Continuous Beam Reinforcement

Continuous Beam Reinforcement

The ContinuousBeamReinforcement plug-in allows user to create the reinforcement cage for Continuous Beam of varying depth as per IS13920.

How to Locate

‘Continuous Beam Reinforcement’ plug-in will be available Macros. To open the same go to Tools→Macros→Local→ContinuousBeamReinforcement.
   
  Click this Icon in in the model.

Usage

Click the icon or “Run” the Macro, the macro window will open.

1. First select the option “Select Columns” as shown below
 
2. Select all the columns either by window selection or multiple selection as shown below
 
3. Press center mouse button and select the option “Select Beams” as shown below
 
4. Select all the beams either by window selection or multiple selection as shown below
 

Plug-in Dialog box
This plug-in dialog box contains following tabs.
• Input
• Covers
• Top Main Bars
• Bottom Main Bars
• Top Add Bars
• Bottom Add Bars
• Stirrups
• SpacerBars

Input
The options is to select the columns and beams as explained in “Usage” section.

Covers
The bar stock length, cover values on all the sides, development length (Ld), Lap length and crank ration is defined here.
 
Ld (Development Length) and Lap Length are defines as multiples of rebar diameter
Crank Ratio is defined as 1: (the default slope ration is 1:6) as seen in image above.

Top Main Bars
 
Define Top Main bars for all beam or for individual beams by unchecking “For All” option.
Define multiple diameter for Side bars and internal bars.
Define safe zone for lapping (default zone is L1/3 as shown in the above image)

Bottom Main Bars
 
Define Bottom Main bars for all beam or for individual beams by unchecking “For All” option.
Define offset value “X” (default value is 50mm)

Top Add Bars
 
Define Top additional bars for all beams or for individual beams by unchecking “For All” option
Creation option allows to select the number of top additional rebar layers required (maximum 2 layers)
Define the extension value (example: L1*d1 for 1st layer & L1*d2 for second layer)

Bottom Add Bars
 
Define Bottom additional bars for all beams or for individual beams by unchecking “For All” option 
The offset can be defined using the values    at both end and middle spans

Stirrups
 
Define Stirrup reinforcement details, default spacing condition, spacing zones and end offset.
Option: Design
 
If option “Design” is chosen then the values will be takes as per IS 13920 as shown below.
 

Option: Actual 
If option “Design” is chosen then the values will be entered by user as shown below.
 

Spacer Bars
 
Define Spacer reinforcement details and spacing once for all beams.
If the number of layer is more than one it automatically creates spacer bars, still we can turn off the spacer bars by making “Creation Option” as “No” if it is not included in our scope.

Continuous Beam Reinforcement Subcomponent

The ContinuousBeamReinforcement Subcomponent plug-in allows user to modify the rebar details for the individual beam.

How to Locate

After applying ‘Continuous Beam Reinforcement’ plug-in double click the rebar cage in individual beam with component selection.
 

Usage

Can modify individual beam rebar details including main bars, additional bars, stirrups and spacer bars.  

Plug-in Dialog box
This plug-in dialog box contains following tabs.
• Top Main Bars
• Bottom Main Bars
• Top Add Bars
• Bottom Add Bars
• Stirrups
• SpacerBars

Top Main Bars
Define Top Main bars for selected beam. Adjust properties for corner bars (indicates with suffix C) and middle bars (indicated with suffix M).

Bottom Main Bars
Define Bottom Main bars for selected beam.
 

Top Add Bars
 
Define Top additional bars for selected beam at “Left hand side support” and rebar details at “Right hand side support”.

Bottom Add Bars
 
Define Bottom additional bars for selected beam

Stirrups
 
Define Stirrup reinforcement details

SpacerBars
 
Define Spacer reinforcement details.