«26632 Towne Centre Drive, Suite 210 Foothill Ranch, California 92610 (949) 951-5815 (949) 951-5848 (FAX) Copyright 2012 by RISA ...»
Rapid Interactive Structural Analysis – 3-Dimensional
Version 10.0- General Reference
26632 Towne Centre Drive, Suite 210
Foothill Ranch, California 92610
(949) 951-5848 (FAX)
Copyright 2012 by RISA Technologies, LLC All rights reserved. No portion of the contents of this
publication may be reproduced or transmitted in any means without the express written permission of
RISA Technologies, LLC.
We have done our best to insure that the material found in this publication is both useful and accurate.
However, please be aware that errors may exist in this publication, and that RISA Technologies, LLC makes no guarantees concerning accuracy of the information found here or in the use to which it may be put.
Table of Contents Table of Contents Phi Factors
Before You Begin
Dynamic View Controls
Shortcut Keys and Hot Keys
Limitations – Aus / NZ Codes
Aluminum - Databases
Aluminum Shape Types
Limitations - Euro
Aluminum - Design
Aluminum Design Results
Aluminum Detail Report
Assumptions and Limitations
Creating and Modifying
Boundary Conditions Spreadsheet................ 27 Beam Detail Reports
Boundary Condition Options
Footings at Boundary Conditions
Boundary Conditions at Wall Panels.............. 30 1. Completing the Model
2. Defining Connection Rules
Cold Formed Steel - Databases
Custom vs. Manufacturer Shapes.................. 31 3. Assigning Connection Rules
Cold Formed Shape Types
4. Assigning Load Combinations
Cold Formed Steel - Design
General Reference Manual I Table of Contents
6. Connection Results Viewing
Connection Results Browser
Viewing Results Graphically
Save as Defaults
Mode Shape Results
Member Design Optimization
Member Design Lists
Member Design Rules – Size / U.C................ 89 Dynamic Analysis - Response Spectra.........123 Member Design Rules – Concrete Rebar...... 90 Response Spectra
Design Rules - Diaphragms
Member Optimization Procedure
Modal Combination Option
Diaphragm Modeling Tips
Adding and Editing Spectra
Diaphragms - Analysis and Results.............. 101 Analysis / Loading
Diaphragm Results - Detail Reports............... 101 Single Spectra Plot
Diaphragm Key Plan
Diaphragm Design Limitations
Importing and Exporting Files
Importing DXF Files
Exporting DXF Files
Merge After Importing a DXF File
DXF Element Numbers
DXF File Format
Grid Member Generation
Dynamic Analysis - Eigensolution................. 117 Required Number of Modes
Circular Disk Generation
Rectangular Tank Generation
General Truss Generation
Context Sensitive Help
Controlling the Model View
Viewing Part of the Model
Saving and Retrieving Model Views............... 163 Hot Rolled Steel - Design
Design Parameters Spreadsheet
Graphic Display - Plot Options
Limitations - Canadian
Drawing and Modification Features................ 176 Limitations - British
Copying Model Elements
Moving and Rotating Model Elements........... 189 Hot Rolled Steel - Design Results..................224 Scaling Elements
Merging Model Elements
General Reference Manual III Table of Contents EuroCode Code Check Results
Indian Code Check Results
Joint Coordinates Spreadsheet
Joint Information Dialog
Point Load Directions
Joints - Results
Joint Deflections Results
Joint Reaction Results
Distributed Loads Spreadsheet
Joints - Slaving Joints
Distributed Load Directions
Self Weight (Gravity Load)
Moving Loads Results
Loads - Basic Load Cases
Basic Load Case Spreadsheet
Copying Basic Load Cases
Deleting Basic Load Cases
Prestressing with Thermal Loads
Loads - Load Combinations
Load Combinations Spreadsheet
Load Combinations with RSA Results........... 245 Drawing Plate Surface Loads
Load Combinations with Moving Loads......... 246 Drawing Wall Panel Surface Loads................278 Nesting Load Combinations
Transient Load Combinations
P-Delta Load Combinations
Timber Design Load Duration Factor............. 248 Load Generation - Notional Loads.................284 Footing Design Combinations
Generating Building Code Combinations....... 249 Notional Load Generation Dialog
Notional Load Results
Loads - Joint Load / Displacement................ 255 Drawing Joint Loads
Joint Load Spreadsheet
Seismic Load Results
Loads - Area Loads
Drawing Area Loads
Area Loads Spreadsheet
Area Load Direction
Before You Begin Welcome to the RISA-3D General Reference manual. Please read this topic prior to installing the program and pay particular attention to the License Agreement. If you agree to the terms of the license then read the Installation section and install the program. If you are a first time user of RISA-3D you should turn your attention to the User's Guide (a separate document) which is designed to get you up and running as fast as possible while still exposing you to the important features of the software.
The User's Guide is designed to be read in two ways. If you are already familiar with structural modeling in general you can skip the supporting text and read only the underlined action items to quickly move through the tutorial. If you want more thorough explanations of the modeling process you may read all or some of the supporting text as you see fit.
After you have gone through the User's Guide, use this General Reference for detailed information on any topic. The topics are arranged in alphabetical order and are thoroughly indexed.
Overview RISA-3D is a general-purpose 3-dimensional analysis and design program. This program has been developed to make the definition, solution and modification of 3D structural models as fast and easy as possible. Analysis, up to and including calculation of maximum deflections and stresses, may be done on structures constructed of any material or combination of materials. Complete steel and wood design are also included in the program.
RISA-3D has full graphical modeling capability. You can draw your model on the screen and also perform extensive graphical editing simultaneously in multiple views. To modify your model data directly, RISA-3D employs a powerful, proprietary spreadsheet. All this combined with flexible data generation algorithms makes modeling very easy. Graphic display of the model along with applied loads, boundary conditions and much more, is always available. The model can be rapidly edited, solved, viewed, modified, re-solved, etc. The truly interactive nature of RISA-3D is its primary strength.
RISA-3D is also able to perform elaborate error checking as you define the model, and offers context sensitive help every step of the way.
RISA-3D is an interactive program as opposed to a batch mode program. With a batch mode program, you would edit a text file in one program (typically called a pre-processor), and then solve it with another program, and then view the solution results in yet another program (typically called a post-processor). With RISA-3D, all model editing, model solution, and results browsing is accomplished through the same interface and with the same program. The interactive approach offers several unique advantages over batch mode which include; the ability to do real time error checking of your model data, the ability to do rapid model editing, solution, editing, and re-solution without jumping from one program to another, and the need for the user to learn only one program interface.
You may access the features in RISA-3D by using the menu system, or the toolbars. The best way to learn RISA-3D is to go through the User's Guide. The advantage to this is that you are exposed to the tools RISA-3D provides AND the ways that you can take advantage of them.
Hardware Requirements Minimum
• The amount of space needed by RISA-3D to solve a particular structural model depends on the size of the model.
RISA-3D has been written such that it will use as much RAM as is available. If this isn't enough, RISA-3D will start using HD space until enough memory is obtained to solve the problem. Of course, if RISA-3D is required to use HD space, the solution will be much slower. So, the more memory you have available, the better. In general, 500 Megabytes (MB) of RAM is a good amount to solve most problems. However, if you will be regularly solving large problems, more memory will save you a lot of time in the long run. See Solving Large Models for more information.
Program Limits 100,000 Joints 32,000 Members 100,000 Plates 100,000 Solids 5,000 Section Sets 500 Materials 1,000 Custom Wood Species 500 Diaphragms 1,000 Basic Load Cases 200,000 Loads 500 Moving Loads 5,000 Load Combinations 500 Mode Shapes Demonstration Version: While you can open and solve a larger model, the largest model that can be saved to disk with the demonstration version is limited to 40 Joints, 40 Members, 40 Plates and 4 wall panels.
License Agreement END-USER LICENSE AGREEMENT FOR RISA Technologies, LLC® SOFTWARE The RISA-3D software product (SOFTWARE PRODUCT) includes computer software, the associated media, any printed materials, and any electronic documentation. By installing, copying or otherwise using the SOFTWARE PRODUCT, you agree to be bound by the terms of this agreement. If you do not agree with the terms of this agreement RISA Technologies, LLC is unwilling to license the SOFTWARE PRODUCT to you. In such event you must delete any installations and destroy any copies of the SOFTWARE PRODUCT and return the SOFTWARE PRODUCT to RISA Technologies, LLC within 60 days of purchase for a full refund.
2 RISA-3D v10 Before You Begin Copyright 2012 by RISA Technologies, LLC. All rights reserved. The SOFTWARE PRODUCT is protected by United States copyright laws and various international treaties. All rights not specifically granted under this agreement are reserved by RISA TECHNOLOGIES.
1. SOFTWARE LICENSE. The SOFTWARE PRODUCT is licensed, not sold. All right, title and interest is and remains vested in RISA Technologies, LLC. You may not rent, lease, or lend the SOFTWARE PRODUCT. You are specifically granted a license to the use of this program on no more than one CPU at any given time. The Network Version of the SOFTWARE PRODUCT is licensed for simultaneous use on a certain maximum number of network stations that varies on a per license basis. As part of the license to use the SOFTWARE PRODUCT, the program user acknowledges the reading, understanding and acceptance of all terms of this agreement. The SOFTWARE PRODUCT may not be reviewed, compared or evaluated in any manner in any publication without expressed written consent of RISA Technologies, LLC. You may not disassemble, decompile, reverse engineer or modify in any way the SOFTWARE PRODUCT. If the SOFTWARE PRODUCT was purchased at a discounted price for educational purposes it may in no event be used for professional design purposes. The terms of this license agreement are binding in perpetuity.
2. DISCLAIMER. We intend that the information contained in the SOFTWARE PRODUCT be accurate and reliable, but it is entirely the responsibility of the program user to verify the accuracy and applicability of any results obtained from the SOFTWARE PRODUCT. The SOFTWARE PRODUCT is intended for use by professional engineers and architects who possess an understanding of structural mechanics. In no event will RISA Technologies, LLC or its officers be liable to anyone for any damages, including any lost profits, lost savings or lost data. In no event will RISA Technologies, LLC or its officers be liable for incidental, special, punitive or consequential damages or professional malpractice arising out of or in connection with the usage of the SOFTWARE PRODUCT, even if RISA Technologies, LLC or its officers have been advised of or should be aware of the possibility of such damages. RISA TECHNOLOGIES' entire liability shall be limited to the purchase price of the SOFTWARE PRODUCT.