22502 Design of Steel and RCC Structure External Oral / Viva Practice Questions with Answers
1. Question
1. What Is Structural Steel Design?
Answer
:
structural steel design, is an area
of knowledge of structural engineering used to design steel structures. The
structures can range from schools to homes to bridges. ... The second is the
Load and Resistance Factor Design (LRFD) method.
2. Question
2. What Are The Mechanical Properties Of Structural Steel?
Answer
:
Resistence
to deformation based upon:
o
Material.
o
Length.
o
X-section.
3. Question
3. Explain The Design Process Of Structural Steel?
Answer
:
Design
process :
o
Preliminary member sizing of beams
o
Structural analysis - modeling, analysis
o
Design review - member modifications
o
Cost of estimation
o
Preparation of structural drawings and
specifications
o
Loads for structural analysis and design
§ Dead
load
§ Live
load
§ Mean
return period OR
§ Recurrence
interval OR
§ Live
loads for various occupencies
§ Reduction
in basic design live load
§ Impact
Load
§ Wind
load
4. Question
4. Describe The Steps Used For Erection Of Structural Steel?
Answer
:
o
Material received at site.
o
Concrete bases and anchor bolts.
o
Shims.
o
Pre assembly at ground level.
o
Main construction steel erection (dimension bolt)
o
Tightening for anchor bolt.
o
Alignment for structural steel.
o
Tightening for steel.
o
Tightening for anchor bolts.
o
Grouting.
o
Complete structural steel erection (secondary
beams, bracing).
o
Calibration of whrench and device.
o
Modification during and after erection includes
cutting, welding, NDT,….etc).
o
Painting inspection.
5. Question
5. What Are The Defects You Can Except During Inspection Of Material Receiving
At The Site?
Answer
:
o
Lamination.
o
distortion.
o
pitting.
6. Question
6. Mention The Steps To Check Material Received At The Site?
Answer
:
o
Visual inspection.
o
Dimension inspection.
o
Verification of heat no and mill certificate
information’s.
7. Question
7. How Can You Check The Support Foundation ?
Answer
:
o
Location.
o
Orientation.
o
Elevation.
8. Question
8. What Is The Minimum Top Elevation Of Leveling Shims?
Answer
:
Minimum 25mm.
9. Question
9. What Is The Acceptable Variation In Dimensions Between The Centres Of Two
Anchor Bolts (within An Anchor Bolt Group)?
Answer
:
Maximum 3 mm.
10. Question
10. Which Code You Can Use For Check Bolts Used For Primary Structural
Connection?
Answer
:
ASTM A325 N.
11. Question
11. What Is The Minimum Size Of Bolt Used At Astm A32 N ?
Answer
:
Minimum size 20mm.
12. Question
12. How Much Variation In Elevation Of The Top Of Anchor Rods?
Answer
:
Max 13 mm.
13. Question
13. How Many Days Minimum Required To Archive 70% Concrete Strength (curing
Time)?
Answer
:
7 days minimum.
14. Question
14. How Many Bolts Minimum Required Per Connection?
Answer
:
2 bolt minimum required.
15. Question
15. How Much Variation In Dimension From Centre Of Any Anchor Bolts Group To Be
Establish Column Line Through The Group?
Answer
:
Equal to or less than 6mm
16. Question
16. Which Code You Can Use For Welding Of Structural Steel?
Answer
:
D1.1.
17. Question
17. What Are The Types Of Joints You Can Use For Erection Of Structural Steel?
Answer
:
Snugtightened joint. Pretension join
or slip critical joint.
18. Question
18. What Is Minimum Thickness Of Any Part Of Structural Steel Shape?
Answer
:
Minimum 5 mm.
19. Question
19. What Is The Vertical Tolerance (alignment) For Straight Compression
Structural Member?
Answer
:
1 mm per 1m accepted.
20. Question
20. What Are The Types Of Methods Of Bolt Tightening?
Answer
:
Snug tightening, turn of nutpreten
sioning calibrated wrench pretensioning or directtension indicator
pretensioning
21. Question
21. Complete, All Bolts, Nuts And Washers Shall Be Properly Identified And
Marked With ?
Answer
:
o
Material grade.
o
manufacture’s logo.
22. Question
22. .all Nuts For High Strength Bolts Shall Be …………. To Reduce To Torque
Installation .
Answer
:
Wax – dipped.
23. Question
23. All Gusset And Stiffener Plates Shall Be …………..mm Minimum Thickness
Answer
:
10 mm minimum.
24. Question
24. What Is The Minimum Height Of Handrails Provided On Walkways And Platforms
?
Answer
:
Over 1 meter heigh.
25. Question
25. Complete, Standard Bolt Holes Shall Not Be Enlarge By More Than ……………. Mm
To Make Connection Resulting From Minor Mislit
Answer
:
1mm.
26. Question
26. What Are The Properties Of A Steel?
Answer
:
The
important characteristics of steel for design purposes are:
o
yield stress (Fy).
o
ultimate stress (Fu).
o
modulus of elasticity (E).
o
percent elongation (ε).
o
coefficient of thermal expansion (α).
27. Question
27. What Are The Types Of Structural Steel?
Answer
:
Types
of structural steel : Various types of structural steel
sections and their technical specifications are as follows:
o
Beams.
o
Channels.
o
Angles.
o
Flats
28. Question
28. What Are Steel Beams?
Answer
:
Steel
Beams : Steel Beams is considered to be a structural
element which mainly carries load in flexure meaning bending. Usually
beams carry vertical gravitational force but are also capable of carrying
horizontal loads generally in the case of an earthquake.
The mechanism of carrying
load in a beam is very unique, like; the load carried by a beam is
transferred to walls, columns or girders which in turn transfer the force
to the adjacent structural compression members. The joists rest on the
beam in light frame constructions.
29. Question
29. Explain About Steel Channels?
Answer
:
Steel
channels : Steel channels are used ideally as supports
and guide rails. These are roll-formed products. The main metal used for
making channels is steel along with aluminum. There are certain variations
that are available in the channels category, the categorization is mainly on
the shape of the channel, the varieties are mentioned below:
o
J channels: This kind of channel has two
legs and a web. One leg is longer. This channel resembles the letter-J.
o
Hat channels: This channel has legs that are
folded in the outward direction resembling an old fashioned man's hat.
o
U channels: This most common and basic
channel variety. It has a base known as a web and two equal length legs.
o
C channels: In this channel the legs are
folded back in the channel and resemble the letter-C. C channels are known
as rests.
o
Hemmed channels: In this kind of channel the top
of the leg is folded hence forming double thickness.
30. Question
30. What Are The Applications Of Steel Channels?
Answer
:
Application
: Steel channels are subjected to a wide array of
applications. The application fields are:
o
Construction.
o
Appliances.
o
Transportation.
o
Used in making Signposts.
o
Used in wood flooring for athletic purposes.
o Used in installing and making windows and doors.