List of top Structural Engineering Questions

The following figure shows a plot between shear stress and velocity gradient for materials/fluids P, Q, R, S, and T.
a plot between shear stress and velocity gradient
Which one of the following options is CORRECT?
The structural design method that DOES NOT take into account the safety factors on the design loads is
Consider the following data for a project of 300 days duration.
Budgeted Cost of Work Scheduled (BCWS) = Rs. 200
Budgeted Cost of Work Performed (BCWP) = Rs. 150
Actual Cost of Work Performed (ACWP) = Rs. 190
The 'schedule variance' for the project is
Consider the statements P and Q.
P : In a Pure project organization, the project manager maintains complete authority and has maximum control over the project.
Q : A Matrix organization structure facilitates quick response to changes, conflicts, and project needs.
Which one of the following options is CORRECT ?
A slab panel with an effective depth of 250 mm is reinforced with 0.2% main reinforcement using 8 mm diameter steel bars. The uniform center-to-center spacing (in mm) at which the 8 mm diameter bars are placed in the slab panel is _____ (rounded off to the nearest integer).
The plane truss shown in the figure has 13 joints and 22 members. The truss is made of a homogeneous, prismatic, linearly elastic material. All members have identical axial rigidity. A to M indicate the joints of the truss. The truss has pin supports at joints A and L and roller support at joint K. The truss is subjected to a 10 kN vertically downward force at joint H and a 10 kN horizontal force in the rightward direction at joint B as shown.
The plane truss shown in the figure has 13 joints and 22 members
The magnitude of the reaction (in kN) at the pin support Lis (rounded off to 1 decimal place).
A homogeneous shaft PQR with fixed supports at both ends is subjected to a torsional moment T at point Q, as shown in the figure. The polar moments of inertia of the portions PQ and QR of the shaft with circular cross-sections are \(J_1\) and \(J_2\), respectively. The torsional moment reactions at the supports P and R are \(T_p\) and \(T_R\), respectively.
homogeneous shaft
If \(\frac {T_p}{T_R} = 4\) and \(\frac {J_1}{J_2} = 2\), the ratio of the lengths \(\frac {L_1}{L_2}\) is
The elements that DO NOT increase the strength of structural steel are
Consider a balanced doubly-reinforced concrete section. If the material and other sectional properties remain unchanged, for which of the following cases will the section becomes under-reinforced?
Consider the statements P and Q.
P: Client's Preliminary Estimate is used for budgeting costs toward the end of planning and design phase.
Q: Client's Detailed Estimate is used for controlling costs during the execution of the project.
Which one of the following options is CORRECT?
Consider the beam shown in the figure (not to scale), on a hinge support at end A and a roller support at end B. The beam has a constant flexural rigidity and is subjected to the external moments of magnitude \( M \) at one-third spans, as shown in the figure. Which of the following statements is/are TRUE? \includegraphics[width=0.5\linewidth]{image8.png}

A horizontal force of P kN is applied to a homogeneous body of weight 25 kN, as shown in the figure. The coefficient of friction between the body and the floor is 0.3. Which of the following statement(s) is/are correct? 

The plane truss shown in the figure is subjected to an external force \( P \). It is given that \( P = 70 \, \text{kN} \), \( a = 2 \, \text{m} \), and \( b = 3 \, \text{m} \). 

The magnitude (absolute value) of force in member EF is \(\underline{\hspace{1cm}}\) (round off to the nearest integer).

A semi-circular bar of radius R m, in a vertical plane, is fixed at the end G, as shown in the figure. A horizontal load of magnitude P kN is applied at the end H. The magnitude of the axial force, shear force, and bending moment at point Q for \(\theta = 45^\circ\), respectively, are 
 

A weld is used for joining an angle section ISA 100 mm \(\times\) 100 mm \(\times\) 10 mm to a gusset plate of thickness 15 mm to transmit a tensile load. The permissible stress in the angle is 150 MPa and the permissible shear stress on the section through the throat of the fillet weld is 108 MPa. The location of the centroid of the angle is represented by \( C_{yy} \) in the figure, where \( C_{yy} = 28.4 \, \text{mm} \). The area of cross-section of the angle is 1903 mm\(^2\). Assuming the effective throat thickness of the weld to be 0.7 times the given weld size, the lengths \( L_1 \) and \( L_2 \) (rounded off to the nearest integer) of the weld required to transmit a load equal to the full strength of the tension member are, respectively 
 

The project activities are given in the following table along with the duration and dependency. \[ \begin{array}{|c|c|c|} \hline \text{Activities} & \text{Duration (days)} & \text{Depends on} \\ \hline P & 10 & - \\ Q & 12 & - \\ R & 5 & P \\ S & 10 & Q \\ T & 10 & P, Q \\ \hline \end{array} \] Which one of the following combinations is correct?

Consider the cross-section of a beam made up of thin uniform elements having thickness \( t \) (where \( t \ll a \)) shown in the figure. The (x, y) coordinates of the points along the center-line of the cross-section are given in the figure. The coordinates of the shear center of this cross-section are: 

A reinforced concrete beam with rectangular cross section (width = 300 mm, effective depth = 580 mm) is made of M30 grade concrete. It has 1% longitudinal tension reinforcement of Fe 415 grade steel. The design shear strength for this beam is 0.66 N/mm\(^2\). The beam has to resist a factored shear force of 440 kN. The spacing of two-legged, 10 mm diameter vertical stirrups of Fe 415 grade steel is \(\underline{\hspace{2cm}}\) mm. (round off to the nearest integer)
Consider the linearly elastic plane frame shown in the figure. Members HF, FK, and FG are welded together at joint F. Joints K, G, and H are fixed supports. A counter-clockwise moment \( M \) is applied at joint F. Consider flexural rigidity \( EI = 10^5 \, \text{kN-m}^2 \) for each member and neglect axial deformations. \includegraphics[width=0.35\linewidth]{image51.png} If the magnitude (absolute value) of the support moment at H is 10 kN-m, the magnitude (absolute value) of the applied moment \( M \) (in kN-m) to maintain static equilibrium is \(\underline{\hspace{1cm}}\) (round off to the nearest integer).
Consider a simply supported beam PQ as shown in the figure. A truck having 100 kN on the front axle and 200 kN on the rear axle, moves from left to right. The spacing between the axles is 3 m. The maximum bending moment at point R is \(\underline{\hspace{2cm}}\) kNm. (in integer)
\includegraphics[width=0.5\linewidth]{image52.png}
Which of the following equations is correct for the Pozzolanic reaction?
The hoop stress at a point on the surface of a thin cylindrical pressure vessel is computed to be 30.0 MPa. The value of maximum shear stress at this point is
In the context of elastic theory of reinforced concrete, the modular ratio is defined as the ratio of
The linearly elastic planar structure shown in the figure is acted upon by two vertical concentrated forces. The horizontal beams UV and WX are connected with the help of the vertical linear spring with spring constant k = 20 kN/m. The fixed supports are provided at U and X. It is given that flexural rigidity \( EI = 10^5 \) kN-m², P = 100 kN, and a = 5 m. Force \( Q \) is applied at the center of beam WX such that the force in the spring VW becomes zero. The magnitude of force \( Q \) (in kN) is _________ \text{ kN}. (round off to the nearest integer)
Consider two linearly elastic rods HI and IJ, each of length b, as shown in the figure. The rods are co-linear, and confined between two fixed supports at H and J. Both the rods are initially stress free. The coefficient of linear thermal expansion is \( \alpha = 10^{-6} \, \degree C^{-1} \), and the temperature of rod IJ is raised by \( \Delta T = 50 \degree C \, \text{, whereas the temperature of rod HI remains unchanged. An external horizontal force P is now applied at node I. It is given that the axial rigidities of the rods HI and IJ are 2AE and AE, respectively.