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1. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
T.RANGARAJAN, STRUCTURAL ENGINEER STAADPRO Page 1
ELEVATED INTZ TANK
MODELING , LOADINGS , ANALYSIS AND DESIGN OF ELEVATED INTZ TANK
Modeling:
1. Space-file name : RC NTZ TANK
2. Unit-Met, Kn
3. Add beam
4. Finish
5. View from +Z –X_Y Plane .Snap Node/Beam
6. Use Circular Repeat tool.

2. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Snap Node/Beam

3. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Insert node- vertical side into 2 and to Slope by 3.
Use circular repeat tool to model the tank.
p

4. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Select all beams and choose Create Infill Plate to Infill plate tool and fill with
PLATE ELEMENTS. (Plate member)
Structure Diagrams… and click to Fill Plates
Ctrl+Z ….Undo ….. Circular Repeat

5. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Circular Repeat
Create Infill Plate Label tool….
Structure Diagrams… Fill Plates
Select Beam Cursor and select beams and click fill plates to view the plates.
General menu- property- 200 mm for plate and provide Fixed Support to the
bottom 2 nodes as shown.

6. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Load case 1 : Water Pressure-General - Add.. Plate Loads | Hydrostatic - Select
Plate(s).

7. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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W1 = -20Kn/m2 and W2 = 0 Kn/m2.
Select Hydrostatic and enter ,W1 = -40 Kn/m2 and W2 = -20 Kn/m2
W1 = -50 Kn/m2 and W2 = -4 0Kn/m2

8. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Select Plate Cursor and select the plates . Use Circular Repeat as shown.

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Local Z --- Ctrl+Z ……. Circular Repeat …
Command-
Analysis/Print .. Print Option .No Print
Choose Analyze | Run Analysis…
Choose Post-processing - Plate | Contour …choose Max Absolute
View From +Y … Plate Cursor

10. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Use Cut Section … Select to View ......... View Highlighted Only
View From +Z … Plate Cursor

11. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Cut Section … Select to View | View Highlighted Only
Cut Section … Show All Surface Element and Plate Element
Modeling …. View From +Z
Cut Section …Select to View | View Highlighted Only
View From +Y…… ……..

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Define Mesh Region ……. Div. = 1

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Support …………. Fixed Support
General | Property ……. Thickness… Plate/Surface Thickness …0.3 m,
Material = Concrete … Add … Close
Assign To View …. Assign
Load case 2 : PLATE LOAD … Add.. .Selfweight

14. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Add.. Plate Loads | Pressure on Full Plate …Add … Close …Assign To View
Analyze | Run Analysis… Run Analysis
Post-processing case2 : PLATE LOAD
Plate | Contour

15. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Modeling :
1 … (X=2, Y=20, Z=0) (X=0, Y=0, Z=0) …. (Circular Repeat)
Modeling …. Geometry | Beam
View From +Z …… Snap Node/Beam

16. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Snap Node/Beam
Snap Node/Beam …. (X=2, Y=20) … (X=0, Y=0)
Property … Define… Rectangle : YD = 1.0 m, ZD = 0.5 m, Material = Concrete
Insert Node

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Circular Repeat
3D Rendering

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Link beam property …. YD = 0.4 m, ZD = 0.4 m …Beam

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20. STAADPRO ELEVATED INTZ TANK MODELING AND DESIGNING
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Support …. Edit List
Load case 3 : Design Load …… Repeat Load … L2 : PLATE LOAD … 1.4
Commands | Loading | Load List… L3 : DESIGN LOAD
Design | Concrete … Define Parameters…
FC : Compressive strength of concrete = 25 N/m2
• FYMAIN : Yield strength of steel = 415 N/m2
• MAXMAIN : Max. main reinforcement bar = 25
• TRACK = (2)

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View From +Z
Commands… DESIGN COLUMN
Analyze | Run Analysis…

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