Advanced Design of Structures (22607)
1.
What Is Structural Steel Design?
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.
What Are The Mechanical Properties Of Structural Steel?
Resistence
to deformation based upon:
o
Material.
o
Length.
o
X-section.
3.
Explain The Design Process Of Structural Steel?
Design
process :
- Preliminary member sizing of
beams
- Structural analysis - modeling,
analysis
- Design review - member
modifications
- Cost of estimation
- Preparation of structural
drawings and specifications
- 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.
Describe The Steps Used For Erection Of Structural Steel?
- Material received at site.
- Concrete bases and anchor bolts.
- Shims.
- Pre assembly at ground level.
- Main construction steel erection
(dimension bolt)
- Tightening for anchor bolt.
- Alignment for structural steel.
- Tightening for steel.
- Tightening for anchor bolts.
- Grouting.
- Complete structural steel
erection (secondary beams, bracing).
- Calibration of whrench and
device.
- Modification during and after
erection includes cutting, welding, NDT,….etc).
- Painting inspection.
5.
What Are The Defects You Can Except During Inspection Of Material Receiving At
The Site?
- Lamination.
- distortion.
- pitting.
6.
Mention The Steps To Check Material Received At The Site?
- Visual inspection.
- Dimension inspection.
- Verification of heat no and mill
certificate information’s.
7.
How Can You Check The Support Foundation ?
- Location.
- Orientation.
- Elevation.
8.
What Is The Minimum Top Elevation Of Leveling Shims?
Answer
:
Minimum
25mm.
9.
What Is The Acceptable Variation In Dimensions Between The Centres Of Two
Anchor Bolts (within An Anchor Bolt Group)?
Maximum
3 mm.
10.
Which Code You Can Use For Check Bolts Used For Primary Structural Connection?
ASTM
A325 N.
11.
What Is The Minimum Size Of Bolt Used At Astm A32 N ?
Minimum
size 20mm.
12.
How Much Variation In Elevation Of The Top Of Anchor Rods?
Max
13 mm.
13.
How Many Days Minimum Required To Archive 70% Concrete Strength (curing Time)?
7
days minimum.
14.
How Many Bolts Minimum Required Per Connection?
2
bolt minimum required.
15.
How Much Variation In Dimension From Centre Of Any Anchor Bolts Group To Be
Establish Column Line Through The Group?
Equal
to or less than 6mm
16.
Which Code You Can Use For Welding Of Structural Steel?
D1.1.
17.
What Are The Types Of Joints You Can Use For Erection Of Structural Steel?
Snugtightened
joint. Pretension join or slip critical joint.
18.
What Is Minimum Thickness Of Any Part Of Structural Steel Shape?
Minimum
5 mm.
19.
What Is The Vertical Tolerance (alignment) For Straight Compression Structural
Member?
1
mm per 1m accepted.
20.
What Are The Types Of Methods Of Bolt Tightening?
Snug
tightening, turn of nutpreten sioning calibrated wrench pretensioning or directtension
indicator pretensioning
21.
Complete, All Bolts, Nuts And Washers Shall Be Properly Identified And Marked
With ?
- Material grade.
- manufacture’s logo.
22.
.all Nuts For High Strength Bolts Shall Be …………. To Reduce To Torque
Installation .
Wax
– dipped.
23.
All Gusset And Stiffener Plates Shall Be …………..mm Minimum Thickness
10
mm minimum.
24.
What Is The Minimum Height Of Handrails Provided On Walkways And Platforms ?
Over
1 meter heigh.
25.
Complete, Standard Bolt Holes Shall Not Be Enlarge By More Than ……………. Mm To
Make Connection Resulting From Minor Mislit
1mm.
26.
What Are The Properties Of A Steel?
The
important characteristics of steel for design purposes are:
- yield stress (Fy).
- ultimate stress (Fu).
- modulus of elasticity (E).
- percent elongation (ε).
- coefficient of thermal expansion
(α).
27.
What Are The Types Of Structural Steel?
Types
of structural steel : Various types of structural steel
sections and their technical specifications are as follows:
- Beams.
- Channels.
- Angles.
- Flats
28.
What Are Steel Beams?
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.
Explain About Steel Channels?
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:
- J channels: This kind of channel has two legs and a web. One leg is
longer. This channel resembles the letter-J.
- Hat channels: This channel has legs that are folded in the outward
direction resembling an old fashioned man's hat.
- U channels: This most common and basic channel variety. It has a
base known as a web and two equal length legs.
- C channels: In this channel the legs are folded back in the channel
and resemble the letter-C. C channels are known as rests.
- Hemmed channels: In this kind of channel the top of the leg is folded
hence forming double thickness.
30.
What Are The Applications Of Steel Channels?
Application
: Steel channels are subjected to a wide array
of applications. The application fields are:
- Construction.
- Appliances.
- Transportation.
- Used in
making Signposts.
- Used in
wood flooring for athletic purposes.
- Used in
installing and making windows and doors.