The H-Factor

Previously I mentioned Listing Order. This post takes things up one level to discuss just what ends up where when a job is AutoListed.

From the HydraCAD Manual / Electronic Help:

It is important to understand how the Listing tags work in order to achieve a successful AutoList run. There are two types of Listing tags. One for welded pipe (mains and welded branch lines) and one for non-welded pipes (threaded or plastic lines.)

The Listing ID for a main usually begins with a space followed by a letter. This is noted throughout this chapter as _A (Space A) wherever such a main ID is used. The green line before the A in the above picture represents this idea. The 01 in the above image represents the zeroth (0) fabrication method (first of five FIG Groups, set through the Listing Tag Setup dialog) followed by a 1 which means Welded.

The Listing ID for a line usually begins with a number. The 22 in the above image represents the second (2) fabrication method (third of five FIG Groups, set through the Listing Tag Setup dialog) followed by a 2 which means Threaded.

You cannot have two Listing tags with the same Listing ID whether they are mains or lines. The AutoList program will detect Listing tags on your drawing and begin to gather information in the direction that the Listing tag is pointed. The direction that the tag is inserted is  the direction you want the listing to be done, usually the direction of the water flow in the system.

You may be able to stocklist a threaded sprinkler system with a welded main by placing a single Listing tag at the start of the system piping. You can also divide the system into listed areas by inserting multiple Listing tags and using Stop Signs if necessary.

When a main is tagged, the listing program will travel down that main until one of four things happen:

1.       It runs out of main. In real life, the main usually runs out at a cap.

2.       It encounters another listing tag on the main. The first tag is usually pointing in the same direction as the next tag encountered.

3.       It encounters a Stop sign or Fake tag.

4.       All of the other pipes connected at a junction have already been listed. AutoList will not list anything which has already been listed.

When a line or riser nipple is tagged, the listing program will travel down that line until one of four things happen:

1.       It runs out of line. The line usually runs out at a sprinkler.

2.       It encounters another listing tag on the line. The first tag should be pointing in the same direction as the next tag encountered.

3.       It encounters a Stop sign or Fake tag.

4.       It runs into a main. It will stop here, since the mains are usually listed before the lines, and AutoList will not list anything which has already been listed.

The one thing that determines whether piping is a main or a line is the listing tag. Welded tags are usually associated with welded mains and welded branch lines. Threaded tags are usually associated with threaded or plastic/copper lines. If the lines are to be welded, they are for all practical purposes mains and should be tagged with welded tags. These lines should be drawn in the lines layer (SPRKDAT2). Note: Your choice of main and line numbers critically affects the order in which the stocklist is produced and reported.

Lines are normally drawn in SPRKDAT2 (yellow) and mains in SPRKDAT1 (white). This does not mean that things drawn in SPRKDAT2 can’t be listed as mains; this is quite common when the “main” is 1 ½” inches in diameter or larger. When a main is drawn normally (SPRKDAT1), any lines connected to it will automatically be numbered, listed, and consolidated. These lines will be threaded. If the main is drawn in the lines layer, or if the line fabrication method is other than threaded, you must tag the lines yourself. Armovers (SPRKDAT3 green) are treated line threaded lines. Underground (SPRKDAT4 dark blue) are not designed to be listed by AutoList.

As a recap from the previous post on listing order:

Tagged welded piping always lists before tagged threaded piping. Within either type of fabrication, the naming of the tag further determines the order of listing. Numbered tags list before lettered tags. Lower numbered tags list before higher numbered ones (1 before 2). Likewise, lower lettered tags list before higher lettered ones (A before B). A space before a letter or number will make that tag take precedence over all others. A general rule worth following is to name the mains the lowest, the riser nipples higher and the lines the highest. Always use a space before a main identifier, and you shouldn’t have any problems.

How does AutoList decide what order to list piping in?

Here are the general listing rules that pertain to the order:

1. Welded piping (whether lines or mains) lists before Threaded piping
2. Welded piping is listed in alphanumeric order (specifically, the ASCII order)

Per the ASCII order, numbers list before letters. Punctuation marks, including spaces “ “ list before either (because spaces come before numbers in the ASCII chart).

You want the mains to list first, then the welded lines and then the riser nipples.

Label accordingly using this scheme:

Label the Mains as such “ A”, “ B”, “ C” etc. notice the SPACE before each letter in those three examples. This forces the mains to list first.

Label the welded lines using a letter before a number, such as “L1”, “L2”, “L3”, etc.

Label the riser nipples using a letter before a number, ensuring the letter(s) used come after the letters used on the welded lines (RN comes after L), such as “RN1”, “RN2”, “RN3”, etc.

From the manual:

“Tagged welded piping always lists before tagged threaded piping. Within either type of fabrication, the naming of the tag further determines the order of listing. Numbered tags list before lettered tags. Lower numbered tags list before higher numbered ones (1 before 2). Likewise, lower lettered tags list before higher lettered ones (A before B). A space before a letter or number will make that tag take precedence over all others. A general rule worth following is to name the mains the lowest, the riser nipples higher and the lines the highest. Always use a space before a main identifier, and you shouldn’t have any problems.”

I will soon be posting about what rules apply to listing in general, as the order is only part of it….

We’ve all seen this. You have a nice drawing in front of you, but when you do Zoom Extents (or Zoom All), your drawing disappears and you find yourself floating out somewhere near the (ex)planet Pluto. You select all around outside of what you want to see and there is nothing there.

Sometimes you can zoom around out there and find a stray object and just delete and all is fine. Other times you can copy the ‘good’ stuff and paste it to another drawing. But what if that fails? The stray objects in question could be damaged entities, or text objects with null text, or blocks with nothing in them.

I had a customer send me such a drawing and after decades of just dealing with it, I wanted to dig deeper. I tried a suggestion whereas you do a Zoom Extents (ZE is one of our aliases) and then hit CTRL+A. This highlights everything in the drawing. The idea here is that you can then see more easily those things out in space, because they have an easy to see grip attached. This didn’t work for me.

So I found another video with the right suggestion (from Autodesk no less), for me, for this drawing. This is the link: Erase Empty Objects in AutoCAD

This is what it says to do:

1. Type in ERASE
2. Hit CTRL+A to select everything in the current space of the drawing, seen and unseen
3. Holding down the SHIFT button, grab what you want to keep. This will remove them from the selection set Erase will act upon. The remaining objects may or may not be visible
4. Press Enter

In my drawing, out of 80,000 objects, 12 were erased. A subsequent Zoom Extents now worked perfectly.

HydraCAD has long been able to create a file that can be opened in the JCI/Tyco/SprinkCAD Fluid Delivery Time program. That program is required to open the exported file. Hydratec and SprinkCAD worked together to offer this tool.

The file can be created from HydraCAD using a process similar to AutoCalc. The following is from the HydraCAD manual and the HydraCAD Help file:

Note: The pipe to be exported must be sized. There must be a water supply, at least one flowing head tagged using the Operating Sprinklers command. The drawing should be raised to 3D before executing.

1. The menu command Create Tyco FDT File will create a file that can be opened and calculated in SprinkCALC with the FDT option. Select the command from the HydraTools->Tools->Export menu:

2. An informational message is displayed after launching. Press OK:

3. The below dialog box appears. If the drawing is not already elevated to 3D, pick 1. Raise Drawing to 3D. You will need to restart this command after the drawing is raised in this manner. If the drawing is already raised, pick 2. Generate FDT File:

4. This displays the AutoCalc Setup FDT dialog. None of the settings here affect this particular process, so just pick the Calc button:

If you get an error message, the most probable cause is un-sized pipes. You can cancel the process and size them; otherwise, proceed and fix those pipes in the Tyco program.

5. If there are no errors, the Save As dialog box will appear. Choose a location and give the file a name. The file will have the tych extension:

6. You will get a message stating that you are creating a new file and are given the opportunity to copy the header data from a file you have already created.

Select Yes if you have the Header Data already entered into an existing job.  Select No to open the following dialog box where you can fill in the appropriate information and press OK when you are finished:

7. A message will appear indicating that the file was created. You should now be able to open the file in SprinkCAD FDT:

Way back in the olden days of 2014 I wrote a blog entry on BIM LOD. Sometime between then and now they snuck in a BIM Level 350, so I figured it was time to revisit this topic.

From www.united-bim.com 

In the current context, there are six different levels of development that are defined by the American Institute of Architects (AIA). According to AIA, LOD outlines the design requirements at each stage.”

(even their nice picture doesn’t show six levels)

At LOD 100, which is the pre-design stage, the model consists of 2D symbols and the masses to signify an element’s existence.

At LOD 200, the elements are partially defined by outlining their approximate quantity, size, shape, and location.

By LOD 300, the elements are defined with exact dimensions and their relative positions bolstering precision.

LOD 350 describes the information about an element precisely and outlines an element’s relation and connection with other components.

LOD 400 outlines the basic information about the construction of various elements.

LOD 500, the model begins representing the real-life functions of elements in a real building.

There is a table of examples on their page as well..

Here’s where our software and it’s related applications fit in:

LOD 300 

This is your standard AutoCAD / HydraCAD drawing. This is also what Navisworks fits into. And, if you export a HydraCAD drawing to Navis Manage model, it is a precisely drawn model (like the HydraCAD for AutoCAD drawing is) and is defined using exact dimensions, but information is only stored in a few elements

LOD 350

This is your standard HydraCAD for Revit model. Each element has information about the manufacturer, type of fitting, schedule, finish, material, or the like. It also covers Revit models that are generated automatically from HydraCAD for AutoCAD, but you may need to add additional information to some of the elements depending on what the BIM manager wants to see

PS – 

LOD 100 is your basic pen and pencil estimate sketch
LOD 200 is that estimate sketch done in HydraCAD for AutoCAD of even done using Sketch-it or another simple sketch program. It just means that things kind of look like what they are and there is a parts schedule or count
LOD 400 models include all the instructions needed to fabricate and assemble particular elements, even the building
LOD 500 is not used at this time

Here’s hoping they don’t invent a BIM LOD 375…

When a riser nipple is inserted a property is programmatically set identifying the riser nipple as a Line, Main, Arm-over or Underground for listing purposes. This can be ascertained by looking at the Properties of the rider nipple in question.

Most of the time, the way it is set is perfectly correct. On occasion, however, you might want to list a riser nipple a particular way. This most often happens when a riser nipple connecting a line to a main should be listed as a Main component due to a particular fitting or fabrication method, instead of the default listing configuration of Line. You could change it in the Properties or you can do it a better way:

The Change Riser Nipple Listing Type command will make this easy.  The Edit Riser Nipple command (ERN) on the riser nipple flyout of the Piping toolbar is where you will find it.

Type in ERN and pick the third item on that menu to activate the command.

This command adds a colored diamond to each riser nipple. The color assigned denotes how the riser nipple is defined, for listing purposes.

If you want to change one of those riser nipples, select the Pipes to Change and pick Apply. You will then be prompted to select the riser nipple(s) to change; the ones you select will be filtered based on your above selection.

Picking Exit will clear all the diamonds.

I never knew about this option until Googling about it today related to a customer reported problem.

The problem was related to an old AutoCAD bug which allows a build up of a great number of annotation scales. This will cause a fatal error at various times in a drawing session. But, it won’t cause a problem on other machines if the following dialog were set to Always perform…

I had chosen that Always perform… option on my computer, so when reloading the drawing to get this screen capture and send it to our customer, the dialog did not come up, because I told it not to. How to reset it?

Go into AutoCAD Options and select the System tab.

Select the Hidden Messages Settings button

Select the messages you want to un-suppress in the future. I really don’t know how many possible dialogs can show up here, but these are the ones I have, apparently, selected on my machine.