Select the correct statement

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

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

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

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

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

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

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

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

The elastic strain for steel is about

In the virtual work method, the virtual quantity is

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

The portal bracing in a truss bridge is used to

The maximum permissible span of asbestos cement sheets is

Lacing bars in a steel column should be designed to resist

The moment of the couple set up in a section of a beam by the longitudinal compressive and tensile force, is known as

The thickness of the web of a mild steel plate girder is less than d/200. If only one horizontal stiffener is used, it is placed at

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

The most commonly used sections in lateral system to carry shear force in built up columns, are

The stress in the wall of a thin cylinder subjected to internal pressure, is

The risk coefficient k, depends on

For eccentrically loaded columns, the bending factor is

The net area of round bars to resist the tension, is the area of cross section at

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

A column splice is used to increase

A beam may be designed as a cased beam if

The bracing provided in the plane of end posts is called

In a built up beam actual bending compressive stress fbc is given by (when y is the distance of the edge of the beam from the neutral axis).

If the thickness of a structural member is small as compared to its length and width, it is classified as

The statical method of plastic analysis satisfies

Lug angle is

Compression members composed of two channels back-to-back and separated by a small distance are connected together by riveting so that the minimum slenderness ratio of each member between the connections, does not exceed

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 and h = the outstand of stiffener in mm

When the upper column does not provide full bearing area over lower column, the column splice is provided with the following assumption

For the economical design of a combined footing to support two equal column loads, the projections of beams in lower tier are kept such that bending moment under column is equal to

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

On eccentrically loaded columns, the equivalent axial load may be obtained by

Stiffeners are used in a plate girder

As compared to field rivets, the shop rivets are

A fillet weld whose axis is parallel to the direction of the applied load, is known as

In a truss girder of a bridge, a diagonal consists of mild steel flat 4001.S.F. and carries a pull of 80 tonnes. If the gross-diameter of the rivet is 26 mm, the number of rivets required in the splice, is

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

Factor of safety is the ratio of

The size of a butt weld is specified by the effective throat thickness which in the case of incomplete penetration, is taken as

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

The ratio of shearing stress to shearing strain within elastic limit, is known as

In a built up section carrying a tensile force, the flanges of two channels are turned outward

The overlap of batten plates with the main members in welded connections should be more than

Modified moment of inertia of sections with a single web, is equal to moment of inertia of the section about Y-Y axis at the point of maximum bending moment and is multiplied by the ratio of

Gantry girders are designed to resist

The distance between e.g. of compression and e.g. of tension flanges of a plate girder, is known as

The effective length of a compression member of length L held in position at both ends but not restrained in direction, is

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

Pick up the correct statement from the following:

Design of a riveted joint is based on the assumption:

Steel tanks are mainly designed for

The cross-section of a standard fillet is a triangle whose base angles are

If N is the number of rivets in the joint, the strength of a riveted joint against shearing of rivets, is given by

The sway bracing is designed to transfer

Column footing is provided

Cold driven rivets range from

The mechanism method of plastic analysis satisfies

Rolled steel beams are designated by Indian Standard series and its

When plates are exposed to weather, tacking rivets are provided at a pitch in line not exceeding (where t is the thickness of the outside plate).

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

Pick up the correct statement from the following:

The gross section of the web of a beam is defined as

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

For a steel grillage footing to support two unequal column loads

In a tension member if one or more than one rivet holes are off the line, the failure of the member depends upon:

The heaviest I-section for same depth is

The effective length of a compression member of length L, held in position and restrained in direction at both ends, is

Efficiency of a riveted j’oint is defined as the ratio of

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

The maximum tensile and compressive bending stress in extreme fibres of rolled I-sections and channels on the effective section, is

When the ratio of the moment M to axial load P is greater than L/6, the resultant of the compressive bearing pressure which acts at a distance Y from one side, is given by

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

The safe working pressure for a spherical vessel 1.5 m diameter and having 1.5 cm thick wall not to exceed tensile stress 50kg/cm2, is

Rise of a Jack arch is kept about

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

For a steel member of slenderness ratio 350, the allowable stress is 76 kg/cm2 if it is

The main type of butt joints, is a double cover

Bearing stiffener in a plate girder is used to

The central deflection of a simply supported steel beam of length L with a concentrated load W at the centre, is

If d is the distance between the flange angles,

Area of openings for buildings of large permeability is more than

In case horizontal stiffeners are not used, the distance between vertical legs of flange angles at the top and bottom of a plate girder, is known as

Pick up the correct statement from the following:

The diameter of base of conical flare of a steel stack is

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

The effective length of a compression member of length L held in position and restrained in direction at one end and effectively restrained in direction but not held in position at the other end, is

Working shear stress on the gross area of a rivet as recommended by Indian Standards, is

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

The critical load for a column of length I hinged at both ends and having flexural rigidity El, is given by

Length of an outstanding leg of a vertical stiffener, may be taken equal to

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

If the depth of two column sections is equal, then the column splice is provided

On steel structures the dead load is the weight of

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

The area Ap of cover plates in one flange of a built up beam, is given by

The economical depth d of a web plate in which allowable bearing stress is fb, and the maximum bending moment is M, as suggested by Rawater and Clark, is

Bending compressive and tensile stresses respectively are calculated based on

The thickness t of a single flat lacing should not be less than

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

Tongue plates are provided in a steel girder at

For steel members exposed to weather and not accessible for repainting, the thickness of steel should not be less than

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

The main assumption of the method of simple design of steel frame work, is:

Outstanding length of a compression member consisting of a channel, is measured as

The use of tie plates in laced columns is

According to IS : 800-1962 the permissible bending stress in steel slab plates, is

The side thrust T on the tie rods provided at the end beam of jack arch of rise R, is calculated from the formula

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

The minimum pitch of rivet holes of diameter d should not be less than

Design of a riveted joint, is based on the assumption:

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

If f7 is the maximum allowable bending stress in a tension member whose radius of gyration is ‘r’ and depth is 2y, the required cross sectional area ‘A7 is given by

The load on a lintel is assumed as uniformly distributed if the height of the masonry above it, is upto a height of

Maximum pitch of rivets, used in steel stacks, is limited to

Diameter of a rivet hole is made larger than the diameter of the rivet by

According to IS: 800-1962, the coefficient of expansion of steel per degree centigrade per unit length, is taken as

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

Perforated cover plates are particularly suitable for built up sections consisting of

If R is the reaction on the bearing plate, the minimum moment of. inertia of the bearing stiffener provided at the support of a plate girder of overall depth D, the maximum thickness of the compression flange T, carrying total load W, is

As per IS: 800, in the plastic design, which of the following pairs are correctly matched?
Working 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 due to wind or seismic forces Of these statements

Effective length of a column effectively held in position and restrained in direction at both ends, is

Pick up the correct statement from the following:

For rivets in tension with countersunk heads, the tensile value shall be

Effective length of a column effectively held in position and restrained in direction at one end but neither held in position nor restrained in direction at the other end, is

The equivalent axial load may be defined as the load which produces a stress equal to

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

The connection of one beam to another beam by means of an angle at the bottom and an angle at the top, is known as

The channels get twisted symmetrically with regard to its axis

Bolts are most suitable to carry

Rolled steel angle sections are classified as

According to I.S.: 800 – 1871, lacing bars resist transverse shear equal to

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

The method of design of steel framework for greatest rigidity and economy in weight, is known as

For a cantilever beam of length ‘L’ built-in at the support and restrained against torsion at the free end, the effective projecting length T is

Economical depth of a plate girder corresponds to

Slenderness ratio of a compression member is

The least permissible clear dimension of the web of thickness t in the panel of a plate girder, is restricted to

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

Web crippling generally occurs at the point where

Pick up the correct statement from the following:

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

If d is the distance between the flange angles, the vertical stiffeners in plate girders are spaced not greater than

If d is the distance between the flange angles of a plate girder, vertical stiffeners are provided at a distance not greater than

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

A second horizontal stiffener is always placed at the neutral axis of the girder if the thickness of the web is less than

The strength of ISA 125 = 75 x 10 mm used as a tie member with its longer leg connected at the ends by 27 mm diameter rivets, is

The effect of racking forces is considered in the design of
(i)      Lateral braces
(ii)      Chord members The correct answer is

For a column of height fixed in position and direction both at its top and bottom, its effective length, is

As per ISI, rolled steel beam sections are classified into

Shape factor is a property which depends

A tension member, if subjected to possible reversal of stress due to wind, the slenderness ratio of the member should not exceed

Pick up the correct statement from the following:

Lug angles

The Indian standard code which deals with steel structures, is

Under a concentrated load, bearing stress fb in a beam is given by (where b is the length of the bearing plate and h is the depth of the root of the fillet).

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

For double angles carrying tension, placed back to back and connected to either side of the gusset plate, the sectional area of the section, is equal to cross sectional area of

The beam outside a wall upto floor level above it, is known as

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

The rivets which are heated and then driven in the field, are known

If fbt and fc are the co-existent bending tensile stress and shear stress in a member, the equivalent stress fc is

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

When a large value of radius of gyration is not required

The ratio of hydrostatic stress to the volumetric strain within the elastic range, is called

Minimum thickness of web in a plate