The heaviest I-section for same depth is

Bending compressive and tensile stresses respectively are calculated based on

If the thickness of thinnest outside plate is 10 mm, then the maximum pitch of rivets in tension will be taken as

In a gusseted base, when the end of the column is machined for complete bearing on the base plate, then the axial load is assumed to be transferred to base plate

When the axis of load lies in the plane of rivet group, then the rivets are subjected to

When the axis of load lies in the plane of rivet group, then the most heavily loaded rivet will be the one which where, Fa is the load shared by each rivet due to axial load and Fm is the shearing load due to moment in any rivet.

Which of the following types of riveted joint is free from bending stresses ?

The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter is

As compared to field rivets, the shop rivets are

If the thickness of plate to be connected by a rivet is 16 mm, then suitable size of rivet as per Unwin’s formula will be

By providing sufficient edge distance, which of the following failures of riveted joint can be avoided ?

Minimum pitch of the rivets shall not be less than where d is gross diameter of rivet

Efficiency of a riveted joint, having the minimum pitch as per IS : 800, is

Select the correct statement

Bolts are most suitable to carry

Diameter of a bolt hole is usually taken as

When the bolts are subjected to reversal of stresses, the most suitable type of bolt is

In the cross-section of a weld, throat is the

The effective length of a fillet weld should not be less than

For a standard 45° fillet, the ratio of size of fillet to throat thickness is

A butt weld is specified by

The actual thickness of butt weld as compared to the thickness of plate is usually

According to IS Specifications, the maximum pitch of rivets in compression is where t is thickness of thinnest outside plate or angle

A circular column section is generally not used in actual practice because

The slenderness ratio of a column supported throughout its length by a masonry wall is

According to IS Specifications, the effective length of a column effectively held in position at both ends and restrained in direction at one end is taken as

The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as

The maximum slenderness ratio of a compression member carrying both dead and superimposed load is

The maximum slenderness ratio of a steel column, the design of which is governed by wind or seismic forces is

According to IS:800, in the Merchant Rankine formula the value of imperfection index (n) is

The best arrangement to provide unified behaviour in built up steel columns is by

If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be

The use of tie plates in laced columns is

Lacing bars in a steel column should be designed to resist

Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between

Battening is preferable when the ) column carries axial load only i) space between the two main components is not very large ii) column is eccentrically loaded The correct answer is

The effective length of a battened column is increased by

The overlap of batten plates with the main members in welded connections should be more than where t = thickness of the batten plate

The slenderness ratio of lacing bars should not exceed

Economical depth of a plate girder corresponds to

Shear buckling of web in a plate girder is prevented by using

Horizontal stiffener in a plate girder is provided to safeguard against

Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is

The web crippling due to excessive bearing stress can be avoided by

As per IS : 800, for compression flange, the outstand of flange plates should not exceed where t = thickness of thinnest flange plate

Intermediate vertical stiffeners in a plate girder need be provided if the depth of web exceeds where t is thickness of web

Bearing stiffener in a plate girder is used to

The forces acting on the web splice of a plate girder are

Gantry girders are designed to resist

Minimum spacing of vertical stiffeners is limited to where d is the distance between flange angles

Bearing stiffeners are provided at ) the supports i) the mid span ii) the point of application of concentrated loads The correct answer is

Rivets connecting flange angles to cover plates in a plate girder are subjected to

The maximum spacing of vertical stiffeners is where d is the distance between flange angles

The range of economical spacing of trusses varies from

The maximum permissible span of asbestos cement sheets is

Normally, the angle of roof truss with asbestos sheets should not be less than

To minimize the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall be

Generally the purlins are placed at the panel points so as to avoid

For the buildings having a low permeability, the internal wind pressure acting normal to the wall and roof surfaces is taken as where p is basic wind pressure

The relation between intensity of wind pressure p and velocity of wind V is taken as

The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as

The internal pressure coefficient on walls for buildings with large permeability is taken as

The basic wind speed is specified at a height ‘h’ above mean ground level in an open terrain. The value of’h’ is

The risk coefficient k, depends on

The external wind pressure acting on a roof depends on

Area of openings for buildings of large permeability is more than

As per IS : 875, for the purposes of specifying basic wind velocity, the country has been divided into

The number of seismic zones in which the country has been divided are

Minimum pitch provided in riveted steel tanks is where d is diameter of rivets

The allowable tensile stress in structural mild steel plates for steel tank is assumed as

Steel tanks are mainly designed for

Which of the following sections should preferably be used at places where torsion occurs ?

The capacity of the smallest pressed steel tank is

The bracing between two columns of a steel tank will be designed to resist

The minimum thickness of plates in a steel stack should be

Maximum pitch of rivets, used in steel stacks, is limited to where t is thickness of thinner plate being connected

The diameter of base of conical flare of a steel stack is where d is the diameter of the cylindrical part

Hudson’s formula gives the dead weight of a truss bridge as a function of

If the loaded length of span in meters of a railway steel bridge carrying a single track is 6 m, then impact factor is taken as

If the floor is supported at or near the bottom but top chords of a bridge are not braced, then the bridge is called

The centrifugal force due to curvature of track is assumed to act on the bridge at a height of

The effect of racking forces is considered in the design of i) lateral braces ii) chord members The correct answer is

The portal bracing in a truss bridge is used to

The sway bracing is designed to transfer

Study the following statements. i) Top lateral bracing prevents the sidesway buckling of the chord. ii) Sway bracing keeps the rectangular shape of the bridge cross-section. iii) Sway bracing transfers the load from top of end posts to bearings. The correct answer is

The bracing provided in the plane of end posts is called

compression force in two end posts The pin of a rocker bearing in a bridge is designed for

The least dimension in case of a circular column of diameter D is taken as

In case of timber structures, the form factor for solid circular cross-section is taken as

In case of timber structures, the simple bending formula M = fz may be applied for

The elastic strain for steel is about

The mechanism method and the statical method give

The moment-curvature relation at a plastic hinge is

Shape factor is a property which depends

The statical method of plastic analysis satisfies

The mechanism method of plastic analysis satisfies

Load factor is

The ratio of plastic section modulus to elastic section modulus

Other conditions being same, the load factor in indeterminate structures is

. Which of the following conditions is to be satisfied both in elastic and plastic analysis ?

. In the virtual work method, the virtual quantity is

. As per IS:800, in the plastic design, which of the following pairs are correctly matched? orking Loads Load factor i) Dead load 1.7 ii) Dead Load + imposed load 1.7 iii) Dead load + load due to wind or 1.3 seismic forces iv) Dead load + imposed load + load 1.7 ue to wind or seismic forces Of these statements

. The shape factor of an isosceles triangle for bending about the axis parallel to the base is:

. In case of plastic design, the calculated maximum shear capacity of a beam as per IS:800 shall be where, Aw = effective cross-sectional area resisting shear fy = yield stress of the steel

. The minimum thickness of a steel plate, which is directly exposed to weather and is not accessible for cleaning and repainting, should be:

. The moment of inertia of the pair of vertical stiffeners about the center line of the web should not be less than. where, ‘t’ is the minimum required thick-ness of the web and ‘C is the maximum permitted clear distance between vertical stiffener for thickness ‘t’.

. The connection of intermediate vertical stiffeners to the web, not subjected to external loads, shall be designed for a minimum shear force (kN/m) of where, t = the web thickness in mm h = the outstand of stiffener in mm

. For a compression member with double angle section, which of the following section will give larger value of minimum radius of gyration?

. Lug angles

. For rivets in tension with counter-sunk heads, the tensile value shall be

. A steel beam supporting loads from the floor slab as well as from wall is termed as

. Pitch of tacking rivets, when double angles connected back to back and acting as tension members should not be more than

. In moment resistant connections, the moment resistance of riveted connection depends upon

. The allowable shear stress in the web of mild steel beams decreases with where ‘h’ is height and t is thickness