This set of Design of Steel Structures Multiple Choice Questions & Answers (MCQs) focuses on “Riveted Connections”.
1. What is riveting?
a) the process of making holes in the structure
b) process of making mould for structure
c) method of joining together pieces of metal by inserting ductile metal pins called rivets
d) method of joining together pieces of metal by inserting non ductile metal pins called rivets
View Answer
Explanation: Riveting is the method of joining together pieces of metal by inserting ductile metal pins called rivets into holes of pieces to be connected and forming a head at end of rivet to prevent each metal piece from coming out.
2. Size of rivet hole is _________ size of rivet
a) more than
b) less than
c) equal to
d) not compared with
View Answer
Explanation: Size of rivet hole is kept slightly more than size of rivet.
Size of rivet hole is 1.5mm more for rivet diameter < 25mm
Size of rivet hole is 2mm more for rivet diameter ≥ 25mm.
3. Hammering is done in rivet to _______
a) give proper shape to rivet
b) completely fill up the rivet hole
c) partially fill up the rivet hole
d) make a rivet hole
View Answer
Explanation: Holding red hot rivet at shop head end, hammering is made. It results into expansion of rivet to completely fill up the rivet hole and also into formation at driven head.
4. Which of the following about rivet is correct?
a) causes low level of noise pollution
b) it does not require skilled work
c) labour cost is low
d) removing poorly installed rivet is costly
View Answer
Explanation: (i)Rivet connection is associated with high level of noise pollution, (ii)needs heating rivet to red hot, (iii)inspection of connection is skilled work, (iv) removing poorly installed rivet is costly, (v)labour cost is high.
5. Which of the following is correct?
a) effective diameter of rivets = rivet hole diameter
b) effective diameter of rivets = nominal diameter of rivet
c) effective diameter of rivets = 1.5 x rivet hole diameter
d) effective diameter of rivets = 1.5 x nominal diameter of rivet
View Answer
Explanation: Effective diameter of rivet is taken as rivet hole diameter instead of nominal diameter of rivet. Rivet hole diameter is diameter of rivet + clearance.
6. Diameter of head for button head rivet is ______
a) 1.60d, where d=nominal rivet diameter
b) 2.5d, where d=nominal rivet diameter
c) 3d, where d=nominal rivet diameter
d) 5d, where d=nominal rivet diameter
View Answer
Explanation: Diameter of head for
(i) button head rivet = 1.6d,
(ii) flat countersunk head = 1.5d,
(iii) flat head = 2d, where d=nominal rivet diameter.
7. Height of head for flat countersunk head rivet is ______
a) 0.7d, where d=nominal rivet diameter
b) 0.5d, where d=nominal rivet diameter
c) 0.43d, where d=nominal rivet diameter
d) 0.25d, where d=nominal rivet diameter
View Answer
Explanation: Diameter of head for
(i) button head rivet = 0.7d,
(ii) flat countersunk head rivet = 0.43d,
(iii) flat head rivet = 0.25d, where d=nominal rivet diameter.
8. Tolerance on length for rivet diameter > 16mm is_____
a) 1.5mm
b) 2mm
c) 5mm
d) 3mm
View Answer
Explanation: Preferred nominal length of shank are 28,30,32,…..,225mm. Range of length depends on rivet diameter. Tolerance on length = 1.5mm, for rivet diameter ≤ 16mm and tolerance on length = 3mm, for rivet diameter > 16mm.
9. Which of the following assumption is true for rivet connection?
a) friction between plates is considered
b) distribution of direct stress on portions of plates between rivet holes is uniform
c) bending stresses are considered
d) shear stress is not uniform on cross section of rivet
View Answer
Explanation: The assumptions for rivet connection are : (i) friction between plates is neglected, (ii) distribution of direct stress on portions of plates between rivet holes is uniform, (iii) shear stress is uniform on cross section of rivet, (iv) bending stresses are neglected.
10. Rivets in group subjected to direct loads share load ________
a) equally
b) unequally
c) according to rivet diameter
d) rivets are not used in groups
View Answer
Explanation: Rivets in group subjected to direct loads share load equally.
Strength of group of rivets = Strength of single rivet x number of rivets in group.
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