To Include Lengths or Not to Include Lengths

Questions about using and the information behind / in any of the reports and schedules generated by DraftLogic Electrical.

To Include Lengths or Not to Include Lengths

Postby DeanUser » Wed Oct 27, 2010 12:25 pm

To Include Lengths or Not to Include Lengths, That is the Question...but your subject line on this forum couldn't hold it!

Over the years, fear of error or desire to minimize potential liability have resulted in the removal of any feeder length estimates from our Panel Schedules and Single Line Diagram.

We noticed that DraftLogic Electrical's Panel Schedules and Single Line Diagram include lengths, how are these calculated and how can we get rid of them if we don't want them displayed?
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Re: To Include Lengths or Not to Include Lengths

Postby forumadmin » Wed Oct 27, 2010 3:54 pm

Don't give up the day job, Dean, your income as a philosopher would not likely support even your pet mouse :)

DraftLogic Electrical calculates distances for branch circuit interconnects, branch circuit home runs, and feeders using a 3D interpretation of your 2D floor plan in DraftLogic Electrical. So both horizontal and vertical distance is accommodated for. In regards to branch circuit home runs and power tree feeder connections, overhead connections are calculated using the right angle distance for the horizontal distance and then a multiplier of the floor-to-floor parameter distance versus delta between floor boundary assigned ID numbers for the vertical distance. In-slab connections use the same floor-to-floor logic for vertical distance but use direct distance for the horizontal distance (i.e. 'as the crow flies').

So that's how the lengths you see in the Panel Schedule and Single Line Diagram are calculated. These distances are converted to feet for imperial unit-based projects and meters for metric unit-based projects. We added 'EST' or 'Estimated' behind the values to give the designing engineers some comfort that their clients and construction contractors would not expect these values calculated in AutoCAD to exactly match the as-built distances.

Where the engineer on the project would simply rather not have the lengths showing on the Panel Schedule and/or Single Line Diagram, the latest releases of DraftLogic Electrical include another set of blocks for each of these reports that do not even include the length label or attribute to be populated. To put these in use, go to your DraftLogic Electrical\Server\blk directory and look for the '20100728_PanelFooterAndSingleLineNOLengths' subfolder (or very similar name if we have subsequently updated it)--copy either or both of the Panel Schedule footer block and/or Single Line Diagram wire block into the main DraftLogic Electrical\Server\blk directory, overwriting the blocks of the same name already there.

If there is a change of mind later, and you want the blocks with lengths included back, there is a copy of them in the '20100728_PanelFooterAndSingleLineWithLengths' subfolder (or very similar name if we have subsequently updated it) to copy and paste back into the the main DraftLogic Electrical\Server\blk directory, overwriting the blocks of the same name already there.

Note that only certain attributes in the schedules have been set up to disappear without an issue, so best not to delete any without checking with us first--taking more attributes out will likely result in a Trouble Report due to the missing attribute when DraftLogic Electrical next tries to run the affected schedule.

AutoCAD technical note:
When a block is inserted into a drawing, the drawing actually adopts into itself a copy of that block definition as it exists at the time of insertion. Any subsequent changes to the block definition will not be absorbed unless the old definition is completely removed and the block is then reinserted. For model space blocks, we have a tool to update the block definitions to the newest from the DraftLogic Electrical\Server\blk folder. For blocks that generate to layouts, like all the schedules do, it is best to delete the layouts the now-changed schedules were on, purge the drawing to get rid of the old block definition, and then rerun the schedule in question to get the new design of the block used.
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