Creating a New Member Between Two Existing Members
This simple but important feature is well documented in the help system. We mention it here just to ensure that you don't overlook it.
 | Help: For further information see:
|
Generating Arrays of Equally Spaced Floor Joists
now includes facilities to allow you to create a series of infill joists quickly and easily. In many cases you will be able to generate such joists across the entire width of a building if you need to.
If you want to work through this example with us load the model
Floor Joists Stage 1.TEL.
 | Note: The standard bay centers are 6 m in the X-direction and 4 m
in the Y -direction.
|
We shall add joists across this building using various options.
To make the example as easy to follow as possible we shall work in 2D mode and use a plane which only contains the floor (at an elevation of 3 m).
1. Click the icon (
) on the toolbar, make the following settings, click .
2. Now we can zoom to the full extent of the structure.
3. Now to create the joists. Click the and then proceed as explained below.
4. You will see the dialog. Make the settings shown below and then click .
5. This creates the joist layout below.
| Note: The joist layout includes the existing beams.
recognizes this automatically and retains the existing
members, rather than creating new ones. Also, because of
the settings we made, does not create members in
the bay where there is no beam in the 'Source beam' position.
|
6. We will now create a new series of joists which span parallel to the two nodes indicated above. If you switch on the display of the joint numbers, you will see that these are joints 20 and 41, we shall leave these off here since they clutter the display. Now click and drag as shown below.
7. You will see the dialog. Make the settings shown below and then click .
8. You will see that this time the new joists are parallel to the line through the two nodes that we specified.
9. Now to create the remaining floor joists, click and drag as shown below.
10. You will see the dialog. Make the settings shown below and then click .
11. You will see the layout of joists as shown below.
But this is not the layout that we expected at all! so what's gone wrong. Well we told to create 13 joists over a length of 24 m. However has not been able to create the joists over the full 24 m since what would be the
Target member in the last bay is not in line with the initial
Target member we selected. has recognized this, and has created 13 joists over the reduced length, furthermore it has recognized the presence of the existing nodes in the
Source members and has tied the new joists in to these.
12. Click twice, to completely clear the generation of this incorrect layout. Now click and drag again as shown below, note the change in direction.
13. Complete the dialog as shown below and then click
14. This layout of floor joists is more what we might expect, has created the joists as required, but has still not created the joists in the final (skew) bay.
15. So let's create an arrangement in this bay. We don't have to choose two beams along opposite sides of the bay, we can choose any two beams. So click as shown below.
16. Complete the dialog as shown below and then click
17. Now we get the arrangement of joists shown below.
18. If you want you can continue and define joists in the shaded area above.
| Help: For further more detailed information on defining floor joists
see:
|
