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EE44-E5 CIVIL E5 CIVIL (TECHNICAL)210.212.144.213/course_material/e4e5/civil/PPT/Ch2-E4 E5 Civil...

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For internal circulation of BSNLonly E4 E4-E5 CIVIL E5 CIVIL (TECHNICAL) (TECHNICAL) STAAD PRO STAAD PRO – An Overview An Overview
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  • For internal circulation of BSNLonly

    E4E4--E5 CIVIL E5 CIVIL

    (TECHNICAL)(TECHNICAL)

    STAAD PRO STAAD PRO –– An Overview An Overview

  • WELCOME

    • This is a presentation for the E4-E5 Civil Technical

    Module for the Topic: STAAD PRO – An Overview

    • Eligibility: Those officers of civil wing who have got the

    Up-gradation from E4 to E5.

    • This presentation is last updated on 21-4-2011.

    • You can also visit the Digital library of BSNL to see this

    topic.

    For internal circulation of BSNLonly

  • For internal circulation of BSNLonly

    AGENDA

    Introduction

    Features of STAAD PRO

    Types of structures & Elements

    Axis & Sign Convention in STAAD PRO

    Steps of Design using STAAD PRO

    Typical Command Sequence in STAAD PRO

  • For internal circulation of BSNLonly

    INTRODUCTION

    Use of Computers in Structural Design of Buildings

    • Computers can perform lengthy & tedious computations

    at a very high-speed therefore computer programs are

    used for analysis & design of structural members.

    • Computer results are dependent on effectiveness of

    software as certain assumptions are made in the

    development of programs.

    • But with experience & regular revision & updating, these

    computer programs can be relied upon to give accurate

    results.

  • For internal circulation of BSNLonly

    INTRODUCTION

    • Limitations of Hand Computation Methods

    – Applicable for small problems

    – Tedious for even medium sized problems

    – 3-d analysis almost impossible

    • Advantages of Computer Analysis

    – Matrix methods of structural analysis

    – Development of numerical techniques

    – Finite element method

    – 3-d analysis can be done.

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    STAAD PRO

    Use of Computers in Structural Design of Buildings

    • STAAD PRO is a very powerful software which can

    be used fro 3-D analysis & is useful for analysis and

    design of multi-storied buildings.

    • Full range of analysis including static, P-delta,

    response spectrum, time history, cable etc. and

    • Steel design ,

    • Concrete design and

    • Timber design is available in STAAD PRO

  • For internal circulation of BSNLonly

    STAAD PRO

    STAAD PRO

    It provides the user environment for –

    • Model development (Graphical as well as input

    editor)

    • Model visualization on screen,

    • Analysis & design, and

    • Verification

    • Pre and Post Processor

    • Isometric and perspective view and 3D shapes.

  • For internal circulation of BSNLonly

    Features of STAAD PRO

    Features of STAAD PRO

    • Object-oriented 2D/3D graphical model generation

    with Flexible zoom, pan and multiple views.

    • Built-in command file editor for text edit.

    • Customizable structural templates for creating a

    model.

    • Unlimited Undo and Redo

    • Pull down menus, floating tool bars, tool tip help &

    quick data input through spreadsheets.

    • FPS, Metric or SI units.

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    Features of STAAD PRO

    Features of STAAD PRO

    • Supports truss & beam members, plates, solids, linear

    and non-linear cables & curvilinear beams.

    • Advanced automatic load generation facilities for

    area, floor & moving loads.

    • Display of loads, supports, properties, joints,

    members, etc

    � Rectangular and also cylindrical & reverse cylindrical

    coordinate systems with mix and match capabilities. c

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    Features of STAAD PRO

    Features of STAAD PRO

    • Easy auto mesh & auto refinement of user-defined

    polygonal element boundary by simple mouse clicks,

    including openings & column/ wall lines.

    • Joint, member/ element, mesh generation with flexible

    user-controlled numbering scheme

    • Import/ Export DSF, DWG and Excel files.

    • Presentation quality printer plots of geometry and results

    as part of run output.

    • Efficient algorithm minimizes disk space requirements.

  • For internal circulation of BSNLonly

    Features of STAAD PRO

    Features of STAAD PRO

    Model Generation

    � Easy “snap-to” construction grid for laying out beams

    and columns on irregular grids.

    � Segments of repetitive geometry may be used to

    generate complex structural models.

    � Generate, copy, repeat, mirror, pivot, etc. for quick and

    easy geometry generation.

    � Comprehensive graphical editing.

    � Library of commonly used structures and display of

    properties, loadings, supports, orientations etc.

  • For internal circulation of BSNLonly

    Features of STAAD PRO

    Features of STAAD PRO

    Model Generation

    � Graphical specification & display of properties,

    loadings, supports, orientations etc.

    � Import/Export of Auto Cad 2D/3D files to start model.

    � Access to text editor to modify model quickly through

    command syntax.

    � User-controlled scale factors for deflected shapes.

    � Customizable node/member & renumbering scheme.

  • Analysis & Design

    For internal circulation of BSNLonly

    • Static Analysis

    – Primary

    – P-delta

    – Non-linear

    – Non-Linear Cable

    • Basic Design

    – Steel

    – Concrete

    • Dynamic analysis

    – Rayleigh

    – Eigen Solution

    – Time History

    – Response Spectrum

    • Special Design

    – Aluminum

    – Timber

    – Transmission Tower

  • Structure Types

    For internal circulation of BSNLonly

    Structural Types:

    d

    d

    d

    d

    d

    d

    d

    ud

    d

    u

    u

    u

    d

    u

    u

    GX

    GY

    GZ

    d

    X

    Z

    TRUSS (2D) TRUSS (3D)

    PLANE (2D) SPACE (3D) FLOOR

  • Element Types

    For internal circulation of BSNLonly

    • Structural Elements

    • Line

    • Truss

    • Beam

    • Surface

    • Plate/ Shell

    • Surface

    • Solid

    d

    d

    d

    d

    u

    u

    u

    u

    d

    u u

    d

    d

    d

    d

    d

  • Boundary Condition

    For internal circulation of BSNLonly

    • Fully Restrained

    • Partially restrained w/ Springs

    • Inclined

    • Multilinear

    • Partially Restrained

    Some Special Supports –

    • Elastic footing

    • Elastic Mat

    • Multi-linear Spring

    • Inclined Support

  • Using STAAD PRO

    Using STAAD PRO for Analysis & Design of Building –

    Steps In Design

    • Manual design of slabs, staircases, chajjas, lintels etc.

    • Preparing structural model of building

    • Preparing data for STAAD PRO program at all levels

    i.e load intensities at all floors & wall load etc.

    • Perform Analysis after complete feeding of data and

    obtain the analysis out-put.

    • Once analysis is completed for different load

    combination design is performed for load envelope.

    For internal circulation of BSNLonly

  • Using STAAD PRO

    Using STAAD PRO for Analysis & Design of Building

    – Steps In Design

    • STAAD PRO gives beam and column designs at all levels &

    column reactions for design of foundations.

    • Manual design of footings.

    • After design by STAADPRO we note down area of steel for

    column at various levels & grouping is done.

    • For beams we note down main reinforcement & Shear

    reinforcement at various sections & do detailing.

    • Detailing of reinf done manually as per SP34 & IS 13920

    • Prepare structural drawings using AutoCad or manually.

    For internal circulation of BSNLonly

  • Steps for Static Analysis

    • Geometric Modeling

    • Material Properties

    • Sectional Properties

    • Supports : Boundary Conditions

    • Loads & Load combinations

    • Special Commands

    • Analysis Specification

    • Design Command

    For internal circulation of BSNLonly

  • Geometric Modeling

    • Nodal Co-ordinate Data

    • Selection of Elements : Element Library

    • Beam Elements : Beams, Columns, Truss Members

    • Plate Elements : Structural Walls, Floor Slabs

    • Plane Stress Elements : Shear Walls, Floor Slabs Acting

    As Rigid Diaphragm To Lateral Loading

    • Solid Elements : Thick Raft, Block Foundations

    Surface Element:

    – Rectangular

    – Default Division 10X10, no. can be controlled

    – Mainly introduced for Shear Wall Modeling & Design

    For internal circulation of BSNLonly

  • Sectional & Material Properties

    • Beam Elements : Cross Section• Plate Elements : Thickness• Solid Elements : NIL• Material means a set of:

    – Modulus of Elasticity– Poisson’s Ratio– Weight Density– Thermal Coefficient – Damping Ratio– Shear Modulus

    • Geometric Constant– Beta (�) Angle– Reference Point

    For internal circulation of BSNLonly

  • Axis & Sign Convention

    For internal circulation of BSNLonly

    • Local & Global Axis System for Member– Depends on Connectivity

    – Upward Global Axis

  • Axis & Sign Convention

    For internal circulation of BSNLonly

    •Different Axis Systems for Member Loads (Global-Y is Vertical)

    Local Y Direction (UNI Y -2) Global Y Direction (UNI GY -2)

    Projected Y Direction (UNI PY -2) Theory Projected Y Direction (UNI PY -2) Graphics

  • Axis & Sign Convention

    For internal circulation of BSNLonly

    • Member End Forces - Transnational Degrees

  • Axis & Sign Convention

    For internal circulation of BSNLonly

    Member End Forces – Rotational Degrees

  • LoadsSelf Weight

    Joint Loads

    – Concentrated Load & Moments

    – Support Displacement Loads

    Member Loads

    – Uniform Force & Moment (Full / Partial) (d1, d2, d3)

    – Concentrated Force & Moment (d1, d2)

    – Floor Load & Area Load (new GX, GZ Floor Load)

    – Linear Varying & Trapezoidal Load

    – Pre-Stress / Post-Stress Load

    – Hydrostatic Trapezoidal Load

    – Temperature Load (x, y, z)

    – Fixed End Load

    For internal circulation of BSNLonly

  • Loads

    Plate Element Loads

    Pressure (Full / Partial)

    Concentrated Force (x, y)

    Trapezoidal & Hydrostatic

    Trapezoidal Load

    Surface Element Pressure

    Generated Loads

    Wind Load

    Seismic Co-efficient Method

    Repetitive Moving Load

    Dynamic Loads

    Time History

    Response Spectrum

    Combined Effect of

    Loads

    Combination (Algebraic,

    SRSS, ABS)

    Repeat Load

    For internal circulation of BSNLonly

  • Codes & Shapes

    • Design Codes

    – IS 800 for Steel design

    – IS 456 & 1893 for RCC design

    • Shapes supported

    – Shapes include I-Beams with or without cover plates,

    channels, angles, double angles/ channels, pipes

    and tubes (HSS Sections) for Steel design

    – Also built-in steel tables

    – Design of circular, rectangular, I and L shaped,

    trapezoidal and Tee sections for RCC design.

    For internal circulation of BSNLonly

  • Earthquake Analysis

    • IS 1893 – 2002 (Part 1) Parameters:

    – Seismic Zone Coefficient

    – Response Reduction Factor

    – Importance Factor

    – Soil Site Factor

    – Type of Structure

    – Damping Ratio (obtain Multiplication Factor for Sa/g)

    – Depth of Foundation below Ground Level

    • Reduction of Ah due to Depth of Foundation

    • Acceleration as Function of Time Period and Soil Type

    • Evaluation of Base Shear

    • Distribution of Lateral Storey Forces

    For internal circulation of BSNLonly

  • Typical Command SequenceSTAAD SPACE

    UNIT METER KN

    JOINT COORDINATES

    MEMBER INCIDENCES

    MATERIAL CONSTANTS

    MEMBER PROPERTY

    SUPPORTS

    DEFINE 1893 LOAD

    ZONE…. RF….. I ….

    JOINT WEIGHT

    LOAD 1 SEISMIC X DIRECTION

    LOAD 2 SEISMIC Z DIRECTION

    LOAD 3 LOAD

    SELFWEIGHT

    LOAD 4 ….

    LOAD COMB 11

    PERFORM ANALYSIS

    PRINT SUPPORT REACTION

    START CONCRETE DESIGN

    CODE INDIAN

    FC ….. ALL

    FYMAIN ….. ALL

    FYSEC …. ALL

    DESIGN COLUMN

    DESIGN BEAM

    END CONCRETE DESIGN

    FINISH

    For internal circulation of BSNLonly

  • For internal circulation of BSNLonly


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