VARDHAMAN COLLEGE OF ENGINEERING
(AUTONOMOUS)
B. Tech VI Semester Regular Examinations, May 2018
(Regulations: VCE-R15)
DESIGN OF STEEL STRUCTURES
(Civil Engineering)
Date: 14 May, 2018 FN
Time: 3 hours
Max Marks: 75
Answer ONE question from each Unit
All Questions Carry Equal Marks
Unit I
1.

Write a note on Black bolts and HSFG bolts.
5M

A lap joint is made between two plates of 10mm thick with 6 numbers of 16mm black bolts (G4.6) in two rows. Find the joint capacity Bolts are fully threaded.
10M
2.

With sketches explain the different failures of bolted connections.
5M

Calculate the factored load that can be supported by the bracket connection shown in the Fig.1.Weld size 6 mm.
Fig.1
10M
Unit II
3.
A compound column of 2ISMC 250 kept toe to toe. Find the maximum load carried by the column for an effective height of 6.2m. What is the optimum distance between toes for this load? Design a welded lacing system for this compound column.
15M
4.
Design the base plate for an ISHB 350 column to carry a factored load of 1200kN. Assume Fe410 grade steel and M25 concrete, Use the effective area method of design, sketch the details.
15M
Unit III
5.

What is lug angle and why is it not preferred? Explain.
5M

A tie member of roof truss consists of 2 ISA 125x75x10mm. The tie member is subjected to a pull of 250kN. The angles are connected on either side of gusset plate of 10mm thick with long legs back to back. Design the end connections assuming field weld.
10M
6.
A single unequal angle 90x60x6 is connected to a 10mm gusset plates at the ends with 5 numbers of 16mm bolts to transfer tension. Determine the design tensile strength of the angle if the gusset is connected to 90mm leg.
15M
Unit IV
7.
Determine the design loads on the purlins of an industrial building near Vishakhapatnam, given:
Class of building: General with life of 50 years
Terrain Category
Maximum dimension: 40m
Width of building: 15m
Height at eve level: 8m
Topography: less than 30
Permeability: Medium
Span of truss: 15m, Pitch:1/5
Sheeting: AC sheets
Spacing of purlins: 1.35m
Spacing of trusses: 4m
15M
Cont…2
2
8.

With neat sketch explain different types of roof trusses.
5M

A roof truss shed is to be built in Lucknow for an industry. The size of shed is 24mx40m. The height of building is 12m at the eves. Determine the basic wind pressure.
10M
Unit V
9.
Design a welded plate girder of span 24m to carry on super imposed load of 35kN/m. Avoid use of bearing and intermediate stiffeners use Fe 415 steel.
15M
10.
Design an end bearing stiffener and its connections the flange plate is 500x40mm; web plate 1800x10mm, maximum shear force is 2600kN.