etabs 02 create steel frame building
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Create New Model.
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Define Section PropertiesFrame Sections
Import New Properties
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Concrete RectangularSteel I-Beamselect W16x26 to W18x175
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Result: w16x26 to w18x175 will appear as followingOK
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PropertiesFrame SectionAdd New Frame PropertyAuto Selection List
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RENAME Property Name to AUTOLATBMSelect W16x26 to W18x175 add to Auto Select ListOK
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Go to DefineSection PropertiesFrame SectionsImport New PropertiesAuto Select List
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NOTE: by default, the Story4 is labelled as Master Story. Story1,2,3 is similar to Story4.
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1 0 0 0
2 0 0 0
3 0 0 0 90
4 0 0 0 90
Go to cursor modeCtrl + Click on column A2Select Column C7RESULT: notice that the bottom
left shows 4 frames selected.
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Repeat this process for B2, A3, C3 and C4. RESULT: 20 frames selected.
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Choose Frame object Major Direction is Y.Apply. RESULT: Notice the 5 columns (20frames) selected
rotated 90degrees. Reason: We have defined the orientation of the selected to major direction that is Y
direction.
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Assignclear display of assign
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Go to Set Display OptionsAdd a Tick at Extrude FramesTick at Apply to All WindowsApply
OK
CREATE BEAM
Quick Draw BeamsProperty = AUTOLATBM.
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Add Beam as followings:
NOTE: the beam are level due to the similar properties as we have set it that way.
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Use cursor mode, Select Beam C/2-3EditDelete.
CREATE SECONDARY BEAM
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SelectSelectIntersecting Line
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The selected Beam as followsEditDelete.
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DRAW FLOORING OBJECTS
Remove the Extrude Frame View Options.
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Rename property to Deck1
Make sure Snap to Grid Intersections & Points is active
Draw the slab needed. Click enter to finish it.
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This indicate the direction of the deck span.
Use cursor modedefineSection PropertiesDeck Sections.
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Modify/Show PropertyModify the slab depth to 3in.
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DrawAuto Draw Cladding
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Set Elevation ViewPlan A.
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You can right click to show below:
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Select plan view.
DefineLoad Patterns
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MODFIY LOAD: Select Live Load, change type to Reducible Live
Modfiy Load
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ADD LOAD:
1. Rename load name to SDead(super imposed dead load), Choose Type: Super DeadAdd New
load.
2.
Rename load name to Cladding, Choose Type: Super DeadAdd New load.
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3.
Rename load name to Eqy, Choose Type: Seismic, Auto Lateral Load: ASCE: 7-10Add New
Load --> Modify Lateral Load
Uncheck the followingOK
4.
Rename load name to Windx, Choose Type: Wind, Auto Lateral Load: ASCE: 7-10Add New
Load --> Modify Lateral LoadInclude Shell Objects, Wind speed = 100mphOKOK
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Off snap to grid button.
Select (with cursor) all the preliminary beam (boundary). Note that 1 beam = 4frames due to similar
stories design.
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3D-mode:
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Go back to Plan View
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CREATE WIND LOADCreate Wind Load @ Right Elevation
First, create the elevation view of the right side of the building so that the wind load can be apply
to it.
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Turn On Snap to Grid intersections and Points.
Select the following RIGHT elevation, Click on column D1, D2, B2, B3, C3, C4Enter
RESULT:
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Back to Plan View.
MAKE SURE: The wind load direction is on positive x-direction on the right elevation, negative x-
direction on the left elevation.
Click on 3D view, set view optionsObject AssignmentsCHECK local Axes.
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Positive side on right Elevation as above and Negative side on left elevation as below.
Uncheck the local axes and back to basic 3D view
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Select Elevation ViewA OK (note: A view here is the same as leftelevation)
SELECT the whole A panel. (notice the doted line)
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Wind Load Pattern Name: WindxCoefficient, Cp : -0.8 (so that the wind load is at the positive x-
direction acting on the A panel).CHECK Windward (varies).
Choose RIGHT Elevation View:
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AssignClear Display of Sign3D view.
Check Load applied:
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RUN ANALYSIS
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Right Click on the beamto bring out individual diagram.
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NOTE: Display locationShow Max OR Scroll for Values.
E.g Scroll for Values 6.5ft from the joint.
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Reset the display to Underformed shape -> 3D view
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Right Click on the Secondary Beam:
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Check for information of other tabs too:: Beam, Deflection, Vibration, Prices, Factors
FOR 3D view, go to display option, UNCHECK the object fill and all null shells.
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Verify Analysis and Design Section
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Select NO this time? Why?
Right click on 1 of the secondary beam, you will notice that last analysis and current design/next
analysis are not the same.
The accepted Sections List shows all the members that are adequate for the design.
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SelectSelectPropertiesFrame Sections
Select AUTOLATBMSelectClose
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DesignSteel Frame DesignLateral Bracing
Select User SpecifiedSpecify Point Bracing
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On the Plan View tabRight Click on the Beam as follow:
Note the design procedure is Steel Frame Design.
Go to 3D-view tab, DesignSteel Frame DesignStart Design/Check
Click NO::
DesignSteel Frame DesignDisplay Design Info
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Make sure the P-M Ratio is selected (both 3D view and Plan View Tab)
Right Click on the Beam:
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Again: note that the analysis section and design section are different.
here shows the auto generated code suitable steel sections that are adequate for design.
DesignSteel Frame DesignSelect Design Combinations:
Analyzerun Analysis
DesignSteel Frame DesignStart Design/Check
Again, if the analaysis and design still do not match, Click YES to rerun:
DesignSteel Frame DesignVerify Analysis vs Design sections
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