According to the Unwin's formula, if t is thickness of the plate in mm, the nomi

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Question
According to the Unwin's formula, if t is thickness of the plate in mm, the nominal diameter of the rivet, is
Options
A. d = 1.91 t
B. d = 1.91 t²
C. d = 1.91 t
D. d = 1.91 t
E. d = 2.3 t

Correct Answer

d = 1.91 t

Steel Structure Design problems

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3. A single angle in tension is connected by one leg only. If the areas of connecting and outstanding legs are respectively a and b, net effective area of the angle, is
Options
A.
B.
C.
D.
E. none of these.

4. Effective sectional area of a compression member is :
Options
A. gross sectional area - area of rivet hole
B. gross sectional ares + area of rivet hole
C. gross sectional ares x area of rivet hole
D. gross sectional ares + area of rivet hole.

5. IS : 800 - 1971 recommends that in a splice plate the number of rivets carrying calculated shear stress through a packing greater than 6 mm thick, is to be increased by 2.5% for every
Options
A. 1.00 mm thickness of packing
B. 1.50 mm thickness of packing
C. 2.0 mm thickness of packing
D. 2.50 mm thickness of packing
E. 3.0 mm thickness of packing.

6. If M is the moment due to a couple in a bearing plate whose width is b and allowable bending stress is P, the thickness (t) of the bending plate of the column splice, is
Options
A.
B.
C.
D.
E.

9. 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
Options
A. overall depth
B. clear depth
C. effective depth
D. none of these.

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