VALLIAMMAI ENGINEERING COLLEGE SRM Nagar, Kattankulathur – 603 203 DEPARTMENT OF CIVIL ENGINEERING ME STRUCTURAL ENGINEERING QUESTION BANK II SEMESTER ST5201 ADVANCED STEEL STRUCTURES Regulation – 2017 Academic Year 2017 – 18 Prepared by Mr. S.Suresh babu, Assistant Professor/CIVIL
18
Embed
VALLIAMMAI ENGINEERING COLLEGE Semester/ST5201-Advanced... · VALLIAMMAI ENGINEERING COLLEGE SRM Nagar, ... Framed Connections HSFG bolted connections PART ... Describe the advantages
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
VALLIAMMAI ENGINEERING COLLEGE
SRM Nagar, Kattankulathur – 603 203
DEPARTMENT OF CIVIL ENGINEERING
ME STRUCTURAL ENGINEERING
QUESTION BANK
II SEMESTER
ST5201 ADVANCED STEEL STRUCTURES
Regulation – 2017
Academic Year 2017 – 18
Prepared by
Mr. S.Suresh babu, Assistant Professor/CIVIL
SUBJECT : ST5201 ADVANCED STEEL STRUCTURES
SEM / YEAR: II/I
UNIT-I GENERAL
Design of members subjected to combined forces – Design of Purlins, Louver rails, Gable
columnand Gable wind girder – Design of simple bases, Gusseted bases and Moment Resisting
Base Plates.
PART - A
Q.no Questions BT
Level
Competence
1. V What is a column base? BT-1 Remembering
2. Classify the column bases provided for steel structures BT-3 Applying
3. What do you mean by gusset base? BT-1 Remembering
4. Define cleat angles BT-1 Remembering 5. Draw neat sketches for different types of splices and different types
of base connections. BT-3 Applying
6. Define the terms i) Purlin ii) Louver BT-1 Remembering
7. What is meant by gable girder? BT-1 Remembering
8. List the types of base plates used in practice. BT-1 Remembering
9. Describe the steps to be followed while designing a slab base. BT-2 Understanding
10. Describe the steps to be followed while designing a gusseted base. BT-2 Understanding
11. Explain a moment resistant base. BT-4 Analysing
12. Classify the types of moment resistant bases. BT-3 Applying
13. Summarize the advantages of using Purlins in industrial buildings. BT-6 Creating
14. Compare braced building and un-braced buildings. BT-4 Analysing 15. Compare the gable frames with ordinary frames and draw a neat
sketch of it. BT-4 Analysing
16. Differentiate between moment resisting plates and shear resisting
plates BT-2 Understanding
17. Rewrite the functions of eaves girder BT-5 Evaluating
18. Discuss about a gable wind girder BT-2 Understanding
19. Rewrite the functions of gable wind girder. BT-5 Evaluating
20. Summarize the limitations of stress concentration factor. BT-6 Creating
PART - B
1. Design a ‘I’ section purlin, for an industrial building situated in the
outskirts of Allahabad, to support a galvanized corrugated iron sheet
roof for the following data:
a) Spacing of the truss c/c :6m,
b) Span of truss :12m,
c) Spacing of purlins c/c: 1.5m,
d) Intensity of wind pressure :2kN/m2,
e) Weight of galvanized sheets :130N/m2, Assume the Grade of steel
as Fe 410.
BT-5
Evaluating
2. Explain the following:
(i) Sag rods
(ii) Principal rafter
(iii) Roof trusses
(iv) Bracing
BT-6
Creating
3. Examine and prepare the design of a column consisting of ISHB 350
@67.4 kg/m carries an axial load of 350KN and a bending moment of
100 kNm in the plane of web. Design the attached base for the
column with the provision of anchor bolts to resist the bending
moment. Take permissible bearing pressure on footing as 4N/mm2 .
BT-1
Remembering
4. Discuss the design the slab base for the column consisting of ISHB
300 @ 58.8kg/m and carrying an axial load of 1000kN. Take the
allowable bearing pressure on concrete as 4 N/mm2
BT-2
Understanding
5. Examine and design a slab base for a steel column ISMB 350 having
width of flange 250 mm and carrying an axial compressive load of
1000 kN. If permissible compressive stress in concrete is 4 MPa &
permissible bending stress in base plate is 185 MPa. Take bearing
capacity of soil as 300 kN/ m2.
BT-1
Remembering
6. A steel stanchion consisting of ISHB 350 @67.4 kg/m carries an
axial load of 400kN and a moment of 50kNm in the plane of the web.
Analyse and design the base of the column with attached base plate
and initially tensioned bolts. The allowable bearing pressure on
footing is 4 N/mm2 . The bolts may be given tension of 140 N/ mm2
BT-4
Analysing
7. Discuss the design a roof truss for an industrial building with 25 m
span and 120 m long. The roofing is galvanized iron sheeting. The
basic wind speed is 50 m/s and terrain is open industrial area and
building is class A building. The building clear height at the eaves is
9 m.
BT-2
Understanding
8. Calculate and design a suitable moment resisting base for a column
subjected to an axial load of 360kN and moment of 130kNm. The
column section is ISHB 400 @ 822 N/m. safe bearing pressure in
concrete is 4000 kN/ m2.
BT-3
Applying
9. An industrial building is proposed to be built in Bangalore city
where the basic wind pressure is 33m/s. Particulars of the building
are:
Length: 120m Width: 24m
Roof truss: Fink
Eaves height: 8m above GL
Truss span: 24m Rise: 5m
Truss spacing: 5m Purlin Spacing: 1.3 m
Ground: Plain Land Roofing Sheet: AC Sheets
Estimate the design of the purlin using channel section.
BT-1
Remembering
10. Discuss briefly the following with neat sketches.
(i) bracing system in roof truss
(ii) Connection of purlin to rafter
(iii) Anchorages of truss with concrete column.
BT-5
Evaluating
11. Draw a neat sketches of different types of splices and different types
of types of connections BT-3 Applying
12. (i)Discuss the design procedure of base slab for transmiting the
column forces to the foundation safely?
(ii)Explain the design procedure for channel section purlin and
angle section purlin
BT-2
Understanding
13. Explain the following:
(i) Louver rails
(ii) Gable column BT-6
Creating
14. (i) State the different steps to be followed while designing the slab
base?
(ii)What are the types of base plates used in practice?
BT-1 Remembering
PART - C
1. An industrial building is made up of 10 gable frames spaced at 6m
apart. The frame has 18m span and 4m rise with column height 6m
above GL. Assuming the column bases are at 700mm above
ground level and hinged, determine the design the frame for dead
and live loads only.
BT-4
Analysing
2. An industrial building is with the following details
Span:20m, Length: 120, Roofing: GI Sheets, Basic wind speed:
45m/s, terrain: open; industrial area, Class of building: Class A,
The clear height at eaves:9m . Justify and design its roof truss.
BT-1
Remembering
3. Do the calculations and design a slab base for a steel column with
the following data.
Column section: ISMB 300; Axial compressive load of 1000 kN.
Permissible compressive stress in concrete: 4 MPa
Permissible bending stress in base plate :185 MPa.
Consider SBC of soil as 300 kN/ m2.
BT-3
Applying
4. Discuss the design a suitable purlin section, for the industrial
building.
a) Spacing of the truss c/c :5m,
b) Span of truss :10m,
c) Spacing of purlins c/c: 1.5m,
d) Intensity of wind pressure :2kN/ m2,
e) Weight of galvanized sheets (GI Sheets):130N/ m2,
f) Location of the building: Indore,
g) Grade of steel: Fe 410.
BT-2
Understanding
UNIT II DESIGN OF CONNECTIONS
Types of connections – Welded and Bolted – Throat and Root Stresses in Fillet Welds – Seated
Connections – Unstiffened and Stiffened seated Connections – Moment Resistant Connections – Clip
7. Classify the types of bracket connections explain with neat sketch. BT-4 Analysing 8. Discuss the examples for connections subjected to eccentric shear. BT-2 Understanding
9. Illustrate the types of heavy moment connections? BT-2 Understanding
10. What are split beam connections? BT-1 Remembering
11. Draw the sketch of split beam connections BT-3 Applying
12. Describe bolted bracket connections with a neat sketch. BT-2 Understanding
13. Compose some examples for light moment connections BT-5 Evaluating
14. Rewrite the formula for finding the bearing length of seat angle in
the beam to column connection?
BT-5 Evaluating
15. Write the formula for finding the moment of resistance of clip angle BT-1 Remembering
16. Explain how you will determine the diameter of the bolt hole. BT-4 Analysing
17. Describe the advantages and disadvantages of bolted connections. BT-2 Understanding
18. Classify various types of bolts used for structural purposes? BT-3 Applying
19. List the categories of imperfections in welding. BT-1 Remembering
20. Explain the stiffened seat connection with a sketch BT-6 Creating
PART - B
1. Design a bolted bracket connection to support an end reaction of
400kN because of the factored loads supported by the beam. The
eccentricity of the end reaction is shown in the figure. The steel used
is of grade Fe410. Use bolts of grade 4.6. The thickness of bracket
plate may be taken as 10mm.
BT-5
Evaluating
2. (i) Describe and design a bracket connection to transfer an end
reaction of 225kN due to factored loads as shown in the fig.
The end reaction from the girder acts at an eccentricity of
300mm from the face of the column flange.
(ii) Also design bolted joint connecting the Tee flange with the
column flange. Steel is of grade Fe410 and bolts of grade
4.6.
BT-1
Remembering
3. A bracket plate 10 mm thick is used to transmit a reaction of 100 kN
at a distance of 125mm from column flange as shown in fig. Design
the welded connection .Draw design details.
BT-3
Applying
4. (i) Briefly explain the difference between bolted and welded
connections
(ii) Distinguish the following:
a) Factor of safety and partial factor for loads
b) Characteristics loads and design loads
BT-4
Analysing
5. Discuss and design a single unequal angle strut to carry a load of 90
kN. The angle is connected by its longer leg to 8 mm thick gusset
plate. The effective length of the member is 2.5 m. Also design the
plate bolted end connections.
BT-2
Understanding
6. An ISLB 325 @ 43.1 kg/m transmit an end reaction of 125 kN to the
web of ISHB 300@ 63 kg/m. Design the bolted connection . Draw
the design details. BT-3
Applying
7. A ISMB 500@ 0.869 kN/m transmits an end reaction of 130 kN to
the flange of column ISHB 250@ 0.510 kN/m. Design an un-
stiffened welded seat connection.
BT-5
Evaluating
8. A ISMB300, @ 0.442 kN/m transmits an end reaction of 11 kN and
an end moment of 80kNm to the flange of a column ISHB300, @
0.630 kN/m. Identify and design the welded connections. BT-1
Remembering
9. An [email protected]/m(Fe410 grade of steel) is to carry a factored
tensile force of 900kN. The channel section is to be welded at the
site to a gusset plate 12mm thick. Summarize and design a fillet
weld, if the overlap is limited to 350mm.
BT-2
Understanding
10. Design and discuss about strut of single unequal angle to carry a
load of 100 kN. The angle is connected by its longer leg to 10 mm
thick gusset plate. The effective length of the member is 2 m.
BT-2
Understanding
11. Calculate the of a 20mm diameter bolt of grade 4.6 for the following
connections. The main plates to be jointed are 12mm thick
(i) Lap joint
(ii) Single cover butt joint the cover plate being 10mm thick
(iii) Double Cover joint . each of the cover plate being 8mm thick.
Assume suitable datas.
BT-6
Creating
12. (i) Give examples for light moment connection
(ii) Design a split beam connection to transfer a factored shear
150KN and a moment of 50KNm from the end of the beam
ISMB 350 to a column of ISHB 300 use 16mm dia bolts.
BT-4
Analysing
13. (i) Explain the two main types of moment-resistance
connections?
(ii) Explain (a)Split-T beam Connection (b) Column spice &
beam Spice
BT-6
Creating
14. Write Short Notes on
(i) Unstiffened seat angle connection
(ii) Stiffened seat angle connection
(iii) Framed Connection
BT-1
Remembering
PART - C
1. Two flats , of Fe410 grade steel, each 210mmx 8mm are to be jointed
using 20mm diameter, 4.6 grade bolts, to form a lap joint. The joint is
supposed to transfer a factored load of 250kN. Justify and design the
joint and determine suitable pitch for the bolts.
BT-1
Remembering
2. Two plates 10mm and 18mm thick are to be joined by double cover
butt joint. Summarize and design the joint for the following data.
Factored design load: 750kN
Bold diameter: 20mm
Grade of steel: Fe410
Grade of bolts: 4.6
Cover plates 2 (one on each side): 8mm thick
BT-6
Creating
3. A single –bolted double-cover butt joint is used to connect two plates
which are 8mm thick. Assuming 16mm diameter bolts of grade 4.6 and
cover plates to be 6mm thick, calculate the strength and efficiency of
the joints, if 4 bolts are provided in the bolt line at a pitch of 45mm.
Also determine the efficiency of the joint if two lines of bolts with 2
bolts in each line have been arranged to result in a double-bolted
double-cover butt joint.
BT-4
Analysing
4. A 120mm diameter and 6mm thick pipe is fillet welded to a 14mm
plate. It is subjected to a vertical factored load of 4.5kN at 1m from the
welded end and a factored twisting moment of 1.8kNm. Examine and
design the joint assuming shop welding and steel of grade fe410.
BT-1
Remembering
UNIT III ANALYSIS AND DESIGN OF INDUSTRIAL BUILDINGS
Analysis and design of different types of trusses – Analysis and design of industrial buildings – Sway
and non sway frames – Aseismic design of steel buildings.
PART - A
Q.No Questions BT
Level Competence
1. V Explain the stability of a chimney is checked during the design
process. BT-4 Analysing
2. Classify the types of loads for which an industrial building is to be
designed.
BT-4 Analysing
3. Define characteristic load. BT-1 Remembering
4. Write about connection which is generally adopted for tubular steel
trusses? State its benefits. BT-5 Evaluating
5. Differentiate between self supporting steel chimneys and guyed steel
chimneys.
BT-2 Understanding
6. What should be the minimum height of lining for a chimney? BT-1 Remembering
7. Write about the forces acting on the self supporting steel chimney. BT-5 Evaluating
8. Discuss about sway and non sway frames BT-2 Understanding
9. Explain about the major components of an industrial building BT-4 Analysing
10. Discuss about a gantry girder and draw a sketch of it. BT-2 Understanding
11. Discuss the application of pratt-truss and draw a neat sketch of it BT-2 Understanding
12. What are the loads that will act on roof trusses? BT-1 Remembering
13. Summarize the methods available for the analysis of roof trusses BT-6 Creating
14. What are end bearings? BT-1 Remembering
15. Explain the types of crane column BT-6 Creating
16. What are girts? BT-1 Remembering
17. Draw the neat sketch of live pan truss and mention its application. BT-3 Applying
18. How is economical spacing of roof trusses obtained? BT-3 Applying
19. Identify the loads that will act on the column of crane girder . BT-1 Remembering
20. Describe some examples for industrial building. BT-2 Understanding
PART - B
1. A self-supporting steel stack .is 80m high and its diameter at the top is
3m.Design the plates for the stack. Adopt the wind force as per IS:
875. The location of place is such that the intensity of wind pressure
up to 30m height is 1.5kN/m2 .The foundation and riveted joints need
not be designed.
BT-5
Evaluating
2. Explain how the base plate of a chimney is designed. BT-1 Remembering
3. Analyze and design only the chimney of a self-supporting stack of
effective height 30 m, having its diameter at top equal to 2 m. Take
wind pressure intensity as 1.5 kN/mm2 uniform throughout its height.
Assume uniform values of permissible tensile and compressive
stresses as 120 N/mm2 and 90 N/mm2.
BT-4
Analysing
4. Describe and design a simply supported gantry girder to for the
following data:
Crane capacity : 160 KN
Self weight of crane girder : 200 KN
Self weight trolley, electric motor, hooks etc. : 50KN
Min. approach of crane hook to the gantry girder : 1.6 m
Wheel base : 2.8 m
c/c distance between gantry rail : 12 m
c/c distance between column : 6m
Self weight of rail section : 300 N/m
Check the section for maximum bending moment due to vertical
forces, lateral forces and longitudinal forces.
BT-1
Remembering
5. Briefly explain the various steps involved in the design of roof trusses. BT-3
Applying
6. Determine the design forces in the members of the steel roof truss as
shown in the fig. 16m span and resting on brick masonry walls. The
trusses are placed 8m c/c. the rise of the truss is ¼ of the span.
Roofing is of asbestos cement of dead load 171 N/ mm2.The wind load
normal to roof truss is 940N/ mm2. One end of the truss is hinged and
the other end is supported on rollers.
BT-4
Analysing
7. Discuss and design a fink type roof truss for an industrial building for
the following data:
Overall length-48m
Overall width-16.5m
Width c/c roof column-16m
Height of column-11m
Roofing material- asbestos cement sheets
Side covering- asbestos cement sheets
The industrial building is situated in Allahabad. Assume the missing
data.
BT-2
Understanding
8. Illustrate elaborately about the items that are to be considered while
planning and designing an industrial building. BT-3 Applying
9. Explain various steps involved in the design of gantry girder. BT-6 Creating
10. An industrial building is made of 10 portal frames spaced 6m apart.
The frame has a span of 20m and 4m rise with a column height of 6m
above ground level. Assuming the column bases are hinged, discuss
and design the frame for dead, live and wind loads as per IS875.
BT-2
Understanding
11. (i)Explain about Live pan , Pratt and north light trusses roof.
(ii)Write down the steps involved in the design the roof trusses BT-5 Evaluating
12. The Plan and elevation of a three- storey school building is shown in
figure. The building is located at Kolkata (Zone III). The type of soil
encounted is medium stiff and it is proposed to design the bulding
with special moment frames. The intensity of DL is 10KN/m2 and the
floors are to cater IL of 3KN/m2. Determine the Lateral loads on the
various floor levels of theStructure by Static analysis
BT-3
Applying
13. Explain in detail about Sway and Non Sway frames BT-6 Creating
14. Discuss in detail about Aseismic design of steel buildings.
BT-2 Understanding
Understanding PART - C
1. Discuss bout a roof truss and design itsa roof truss, rafter bracing,
purlin, tie runner, side runner and eave girder for an industrial building
located at Guwahati with a span of 20m and a length of 50m. the
roofing is galvanized iron sheeting. Basic wind speed is 50m/s and the
terrain is an open industrial area. Building is Class B building with a
clear height of 8m at the eaves.
BT-2
Understanding
2. A flat roof building of 18m span has 1.5m deep trusses at 5m centers.
The total dead load is 0.7kN/m2 and the imposed load is 0.75kN/m2.
Design the truss using angle sections with welded internal joints and
bolted field splices
BT-5
Evaluating
3. Describe and design a gantry girder to be used in an industrial building
carrying a manually operated overhead travelling crane , for the
following data:
Crane capacity:200kN
Self-weight of the crane girder excluding trolley:200kN
Self-weight of the trolley, electric motor, hook etc:40kN
Approx. minimum approach of the crane hook to the gantry girdr:1.2m
Wheel base:3.5m
c/c distance between gantry rails:16m
c/c distance between columns:8m
self-weight of rail section:300N/m
Diameter of crane wheels:150mm
Steel is of grade Fe410.
BT-1
Remembering
4. Describe and design a Pratt-truss as shown in fig. the design wind
pressure is 1200N/m2. The trusses are covered with AC sheets and the
centre-to-centre spacing of trusses is 6m.
BT-1
Remembering
UNIT IV PLASTIC ANALYSIS OF STRUCTURES
Introduction, Shape factor, Moment redistribution, Combined mechanisms, Analysis of portal frames,
Effect of axial force - Effect of shear force on plastic moment, Connections - Requirement – Moment
resisting connections. Design of Straight Corner Connections – Haunched Connections – Design of
continuous beams.
PART - A
Q.No Questions BT
Level
Competence
1. V Describe the plastic method of design. BT-2 Understanding
2. Define ductility. BT-1 Remembering
3. Draw the stress strain curve for mild steel. BT-3 Applying
4. What are perfectly plastic materials? BT-1 Remembering