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Q1. | When a large value of radius of gyration is not required. |

A. | channels are placed back to back [Wrong Answer] |

B. | channel flanges are kept inward [Correct Answer] |

C. | channel flanges are kept outward [Wrong Answer] |

D. | none of these. [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ Pick up the correct statement from the following:

The slenderness ratio of lacing bars for compression members should not exceed 145

The minimum width of lacing bar connected with rivets of nominal diameter 16 mm, is kept 50 mm

The angle of inclination of lacing bars and the axis of the members should be between 40Â° and 70Â°

All the above.

⇒ A channel section consist of

Two webs

Two flanges

Two webs and two flanges

One web and two flanges

⇒ The greatest permissible clear dimension of the web of thickness

*t*in the panel of a plate girder, is restricted to.

180 t

220 t

260 t

270 t

⇒ For a cantilever beam of length

*L*continuous at the support and unrestrained against torsion at the support and free at the end, the effective length

*l*is equal to.

l = L

l = 2L

l = 0.5L

l = 3L

⇒

In plastic analysis, the shape factor for circular sections, is. |

1.5

1.6

1.697

none of these.

⇒ Pick up the correct statement from the following:

When the gauge distance is larger than the pitch, the failure of the section may occur in a zig-zag line

When the gauge distance is smaller than the pitch, the failure of the section may occur in a straight right angle section through the centre of rivet holes

When the gauge distance and pitch are both equal, the failure to the section becomes more likely as the diameter of the holes increases

All the above.

⇒ The size of deep penetration fillet weld is specified as minimum leg length plus

1.2 mm

2.4 mm

3.0 mm

4.8 mm

⇒ The main type of butt joints, is a double cover.

shear riveted joint

chain riveted joint

zig-zag riveted joint

all the above.

⇒ The maximum permissible slenderness ratio of compression member carrying dead and superimposed load, is.

180

200

250

300

⇒ Pick up the incorrect statement from the following:

The nominal diameter of a rivet is its diameter before driving

The gross diameter of a rivet is the diameter of rivet hole

The gross area of a rivet is the cross-sectional area of the rivet hole

The diameter of a rivet hole is equal to the nominal diameter of the rivet plus 1.5 mm

⇒ The effective throat thickness in mm of a 6 mm size fillet weld with an angle of 75° between the fusion faces is

3.6

4.0

4.2

4.5

⇒ The external wind pressure acting on a roof depends on

degree of permeability of roof

slope of roof

both (a) and (b)

none of the above

⇒ The diameter of a bolt hole is taken as the nominal diameter of the bolt plus.

1.0 mm

1.2 mm

1.4 mm

1.6 mm

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

the effective span

1.25 times the effective span

1.50 times the effective span

2.0 times the effective span

⇒ The diameter of cold driven rivets ranges from

6 mm to 12 mm

12 mm to 22 mm

22 mm to 32 mm

32 mm to 42 mm

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

adding the axial load, eccentric load, the product of the bending moment due to eccentric load and the appropriate bending factor

adding the axial load and eccentric load and subtracting the product of bending moment and appropriate bending factor

dividing the sum of axial load and eccentric load by the product of the bending moment and appropirate bending factor

none of these.

⇒

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

power driven shop rivets

power driven field rivets

hand driven rivets

cold driven rivets

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

vertical intermediate stiffener

horizontal stiffener at neutral axis

bearing stiffener

none of the above

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

0.5 D

0.68 D

0.88 D

D

⇒ The lighter section of structural members subjected to transverse loading are called as

Struts

Tie

Joists

Stanchions

⇒ Which one of the following methods of design is not suitable for structures subjected to impact and fatigue ?

Simple design

Semi-rigid design

Rigid design

Plastic-design

⇒ The effective length of a weld, is taken as the actual length.

minus the size of weld

minus twice the size of weld

plus the size of weld

plus twice the size of weld

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

tension failure of the plate

shear failure of the rivet

shear failure of the plate

crushing failure of the rivet

⇒ The T-beam bridge is generally constructed as

Deck bridge

Through bridge

Semi-through bridge

None of these

⇒ The average unit weight of sal is 865 kg/m

^{3}, provided the moisture content in the wood should be

0.2

0.12

0.06

Zero

⇒ The effective length of fillet should not be less than

The size of weld

Two times the size of weld

Three times the size of weld

Four times the size of weld

⇒ Generally in a simply supported truss, the principal rafter will carry

Compressive ratio

Tensile forces

Sometimes compressive and sometimes tensile t'orces

All the above are correct

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

channels placed back to back

channels placed toe to toe

four angle box section

all the above.

⇒ In bridge floors the longitudinal beams supported by floor beams are also called as

Headers

Trimmers

Stringers

Rafters

⇒ The greatest grip of long rivets shall not exceed

2d

4d

8d

6d