Introduction to StaadPro

Royal University of Bhutan
Jigme Namgyel Engineering College
Department of Civil Engineering & Surveying
Resourced By : Phurba Tamang
Designation: Associate lecturer
Department of Civil Engineering and Surveying
Jigme Namgyel Engineering College
Basic STAAD. Pro Training
“Structural Analysis & Designing Programme/Software”
STAAD. Pro

CONTENT DELIVERY
PRESENTATION
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YOUR CONTENT
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ons of STAAD
ilities of STAAD
B
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workspace (GUI)
commands
e IS Codes
ailing
columns, slabs,
Staad.Pro
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on
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(2D)
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MID-TERM REVIEW, 2017
Introduction
Resourced By: Phurba Tamang, Associate Lecturer, JNEC
• STAAD.Pro is a structural analysis design program software.
• It includes a state of the art user interface, visualization tools
and international design codes.
• It is used for 3D model generation, analysis and multi-material
design.
• The commercial version of STAAD.Pro supports several steel concrete and
timber design codes.
• It is one of the software applications created to help structural engineers to
automate their tasks and to remove the tedious and long procedures of
the manual methods.

History of STAAD. Pro
• STAAD.Pro was originally developed by Research Engineers International
in Yorba Linda, CA.
• In late 2005, Research Engineer International was boughtby Bentley
Systems

History of STAAD. Pro
• A STRUCTURE can be defined as an assemblage of elements. STAAD is
capable of analyzing and designing structures consisting of both frame,
and Finite elements.
• Almost any type of structure can be analyzed by STAAD.
• Frame elements – Beam elements – 2 nodes
• Finite elements – 1.) Plate – 3 or 4 nodes 2.) Solid – 4 to 8 nodes
• In case of STAAD
1. Node becomes Joint it has a number and xyz coordinates
2. Beam becomes Member it has a number and nodes at its ends
3. Plate becomes Element it has a number and node at its corners

Types of Structure
• A TRUSS structure consists of truss members which can have only axial
member forces and no bending in the members.
• A PLANE structure is bound by a global X-Y coordinate system with loads
in the same plane.
• A SPACE structure, which is a three dimensional framed structure with
loads applied in any plane, is the most general.
• A FLOOR structure is a two or three dimensional structure having no horizontal (global
X or Z) movement of the structure [FX, FZ & MY are restrained at every joint]. The
floor framing (in global X-Z plane) of a building is an ideal example of a FLOOR
structure. Columns can also be modelled with the floor in a FLOOR structure as long as
the structure has no horizontal loading. If there is any horizontal load, it must be
analyzed as a SPACE structure.

Versions of STAAD. Pro

Getting Started
Used for
Creating new
drawing
Select the
Structure
Select the Units
(SI Units)

Check the
ADD BEAM
Finish it

MENU BAR
TOOL BARS
MAIN WINDOWS
PAGE CONTROLS
DATA
ENTRY/EDIT

DATA SPREAD SHEET

Familiarization of Tools
• All these options are used to view the structure
• Zoom Extent, Zooming, Panning, 3-D Rendered
View
• Adding Beam, Surface, Plate, etc.
• Selection Options.

Model Generation
• There are basically 3 methods of generating a model
1. Snap node method
2. Coordinate method
3. Copy paste method
• Out of these three methods most commonly used is copy paste method
• By using these three methods a structure of any geometry can be created
• STAAD.Pro also contains a command wizard which is its library of
structures such as frames , trusses are present which can be merged with
the STAAD.Pro model

Exercise
• Create two Nodes at 10 m distance and add a beam. Add fixed supports
at both the ends. Exert a point load of 10 kN at the midspan. Analyse the
beam for Shear Force, Bending Moment, Deflection, etc.
• Create Framed Structure with following coordinates.
Node 1 ( 0,0), Node 2 (0, 3), Node 3 ( 3, 3), Node 4 (3,0)
Analyse the frame with Uniformly Distributed Load of 5 kN/m distributed
completely over the top frame. Provide Fixed Boths at both the ends

Analysis Sequence

Exercise
• Create two Nodes at 10 m distance and add a beam. Add fixed supports
at both the ends. Exert a point load of 10 kN at the midspan. Analyse the
beam for Shear Force, Bending Moment, Deflection, etc.
Way forward
1. Create a member connecting two nodes. ( use may use any method).
2. Assign Fixed Supports
3. Assign Material Properties.
4. Define a Live Load and Assign.
5. Analyse the member.

Defining Property
• Define the property of the member ( Concrete member 30cm x 40cm)
• Go to General -> Load Tab -> Define -> Select Rectangular Section -> Enter Dimension -
> ADD -> Assign the Property to the Member
Choose the
Section
Provide
Dimension and
Click on ADD

• After Assigning the Property to the Member

Defining Loads
• Define the Point Load of 10kN acting vertically from the Centre
Go to General -> Load Tab -> Select Load Case Details -> Select the Loading Type and Title
the Load -> Click ADD -> Click on Defined Load -> Click ADD -> Select Member Load ->
Provide Intensity (-ve) -> Ok -> Assign the Load
Select
and Click
on ADD
Rename the
Force and
Click ADD

Defining Loads
Select
and Click
on ADD
Select the
Member
Load

Defining Loads
Provide Load
Intensity and
Position
The load intensity should be in NEGATIVE value
Assign the
load

Exercise
• Analyse a simple supported beam of Span 5 m with Uniformly Distributed Load of
20kN/m distributed through out the span. Determine the values of Shear and Bending
Moment.
• Analyse the given frame
20 kN
10 kN 5 kN/m
3 m
4 m 4 m
4
m

Introduction to Translational Repeat
Methodology:
Create a Node-> Translating the Node with Link Steps
To access the Command -> Geometry -> Translational Repeat
Creating geometry Using only Translation Repeat
• Create continuous beam of 4m, 5m, 3m span with pinned support.
• Create 2D- G+3 storied building frame 3 bays spaced at 5 m. The height of
the frame is 12 m.

Use Translational Repeat to Create
the above pattern.
( Spacing 3 m bi-directional)
Connect the Nodes with Beam

Create a Frame

Code References
• IS 456 – Reinforced Concrete Design
• IS 800 – Steel Design
• IS 802 – Transmission Tower ( I to III )
• IS 875 – Dead Load ( Part I )
• IS 875 – Live Load ( Part II )
• IS 875 – Wind Load ( Part III )
• IS 875 – Snow Load (Part IV )
• IS 875 – Special Load (Part V )
• IRC 6,18,21 – Bridge Design

Code References
IS 1893:2002/2005 Criteria for Earthquake Resistant Design of Structures
• Part 1: General provisions and Buildings
• Part 2: Liquid Retaining Tanks – Elevated and Ground Supported
• Part 3 : Bridges and Retaining Walls
• Part 4 : Industrial Structures Including Stack Like Structures
• Part 5 : Dams and Embankments

Load Combination
Load Combination as per IS 456
• 1.5 ( DL + IL )
• 1.5 ( DL + WL)
• 1.2 ( DL + IL + WL)
Note: While considering Earthquake Loading, substitute EL for WL
Limit state is a condition just before collapse. A structure designed by limit state should
give proper strength and serviceability throughout its life. In limit state method, the limit
state of collapse deals with the safety of structure and limit state of serviceability deals
with the durability of structure.

Unit Weight
• R.C.C - 25 kN/m3
• P.C.C - 24 kN/m3
• Brick Masonry - 19 kN/m3
• Cement plaster- 20 kN/m3
• Cement - 1440 Kg/m3
• Steel - 7850 Kg/m3
Visit: http://www.dailycivil.com/unit-weight-building-materials/

Concrete Cover

Dead Loads
• RCC Slab
• Beams
• Columns
• Walls
• Plinth Beams
Note: Subtract the openings if any..

Live/Imposed Loads
LIVE LOADS:
1. Live load on slab = 3.0 kN/m2
2. Live load on passage = 3.0 kN/m2
3. Live load on stair = 3.0 kN/m2
Refer IS Code 875 Part 2 Table 1 for more live load cases

Seismic Load
Seismic Load is applied accordance to IS Code 1893:2000 ( Part I )
For Bhutan: Seismic Zone IV or V
Damping Ratio: 5 % (0.05)
Assign other parameters as per the instructions provided below

Defining Seismic Load
Select
Definition and
Click ADD
Select the IS
1893-
2002/2005
and Click on
Generate
Note: Include I893 part 4 if the
structure is an industrial building, if not
keep it unchecked

Wind Load
• Wind Load is considered for Structures having height >10 m
• Wind Intensity should be calculated manually for more accuracy.
• Intensity and Exposure are applied in the directions as required
• General Directions include + X , - X and + Z and - Z
Note: Wind Load and Seismic Load are not used together in any load
combination

Introduction to StaadPro

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