Using STAAD Pro 2005 Tutorial - SDC Publications

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Using STAAD Pro 2005 Tutorial (With U.S. Design Codes)

Munir M. Hamad

SDC

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Schroff Development Corporation www.schroff.com

www.schroff-europe.com

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Copyrighted Material Copyrighted Module 3: Material Useful Functions to Complete the Geometry This Module contains          

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Translational Repeat Circular Repeat Mirror Rotate Move Insert Node Adding Beams (Connecting & Intersecting) Cut Section Renumber Miscellaneous Functions

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Module 3: Useful Functions to Complete the Geometry

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Introduction

 The five methods we discussed in Module 2 are used to create the basic geometry. However, cannot alone fulfill the creation of some complex requirements of structural engineer.  In this module, we will discuss essential functions, which will enable the user to complete any unusual requirements in building up the geometry.  User should select Node, Beam, or Plate before issuing any of the functions to be discussed herein.  When you combine Module 2 & Module 3, you will know all the geometry function exists in STAAD Pro.

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Translational Repeat

 With this function we can duplicate Nodes, Beams, Plates in the direction of X, Y, or Z.

 Select the desired Nodes, Beams, or Plates to be duplicated.  From Generate toolbar, select Translational Repeat, or from menus select Geometry/Translational Repeat, the following dialog box will appear:

Copyrighted Material  Specify the Global Direction; you have three choices X, Y, or Z.  Specify the No. of Steps excluding the geometry you draw.  Specify the Default Step Spacing in the default length unit. • The Step Spacing may be positive or negative value (that is if the duplication process to take place in the negative side of X, Y, or Z).

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You can change the individual step spacing from the table in the dialog box.

 Specify if you want to Renumber Bays, a new column will be added, so user can specify the starting number of Beam numbers STAAD Pro will start with, for each new frame will be added.  Specify if you want to Link Steps or not. Linking Steps is to link the duplicate frames generated by Beams parallel to the direction of copying. Accordingly specify if you want to make the Base (the nodes at the bottom) to be linked or unlinked (Open).

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Module 3: Useful Functions to Complete the Geometry

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Using Translational Repeat

Exercise 11

1. Start STAAD Pro, and create a new frame 4 meter in X-axis, and 3 meter in Y-axis.

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2. Save this file under the name Common.std (this file will be used for the other exercises of this module and the other modules). 3. Select all Beams.

4. Start the Translation Repeat, and specify the input data in a way to produce the structure as shown below (leave the Spacing to be 5m):

Copyrighted Material Copyrighted Material 5. Don’t save and close.

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Circular Repeat

 With this function, we can duplicate Nodes, Beams, and Plates in a semi-circular, or circular fashion around one of the major axes.  Select the desired Nodes, Beams, or Plates to be duplicated. From Generate toolbar, select Circular Repeat, or from menus select Geometry/Circular Repeat, the following dialog box will appear:

Copyrighted Material  Specify the Axis of Rotation, which will be one of the three major axes X, Y, or Z.  Specify the Total Angle (+ve=CCW) to be covered by the duplicate frames. Then specify the No. of Steps excluding the geometry you draw.  To specify the point that the Axis of Rotation will go Through, you have three ways: • Click on the icon, and specify it on the screen.

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You remember the Node Number, type it in.



You don’t know the Node Number but you know its coordinate, type it in.

 Specify to Link Steps, or not, and to Open Base, or not.

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Using Circular Repeat

Exercise 12

1. Open Common.std. 2. Select all Beams.

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3. Start the Circular Repeat, and specify the input data in a way to produce the structure below (this is a top view):

Copyrighted Material 4. Don’t save and close.

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Mirror

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 With Mirror function, we can create a mirror image of the selected Nodes, Beams, and Plates around any of the three planes.  Select the desired Nodes, Beams, or Plates to be duplicated. From Generate toolbar, select Generate-Mirror, or from menus select Geometry/Mirror, the following dialog box will appear:

Copyrighted Material  Specify the Mirror Plane one of the following X-Y, X-Z, or Y-Z.  To specify the Plane Position, you have three ways:

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Click on the icon, and specify it on the screen.



If you remember the Node Number, type it in.



If you don’t know the Node Number but you know it’s X coordinate, type it in.

 Specify Generate Mode whether: • Copy mode will generate the mirror image and keep the original geometry. •

Move mode will generate the mirror image and erase the original geometry.

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Using Mirror

Exercise 13

1. Open Common.std.

Copyrighted Material 2. Select all Beams.

3. Start the Generate-Mirror, and specify the input data in a way to produce the structure below.

Copyrighted Material 4. Don’t save and close.

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Rotate

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 With Rotate function, we will be able to rotate Nodes, Beams, and Plates around any axis we specify.

 Select the desired Nodes, Beams, or Plates to be rotated. From Generate toolbar, select Generate-Rotate, or from menus select Geometry/Rotate, the following dialog box will appear:

Copyrighted Material  Specify the rotation Angle in degrees.  To specify the Axis Passes Through point you have three ways to do that: • Click on the icon, and specify Node 1, and Node 2 on the screen.

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If you remember the Node Number, type it in.



If you don’t know the two Nodes Number but you know their coordinates, type it in.

 Specify Generate Mode whether: • Copy mode will generate the rotated geometry and keep the original geometry. Specify to Link Bays or not. •

Move mode will generate the rotated geometry and erase the original geometry.

Note  Positive rotation angle will rotate Counter Clock Wise.

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Using Rotate

Exercise 14

1. Open Common.std.

Copyrighted Material 2. Select all Beams.

3. Start the Generate-Rotate, and specify the input data in a way to produce the structure below. (Hint: Use Rotate with angle =+40).

Copyrighted Material 4. Don’t save and close.

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Move

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 In Module 2, we found that STAAD Pro geometry is the Nodes. Beams, and Plates are defined based on the Nodes at their ends or corners, hence when you move Nodes, as if you are moving Beams, or Plates, or stretching them (stretch here means the two movement; elongating or shortning)  Select the desired Nodes (you can select Beams, or Plates, but move will move their Nodes).  You have three ways to access the function: • Press F2.

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Right-click and select Move.



From the menus select Geometry/Move, then one of the options.

 The following dialog box will appear:

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 Input the movement disctance and which direction.  Depends on your selection the output will be either moving or stretching.

Insert Node

 Node in STAAD Pro is stiffed joint, hence there will be 6 reactions on it. That means, if user inserted a Node, at the middle of a Beam, the stability of the structure will not be affecetd.  Select one Beam.  You have three ways to access the function:

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Start the Insert Node function by clicking on the function from the Geometry toolbar



Select Geometry/Insert Node, or Geometry/Split Beam!



Right-click and select Insert Node.

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Copyrighted Material  The following dialog box will appear:

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Add Mid Point  If you click this button, a new Node at the middle of the Beam will be added. Add n Points  In the field of n specify the number of Nodes to be added, then click Add n Points. Add New Point  In the field of Distance specify the location from the start of the Beam, and click Add New Point. STAAD Pro will produce in the field of Proportion; the percentage of the diatnace to the whole length of the Beam.  Alternatively, you can input the Proportion, and the Distance will be measured. Note  If you select more than one Beam and initite the function, the following dialog box will appear:

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 This dialog box will give you the ability to perform this function on multi-beams in one single command.

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Add Beam between Mid-Points

 To add Beams from the middle of one Beam to the middle of another Beam.

 From the Geometry toolbar, click the Add Beam between MidPoints.  The mouse shape will change to this shape.  Click the first Beam (click anywhere in the Beam), a new Node at the middle will be added.  Go the second Beam, and click anywhere on the Beam.  A new Beam will be added fom the middle of the first Beam to the middle of the seocnd Beam.

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Add Beam by Perpendicular Intersection

 The same as the previous function except this function will link an existing Node in a perpendicular fashion to an existing Beam.  From the Geometry toolbar, click the Add Beam by Perpendicular Intersection.  Click on an existing Node.  Click on any Beam.  A new Beam will be added perpendicular on the selected Beam.

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Using Tools to add Nodes and Beams

Exercise 15

1. Open Common.std.

Copyrighted Material 2. Select the 4 m Beam.

3. Using Insert Node, and Move try to do the geometry below:

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4. Do the following steps to produce the below geometry from the geometry you just created: a. Add Beams

b. Add Beam between Mid-Points

c. Add Beam by Perpendicular Intersection

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Connect Beams along an Axis

 You can connect Nodes along any of the major axes with Beams.  Select the desired Nodes to be connected along X, Y, or Z.  From the menus select Geometry/Connect Beams along, then choose one of the three axes. The Nodes will be connected with Beams.

Intersect Selected Members

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 Sometimes, it happens that two Beams intersect each other without creating a Node at the interesction point. This may happen specially in DXF files importing. This will lead STAAD Pro to interpret that there will be no transmitting of the forces between these two Beams, therefore we need to make a check for such a case, and correct it.  From the menus select Geometry/Intersect Selected Members, then you can select Intersect, or Highlight. • Highlight will only highlight any occurance of such a problem. •

Intersect will solve the problem.

 A dialog box will appear asking you to specify the tolerance. Specify the tolerance value, click OK.

Copyrighted Material  If such a problem is not present in your geometry, STAAD Pro will produce the following message:

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 If such a problem is present in your geometry, STAAD Pro will create Nodes at intersection as needed, and produce the following message:

Note  If you don’t want to use Highlight function, select the beams you suspect have this problem, then issue the command Intersect.

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Connecting Nodes, and Creating Intersections

Exercise 16

1. Open Common.std. 2. Select all Beams, and start Translational Repeat. The Global Direction is Z, Default Step Spacing is 3m, and No. of Steps is 3, (Don’t Link Steps), Click OK.

Copyrighted Material 3. The shape should look like the following:

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4. Change to the Node cursor, and select the Nodes at the upper-right, like the following:

Copyrighted Material 5. From Menus select Geometry/Connect Beams Along/Z Axis. The shape should be like the following:

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6. Select the first Node and the last Node, on the upper-left side:

Copyrighted Material 7. From Menus select Geometry/Connect Beams Along/Z Axis. A single Beam will be added connecting the first Node and the last Node. 8. Change to the Beam cursor. 9. Select the whole geometry (Ctrl+A).

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10. From menus select Geometry/Intersect Selected Members /Intersect, and accept the default tolerance value.

11. A dialog box will tell you that “2 new Beams Created”.

12. Don’t save and close.

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Module 3: Useful Functions to Complete the Geometry

Cut Section

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 Dealing with 3D View of a geometry with all of the Beams and Plates shown may lead to confusion, and accordingly will slow the production of geomerty or other functions like inputting crosssections. Cut Section is the suitable function to create a slice of the geometry so user can focus on the job.  From Strcuture toolbar, select Cut Section, or from menus select Tools/Cut Section.

Copyrighted Material  You have three ways to create a slice of your geometry: • Range By Joint

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Range By Min/Max



Select to View

Range By Joints  Specify the Plane you want to slice parallel to it. You have three choices, X-Y, Y-Z, and X-Z.  Specify a Node number, so the slicing will take place at it. Range By Min/Max  Specify the Plane you want to slice parallel to it. You have three choices, X-Y, Y-Z, and X-Z.  Specify the Minimum distance, and the Maximum distance, any geometry parallel to the plane selected and with the range of the distance will be shown.

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Select to View  You have three choices in this slicing method:

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Window/Rubber Band; whereis the user to make a window (click left button and hold to make a rectangle) whatever in it will be shown. (Note that the Middle Point of the member is the important part to be included inside the Window, and any Node within the Window).



Select Nodes, Beams, or Plates, then choose View Highlight. If you selected Nodes, Nodes only will be shown, etc.

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Click on Select To View, and choose the part of geometry you want to see, you can select more than one choice.

 According to your choice, part of the structure will be shown. Show All  Whenever you are done working with your desired slice, simply select the function again, and click on Show All button, the whole structure will appear again.

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Renumber

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 Numbering Nodes, Beams, and Plates is the mission of STAAD Pro, but we can interfere in it and renumber whatever we want.  Select Nodes, Beams, or Plates.  From menus, select Geometry/Renumber, choose suitable option.

 Warning message will appear:

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 Read this message carefully, as it will remove any undoing from this file, hence it may be something you don’t want to do.

 If you click on No, nothing will happen. If you click Yes, a dialog box will appear:

Copyrighted Material  Specify Start numbering from, and whether it will in Ascending order, or Descending order, then specify the Sort Criteria.

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Cutting Section & Renumbering

Exercise 17

1. Open Common.std.

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2. Select all Beams, and start Translational Repeat. The Global Direction is Z, Default Step Spacing is 3m, And No. of Steps is 3, Link Steps, and Open Base. 3. Right-click and select Labels, and then click Node Numbers on. Identify one of the Nodes at the top (let it be Node # 2).

4. Start Cut Section, at the Range By Joint, select X-Z, With Node # 2. The shape of the Geometry should look something like this:

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5. Change the cursor to Node cursor, and select all Nodes. 6. Select Geometry/Renumber/Nodes.

7. Select to start numbering from 100, and in an Ascending order. Specify the Sort Criteria to be Joint No.

8. The geometry should look like the following:

Copyrighted Material Copyrighted Material 9. Select Cut Section again, and click Show All.

10. Don’t save and close.

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Delete

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 You can delete Nodes, Members, and Plates. Deleting Nodes  If you want to delete Nodes, any thing attached to them (namely; Beams ot Plates) will be deleted: • Select Nodes. •

Press Del Key at the keyboad.



A warning message will appear:

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If you click Yes, the operation will be done and the Nodes will be deleted. No, will stop the operation.

Deleting Beams and  Select the desired Beams, and Plates: Plates • If you select one Beam and press Delete, the Nodes at its end will remian intact (except if your geomerty is one Beam). •

If you select more than one Beam, STAAD Pro will give you a warning message:



Based on your answer, you can keep the Nodes, or remove them as well.

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 The same thing applies for Plates, except deleting a single Plate will lead to the warning message.

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Undo / Redo

 You have unlimited number of Undos, and Redos to perform in one session.  After you perform several functions, you want to undo one or two of them, from the File toolbar, click Undo, or select Edit/Undo, or you can press Ctrl+Z.  Also, you can undo group of actions, if you clicked on the pop-up list, you can click on a certain action, accordingly STAAD Pro will highlight anything between what we select and the point you are standing on it right now, then double-click or press Enter.

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 Redo is to undo the undone  From File toolbar, click Redo, or from menus select Edit/Redo, or press Ctrl+Y.  All Undo specifications apply to Redo.

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Zooming and Panning

 You can zoom and Pan using different methods in STAAD Pro. You will find all zoom commands and Pan command in View toolbar, and from menus in the View/Zoom or View/Pan.  Zoom Window, is to draw a window (rectangular shape by specifying two opposite corners) around the desired portion of the geometry to be magnified, by clicking the left button of mouse and holding until you specify the other corner of the window. Whatever inside this window will be magnified.  Zoom Factor, is to specify a magnifying factor (greater than 1) or shrinking factor (less than 1), the following dialog box will appear:

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Copyrighted Material  Zoom In, to get you closer to the geometry, step-by-step.

 Zoom Out, to get you farther from the geometry, step-by-step.  Zoom Extents (the menu option is All), after several zooms in and out, this options allows you to see the whole geometry filling the screen.  Zoom Dynamic, just like Zoom Window, except Zoom Dynamic will create a window conatining the new view, and you can scroll up and down, left and right, to view the other parts of the structure.  Zoom Previous, to get you back to last view.

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 Pan, a hand will appear, to allow the user to pan the geometry in all of the sides, click the left button and drag the geometry in any direction (it is more practical to use Pan with other zooms), to disabe it press Esc, or click the icon again.  Display Whole Structure, just like Zoom Extents. It works with Cut Section (discussed earlier) as Show All option.  Magnifying Glass, a glass will appear, click and hold, you will see a bigger picture of the part, once you start moving you will magnify other parts of your geometry. Using IntelliMouse  If you have IntelliMouse (the mouse with a wheel), you can use it to Zoom In, and Zoom Out. • If you move the wheel forward you are zooming in.

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If you move the wheel backward you are zooming out.

 Previous Selection, STAAD Pro remembers the last selection you made. To re-use the last selection, simply click this button, and STAAD Pro will select it for you.

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Module 3: Useful Functions to Complete the Geometry

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Dimensioning

 You can dimenstion your geometry to make it more meaningful for anybody will view your model.  There are two ways to put dimension in STAAD Pro: • Using Dimension function •

Using Node to Node Distance function

Dimension function  Dimesion function will put dimension over Beams only, stating the length of the Beam on the middle of it.  From Structure toolbar, click Dimension, or from menus select Tools/Dimension Beams. The following dialog box will appear:

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 While Display mode is on, select either to: • Dimension to View, to dimension all Beams at the current view.

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Dimension to Selected Beams, the selected Beams proir to the initiation of this function will be dimensioned.



Dimension to List, type in the numbers of Beams that you desire to dimension (leave spaces between Beam numbers).

 To remove the dimension from the geometry, select the Remove mode, and click Remove.  This function is manual, you will click on two Nodes and STAAD Node to Node Pro will put a dimension between these two Nodes. There is no need Distance function for a Beam to be between the two Nodes.  From the Structure toolbar, click the Node to Node Distance, or from menus select Tools/Display Node to Node Dimension.  In both ways, the mouse shape will change.

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 Click the first Node, then click the second Node, dimension will appear on the distance you clicked. Keep doing this, until you are done.

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 To remove this type of dimension, from Structure toolbar, click Remove Node to Node Distance, or from menus select Tools/Remove Node Dimension. The dimension will disappear.

Pointing to Nodes, Beams, and Plates

 Without issuing any command, if you point to Node, Beam, or Plate STAAD Pro will give you the number of the Node, Beam, or Plate.

Pointing to Node  Using the Node cursor, point to a Node, the cusor will provide the Node Number:

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Pointing to Beam  Using the Beam cursor, point to a Beam, the cursor will provide the Beam Number, and the Start and End Colors:

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 As we mentioned before, each Beam is defined by the two Nodes at its ends. Since STAAD Pro will number every thing in the geometry, we will never know how STAAD Pro wrote the definition of Beam in the input file except using the following: • Opening the input file, and verify. •

Go the the Beam table in the Geometry Page Control.



Using the color code.

 By default the green will be the Start, and blue is the End.  This particularly important when you want to use Loading system.

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 To change the colors of the Start and End: • Right-click, and select Labels, from Beams, there will be two colors labeled Start Color, and End Color. Click the desired color icon, and change the colors.

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 To permanently set the color code of the Beams, click Beam Ends on in the same dialog box.

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Pointing to Plate  Using the Plate cursor, point to a Plate, the cursor will provide the Plate Number.

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Global and Local Coordinate Systems

 There is a single Global Coordinate System in STAAD Pro, which we defined the Node coordinates using it.  The Global Coordinate System, appear at the lower left corner of the main window.  We use GX, GY, and GZ, to differntiate them from the Local Coordinate System X, Y, and Z.  For each Beam, there is a Local Coordinate System, as follows: • X, is always from Start to End along the member.

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Y, in the direction of Minor principle axis.



Z, in the direction of Major principle axis.

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 Beam results always produced using the Local Coordinate System, such as Fx (Axial Load), Fy (Shear), and Mz (Bending moment).

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Copyrighted Material  To view the Local Coordinate System of the Beam • Right-click, and select Labels. •

From Beams, click Beam Orientation ON

Copyrighted Material  You will see the X, and Y, and you can determine Z.

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 For each Plate there is Local Coordinate System, which will be as follows: • X, is from first Node to the second Node. •

Y, lies in the Plane defined by the third point orthogrphical to X.



Z, is derived from the Right-Hand-Rule (which defines the relationship between the three axes).

 To see the orientation of Plate Local Coordinates: • Right-click, and select Labels. •

From Plates, click Plate Orientation ON.

Copyrighted Material  You will see the X, Y, and Z of the Plate:

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Module Review

1. In the Mirror function which of the following statements is true: a. I can define a User-Defined Plane to Mirror around it. b. I can only Mirror around X-Z Plane. c. I can Mirror around any of the three main Planes.

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d. There is only Copy mode in Mirror. 2. In the Translational Repeat:

a. The distances between steps generated should be the same. b. I can repeat parallel to any of the three main axes. c. I can’t link steps. d. I can’t renumber step Beams.

3. Use ________________ command to cut a slice of your geometry.

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4. If you delete Nodes, the Beams, and Plates attached to them will be intact: a. True

b. False

5. There is one method to place dimension on your geometry: a. True

b. False 6. Some of the Zooms options are __________,__________,__________,_________

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Module Review Answers 1. c 2. b 3. Cut Section 4. b 5. b

6. Window, In, Out, Dynamic, Previous, etc.

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Using STAAD Pro 2005 Tutorial - SDC Publications

Using STAAD Pro 2005 Tutorial (With U.S. Design Codes) Munir M. Hamad SDC PUBLICATIONS Schroff Development Corporation www.schroff.com www.schrof...

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