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

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.)

A

Is at the maximum distance from CG of the rivet group

B

Is at the minimum distance from CG of the rivet group

C

Gives the maximum angle between the two forces Fa and Fm

D

Gives the minimum angle between the two forces Fa and Fm

According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double shear) is (where n = Number of rivets per pitch length)

A

$$\frac{\pi }{4}{{\text{d}}^2} \times \tau \times {\text{n}}$$

B

$$1.875 \times \frac{\pi }{4}{{\text{d}}^2} \times \tau \times {\text{n}}$$

C

$$2 \times \frac{\pi }{4}{{\text{d}}^2} \times \tau \times {\text{n}}$$

D

$$3 \times \frac{\pi }{4}{{\text{d}}^2} \times \tau \times {\text{n}}$$

Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d = Dia. of rivet hole and $${\sigma _{\text{t}}}$$ = Permissible tensile stress for plate material)

A

$${\text{pd}}{\sigma _{\text{t}}}$$

B

$${\text{pt}}{\sigma _{\text{t}}}$$

C

$$\left( {{\text{p}} - {\text{d}}} \right){\sigma _{\text{t}}}$$

D

$$\left( {{\text{p}} - {\text{d}}} \right){\text{t}}{\sigma _{\text{t}}}$$

If the rivets in adjacent rows are staggered and the outermost row has only one rivets, the arrangement of the rivets is called

A

Chain riveting

B

Zigzag riveting

C

Diamond riveting

D

Crisscross riveting

According to I.B.R., the distance between the rows of rivets, for equal number of rivets in more than one row for lap joint or butt joint (chain riveting) shall not be less than

A

d

B

1.5 d

C

2 d

D

2.5 d

The diameter of the rivet hole is usually __________ the nominal diameter of the rivet.

A

Equal to

B

Less than

C

More than

D

None of these

According to Indian standards, the diameter of rivet hole is made larger than the basic size of rivet by

A

0.5 mm up to rivet diameter of 24 mm

B

1 mm for rivet diameter from 27 mm to 36 mm

C

2 mm for rivet diameter from 39 mm to 48 mm

D

All of the above

In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)

A

1 d

B

1.5 d

C

2.5 d

D

2 d

In order to avoid tearing off the plate at an edge, the distance from the center of the rivet hole to the nearest edge of the plate (i.e. margin) should be (where d = Diameter of rivet hole in mm)

A

d

B

1.5 d

C

2 d

D

2.5 d

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

A

1.5 d

B

2.0 d

C

2.5 d

D

3.0 d

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

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