Offset Tap - CADWorx - Help

CADWorx Plant I tab: Offset Tap

Command line: OTAP

Creates offset tap connections for use by Isogen. Offset taps are for use with large branches. After you create an offset tap connection for a component, you can route piping from that point. Use offset taps for all major branches of the main pipeline. Offset tap is more robust at processing branches then tap connection. Use an offset tap connection if Isogen reports discontinuity or tap connection does not produce the necessary results.

Verify that the main size is set to the size of the tap before drawing this component.

The OTAP command allows several types of pipe-to-pipe connections. The default connection for OTAP is TANGENTIAL (TTSO). To change to another type of connection, change the symbol key (SKEY) value on the Isogen Data Dialog Box for the OTAP component.

If the OTAP connects two pipes that are the same size, using the following SKEY produces the following results:

TERF, TESO, TSRF, TSSO:

• The length of pipe for the cut list increases to include the OTAP length.

• The dimension includes OTAP length.

If the OTAP connects two pipes that are the same size, using the following SKEY produces the following results:

TORF, TOSO, TTRF, TTSO:

• The actual length of pipe drawn in the model is used for the cut list.

• The dimension does not include OTAP length.

If the OTAP connects two pipes that are of different sizes (reduction), Isogen Option Switch 2 is used for cut length calculation.

Set-on Branch - Calc. to Centre Line of Main Run option with SKEYs: TERF, TESO, TSRF, TSSO:

• The length of pipe for the cut list is increased to include the OTAP length.

• The dimension includes the OTAP length.

Set-on Branch - Calc. to Centre Line of Main Run option with SKEYs: TORF, TTRF, TTSO, TOSO:

• The actual length of pipe drawn in the model is used for the cut list.

• The dimension does not include the OTAP length.

Set-on Branch - Calc. to Actual Connection Point option with SKEYs: TERF, TESO, TSRF, TSSO:

• The actual length of the pipe drawn in the model is used for the cut list.

• The dimension includes the OTAP length.

Set-on Branch - Calc. to Actual Connection Point option with SKEYs: TORF, TTRF, TTSO:

• The length of the pipe for the cut list is adjusted based on the diameter of the main and reduction pipe sizes.

• The dimension does not include the OTAP length.

Set-on Branch - Calc. to Actual Connection Point setting with SKEYs: TOSO:

• The actual length of the pipe drawn in the model is used for the cut list.

• The dimension does not include the OTAP length.

Option switch 77 Generate PAD Item Code and Show Symbol on Iso option shows a reinforcement pad on OTAP connections with SKEYs: TTRF, TORF, TERF. A CADWorx reinforcement pad does not have to be drawn in the model for these three SKEYs.

For all other SKEYs, a CADWorx reinforcement pad must be drawn in the model for it to appear in the ISO drawing.

Isogen option switch 77 No Extra Welds added at Reinforcement Pads, One Extra Weld added at Reinforcement Pads, and Two Extra Welds added at Reinforcement Pads settings control weld numbering at the reinforcement pads. Extra welds are only shown for the following SKEYs: TTRF, TORF, TERF.