bit3112 staadpro analysisdesign slab rc structure
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Analysis and Design of Reinforced Concrete Structure
Creating member
Start the Staad Pro. Choose Space, set the unit to kN and meter. ClickNext.Choose Open
Structure Wizardand click Finish.
Tick to Prototype model, choose Frame ModelsasModel Type, double click onBay Frameand
fill in the blank as shown below. Length 6m (19.685 ft), Height 3m(9.843 ft), and Width
6m(19.685 ft). Some of the features in StaadPro are not following the units setup by user. Then
user needs to convert the values. For example, meter to foot. Then click Apply.
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Next, click File,Merge Model with StaadPro model, click Yes (transfer/merge the model.) ,
click OK to the Paste Prototype Model window (X,Y,Z = 0, 0, 0).
Now the structure is displayed on the screen.
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Click Geometry menu (top), select Run Structure Wizard, click Prototype Models, choose
Surface/Plate Models and double click on Quad Plate.
Fill in the blank as shown below. For Corners, X-B = 6m, X-C=6m, Z-C=6m and Z-D= 6m.
Since the unit is in ft, then user has to convert the unit to ft. For Bias and Division, just put the
number without convert, as shown below. Click Apply.
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Next, click File,Merge Model with StaadPro model, and click Yes (transfer/merge the
model.) , next for the Paste Prototype Modelwindow, set Yto 1.5 meter. Click OK.
Properties
Click General, Property(left side). ClickDefine (right side-properties window), choose Circle
and insert 0.35 meter for YD. Click Add and Close.
Highlight the circle properties, select all columns and clickAssign.Click Yes.
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Again, clickDefineand selectRectangle.Insert 0.4 meter for YD and 0.25 meter for ZD. Add
and Close.
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Highlight the rectangle properties, and assign to all beam members. Other method, you can
highlight the properties, then click Select (top-menu), selectBeams parallel to X, then repeat
again to selectBeam Parallel to Z. Click Assign and Yes.
Next, click to Thickness and insert 0.175 meters for all the nodes. Click Add and Close.
Next, to assign the thickness properties, highlight the thickness properties, use Plate Cursor,
select all slab andAssign, Yes.
Now all the properties (circle,rectangle and thickness) have been assigned to all the members as
shown below.
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Supports
CreateFixed support, and assign to all bases as shown in the figure.
To see the 3D diagram of structure, right-click mouse, select Structure Diagrams, and tick the
blank as shown.
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Loading
Create aDead Load, click Selfweight, click Y and -1 as factor. Click Add and Close.
Add new load underDead Loadcase. Click Floor Load, and fill in the blanks as follow. Click
Add. StaadPro will automatically assign the floor loads to the beams.
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You can adjust the load scales by clicking the right-mouse, Labels, Scales.
Next, add another new load underDead Loadcase. Click to Plate Loads, choose Pressure on
Full Plate and insert 10 kN/m2 for W1. Click Add and Close.
Select all plates using Plate Cursoricon, and assign the pressure loads.
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Next, we want to create new load case. ClickLoad Cases Details,Add, Primary, and name the
title asLive 1. Click Add and Close.
SelectLive 1,Add and select Floor Load, Floor. Fill in the blank as shown. Add and Close.
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UnderLoad Cases Details,create the third load cases and name asLive 2.Add and Close. Then,
selectLive 2, Addand select Floor Load, Floor.Fill in the blank as shown. Add and Close.
UnderLoad Cases Details, create the fourth load cases and name asAdditional Live.Add and
Close. Then, selectAdditional Live,Addand selectNodal Load, Node. Fill -150 kN on FY. Add
and Close.
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To assign the nodal load, click to theNode Cursoricon, click on the first floor level of the
column at the left of the structure. ClickAssign to Selected Entities,Assignand Yes.
Next, we want to create new load combination. ClickLoad Cases Details,Add , Define
Combinations,and name as ULS. SelectLive 1, Live 2andAdditional Liveby click to the load
name and click > . Insert 1.6 as load factor. Add and Close.
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Analysis
Run the analysis like previous exercise.Analysis/Print, Perform Analysis (No Print), Addand
Close. ClickAnalyzeandRun Analysis. You can see the result of displacement and moment
bending Z of the structure.
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Slab Design
Click to Post-Processingicon, Click toAdvanced Slab Design. Click to Slab Design(left side),
Results(top menu), select Slab Reinforcementand a dialogue box will appear.
Then, go toLoadingselect 5 ULS, then select Generaland fill in the blanks as shown.
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Click OK. Then you will see the plate contour is displayed.
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