CASE Lab
CASE Lab
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GOKARAJU RANGARAJU
INSTITUTE OF ENGINEERING & TECHNOLOGY
Hyderabad.
CERTIFICATE
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……………………………………………………………………………laboratory
in ……………………… semester of ……………………… year during the
academic year ………………by
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CONTENTS
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CONTENTS
INDEX
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5
STAAD Pro
1. Introduction:
STAAD Pro features a state-of the-art user interface, visualization tools, powerful
analysis and design engines with advanced finite element and dynamic analysis capabilities.
From model generation, analysis and design to visualization and result verification, STAAD Pro
is a general purpose structural analysis and design program with applications primarily in the
building industry - commercial buildings, bridges and highway structures, industrial structures,
chemical plant structures, dams, retaining walls, turbine foundations, culverts and other
embedded structures, etc.
1.1. History of STAAD Software:
STAAD stands for STructural Analysis And Design. It is one of the first software
applications in the world made for the purpose of helping the structural engineers to automate
their work, to eliminate the tedious and lengthy procedures of the manual methods. Its history is
as follows:
a) STAAD-III for DOS: STAAD first versions were built for DOS Operating System, and
it was non-graphical software. The user should first undergo a lengthy reading to understand the
syntax of STAAD language of commands in order to create the input file, then will send this file
to the analysis and design engine to execute it. Text output will be produced accordingly.
With time, STAAD progress to create it’s own graphical environment, this was a major
change for the STAAD users, as they were able to build their input file without the need to
understand the syntax of STAAD language of commands but still the interface was not user
friendly.
b) STAAD-III for Windows: Research Engineers, Inc. (REI) worked in two parallel lines
to provide STAAD for Windows:
• They made not-really-Windows application which works under Windows environment.
The new software looked like STAAD III for DOS, so all of what you have to do is to switch to
Windows and start working, no need for any new experiences.
• The second track was REI & QSE merged. QSE has a very real Windows interface, but
lacks the power of STAAD engines in both analysis and design areas, plus the superiority of
STAAD multi-coded design engines, which supports almost all of the famous codes in the world.
REI and QSE joined forces to produce STAAD Pro, which was a milestone in both STAAD
history and structural analysis and design software industry.
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c) STAAD Pro: STAAD Pro was born as giant. It was mixture of the expertise of two long
experienced companies.
• STAAD Pro introduced a really good-looking interface which actually utilized all the
exceptional features of Windows 95/98/2000/ME/XP (Each STAAD Pro was working
respectively under the Windows available at the time of releasing the software to the markets).
This new interface empower the user of STAAD Pro to accomplish the most complicated
structural problems in short time, without scarifying the accuracy and the comprehensive nature
of the results.
• STAAD Pro with its new features surpassed its predecessors and compotators with its
data sharing capabilities with other major software like AutoCAD, and MS Excel.
The results generation was yet a new feature that you can depend on STAAD Pro to do for
you, now, STAAD Pro can generate handsome reports of the inputs and the outputs with the
usage of graphical results embedded within, which can be considered as final document
presented to the client.
The concrete and steel design were among the things that undergone a face-lift, specially the
concrete design, as REI created a new module specially to tackle this issue. This new module is
easy, and straightforward procedure making the concrete design and results generation a matter
of seconds ahead of the user.
• STAAD Pro has building codes for most countries including India, US, Britain, Canada,
Russia, Australia, France, Germany, Spain, Norway, Finland, Sweden, China, Euro Zone, Japan,
Denmark, and Holland. More are constantly being added.
• STAAD Pro is fully COM (Component Object Model) compliant and is designed using
an open architecture. Any third party or in-house application can be seamlessly integrated with
STAAD Pro. Also, STAAD Pro can be customized to perform the specific structural
requirements of the user.
• STAAD Pro's User Interface is the industry standard. Complex models can be quickly
and easily generated through powerful graphics, text and spreadsheet interfaces that provide true
interactive model generation, editing, and analysis. STAAD Pro easily generates comprehensive
custom reports for management, architects, owners, etc. Reports contain only the information
you want, where you want it. Add your own logo as well as graphical input and output results.
Export all data to Microsoft Word or Microsoft Excel!
• STAAD Pro supports multi-material design codes such as timber, steel, cold-formed
steel, concrete and aluminum. Over the past 25 years, our customers have designed everything
from residential buildings to skyscrapers to tanks to tunnels and even a piano! STAAD Pro's
dynamic and soil-structure interaction capabilities along with our exhaustive design output sets
STAAD Pro apart from our competitors.
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1.2 Methods of Analysis:
One of the most famous analysis methods to analyze continuous beams is “Moment
Distribution Method”, which is based on the concept of transferring the moments on the
beams to the supports at their ends.
Each support will take portion of the load according to its K; K is the stiffness factor,
which equals EI/L. As you can see E, and L is constant per span, the only variable here is
I; moment of inertia. I depend on the cross section of the member. So, if you want to use
this analysis method, you have to assume a cross section for the spans of the continuous
beam.
If you want to use this method to analyze a simple frame, it will work, but it will not be
simple, and if you want to make the frame a little bit more complicated (simple 3D
frame) this method falls short to accomplish the same mission.
Hence, a new more sophisticated method emerged, which depends fully on matrices, this
method called “Stiffness Matrix Method”, the main formula of this method is:
[P] = [K]x[Δ]
The 3 Matrices are as follows:
• [P] is the force matrix, which includes the forces acting on the whole structure, and the
reactions at the supports. This matrix is partially known, as the acting forces on the
structures are already known from the different codes, like Dead Load, Live Load, Wind
Load, etc., but the reactions are unknown.
• [K] is the stiffness factor matrix. K=EI/L, and all of these data either known or assumed.
So this matrix is fully known.
• [Δ] is the displacement matrix. The displacements of supports are either all zeros (fixed
support) or partially zeros (other supports), but the displacements of other nodes are
unknown. So this matrix is partially known.
• With these three matrices presented as discussed above, the method will solve the system
with ordinary matrix methods to get the unknowns. If we solved for the unknowns, the
reactions will be known, hence shear and moment diagrams can be generated, and the
displacement of the different nodes will be known, so the displacement and deflection
shapes can be generated.
• This method was very hard to be calculated by hand as it needs more time than other
methods, so, it was put on the shelves, up until the emergence of computers. The different
programming languages revive the possibility to utilize this method, as the program will
do all the tedious and lengthy procedures to solve for this system of matrices, therefore,
structural software adopted it as the method of analysis. STAAD was one of the first to
do that.
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1.3 Steps to Reach your Goal:
• Input File: Creating input file takes place in the Modelling Mode. It is your first step in
working in STAAD Pro. What is input file? Input file is the place you describe your case;
what do you have? And what do you want? We can cut the input file into two parts:
a) In the first part you will describe your structure. This includes the geometry, the cross
sections, the material and geometric constants, the support conditions, and finally the loading
system.
b) The second part may contain the analysis command, and printing commands.
• Send your Input File to the Analysis and Design Engine: Just like any programming
language compiler, STAAD Pro analysis and design engine, will start reading the input file
from left to right, and from top to bottom. The engine will mainly check for two things:
a) Making sure that the user used the syntax of STAAD Pro commands, or else the
engine will produce an error message.
b) Making sure that all the data needed to form a stable structure exists in the input file,
or else, the engine will produce an error message.
• If these two things are correct, STAAD will take the values mentioned in the input file
(without verification) and produce the output files.
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• As a rule of thumb, generating the output files doesn’t mean that results are correct! The
concept of GIGO (Garbage In and Garbage Out) applies. Based on this concept, don’t take
the results generated by STAAD Pro as final, but verify each piece of the output data, to make
sure that your input data was correct.
• Read Results, and Verify Them: Reading output takes place in Post Processing Mode. It
includes:
a) Seeing the results as tables and/or as graphical output.
b) Changing the scale of each graphical output to visualize the correct shapes, and
showing values, or hiding them.
• After reading and verifying your results you may decide to go back to your Modelling Mode
to alter your input file, for either to correct the input file, or to change some values to examine
different results. The input file always has extension of STD.
1.4.1. Creating New File: Creating new file in STAAD Pro can be done in two different
ways:
• Once you started the software.
• The software is already running and you want to create new file, select File/New,
or click the New Structure button in the File toolbar. In both ways, the same dialog
box will be displayed.
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• STAAD Pro can deal with single file at a time, so, if you attempt to create a new file, while
another file is opened, STAAD Pro will close it right away. The parts of this dialog box are:
a) File Name: Specify the name of the new file (no need to type .STD, STAAD will do that
for you); file names in STAAD Pro can take long file names.
b) Location: Specify where you will save this file in your local hard drives, or any network
hard drive, and then specify the folder name (subdirectory) (example F:\SPRO\
STAAD\Examples), To change these settings, simply click the three dots button, and the
following dialog will appear:
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1.4.3. Length and Force Units: When you install the software at your hard drive, the
installation software will ask you to specify what is your default unit system, English (ft, inch,
kips) or Metric (m, mm, KN). For this courseware we chose Metric, hence the default Length
and Force Units are Meter, and Kilo Newton respectively.
This will be to-start-with units, and not the only units you can use while you are creating
the input file. As a user you have the ability to change the units at any point to whatever
desired units (STAAD internally will make the necessary conversion).
When you are done click Next in order to proceed.
The following dialog box will be displayed:
The only purpose of this dialog box is to ask the user what is the first step to be done in
creating the input file? We will choose the last option: Edit Job Info, as all of the other
options will be discussed while we are in the Geometry part of the input file.
To finish creating a file in STAAD Pro, click Finish.
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1.4.4 STAAD Pro Screen Organization
A sample of the STAAD Pro screen is given in figure below. The screen has
major elements as described below.
Menu Bar: Located at the top of the screen, the Menu bar gives access to all the facilities
of STAAD Pro.
Tool Bar: The dock able Toolbar gives access to the most frequently used commands.
You may also create your own customized toolbar.
Main Window: This is the largest area at the center of the screen, where the model and
the results are displayed.
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Page Control: The Page Control is a set of tabs that appear to the left of the Main
Window. There are two rows of tabs for accessing Pages and Subpages. Each Page
allows access to certain Subpages. Each Subpage allows you to perform specific tasks.
The organization of the Pages, from top to bottom, represents the logical sequence of
operations, for example, definition of beams, specification of member properties, loading,
and so on. Each "Page" tab has a name and an icon for easy identification. The name on
the tabs may or may not appear depending on your screen resolution and the size of the
STAAD/Pro window. However, the icons on the Page Control tabs always appear. The
Pages in the Page Control area depend on the Mode of operation. The mode of operation
may be set from the Mode menu from the Menu bar.
Data Area: The right part of the screen is called the Data Area, where different dialog
boxes, tables, list boxes, etc. appear depending on the type of operation you are
performing. For example, when you select the Geometry | Beam Page, the Data Area
contains the Node- Coordinate table and the Member-incidence table. When you are in
the General | Load Page, the contents of the Data Area changes to display the currently
assigned Load cases and the Load Specification dialog box.
Notes on Page Control & Data Area: Page Control is another way (after menus, and
toolbars) to execute commands in STAAD Pro.
Page Controls are:
The tabs that appear at the left of the main window.
Each Page Control has its own sub-pages.
Each Page Control has its own function, which will help the user to accomplish
one of the tasks required.
The sequence of the Page Control is meant to be like this. If you follow the pages and
sub-pages in this sequence, you will fulfill the task of creating a complete input file,
without missing any essential detail. This method helps doing your job, fast and accurate.
Page Control is meaningless without the linked Data Area (the part at the right of the
main window). Data Area will give two things:
It will show the relevant data of your structure related to the current Page Control (e.g. If
you are in the Geometry Page Control, Data Area will show Node Coordinates and
Beams Incidences)
It will show relevant buttons (which represents commands) to add/edit commands related
to the current Page Control.
In this courseware will concentrate more on toolbars, and Page Control & Data Area in
issuing STAAD Pro commands, and utilities.
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Open an Existing File: Opening an existing file in STAAD Pro can take place in three
different ways. While you are starting STAAD Pro, select Recent Files, the following dialog
box will appear.
If your file is not among the files listed, simply click other button, select the desired drive,
and folder, then select STAAD Profile, and click Open. Check the below dialog box:
1.4.6 Exiting STAAD Pro: To exit STAAD Pro select File/Exit and STAAD Pro will close
the current file, and exit the software. The only difference between closing a file and exiting
STAAD Pro is the closing of the software, and the rest is the same.
1.4.7 Saving and Saving As:
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i) To save the current file, you can select File/Save, or click the Save button in the File
toolbar
ii) To save the current file under a new name, simply select File/Save As, the below
dialog box will be displayed.
The software is already running, and you want to open another file, select File/Open, or
click Open Structure button from the File toolbar, as a result the same dialog box will
appear, do as listed above.
First select the desired drive, and folder. Then, type in the file name, leave the file type to be
STAAD Space File (*.std), click Save.
2. Using the Editor or Command File which comes built in to the STAAD Programme.
The Command File is a text file which contains the data for the structure being
modeled. This file consists of simple English-language like commands. This command file
may be created directly using the editor built into the program, or for that matter, any editor
which saves data in text form, such as Notepad or WordPad available in Microsoft Windows.
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This command file is also automatically created behind the scenes when the structure is
generated using the Graphical User Interface.
In order to build up a good input file we have to understand STAAD Pro way. This
procedure will enable us to:
Organize our thoughts.
Put each step in its right position, not before, and not after.
Make sure that all of the STAAD Pro commands are present in the input fil (none
of them is overlooked).
Provide us with speedy and guaranteed way to create the input file.
Avoid error messages.
If this path was followed sincerely, the creation time of your input file will be cut by 50%,
that's why this will be our procedure throughout this courseware.
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As you can see from the above flow chart, the second step after creation of a new file is to
input the Geometry of your structure. Geometry is the subject of this module, so; what
exactly STAAD Pro means by Geometry?
Geometry is the “skeleton of your structure”, or, in other words Geometry is “the members
(beams and columns), and the plates (slabs, walls, and raft foundations)”. Through the
information you will provide in this part of the input file, STAAD Pro will understand the
following:
In which plane (X-Y, Y-Z, X-Z, or any other custom planes) each member and plate is
defined?
What is the dimension of each member, and plate?
What is angle of each member in the space?
How members are connected to each other, and how they are connected to the plates?
1.5.1 What are Nodes, Beams, and Plates?
Node: Node in STAAD Pro means; Stiffed joint with 6 reactions. It is located at each end
of Beam, and each corner of Plate. Nodes considered the essence of the Geometry of any
structure in STAAD Pro. Each Node will hold the following information:
Node Number.
Node Coordinate in XYZ space.
Beam: Beam in STAAD Pro means; any member in the structure. It can be beam,
column, bracing member, or truss member. Beams are actually defined based on the Nodes at
their ends. Each Beam will hold the following information:
Beam Number.
The Node numbers at its ends.
Example: Node # 1 Coordinate is 0,0,0
Node # 2 Coordinate is 0,2,0
Node # 3 Coordinate is 2,2,0
Node # 4 Coordinate is 2,0,0
Beam # 1 Between Node 1 and 2
Beam # 2 Between Node 2 and 3
Beam # 3 Between Node 3 and 4
Note: Z coordinate in all coordinates is 0; hence this structure lies in the X-Y plane. See the
figure below.
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Plate: Plate in STAAD means; a thin shell with multi-nodded shape starting from 3 nodes,
and more. It can be anything of slab, wall, or raft foundation. Each Plate will hold the following
information:
Plate Number.
Node Numbers at each corner of it.
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1.5.2 How things are done in the Input File?
STAAD Pro will create the contents of the input file concerning geometry, and hence it
will number all the Nodes, Beams, and Plates. But how they are created?
STAAD has its own syntax of creating the input file, goes like this:
JOINT COORDINATES: 1 0 0 0; 2 0 2 0; 3 2 2 0; 4 2 0 0; 5 0 0 2; 6 0 2 2; 7 2 2 2; 8 2 0 2;
MEMBER INCIDENCES: 1 1 2; 2 2 3; 3 3 4; 4 2 6; 5 3 7; 6 5 6; 7 6 7; 8 7 8
ELEMENT INCIDENCES: 9 3 4 8 7;
Did you understand what each number means in the three sections?
1.5.2.1 Explanation:
a) About Joint Coordinates:
The first number is the Node Number.
The three other digits are the coordinates of the Node.
Semi-colon is used to separate each Node data from the other.
If one line in the editor is not enough, you can use the next line without semi-colon.
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b) About Member Incidences:
The first number is the Beam Number.
The other two digits represent the Node numbers at its ends.
Semi-colon is used to separate each Beam data from the other.
If one line in the editor is not enough, you can use the next line without semi-colon.
c) About Element Incidences:
The first number is the Plate Number.
The other four digits represent the node numbers at its corners (this example contains
a 4 noded plate, hence we used four digits, but this number can be reduced to 3, or
increased to more than 4)
Semi-colon is used to separate each Plate data from the other.
If one line in the editor is not enough, you can use the next line without semi-colon.
1.5.2.2 Clarification: We have to clarify some naming convention problems, which may confuse
the reader of this courseware. STAAD Pro uses the following terms in the graphical part of
Modeling Mode:
Node
Beam
Plate
On the other hand, STAAD Pro uses the following naming convention for the same in the
text editor:
Node becomes Joint.
Beam becomes Member
Plate becomes Element
This confusion is a result of joining QSE and STAAD-III for Windows; accordingly the
first set of naming is used by QSE, whereas the second set is used by STAAD-III for Windows.
After the emergence of the two software packages, each software package kept its own naming
convention. Within our discussion we will use the first naming convention (namely; Node,
Beam, and Plate).
Another naming convention, which may create confusion, is when STAAD Pro calls
Beam for both beams and columns. That is correct almost in all of the places of the software
except in the concrete design module, when the software distinguish beams from columns. So, if
we want to select a column in STAAD Pro, and you read in this courseware click on the Beams
Cursor, don’t get confused.
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1.6 Introduction to STAAD Pro Screen Management
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Steps:
1. We selected the Add Beam option earlier to facilitate adding beams to create the structure.
This initiates a grid in the main drawing area as shown above. The directions of the global axes
(X, Y, Z) are represented in the icon in the lower left hand corner of the drawing area.
A Snap Node/Beam dialog box also appears in the data area on the right side of the
screen. In our structure, the segment consisting of members 1 to 3, and nodes 1 to 4, happens to
lie in the X-Y plane. So, in this dialog box, let us keep X-Y as the Plane of the grid. The size of
the model that can be drawn at any time is controlled by the number of Construction Lines to the
left and right of the origin of axes, and the Spacing between adjacent construction lines.
2. To start creating the nodes, let us first activate the Snap Node/Beam button by clicking on it.
Then, with the help of the mouse, click at the origin (0, 0) to create the first node.
A Snap Node/Beam dialog box also appears in the data area on the right side of the
screen. The Linear tab is meant for placing the construction lines perpendicular to one another
along a "left to right - top to bottom" pattern, as in the lines of a chess board. The Radial tab
enables construction lines to appear in a spider-web style, which makes it is easy to create
circular type models where members are modelled as piece-wise linear straight line segments.
The Irregular tab can be used to create gridlines with unequal spacing that lie on the global
planes or on an inclined plane. We will use the linear tab.
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1.7.1 Geometry Creation Methods:
STAAD Pro comes with intelligent, accurate, speedy, error-free, and graphical methods
to accomplish the creation of Geometry. These are:
Drafting the geometry using the Snap/Grid.
Using Copy/Cut, with Paste.
Using Structure Wizard.
Using Spreadsheet (namely; Excel) Copy and Paste.
Using DXF importing file function.
Each one of these 5 methods (by itself) can help the user reduce the time of creating the
geometry needed. Alternatively, user can’t accomplish the whole process of creating geometry
with any of these methods alone; instead, user will need more functions to make necessary
modification on the geometry to render the final shape. These functions will be the subject of
Module 3.
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7. Now your model will look like following image:
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13. Using the same methods discussed in this exercise try to create additional
members to make the structure look like this:
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20. Three green plates are drafted now as shown below.
Before we go on with the rest of the methods to create geometry, we have to discuss two
important functions, which will help us accomplish the rest of the methods swiftly. These two
functions are: Viewing your geometry and Selecting Nodes, Beams, and Plates.
1.7.1.1.1 Viewing: In previous part of this courseware we went through the four viewing
functions in Structure Wizard, these four and three more are available in STAAD Pro.
View from +Z (It is Elevation in Structure Wizard). You can consider it the Front view.
View from –Z, is the Back view.
View from –X, is the Left view.
View from +X, (It is Side in Structure Wizard). You can consider it the Right view.
View from +Y, (It is Top in Structure Wizard).
View from –Y, is the Bottom view.
Isometric, is the isometric view.
We have 6-rotation function, which capable of rotating the geometry around a specific
axis, these are:
Rotate Up & Rotate Down (Rotating around X in both directions).
Rotate Left & Rotate Right (Rotating around Y in both directions).
Spin Left & Spin Right (Rotating around Z in both directions).
Note: You can use the arrows in your keyboard also.
Use Right arrow / Left arrow to rotate around Y-axis and Up arrow / Down arrow to
rotate around X-axis.
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1.7.1.2 Using Structure Wizard to Create Bay Frame:
Structure Wizard is a library of pre-defined structural shapes allows the user to
create a full structure by answering simple questions about the dimensions of members
in each axis. From the menus select Geometry/Run Structure Wizard; the following
window will appear:
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Exercise – 2: Design of beams for various supports (SSB, CT and FX)
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Exercise – 3: Design of beams for various supports (SSB, OHB, CT and FX) with UVL and
ML
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Exercise – 4:
a. Analysis & Design of a Single-storied building (2D frame)
kN
5 kN/m
5m
3m
Fig:1
-
kN/m
kN 5m
Fig:2
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b. Analysis & Design of a Multi-storied building (2D frame)
kN
kN/m
kN
kN
kN
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Exercise – 5: Analysis & Design of a Single-storied building (3D frame)
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ATTRIBUTE DATA
Member properties Columns: 230mm x 300mm
Beams: 230mm x 450mm
Material Constants Grade of Concrete: M20
Modulus of Elasticity: 2.2x104 MPa
Poisson’s Ratio : 0.17
Supports All fixed
Loads Load case 1 : Dead load (self weight in global y direction)
9” Wall load/member load (unit wt of brick=20 k N/m3)
Floor Load (0.115 m thick slab) = 3 kN/m2
Floor Finishes = 1.5 kN/m2
Load case 2 : Live load = 2 kN/m2
Load case 3 : Combination of Load 1.5 (DL + LL)
Analysis Type Linear Elastic (PERFORM)
Concrete design Indian code IS-456-2000
Consider load case 3 only
Steel Yield Stress : 415 MPa
Grade of Concrete: M20
Parameters: Max dia of main reinforcement-20mm
Min dia of main reinforcement-12mm
Min dia of shear reinforcement-8 mm
Cover to reinforcement in beams:25 mm
Cover to reinforcement in columns:40mm
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b) By using Structure Wizard, create the structure shown below with same properties
given in above table.
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c) Analyse and Design the multi storied building (G+2) given below with same properties given
in above table.
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Fig. Shows the Geometry of the Structure with Ground Floor
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Fig. Shows the Geometry of the Structure with G+2 Floors
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Fig. Shows the Geometry of the Structure with full section
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Fig. Shows the Geometry of the Structure with loads
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The Input File of the Above Problem:
STAAD SPACE G+3
START JOB INFORMATION
ENGINEER DATE 17-Dec-14
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 3.28 0 0; 3 7.39 0 0; 4 0 0 4.57; 5 3.28 0 4.57; 6 7.39 0 4.57;
7 0 0 8.23; 8 4.8 0 8.23; 9 7.39 0 8.23; 10 0 0 12.04; 11 3.28 0 12.04;
12 7.39 0 12.04; 13 0 0 14.04; 14 7.39 0 14.04; 15 0 3.2 0; 16 3.28 3.2 0;
17 7.39 3.2 0; 18 0 3.2 4.57; 19 3.28 3.2 4.57; 20 7.39 3.2 4.57;
21 0 3.2 8.23; 22 4.8 3.2 8.23; 23 7.39 3.2 8.23; 24 0 3.2 12.04;
25 3.28 3.2 12.04; 26 7.39 3.2 12.04; 27 0 3.2 14.04; 28 7.39 3.2 14.04;
29 0 6.4 0; 30 3.28 6.4 0; 31 7.39 6.4 0; 32 0 6.4 4.57; 33 3.28 6.4 4.57;
34 7.39 6.4 4.57; 35 0 6.4 8.23; 36 4.8 6.4 8.23; 37 7.39 6.4 8.23;
38 0 6.4 12.04; 39 3.28 6.4 12.04; 40 7.39 6.4 12.04; 41 0 6.4 14.04;
42 7.39 6.4 14.04; 43 3.28 6.4 14.04; 44 3.28 6.4 8.23; 45 0 9.6 0;
46 3.28 9.6 0; 47 7.39 9.6 0; 48 0 9.6 4.57; 49 3.28 9.6 4.57;
50 7.39 9.6 4.57; 51 0 9.6 8.23; 52 4.8 9.6 8.23; 53 7.39 9.6 8.23;
54 0 9.6 12.04; 55 3.28 9.6 12.04; 56 7.39 9.6 12.04; 57 0 9.6 14.04;
58 7.39 9.6 14.04; 59 3.28 9.6 8.23; 60 3.28 9.6 14.04; 61 0 12.8 0;
62 3.28 12.8 0; 63 7.39 12.8 0; 64 0 12.8 4.57; 65 3.28 12.8 4.57;
66 7.39 12.8 4.57; 67 0 12.8 8.23; 68 4.8 12.8 8.23; 69 7.39 12.8 8.23;
70 0 12.8 12.04; 71 3.28 12.8 12.04; 72 7.39 12.8 12.04; 73 0 12.8 14.04;
74 7.39 12.8 14.04; 75 3.28 12.8 8.23; 76 3.28 12.8 14.04; 77 0 16 0;
78 3.28 16 0; 79 7.39 16 0; 80 0 16 4.57; 81 3.28 16 4.57; 82 7.39 16 4.57;
83 0 16 8.23; 84 4.8 16 8.23; 85 7.39 16 8.23; 86 0 16 12.04; 87 3.28 16 12.04;
88 7.39 16 12.04; 89 0 16 14.04; 90 7.39 16 14.04; 91 3.28 16 8.23;
92 3.28 16 14.04;
MEMBER INCIDENCES
1 1 15; 2 2 16; 3 3 17; 4 4 18; 5 5 19; 6 6 20; 7 7 21; 8 8 22; 9 9 23;
10 10 24; 11 11 25; 12 12 26; 13 13 27; 14 14 28; 101 15 29; 102 16 30;
103 17 31; 104 18 32; 105 19 33; 106 20 34; 107 21 35; 108 22 36; 109 23 37;
110 24 38; 111 25 39; 112 26 40; 113 27 41; 114 28 42; 201 29 45; 202 30 46;
203 31 47; 204 32 48; 205 33 49; 206 34 50; 207 35 51; 208 36 52; 209 37 53;
210 38 54; 211 39 55; 212 40 56; 213 41 57; 214 42 58; 301 45 61; 302 46 62;
303 47 63; 304 48 64; 305 49 65; 306 50 66; 307 51 67; 308 52 68; 309 53 69;
310 54 70; 311 55 71; 312 56 72; 313 57 73; 314 58 74; 401 61 77; 402 62 78;
403 63 79; 404 64 80; 405 65 81; 406 66 82; 407 67 83; 408 68 84; 409 69 85;
410 70 86; 411 71 87; 412 72 88; 413 73 89; 414 74 90; 1001 15 16; 1002 16 17;
1003 18 19; 1004 19 20; 1005 21 22; 1006 22 23; 1007 24 25; 1008 25 26;
1009 27 28; 1010 15 18; 1011 18 21; 1012 21 24; 1013 24 27; 1014 16 19;
1015 17 20; 1016 20 23; 1017 23 26; 1018 26 28; 2001 29 30; 2002 30 31;
2003 32 33; 2004 33 34; 2005 35 44; 2006 36 37; 2007 38 39; 2008 39 40;
2009 29 32; 2010 32 35; 2011 35 38; 2012 38 41; 2013 30 33; 2014 44 36;
2015 33 44; 2016 44 39; 2017 39 43; 2018 31 34; 2019 34 37; 2020 37 40;
2021 40 42; 2022 41 43; 2023 43 42; 3001 45 46; 3002 46 47; 3003 48 49;
42
3004 49 50; 3005 51 59; 3006 52 53; 3007 54 55; 3008 55 56; 3009 45 48;
3010 48 51; 3011 51 54; 3012 54 57; 3013 46 49; 3014 59 52; 3015 49 59;
3016 59 55; 3017 55 60; 3018 47 50; 3019 50 53; 3020 53 56; 3021 56 58;
3022 57 60; 3023 60 58; 4001 61 62; 4002 62 63; 4003 64 65; 4004 65 66;
4005 67 75; 4006 68 69; 4007 70 71; 4008 71 72; 4009 61 64; 4010 64 67;
4011 67 70; 4012 70 73; 4013 62 65; 4014 75 68; 4015 65 75; 4016 75 71;
4017 71 76; 4018 63 66; 4019 66 69; 4020 69 72; 4021 72 74; 4022 73 76;
4023 76 74; 5001 77 78; 5002 78 79; 5003 80 81; 5004 81 82; 5005 83 91;
5006 84 85; 5007 86 87; 5008 87 88; 5009 77 80; 5010 80 83; 5011 83 86;
5012 86 89; 5013 78 81; 5014 91 84; 5015 81 91; 5016 91 87; 5017 87 92;
5018 79 82; 5019 82 85; 5020 85 88; 5021 88 90; 5022 89 92; 5023 92 90;
DEFINE MATERIAL START
ISOTROPIC CONCRETE
E 2.17185e+007
POISSON 0.17
DENSITY 23.5616
ALPHA 5.5e-006
DAMP 0.05
END DEFINE MATERIAL
CONSTANTS
MATERIAL CONCRETE MEMB 1 TO 14 101 TO 114 201 TO 214 301 TO 314 401 TO
414 -
1001 TO 1018 2001 TO 2023 3001 TO 3023 4001 TO 4023 5001 TO 5023
MEMBER PROPERTY INDIAN
1001 TO 1018 2001 TO 2023 3001 TO 3023 4001 TO 4023 5001 TO 5022 -
5023 PRIS YD 0.3 ZD 0.23
2 11 102 111 202 211 302 311 402 411 PRIS YD 0.381 ZD 0.23
5 8 105 108 205 208 305 308 405 408 PRIS YD 0.45 ZD 0.23
1 3 4 6 9 10 12 101 103 104 106 109 110 112 201 203 204 206 209 210 212 301 -
303 304 306 309 310 312 401 403 404 406 409 410 412 PRIS YD 0.23 ZD 0.381
7 107 207 307 407 PRIS YD 0.23 ZD 0.45
13 14 113 114 213 214 313 314 413 414 PRIS YD 0.23 ZD 0.3
SUPPORTS
1 TO 14 FIXED
LOAD 1 DEAD LOAD
SELFWEIGHT Y -1
MEMBER LOAD
1001 1002 1008 1010 1011 1015 1016 2001 2002 2007 TO 2011 2018 TO 2020 3001 -
3002 3007 TO 3011 3018 TO 3020 4001 4002 4007 TO 4011 4018 TO 4020 5001 5002 -
5007 TO 5011 5018 TO 5020 UNI GY -12.5
1003 TO 1007 1009 1012 TO 1014 1017 1018 2003 TO 2006 2012 TO 2016 -
2021 TO 2023 3003 TO 3006 3012 TO 3016 3021 TO 3023 4003 TO 4006 -
4012 TO 4016 4021 TO 4023 5003 TO 5006 5012 TO 5016 5021 TO 5022 -
5023 UNI GY -6.5
FLOOR LOAD
YRANGE 6.4 16 FLOAD -4.5 XRANGE 0 7.39 ZRANGE 0 14.04
LOAD 2 LIVE LOAD
FLOOR LOAD
43
YRANGE 6.4 16 FLOAD -2 XRANGE 0 7.39 ZRANGE 0 14.04
******************
LOAD COMBINATION 3
1 1.5 2 1.5
*****************
PERFORM ANALYSIS
LOAD LIST 3
PRINT ANALYSIS RESULTS
PRINT MEMBER FORCES LIST 1 TO 14 101 TO 114 201 TO 214 301 TO 314 401 TO
414
START CONCRETE DESIGN
CODE INDIAN
UNIT MMS NEWTON
FYMAIN 415 ALL
FC 20 ALL
MINMAIN 12 ALL
MAXMAIN 20 ALL
CLEAR 25 MEMB 1001 TO 1018 2001 TO 2023 3001 TO 3023 4001 TO 4023 5001 TO
5023
CLEAR 40 MEMB 1 TO 14 101 TO 114 201 TO 214 301 TO 314 401 TO 414
TRACK 2 MEMB 1001 TO 1018 2001 TO 2023 3001 TO 3023 4001 TO 4023 5001 TO
5023
DESIGN BEAM 1001 TO 1018 2001 TO 2023 3001 TO 3023 4001 TO 4023 5001 TO
5023
TRACK 1 MEMB 1 TO 14 101 TO 114 201 TO 214 301 TO 314 401 TO 414
DESIGN COLUMN 1 TO 14 101 TO 114 201 TO 214 301 TO 314 401 TO 414
END CONCRETE DESIGN
FINISH
44
Exercise – 6 : Analysis and Design of multi-storied building (3D frame) with DL
LL and WL
ATTRIBUTE DATA
Member properties Columns: 230mm x 300mm
Beams: 230mm x 450mm
Material Constants Grade of Concrete: M25
Modulus of Elasticity: 2.2x104 MPa
Poisson’s Ratio : 0.17
Supports All fixed
Loads Load case 1 : Dead load (self weight in global y direction)
9” Wall load/member load (unit wt of brick=20 k N/m3)
Floor Load (0.115 m thick slab) = 3 kN/m2
Floor Finishes = 1.5 kN/m2
Load case 2 : Live load = 2 kN/m2
Load case 3 : Wind Load(WL)
Load case 4 : Combination of Load 1.5 (DL + LL+WL)
Analysis Type Linear Elastic (PERFORM)
Concrete design Indian code IS-456-2000
Consider load case 3 only
Steel Yield Stress : 415 MPa
Grade of Concrete: M25
Parameters: Max dia of main reinforcement-20mm
Min dia of main reinforcement-12mm
Max dia of secondary reinforcement-10 mm
Min dia of shear reinforcement-8 mm
Cover to reinforcement in beams:25 mm
Cover to reinforcement in columns:40mm
45
Fig. Shows the Geometry of the Structure with G+4 Floors
46
Fig. Shows the Geometry of the Structure with Wind Load
47
Exercise – 7 : Analysis and Design of multi-storied building (3D frame) with DL
LL and EL
ATTRIBUTE DATA
Member properties Columns: 230mm x 300mm
Beams: 230mm x 450mm
Material Constants Grade of Concrete: M25
Modulus of Elasticity: 2.2x104 MPa
Poisson’s Ratio : 0.17
Supports All fixed
Loads Load case 1 : Dead load (self weight in global y direction)
9” Wall load/member load (unit wt of brick=20 k N/m3)
Floor Load (0.115 m thick slab) = 3 kN/m2
Floor Finishes = 1.5 kN/m2
Load case 2 : Live load = 2 kN/m2
Load case 3 : Earthquake Load(EL)
Code for EL: IS 1893(Part-I)-2002/2005
Load case 4 : Combination of Load 1.5 (DL + LL+EL)
Analysis Type Linear Elastic (PERFORM)
Indian code IS-456-2000
Consider load case 3 only
Steel Yield Stress : 415 MPa
Grade of Concrete: M25
Parameters: Max dia of main reinforcement-25mm
Min dia of main reinforcement-12mm
Max dia of secondary reinforcement-10 mm
Min dia of shear reinforcement-8 mm
Cover to reinforcement in beams:25 mm
Cover to reinforcement in columns:40mm
48
Fig. Shows the Geometry of the Structure with G+4 Floors
49
Exercise – 8 : Analysis and Design of multi-storied building (3D frame) with
plates
ATTRIBUTE DATA
Member properties Columns: 230mm x 300mm
Beams: 230mm x 450mm
Plate Thickness: 0.15 m
Material Constants Grade of Concrete: M25
Modulus of Elasticity: 2.2x104 MPa
Poisson’s Ratio : 0.17
Supports All fixed
Loads Load case 1 : Dead load (self weight in global y direction)
9” Wall load/member load (unit wt of brick=20 k N/m3)
Floor Load (0.115 m thick slab) = 3 kN/m2
Floor Finishes = 1.5 kN/m2
Load case 2 : Live load = 2 kN/m2
Load case 3 : Combination of Load 1.5 (DL + LL)
Analysis Type Linear Elastic (PERFORM)
Concrete design Indian code IS-456-2000
Consider load case 3 only
Steel Yield Stress : 415 MPa
Grade of Concrete: M25
Parameters: Max dia of main reinforcement-20mm
Min dia of main reinforcement-12mm
Max dia of main reinforcement-10mm
Min dia of shear reinforcement-8 mm
Cover to reinforcement in beams:25 mm
Cover to reinforcement in columns:40mm
50
Fig. Shows the Geometry of the Structure with G+4 Floors
51
Exercise – 9 : Analysis and Design of multi-storied building (3D frame) and Result
analysis
52
53
Exercise – 10: Analysis and Design of RCC Rectangular Over Head Tank
ATTRIBUTE DATA
Geometry Depth of water including free board(0.2m): 4m
Unit weight of water 9800 kN/m3
Height of OHT (upto base slab) = 10 m (4+4+2)m
Member properties Columns: 300mm dia
Ring Beam: 300mm x 450mm
Plate Thickness:0.15m
Material Constants Grade of Concrete: M20
Modulus of Elasticity: 2.2x104 MPa
Poisson’s Ratio : 0.17
Supports All fixed
Loads Load case 1 : Dead load (self weight in global y direction)
6” Retaining Wall load (unit wt of concrete = 25 k N/m3)
Floor Load (0.115 m thick slab) = 3 kN/m2
Floor Finishes = 1. 5kN/m2
Load case 2 : Take Live load as per IS 875 (Part-2)
Load case 3 : Combination of Load 1.5 (DL + LL)
Analysis Type Linear Elastic (PERFORM)
Concrete design Indian code IS-456-2000
Consider load case 3 only
Steel Yield Stress : 415 MPa
Grade of Concrete: M20
Parameters : Max dia of main reinforcement-20mm
Min dia of main reinforcement-12mm
Min dia of shear reinforcement-8 mm
Cover to reinforcement in beams:25 mm
Cover to reinforcement in columns:40mm
54
Fig. Shows the Geometry of the Rectangular Over Head Water Tank
Fig. Shows the Geometry of the Rectangular Over Head Water Tank
55
Exercise – 11: Analysis & Design of a R.C.C Over Head Circular Tank for
1,50,000 litres
ATTRIBUTE DATA
Geometry Depth of water including free board(0.2m): 4m
Unit weight of water 9800 kN/m3
Let the Rise of the Dome is 2m
Height of OHT (upto base slab) = 12 m (3m Each floor)
Member properties Columns: 300mm dia
Ring Beams: 300mm x 450mm
Material Constants Grade of Concrete: M20
Modulus of Elasticity: 2.2x104 MPa
Poisson’s Ratio : 0.17
Supports All fixed
Loads Load case 1 : Dead load (self weight in global y direction)
6” Retaining Wall load (unit wt of concrete = 25 k N/m3)
Floor Load (0.115 m thick slab) = 3 kN/m2
Floor Finishes = 1.5 kN/m2
Load case 2 : Take Live load as per IS 875 (Part-2)
Load case 3 : Combination of Load 1.5 (DL + LL)
Analysis Type Linear Elastic (PERFORM)
Concrete design Indian code IS-456-2000
Consider load case 3 only
Steel Yield Stress : 415 MPa
Grade of Concrete: M20
Parameters : Max dia of main reinforcement-20mm
Min dia of main reinforcement-12mm
Min dia of shear reinforcement-8 mm
Cover to reinforcement in beams:25 mm
Cover to reinforcement in columns:40mm
56
57
Exercise – 12: Design of Steel beams for various cross sections
a) By using I & T – sections analyze and design a beam for the given loads
Fig-1
b) By using I & C – section analyze and design the columns for the given loads
kN
kN/m
Fig-2
c) By using L– section analyze and design the frame for a given load
58
Exercise – 13: Analysis and Design of various Steel Tubular Trusses
ATTRIBUTE DATA
Member properties Choose from Steel Table
Material Constants Modulus of Elasticity : 2 X 105 MPa
Poisson’s Ratio : 0.3
Supports Support A is a hinge
Support B is a roller
Loads Load case 1 : Dead load(self weight in global y direction)
Load case 2 : Live load: As per IS-875 (part-II)
Load case 3 : Wind load As per IS-875 (part-III)
Region: Hyderabad(wind velocity:44m/sec)
Wind uplift should be taken in to account
Load case 4 : combination load 1.5 (DL + LL)
Load case 5 : combination load 1.2 (DL + LL+WL)
Analysis Type Linear Elastic (PERFORM)
Steel design Indian code IS-800-2007
Consider load case 4 and 5 only
Steel Yield Stress : 250 MPa
Track 1.0 all
59
Input File of the above Problem:
STAAD TRUSS
START JOB INFORMATION
ENGINEER DATE 30-Apr-10
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 3 0 0; 3 6 0 0; 4 9 0 0; 5 12 0 0; 6 3 4 0; 7 6 4 0; 8 9 4 0;
MEMBER INCIDENCES
1 1 2; 2 2 3; 3 3 4; 4 4 5; 5 6 7; 6 7 8; 7 8 5; 8 6 1; 9 7 3; 10 6 2; 11 8 4;
12 6 3; 13 8 3;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 2.05e+008
POISSON 0.3
DENSITY 76.8195
ALPHA 1.2e-005
DAMP 0.03
END DEFINE MATERIAL
MEMBER PROPERTY INDIAN
7 8 TABLE ST PIP1270.0M
9 TO 13 TABLE ST PIP483.0M
1 TO 6 TABLE ST PIP483.0M
CONSTANTS
MATERIAL STEEL MEMB 1 TO 13
SUPPORTS
1 PINNED
5 ENFORCED BUT FX MX MY MZ
LOAD 1 LOADTYPE None TITLE LOAD CASE 1
JOINT LOAD
60
2 TO 4 FY -60
PERFORM ANALYSIS PRINT ALL
PARAMETER
CODE INDIAN
TRACK 1 ALL
CHECK CODE ALL
FINISH
61
Exercise – 14: Analysis and Design of Industrial buildings with various Trusses
62
ATTRIBUTE DATA
Geometry Span = 15 m
Length of Shed = 40 m (Each Bay 4m)
Column Height = 5m (Each 2.5 m)
Rise of Truss = 2 m
63
Exercise – 15: Analysis and Design of Steel Over Head Tank
ATTRIBUTE DATA
Member properties Choose from Steel Table
Material Constants Modulus of Elasticity : 2 X 105 MPa
Poisson’s Ratio : 0.3
Supports All are Fixed
Loads Load case 1 : Dead load(self weight in global y direction)
Load case 2 : Live load: As per IS-875 (part-II)
Load case 3 : Wind load As per IS-875 (part-III)
Region: Hyderabad(wind velocity:44m/sec)
Wind uplift should be taken in to account
Load case 4 : combination load 1.5 (DL + LL)
Load case 5 : combination load 1.2 (DL + LL+WL)
Analysis Type Linear Elastic (PERFORM)
Steel design Indian code IS-800-2007
Consider load case 4 and 5 only
Steel Yield Stress : 250 MPa
Track 1.0 all
64
65