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STAAD.PRO V8IUPDATES IN

SELECTSERIES 3

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Jason T. Coleman, P.E.Senior Technical Writer

Bentley Systems, Incorporated

www.bentley.com


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Sustaining Infrastructure 2

INTRODUCTION

This video is an overview of some of the featuresincluded in the latest version of STAAD.Pro V8i,which was released this month. V8i SELECTseries 3

is release 20.07.08.

NEW FEATURES

This release comes with dozens of new features andimprovements for analysis, design, and post-processing.

For the general program operation, this versionincludes ISM integration, export to SACS (Bentleysoffshore analysis and design suite), and additional

European and Japanese steel section catalogs.

For modeling operations, this version includes windload generation per ASCE 7-10, a load combinationgeneration tool for Eurocode, a single mass modelload type, and rigid floor diaphragms.

The analysis and design engine is updated to includenew versions of the American Petroleum Institute RPand Indian Standard 800. Several newenhancements to the Eurocode 3 design have been

added, including: shear buckling, Singaporean andBelgian national annexes, slender circular hollowsections, and user defined sections.

Post processing modules updated in this versioninclude the design of slabs per Eurocode 2 in theReinforced Concrete Design module and a freelicense to STAAD.foundation for the design of rigidfoundation elements.

Lets take a closer look at using a few of thesefeatures.

ISM INTEGRATION

STAAD.Pro is now ISM Enabled. BentleysIntegrated Structural Modeling technology is used for

exchanging structural model data between variousapplications as well as controlling any changes made


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to a central repository of data. STAAD.Pro canexchange data with an ISM repository using the

included StrucLink utility.

This allows integration with a wide variety of Bentley

programs as well as third-party program such asAutodesk Revit and Tekla Structures.

Lets take a look an example how to create arepository from a STAAD model as well as how toupdate the STAAD model to reflect any changes

made to the repository.

Ill begin by opening an example model in

STAAD.Pro that ships with the product. From the Filemenu, Ill select ISM> Create Repository. TheStrucLink utility opens and prompts me to provide a

name for the repository. This facility is used toconstruct a physical model from the analyticalSTAAD model.

After providing a name for the ISM Repository, youcan manage material and shape databasesassociated with the StrucLink utility. Typically, thedefault libraries are sufficient. However, if you haveany user shapes or custom catalogs, you will need toprovide additional data.

Once the project is configured, click the start buttonto initiate the export. Messages pertaining to theoutput progress are displayed in the window below.Once this process is complete, a pop-up messageconfirms a successful creation of the repository. Youcan review any export errors and messages inStrucLink. Once you are finished, you can close theStrucLink utility.

The repository can be viewed using StructuralSynchronizer on your. Other ISM Enabled programs

can now read and update the same repository. Toview the model on your iPhone or iPad, export the

model to a Mobile ISM Repository, which can beviewed using Structural Synchronizer View on youriOS device.

STAAD.Pro V8imodel exported to

ISM repository


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ASCE 7-10 WIND LOADS

STAAD.Pro can now automatically generate windloads per the 2010 edition of ASCE 7 MinimumDesign Loads for Buildings and Other Structures, in

addition to the previously incorporated 95 and 2000editions of the same specification.

Lets take a look at how to generate these loads on astructure.

Ill open an example that ships with the program andselect the General | Load & Definitiontab. In theLoad Case Details section, I can see that a wind loaddefinition and load case has already been added inthe global X direction. Ill add another per the ASCE

7-10 specification in the Z direction. In order tocalculate the wind intensity, Ill need to know theprojection dimensions of my structure, so Ill use theNode-to-Node Dimensiontool to display these in

the View window.

Ill first add a new Wind definition entry to thedefinitions in my input file. I can select this newdefinition and the add intensity and exposure data forthis definition. On the Add New: Wind Definition

dialog box Intensity tab, click the Calculate as perASCE-7 to enter to define an intensity curveparametrically per this speciation. Select the version

of the specification to usein this case ASCE 7-2010and then specify the general wind parametersfor the site and select the structure type. Click Applyand then select the Main Building Data tab where Illspecify information describing my building structure.Note that this tab varies depending on the structuretype selected, allowing you to define wind intensitycurves for the variety of structures covered in ASCE7. Select the Building Design Pressure tab and selectthe wall on which this wind is applied. The calculatedpressure coefficients are displayed but you canoverride any of these values as needed. The

intensity curve and table of values is displayed. ClickOK. This height versus intensity data is nowpopulated as calculated per ASCE 7-10. Click Add

and then close the dialog box.

Parametricallydefine wind loads

er ASCE 7-10


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Of course, this is just a wind definition and I still needto specify where and how this is applied to the

structure. Ill add a new load case to my structurewith the type Wind. In this load case, Ill add a windload based on the definition I just created. Ill select

to apply this to the Z Windward side of the buildingstructure. You can click and hold the LoadingConvention >>button to display the nomenclatureused. It is important that this match the parametersspecified for the selected definition or your loads willnot be appropriate.

This procedure can be repeated for each direction,windward and leeward sides.

EUROCODE LOAD COMINTATIONS

Load combinations can always be cumbersome togenerate for even relatively small, simple structures.Those specified in Eurocode Basis of structuraldesigncan be especially challenging to generate as

this requires that favorable and unfavorableconditions be accounted.

Lets take a look at how to use the new EurocodeLoad Combination Generator tool to create theseload cases automatically using some simple input.

Ill open an example that ships with the program and

select the General | Load & Definitions tab. In theLoad Case Details section, I can see that one LoadCombination was included but well generate manymore using the utility.

It is important that each load case have a typedefined as this is used by the utility to evaluate thecategory of load application (permanent, variable, orpre-stress). I quickly assign dead load, roof live load,and wind load types to each of my existing load

cases.

Now, Im going to select the User Tools > EurocodeLoad Combination Generator. The dialog boxopens. I can specify which of three generalcombination equations I want to use. Equation 6.10is the default but the least favorable of 6.10a or b

Automaticallygenerate load

combinations perEurocode


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may be used for strength limit state designs. Theload combination generator can be ran multiple times

for the same model, but be sure to change the initialload case number in this case or if you already haveload cases or combinations with numbers 1,000 or

higher.

Next, I can specify load factors for use in the generalequations. These are explained in detail in theprogram help or you can reference the specification.For the psi factor, we have included a list of commonvalues you can select.

The Categories button opens a dialog box used tospecify the load category for each load type availablein STAAD. Some of the typical ones are specified bydefault and you can specify any load type as needed.Since STAAD.Pro does not have a load type for pre-stress, we recommend just using an un-used loadtype such as Imperfection for these loads if yourstructure has them.

Once all of the load types in you model are assignedcategories and you have specified all the loadfactors, click Generate Combinations to create theload combinations in your STAAD file. A message

indicates how many combinations were generated. Ifyou dont need to generate any more combinations

for other equations, then click Cancel to return toyour model.

If the Load & Definition dialog doesnt update

automatically, simply close and re-open the dialog torefresh. Each load combination is clearly labeled forby the specification and equation selected.

SUMMARY

This has been a short overview of just a few of the

new features included in STAAD.Pro V8i(SELECTseries 3). Please refer to the release notes

included with the product or the Whats New sectionof the help file for more in-depth information on usingthese and all the powerful features included inSTAAD.Pro.


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Documents

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