Lap joint to coupler connection

Tool(s): Coupler, Thread, Connecting Bar

You can use the Lap joint to coupler connection tool to convert a lap joint to a coupler connection. The couplers and accessories (if any) are created along a division line you can define freely.
When the coupler connection is created, the program checks that every bar in the first placement actually has a counterpart in the opposite placement and that the axial spacing between the bars is within a specific tolerance range.

To convert a lap joint to a coupler connection

1. Click Coupler, Thread, Connecting Bar (How).
   

   Activate Coupler, Thread, Connecting Bar in one of the following ways

   • Menu bar: Create Engineering Bar Reinforcement

   • Palette: Tools Create area in the following module(s):

   Bar Reinforcement

   • Configuration: Engineering Display flyout
2. Select the required manufacturer.
3. Select Lap joint to coupler connection on the context toolbar or click OK if this option has already been selected.
4. Click the placement to which you want to apply a coupler or connecting bar/thread.
5. Define the division line by entering a start point and an end point.
   Use the tools in the dialog line and on the shortcut menu. Requirement: no hooks.
   

   When you draw lines and polylines, the following additional drawing aids are provided in the dialog line:
   

   Icon	Function	Use
   	No icon pressed in	The lines can be drawn at any angle. This is the default setting.
   	Enter at right angles	The line can only be drawn at right angles to the current system angle.
   	Cursor snap	The line can only be drawn at specific angles.
   15.00	Cursor snap angle	Define the cursor snap angle here (only possible when is enabled).

   

   • Click the point.
   • Align to points using the linear snap function and click the point.
   • Define the point by making entries in the dialog line.

   Tip: To find out how to enter points in Allplan, see Precision Drawing.

   Tip: The shortcut menu and dialog line provide tools and options to assist you in the process of entering points. For more information, see Tools and Options.

   After having checked the geometry, the program opens the Selection of Articles where you can select a catalog. All the classes and articles that match the current parameters (e.g. diameter, bending shape) are displayed.
   Clicking a manufacturer in the tree view displays information on this manufacturer in the right pane. Click Options ... to specify whether the Selection name or the Company name is displayed in the tree view.

6. Select the relevant coupler and, in the case of the SAH thread bar coupling system, the load type and click OK to confirm the dialog box .
   

   Available couplers and accessories

   The couplers and accessories that are available to you depend on the selected manufacturer.

   • Couplers and accessories of the SAH thread bar coupling system
   • Couplers of the LENTON rebar splicing system
   • BARTEC screwed-sleeve joints
   • ARMATURIS rebar couplers

   After having checked the boundary conditions, the program opens the Selection of Articles dialog box again. The connecting bars/thread appropriate to the diameter is/are displayed.

   

   Checking the boundary conditions

   When couplers, threads and connecting bars are created, the program checks certain boundary conditions. When these conditions are not adhered to, the program displays an appropriate message and does not create the relevant couplers, threads and connecting bars.

   The program checks the following boundary conditions:

   • Minimum distance of coupler or lock nut to bend
   • Distance of bars placed (spacing) for end anchorage and partially for coupler connections.
     The minimum distance must be observed when coupler connections are created. Otherwise, the torque wrench cannot be used.

   Note: The program does not check the edge-to-edge offset and the axial spacing between bars placed individually (single placement) or between neighboring placements!
   Observing these conditions is the responsibility of every individual user.

7. Click OK to confirm the dialog box.

   After having checked the boundary conditions again, the program converts the lap joint and adds symbols representing the coupler and the lock nut of the connecting bar or the thread to the placements and the relevant schema bar. The relevant bar segments are lengthened or shortened so that the end of the coupler (including any accessories) and the division line are exactly the same.
   The two placements will get a new mark number if there are more placements of the original marks.
   In addition, the labels for the schema bars include information on the coupler type, lock nut and accessories (if any). Information on the lock nut of the connecting bar or thread is also included. The label for the coupling bar includes the modified length of the bar segment and the length including coupler in brackets provided Label Segment is selected.
   

Notes

• Whereas the name of the coupling system is always included in schema labels for bars with couplers and/or threads as well as for connecting bars, this information only appears in labels for the placement when the Steel grade parameter is selected.
• When you delete the couplers and lock nuts of the connecting bar or threads, the lengths of the bar segments are adjusted so that the two placements are retained and the joint becomes slightly obtuse.