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Mesh Bars for Rebar set / Mesh Bars by area for Rebar set

Last updated May 28, 2019 by Vlastimil Cadra Vlastimil.Cadra@construsoft.cz

Software version: 
Not version-specific
Environment: 
Not environment-specific

Mesh Bars for Rebar set / Mesh Bars by area for Rebar set

Meshreinforcement that represents a mesh of steel bars in two perpendicular directions

In Tekla Structures, the reinforcement mesh bars in one direction are called main bars and reinforcement mesh bars perpendicular to them are called crossing bars.

Bars for Rebar set and Mesh bars by area for Rebar set create reinforcement for concrete slabs or walls.

Installing Mesh Bars for Rebar set / Mesh Bars by area for Rebar set

To install the extension:

  1. Download from Tekla Warehouseservice for collaboration and for storing and sharing Tekla Structures content

    In Tekla Warehouse the content items are stored in collections. Tekla Warehouse includes the Tekla Warehouse Service and the Tekla Warehouse web site.

    Tekla Warehouse is one of the Tekla online services.

  2. Run downloaded .tsep file
  3. Run Tekla Structures

Objects created

  • Primary bars as Rebar set
  • Crossing bars as Rebar set

Use for

Situation Description


Reinforcement for the bottom or the top surface of the concrete element, or for both.

Selection order

Component To create mesh bars
Mesh Bars for Rebar set
  1. Select a concrete slab.

The reinforcement is created automatically.

Mesh bars by area for Rebar set
  1. Select a concrete slab.
  2. Select a group of points to define a working polygon.

The reinforcement is created automatically.

Picture tab

Use the Picture tab to define how the top and bottom bars are created.

Option Description
Create bars Top bars with primary bars above secondary bars
Top bars with secondary bars above primary bars
No bars
The same options are available for the bottom bars as well.
The value defined in the box is the cover thickness for the top/bottom layer.
If you only want to create bars in the middle of the slab, select the No bars option either for the top or bottom bars, and then select Yes in the Place central list that appears.
Mesh area perimeter This option is only available for Mesh bars by area for Rebar set.
Select the outline that the mesh follows.
The meshes in the examples are created by picking the same points but with different mesh area perimeters.
Part
Part, for example:
Polygon
Polygon, for example:
Polygon + part
Part + polygon, for example:
Same as bottom Select whether the top bars are created using the same properties as the bottom bars.
If you select No , enter the top bar properties.
Size

Select the diameter of a bar.
You can set the size separately for the top primary and secondary bars, and for the bottom primary and secondary bars.

Grade

Define the strength of the steel used in the bars.

You can set the grade separately for the top primary and secondary bars, and for the bottom primary and secondary bars.

Spacing type

Select whether the spacing is based on the number of bars or the spacing value.

  • By spacings : enter the distance between the bars in the Spacing box.
  • Number of bars : enter the number of bars in the Number of bars box.
Spacing

Distance between the bars.

Tekla Structures calculates the number of bars.

You can set the spacing separately for the top primary and secondary bars, and for the bottom primary and secondary bars.

Number of bars

Number of bars.

Tekla Structures calculates the distance between bars.

You can set the number of bars separately for the top primary and secondary bars, and for the bottom primary and secondary bars.

Primary bars direction

The direction of the primary bars. Use to change bar direction.

If the Auto option is selected, the primary bars are created along the two longest parallel sides of a slab. If there are no parallel sides, then the bars are created along the slab x direction instead.

Up direction

Select which sides are regarded as the top and bottom sides of the slab.

If the Auto option is selected, then the bars are created on the side with the greatest area.

Detailing tab

Use the Detailing tab to control how the bars are distributed.

Option Description
Bar distances

Select how the distance between the bars is measured.

  • From center of bar
  • From edge of bar
Step tappering Rebar set is created normally
Creates as many bars as possible with same length at the tapered edge.

The value you enter is the maximum allowed shortening of a bar.

Bar behavior at cuts

Select how bars next to openings are handled.

  • Cut bars: Select whether the bars are cut and which cuts are ignored. In bar groups, you can ignore cuts by part name, part class, or selection filter. The Selection filter list only shows the selection filters that include the object type 11 (polygon cut).
  • Ignore openings smaller than: The minimum length of a cut (in the direction of the bars) that will cut the bars. Lower values are ignored. This setting only affects bars that are created as bar groups. Bars that are created as a mesh are always cut by the cuts in the concrete part.
  • Cover thickness in holes: Distance between the bar end/start point to the edge of the opening.
  • Create cuts around selected parts: Select whether the bars are cut by the parts that clash with the reinforced part. The cutting parts are defined by a selection filter.

Bar end conditions tab

Use the Bar end conditions tab to control the cover thickness and bar hooks.

Option Description
Use bar end conditions around holes Select whether the same bar end conditions are used around the openings as at part edges.
End conditions Creates a straight bar without a hook at the given end of a bar.
Creates a 90° hook at a given end of bar.
Creates a 135° hook at a given end of bar.
Creates a 180° hook at a given end of bar.
Creates a hook with a free angle at the given end of a bar.
Bending radius Bending radius at bar ends
Bending length Bending length at bar ends

Splicing tab

Use the Splicing tab to control the splicing of the reinforcing bars.

Option Description
Splice bars

Select whether the reinforcing bars are spliced or not.

Manufacturer

Select the manufacturer of the reinforcement.
The maximum bar lengths and lap lengths are then listed by the grade and size of the bar.
If needed, you can modify these splicing definitions in the MeshBarsSplicing_Manufacturers.dat file. You can also copy the default file from ..\ProgramData\Trimble\Tekla Structures\<version>\environments\common\system , edit it, and save it to your project or firm folder.

Maximum length of bars Maximum reinforcing bar length after which the bars are spliced.
Lapping length Length of the lapping connection.
Splicing in same cross section Select how many reinforcing bars can be spliced in the same location.
  • 1/1 = all reinforcing bars are spliced in the same cross section.
  • 1/2 = every second reinforcing bar is spliced in the same cross section.
  • 1/3 = every third reinforcing bar is spliced in the same cross section.
  • 1/4 = every fourth reinforcing bar is spliced in the same cross section.
Splicing symmetry Select the symmetry that is applied when the reinforcing bars are spliced.
  • Not Symmetrical: The splice pattern of the reinforcing bar is not symmetrical and the uneven length is only at one side.
  • Symmetrical with different lengths at sides: The splice pattern of the reinforcing bar is symmetrical with uneven lengths at the sides.
  • Symmetrical with different length at center: The splice pattern of the reinforcing bar is symmetrical with uneven length in the center.
Splicing offset Offset of the splice center point from the point where the reinforcing bars originally met.
Minimum splitting distance Minimum longitudinal distance between two splices in consecutive bars.
Bar position Select whether the lapping bars are on top of each other or parallel to each other.

Attributes tab

Use the Attributes tab to control the bar group or mesh properties.

Option Description
Name Name of the bar group or mesh.
Prefix Prefix for the position number of the bar group or mesh.
Start number Start number for the position number of the bar group or mesh.
Class Class of the bar group or mesh.
If you create a mesh, only the class of primary bars is taken into account.

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Comments

by Andy Webb

When is this tool going to be available?