 50 mm respectively of the slab base beyond the rectangle circumscribing the column, find the minimum thickness of base plate. (Consider flange thickness of the compression member as 14.1 mm and Fe410 grade of steel)