Structural Analysis

For stable structures, one of the important properties of flexibility and stiffness matrices is that the elements on the main diagonal (i) Of a stiffness matrix must be positive (ii) Of a stiffness matrix must be negative (iii) Of a flexibility matrix must be positive (iv) Of a flexibility matrix must be negative The correct answer is

Study the following statements. i) The displacement method is more useful when degree of kinematic indeterminacy is greater than the degree of static indeterminacy. ii) The displacement method is more useful when degree of kinematic indeterminacy is less than the degree of static indeterminacy. iii) The force method is more useful when degree of static indeterminacy is greater than the degree of kinematic indeterminacy. iv) The force method is more useful when degree of static indeterminacy is less than the degree of kinematic indeterminacy. The correct answer is

Muller Breslau’s principle for obtaining influence lines is applicable to i) trusses ii) statically determinate beams and frames iii) statically indeterminate structures, the material of which is elastic and follows Hooke’s law iv) any statically indeterminate structure The correct answer is

In the slope deflection equations, the deformations are considered to be caused by i) bending moment ii) shear force iii) axial force The correct answer is

Select the correct statement

A simply supported beam deflects by 5 mm when it is subjected to a concentrated load of 10 kN at its centre. What will be deflection in a 1/10 model of the beam if the model is subjected to a 1 kN load at its centre ?

The deflection at any point of a perfect frame can be obtained by applying a unit load at the joint in

Independent displacement components at each joint of a rigid-jointed plane frame are

The thickness of the rectangular plate for the cap or base of a solid round steel columns, is calculated from the formula $${ ext{t}} = sqrt {frac{{9{ ext{W}}}}{{16{{ ext{f}}_{{ ext{bct}}}}}} imes frac{{ ext{D}}}{{{ ext{D}} - { ext{d}}}}} $$ xa0 xa0 where 'd' is

While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of

The effective length of lacing is the distance

For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust

For a symmetrical two hinged parabolic arch, if one of the supports settles horizontally, then the horizontal thrust

If the main reinforcement of the slab is parallel to a T-beam, the transverse reinforcement at mid span of the slab is provided at least __________ of main reinforcement.

The deformation of a spring produced by a unit load is called

The number of independent equations to be satisfied for static equilibrium of a plane structure is

To generate the j th column of the flexibility matrix

The three moments equation is applicable only when

The Castigliano's second theorem can be used to compute deflections

Bending moment at any section in a conjugate beam gives in the actual beam

A load W is moving from left to right support on a simply supported beam of span T. The maximum bending moment at 0.4 1 from the left support is

Effects of shear force and axial force on plastic moment capacity of a structure are respectively to

The principle of virtual work can be applied to elastic system by considering the virtual work of

Pick up the correct statement for the web stiffeners.

Number of unknown internal forces in each member of a rigid jointed plane frame is

The number of independent displacement components at each joint of a rigid-jointed space frame is

The slenderness effect of a wall is considered if the effective height of the wall exceeds the thickness

The test strength of the sample is taken as the average of the strength of

Degree of kinematic indeterminacy of a pin-jointed plane frame is given by

If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by

The minimum horizontal distance between two parallel main reinforcing bars, is

A single rolling load of 8 kN rolls along a girder of 15 m span. The absolute maximum bending moment will be

If in a pin-jointed plane frame (m + r) > 2j, then the frame is (Where ‘m’ is number of members, ‘r’ is reaction components and ‘j’ is number of joints)

A rigid-jointed plane frame is stable and statically determinate if (where m is number of members, r is reaction components and j is number of joints)

A pin-jointed plane frame is unstable if (where m is number of members, r is reaction components and j is number of joints)

The degree of static indeterminacy of a pin-jointed space frame is given by (where m is number of unknown member forces, r is unknown reaction components and j is number of joints)

The degree of static indeterminacy up to which column analogy method can be used is

When a load crosses a through type Pratt truss in the direction left to right, the nature of force in any diagonal member in the left half of the span would

Pick up the incorrect statement from the following:

The number of independent equations to be satisfied for static equilibrium in a space structure is

For a single point load W moving on a symmetrical three hinged parabolic arch of span L, the maximum sagging moment occurs at a distance x from ends. The value of x is

If in a rigid-jointed space frame, (6m + r) < 6j, then the frame is

Pick up the correct statement applicable to cased columns.

In column analogy method, the area of an analogous column for a fixed beam of span L and flexural rigidity E$$I$$ is taken as

For under water concreting.

In moment distribution method, the sum of distribution factors of all the members meeting at any joint is always

Which of the following is not the displacement method?

Which of the following methods of structural analysis is a displacement method?

The carryover factor in a prismatic member whose far end is fixed is

The degree of kinematic indeterminacy of a pin-jointed space frame is (where m, r and j have their usual meanings)

The degree of static indeterminacy of a rigid-jointed space frame is (where m, r and j have their usual meanings)

Castigliano’s first theorem is applicable

Which of the following methods of structural analysis is a force method?

Principle of superposition is applicable when

The effective and actual lengths of a cantilever are same if continuous at the support,

When a uniformly distributed load, longer than the span of the girder, moves from left to right, then the maximum bending moment at mid section of span occurs when the uniformly distributed load occupies

Degree of static indeterminacy of a rigid-jointed plane frame having 15 members, 3 reaction components and 14 joints is

For heavily reinforced concrete member, the nominal maximum size of the aggregates should be restricted to

The fixed support in a real beam becomes in the conjugate beam a

When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when

The maximum bending moment due to a train of wheel loads on a simply supported girder

When a uniformly distributed load, shorter than the span of the girder, moves from left to right, then the conditions for maximum bending moment at a section is that

In the displacement method of structural analysis, the basic unknowns are

If the specified thickness of a footing is 100 cm, the depth of the form work may be tolerated from

For the stability of a structural part, the weight or anchorage should be

The width of the analogous column in the method of column analogy is