1. New Beam
Select Beam; in the Element List, click New, and there are three beam types: Rectangular Beam, Special-shaped Beam and Parameterized Beam.
For the creation of special-shaped beams and parameterized beams, refer to Column.
2. Define Beam
After creating beams, in the Attribute Editor of beam, you can modify the name and size first according to the drawing.
The rebar info of beam is different from that of other elements, because the rebar info may vary with the beam span. Besides the public rebar info in the Attribute Editor, beams also have info on rebar arrangement in the side label. See Side Label for details.
(1) Span Quantity: Span quantity, which can be read automatically from name or be input directly. If quantity of span is not input, it will be read automatically after span is re-picked.
(2) Links Adjustment: To add this value to the calculated number of links, where positive value means to add and negative value means minus.
(3) Span Info: To save span info of an element. View Edit span Info interface by clicking three-point button. Beam span info being filled out, which means that the beam is identified. Otherwise you will have to set the Side Label.
3. Draw Beam
After defining beam elements, you can start the drawing of beam entities.
Beam is also a linear element, so you can see Draw Wall for details.
Beams need to use columns as supports, so please make sure the columns are already drawn before drawing beams.
4. Beam Side Label
After drawing a beam, if it is shown in pink, it means there is no support or beam span, thus no quantity can be calculated or extracted. You can input rebar info for each span based on the drawing, and then the beam will turn green, i.e., the quantities can be calculated and extracted.
Click Drawing > Side Label, and then click a beam. According to the drawing, input rebar info of beam.
1. you can enter more information for bottom bar of beam, as shown below.
2. Besides inputting support bar, middle bar and bottom bar into the side label of beam, you can also directly input other rebar info into the beam schedule, as shown below.
For the supported input format, you can view the tips in the beam schedule.
5. Related Function
5.1 Merge Beam Element and Entity
When the names of beam spans are different, you may draw them as different beams. To calculate rebar continuously, you can merge the beams.
Select the beams you want to merge
Click Merge Beam Element and Entity, and the Confirm window appears. Select the check box as needed.
Click OK, and the message box stating “Merge succeeded!” appears. The two beams are merged into one.
5.2 Batch Identify Support, Re-pick Span, Set Beam Support, Delete Beam Support
To calculate beams correctly, TRB provides a series of functions to adjust beam span and support. You can use them as needed.
6. Calculate & View Quantity
After the modeling and rebar arrangement of beam, click Calculate to view the quantities of beams.
6.1 Edit Rebar & Rebar 3D
Select a beam, and click Edit Rebar (F11) and Rebar 3D (Ctrl+E). In this way, you can combine two ways to view quantities more clearly.
6.2 Rebar Layout
Besides the above mentioned ways of viewing quantities, you can also view the rebar layout of beam on the horizontal plane.
Select a beam, click Rebar Layout, or press Ctrl+R, to enter the layout view, as shown below.