i Beam Reinforcement

8/11/2019 i Beam Reinforcement

http://slidepdf.com/reader/full/i-beam-reinforcement 1/8

Copyright © Tekla Corporation September 2010

I-Beam Reinforcement plug-in

1. Purpose and description

This plug-in can be used to easily reinforce an I-Beam with bend meshes in top and bottomflange, stem meshes, u-bars in top flange and longitudinal bars along the beam. An exampleof a beam can be seen below.

2. System requirements

Tekla Structures version(s): 17.0

.NET Framework version: 4.0

Environments: All

Languages: English

Industry segment: Precast, Cast in place

3. Usage

3.1. Preconditions

Create an I-Beam

3.2. Steps

To use the extension:

1. Open the Component Catalog dialog box.

2. Select Plugins in the list box.3. Select IBeamReinforcement




4. Select the IBeam in the model

4. Plug-in properties

4.1. Picture

4.1.1Cover thicknessOn the picture tab page the user can enter the cover thickness for the top and bottom flangemesh and for the stem mesh. The stem mesh has the same top cover thickness as the ubars.

The top longitudinal bars are placed between the U bars. They are defined on the U bars tappage. All longitudinal other bars are placed in the corner of the bend meshes.

4.1.2Rebars

The user can select the rebar’s size for the longitudinal and u-bars out of the rebar catalog.The size is shown on the Picture tab page. The bending radius and the grade will be shownon the Attributes tab page.




4.2. Stem mesh

4.2.1Cover thickness

The cover thickness of the most outside meshes and for openings can be entered here.

4.2.2Zones

The beam is divided into 5 different zones, which can be defined differently.

4.2.3 Length

The user can enter a length for every zone. The meshes will be placed inside this zone usinga set overlap inside this zone and another at the edge to the next zone. The meshes areplaced as polygonal meshes using the length of the mesh.

Zone 3 can be used to fill the rest of the length. The user just doesn´t enter any length valuein here. The length will be calculated by the component. (Length of the beam – all other zones.

4.2.4Overlapping inside a zone

The user can define the overlapping length between all meshes inside a zone.




4.2.5Overlapping between two zones

The user can define the overlapping length between meshes between two meshes. Themeshes are cut and only get ½ of the overlapping length.

4.2.6Mesh

The user can define the mesh type. The name and the grade of the mesh will be shown onthis tab page. The rest of the attributes will be shown on the attribute tab page.




4.3. Top and bottom flange tab pages

On the top flange tab page the user can enter all needed information for the top flange bendmeshes.

4.3.1Symmetric

The user can define if the zones will be symmetrical or not. If the user selects symmetrical =Yes, then the zone 1 = zone 5 and zone 2 = zone 4. Zone 4 and zone 5 will be grayed out.

4.3.2 Length

The bend meshes are placed inside this zone. There is no overlapping inside the zones or

between the zones. The meshes are placed directly next to each other, touching always thenext mesh. The meshes at the edge of a zone are cut at the edge.

4.3.3Mesh

The user can define the mesh for every zone separately. The name of the mesh will beshown on this tab page. The rest of the attributes will be shown on the attribute tab page.

4.3.4Same as Top

This is only on the bottom flange tap page. The user can define if all the settings on this pageare identical with the top flange tap page. If this option is set to Yes, all f ields on this tap pagewill be grayed out.




4.4. U bars tab page

On the u bar tab page the user can enter all needed information for the u bars.

4.4.1Creation method

There are different creation methods. The user can decide out of these 7 options. The defaultoption shall be “By exact spacing value with flexible first and last space”.The rebar group offers all these settings already so the values are just passed to the rebar group.

4.4.1.1. By exact spacing value with flexible first space

Creates fixed, equal spaces between the bars. The first space adjusts to even out bar distribution. Enter the spacing value in the Exact spacing value field. If the first space is lessthan 10% of the exact spacing value, Tekla Structures removes one bar.

4.4.1.2. By exact spacing value with flexible last space

Same as the first option, but the last space adjusts to even out bar distribution.

4.4.1.3. By exact spacing value with flexible middle space

Same as the first option, but the middle space adjusts to even out bar distribution. If there arean odd number of bars (two middle spaces), the other middle space adjusts to even out bar distribution.

4.4.1.4. By exact spacing value with flexible first and last space

Same as the first option, but both the first and last spaces adjust to even out bar distribution.

4.4.1.5. By exact spacings

Distributes the bars using the information you specify in the Exact spacing values field, so

you can enter every spacing value manually. Use the multiplication character to repeatspacings, e.g. 5*200, to create five spaces of 200.




4.4.1.6. Equal distribution by number of reinforcing bars

Tekla Structures determines the spacing value based on the fixed number of bars. Enter thenumber in the Number of reinforcing bars field.

4.4.1.7. Equal distr ibution by target spacing valueTekla Structures aims the spacing value as closely as possible at the value in the Targetspacing value field and determines the number of bars compatibly.

4.4.2U Bar dimensions

The user can set the cover thickness for the side of the u bar and also the length of the u bar. All other dimensions are calculated by the tool.




4.5. Attributes tab pages

The user can define attributes for meshes and u-bars. The grade and bending radius isgrayed out and will be filled out automatically through the other tab pages.

Documents

i Beam Reinforcement