Learning SAP2000: Truss Example

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The following truss is to be drawn

Efficient Modelling by drawing using various tools.

By drawing this truss we will learn how to select and deselect members efficiently.

Put members in suitable groups for analysis and design.clip_image002

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Switch to xz plane

Making one member repeatedly in case there are many members.

Make vertical

Three types of replication

Linear, mirror, rotate

Faster to make basic block and replicate.

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Ctrl a > Ctrl r(or edit-> replicate)

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Linear tab
dx=8
Increment Data Number=2
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select member->edit->edit lines->divide frames

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Number of frames=6

Last/first ratio=1 (because all memebers are equal)

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To copy to parallel grid in y direction

Select all->

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Placing girders

Goto xy plane

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Grouping of similar members

Assigning groups

BC(Bottom Cord) I-section (light or medium)

TC(Top Cord) I-section (light or medium)

Girder(Top) I(H)

Diagonals Channel Section

Verticals Channel Section

Runner/Horizontal/Brace

1. Select the Members (selection can be done from select tab for efficiency)
Selecting Members using Orientation
i. Select->select line parallel to-> click
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2. Assign-> Assign to groupclip_image032

3. Add new groupclip_image034

4. Check all->OK

5. Click Add to Group radio button->OK

6. To select again Select->Group->Verticals

Selecting diagonals

1. Select the shown componentsclip_image036

2. Select->Deselect->Groups->Verticals

3. Assign->Assign to group->(similar to above) Name Diagonals

To select top cord members:

1. Select -> select line parallel to-> click straight line object and click horizontal cord

2. Select->Deselect->Coordinate Specification->Specified Co-ordinate range->Z-coordinates at a single value (set to 0)->OK

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