Piping 2D reference

The buttons of the palette

Highlighted buttons (in the color of the plug-in) insert something new into the drawing; all others change what is already there. Every button shows a tooltip when you hover over it. A Pick button takes a value from the drawing.

Pipe page

Button / area	Effect	More
System (with Pick button)	System of the next pipes and risers; the Pick button takes it from an existing pipe.	System, Picking
System elevation (with Pick button)	System elevation of the next pipes; the Pick button takes it.	System elevation
Size	Size in mm, optional.	Size
flexible (rounded corners), Radius	New pipes with rounded corners.	Flexible
Angle increment	Increment of the direction while drawing.	Inserting a pipe
Insert pipe	Draw a pipe point by point.	Inserting a pipe
Insert parallel pipes	Several parallel pipes from the riser template chosen last.	Parallel pipes
Property fields of the next pipe	Fields every new pipe receives.	Property fields

Risers/connectors page

Button / area	Effect	More
Template list, "…"	Choose a riser template or connector template; "…" manages the templates (with the section of the selected group open).	Choosing a template, Templates
Insert riser/connectors	Inserts what is selected in the list: rise/drop symbols or connectors.	Risers, Connectors
Show the dialog box before inserting	Check the template first (risers, connectors, parallel pipes).	Inserting risers
Axis cross in the riser circle (this drawing)	Cross in every riser circle, per drawing, Piping 2D and 3D.	Axis cross
Parallel pipes: "With template: …", system elevation, Insert parallel pipes	Parallel pipes with the riser template chosen last, on the system elevation of the palette.	Parallel pipes
Edit riser/connectors …	Change a riser or connector you click; a selection window takes both.	Editing
Fixtures from the Block Library …, Connectors only from the Block Library …	Open the Block Library with the insert mode 2D.	Fixtures

Symbols page

Button / area	Effect	More
Show properties before inserting	The property fields dialog box before the cursor.	Inserting a symbol
Length	Gap length of the next symbol.	Inserting a symbol
Symbol list (search, show, sort), Insert	Choose a symbol and insert it in a pipe (also by double-click).	Symbol list
Delete symbol	Click symbols – the gap closes.	Deleting a symbol
Symbol wizard: 2 connectors / 3 connectors	Custom 2D symbol from the open drawing.	Custom symbols
Symbol folder	Folders of the symbol library, then your own one in Explorer.	Symbol folder

Manifold page

Button / area	Effect	More
Next manifold: template, 1st system, 2nd system, outlets, With cabinet	Values of the next manifold.	Next manifold
Insert manifold …	Manifold at the cursor, with the dialog box first according to the check box.	Inserting a manifold
Show the manifold dialog box before inserting	First name, outlets, outlet spacing, cabinet and templates.	Manifold dialog box
Show properties before inserting	First the property fields of the manifold.	Property fields
Change manifold …, Flip outlet side, Delete manifold	Change an existing manifold.	Changing
Connect manifold …	Select manifold and 2D fixtures – all PEX pipes at once.	Connecting
Connect connectors	Connect one outlet and one connector flexibly.	Connectors

System elevations page

Button	Effect	More
Draw elevation symbols	Click a pipe or cross several with a line, drag the symbol into place.	Elevation symbols
Delete elevation symbols	Click a pipe or cross several with a line – their elevation symbols are removed.	Elevation symbols
Update crossings	Break all crossings of the drawing again.	Crossings
Apply elevation marking	Linetype, elevation symbols, elevation table and crossings for all pipes of this drawing.	Applying

Output page

Button	Effect	More
Bill of materials, "…"	Pipe lengths and counted fittings; "…" = list options.	Bill of materials, Options
Bill of materials across the project …, Bill of materials across xrefs …	Across several plans.	Plan lists
Update lists	Recalculate inserted tables.	Updating
Evaluate visible objects only	Layers turned off or frozen are not counted.	Bill of materials
Annotate, Templates …, Multiple …, Edit, Check, Reassign	Annotations from templates.	Annotating
Elevation table	Insert or renew the table of system elevations.	Elevation table

Tools (below every page)

Button	Effect	More
Connect	Connect two pipes – proposals at the cursor; if their ends meet, they become one.	Connect
Move	Move pipes sideways, neighbors follow; a symbol along the pipe.	Move
Break	Divide a pipe at a point, break point by hand.	Break
Delete	Pipes with circles and elevation symbols; a manifold.	Delete
Properties	Change pipes, risers, connectors or a manifold.	Properties
Change system elevation	Only the system elevation of selected pipes.	Change system elevation
Check	Count and check pipes – result in the command line.	Check

All keys at the cursor

The same key means the same thing in every plug-in. Which one applies right now is shown by the action bar at the cursor; Shift and Ctrl are never used at the cursor (they belong to the CAD).

Key	Meaning in Piping 2D
`A`	before the first point (pipe, parallel pipes, riser, connector, manifold): distance to a reference point; while drawing: system elevation, wall offset and fixed length; Move: a distance or the wall offset to the pipe at the cursor
`Space`	while drawing: snap to angle / free; riser row: next riser at the cursor; connectors and manifold: switch the base point; Move: free or next pipe
`W`	pick an angle – always two clicks
`D`	type an angle (degrees)
`R`	riser row by 45 degrees, rotate connectors and manifold
`S`	parallel pipes: side of the risers; manifold: outlet side front/back
`M`	manifold: mirror in turn top/bottom, left/right
`P`	while drawing: match the properties of a pipe; parallel pipes before the first point: pick pipes
`N`	while drawing: match the system only
`G`	moving several pipes: free in plan view
← / →	with a wall offset: switch the side
`Tab`	Connect, PEX: next solution
`Enter`	finish or accept
`Esc`	cancel – while drawing the placed segments stay; with a dialog box shown first, back to the dialog box

Symbols and elevation symbols have the option Mirror in the command line at the cursor (no letter key).

The gear menu

Entry	Effect
Settings › Systems	The system definitions with the own list of Piping 2D – see Systems.
Settings › System elevations	The System elevations dialog box: the system elevations of the drawing – see System elevations.
Settings › Elevation marking	Linetype per system elevation, elevation symbol, crossings, circle at elevation change – see Elevation marking.
Settings › Manifold options …	Which system has which role at the manifold, look of the cabinet – see Manifold options.
Settings › Drawing units …	In which units new parts are created and fields show lengths – for all plug-ins.
Settings › Snap radius when drawing …	How close the cursor has to come to a pipe for the run to snap – shown as a circle at the cursor.
Properties › Property fields …	Which fields exist (default fields, your own fields) – for all plug-ins.
Properties › Property fields of a pipe …	Click a pipe – the fields of its network.
Properties › Author …	The name in outputs – for all plug-ins, empty by default.
Layer › Create all layers of this plug-in	Creates missing layers; existing ones stay as they are.
Help › Help	This online help.
Help › Info	Version and program components.
Help › Getting started active	Cards of the pages and insertion help for this plug-in on or off.
Help › Show getting started	The tip wizard guides through the page shown; all pages show their tips again afterwards.
Help › Exit	Close the palette – open it again from the ribbon.

The LuaCAD settings (for all plug-ins) are on the ribbon › LuaCAD tab › Info – see Getting started. Piping 2D has no levels and no elevation values; the system elevations are the system elevations of the drawing.

Dialog boxes

System elevation and wall offset while drawing

Picture coming soonThe System elevation and wall offset while drawing dialog box: short line with "i" (1), system elevation (2), wall offset with value and side (3), Next segment: fixed length (4)

Opens while drawing a pipe or parallel pipes with A; applies to the running insertion only.

Field	Effect
System elevation	The system elevation from the next click; an elevation change circle is created at the corner. If there are no system elevations, a note says so (gear menu › System elevations).
Wall offset	Value and side (left, right in drawing direction, none) – the pipe runs at this distance next to the drawn line, in this run only.
Fixed length	0 = drag with the mouse; otherwise after OK a segment of this length is inserted in the current direction.

See System elevation, wall offset and fixed length while drawing.

Properties

Tools › Properties, or Edit riser/connectors on risers. ONE dialog box for pipes, risers and free connectors; it shows only the rows that fit the selection. What you do not touch stays.

Field	Applies to	Effect
Header	–	"n pipe(s) selected", "n pipe(s) and m riser(s) selected" or "m riser(s) selected".
System	all	New system; "(unchanged)" if the selected ones differ.
System elevation	pipes	New system elevation or "(no system elevation)"; changes the linetype, crossings and elevation changes follow.
Size	all	Size in mm; empty = none (with differing values: empty = unchanged).
Risers › Direction	risers	none, up, down, through – the arrow in the rise/drop symbol.
Risers › Insulation	risers	Insulation thickness in mm, 0 = not insulated; insulated adds the second circle (radius + thickness).
Flexible › flexible (rounded corners)	pipes	Check or clear; three-state with differing values. The line becomes a polyline or back.
Flexible › Radius	pipes	Radius of the corners, at least 1 mm.
Connectors (right)	free 2D connectors	The same rows as the connector dialog box.

Change system elevation

Tools › Change system elevation. At the top "n pipe(s) selected" and "Current: …" (the system elevation of the selected ones, "various"). New system elevation: the one from the palette is proposed; "(no system elevation)" removes it. The Pick button closes the dialog box, lets you click a pipe and shows the dialog box again with its system elevation.

Elevation marking

Gear menu › Elevation marking. Applies to all drawings; after OK also to the existing pipes of the active drawing. If there are no system elevations, a note at the top says so. Every setting: Gear menu › Elevation marking.

Systems

Gear menu › Systems. The system definitions with the own entry of Piping 2D: an own list (taken over from Piping 3D at the first start) with its own display. Two entries per system:

Entry	What it draws
single-line (2D pipe)	Pipes, rise/drop symbols, manifolds and symbols of Piping 2D – layer, color, linetype, lineweight; independent of the display in Piping 3D.
riser insulation circle	The second circle of an insulated riser – color, layer and linetype of its own.

Double-click edits a system, OK saves. A change "by layer" goes to the layer of the current drawing. More under System.

System elevations

Gear menu › System elevations. The list shows per system elevation "abbreviation [distance in cm above/below reference level]", the higher ones first. Edit opens per system elevation abbreviation, name, reference level and distance. After OK the existing pipes of the drawing follow (renamed abbreviations, linetype, elevation symbols, elevation table, crossings).

Manifold

Comes before inserting (with the check box "Show the manifold dialog box before inserting") and with Change manifold …. The values apply to the next manifold or the clicked one; with OK it hangs at the cursor. Every setting: Manifold dialog box.

Manifold options

Gear menu › Manifold options …. Systems of the rows: the system per role – applies to all drawings. Display: the look of the cabinet. Every setting: Manifold options.

Riser and connector templates

Risers/connectors page › "…". The risers at the top, the connectors at the bottom; the section of the selected group is open. OK saves both. The same dialog box in "one template" mode is the check before inserting (title "Insert riser", "Parallel pipes" or "Insert connectors"): changes apply to this insertion only, the template stays; Esc at the cursor returns there. Every setting: Templates.

Connector

Edit riser/connectors … or Properties on free connectors or connectors of a 2D fixture. The 2D version has no elevation. Only what you enter is changed; empty fields stay as they are for all selected connectors.

Field	Effect
System	The system of the connector (systems of Piping 2D). A pipe that starts here gets it.
Size	Size in mm.
Outlet direction	The direction in which the pipe leaves the connector (in the plane).
End type	End type or "(no value)".
Text	Free description, for example "shower" – shown next to the system wherever the connector is named.
x / y	In a set only: the position relative to the insertion point – x along the wall, y into the room.

Symbol wizard

Picture coming soonThe symbol wizard: introduction (1), Detected (2), Name (3), Properties … (4), Folder with "…" (5)

Symbols page › Symbol wizard: 2 connectors or 3 connectors. For 2D only – solids are left out.

Field	Effect
Detected	How many objects the line drawing has (and how many 3D solids or skipped objects are left out).
Name	Name of the symbol – that is its name in the palette and the name of the file.
Properties …	Property fields of the symbol (description, manufacturer, article number …); every inserted symbol brings them along.
Folder, "…"	Your own folder of the symbol library where it is saved; "…" adds or removes folders (also network drives). Below it: "Saved to …".

After OK click the connectors – see Custom symbols. If the symbol already exists, the wizard asks whether to replace it.

Distance

A before the first point: the values X and Y to the reference point (for connectors and manifold also the base point in the 3 × 3 grid). The distance applies to all further parts of this command. See Inserting at a distance.

Property fields before inserting

With the check box Show properties before inserting (Symbols and Manifold pages): the values go to every part you insert now; a tag is counted up. Esc at the cursor returns here. Afterwards change the values of a part in the Properties palette.

Drawing units and snap radius

The Snap radius when drawing dialog box: diameter (1)

Dialog box	What it controls
Drawing units …	In which units new parts come into the drawing and fields show lengths: automatic, mm, cm, dm, m. Applies to all plug-ins – see Drawing units. The size is always in mm.
Snap radius when drawing …	The diameter of the circle at the cursor in the drawing (default 30 mm, 2 to 2000 mm): whatever it touches, the run snaps to. A pipe of another system never snaps in Piping 2D.

Prompts

Prompt	When	Choice
Clash	A new segment crosses a pipe on the same system elevation.	Choose another system elevation · Ignore and continue
Another system at the connector	A pipe starts or ends at a connector with another system of the same role.	Adapt the system of the connector · Adapt the system of the whole pipe · Ignore and continue; `Esc` = step discarded
Take the system too?	Picking the system elevation at a pipe with another system.	Take the system too · System elevation only

Every setting in detail

Here is every setting of Piping 2D – in the palette, the gear menu and the dialog boxes – with its effect, the default value and an example. Values in the palette apply only to pipes and parts you insert from now on and are saved right away; while a run is in progress they apply from the next segment. Settings in the gear menu apply to all drawings unless "per drawing" is noted. Type lengths in the unit of the field; every number field calculates ("600+400" becomes 1000). A "-" in the column "Default" means: the value depends on the data.

Palette, Pipe page

Setting	What it does	Default	Example
System	System of the next pipes – sets color and layer; only the systems of Piping 2D. The Pick button takes the system of a pipe. Change systems: gear menu › Systems.	the first of the list	cold water
System elevation	System elevation of the next pipes – sets linetype and crossings; the same list as on the Risers/connectors page. The Pick button takes it. Create system elevations: gear menu › System elevations.	(no system elevation)	in the floor
Size	Size in mm, optional – for list, annotation, riser circles and conversion to 3D. Empty = none.	empty	20
flexible (rounded corners)	New pipes as a polyline with rounded corners.	off	on for PEX
Radius	Radius of the rounded corners; available only with "flexible". If it does not fit, a smaller one is used (red at the cursor).	300 mm	250 mm
Angle increment	free, 15°, 30°, 45°, 90° – the steps the pipe follows; Space switches between free and increment while drawing. W/D align its base direction.	45°	90° for right-angled plans
Property fields of the next pipe	Fields every new pipe receives (only those it does not carry yet).	no values	plant "SAN-01"

Palette, Risers/connectors page

Setting	What it does	Default	Example
Template list	Riser template or connector template for "Insert riser/connectors"; parallel pipes take the riser template chosen last. Both choices and the group are remembered.	the first riser template	cold/hot water with recirculation
Show the dialog box before inserting	Before risers, connectors and parallel pipes first the template in a dialog box – applies to this insertion only; off = straight to the cursor. The same as in Piping 3D.	on	off for fast work
Axis cross in the riser circle (this drawing)	Cross through every riser circle – per drawing, Piping 2D and 3D, also for existing risers.	off	on
System elevation (parallel pipes)	The same system elevation as on the Pipe page – here at hand.	(no system elevation)	below the ceiling

Palette, Symbols page

Setting	What it does	Default	Example
Show properties before inserting	The property fields dialog box before the cursor; the values go to every symbol of the sequence.	off	on to assign tags
Length	Length of the symbol in the pipe = gap from connector to connector, in total (not per connector) – applies to the next symbol.	150 mm	200 mm
Symbol (list)	The symbol that "Insert" places; remembered.	valve	ball valve
Search, Show, Sort	Filter and order of the list (All / Standard / Custom; Library / Name / Recently used).	-	Custom

Palette, Manifold page

Setting	What it does	Default	Example
Template	A manifold template brings all values, including the name.	(no template)	"bathroom manifold"
1st system	System of the first row.	cold water (from the manifold options)	cold water
Outlets (1st system)	Number of outlets, 1 to 24.	4	3
2nd system	System of the second row; "no system" = one row.	hot water (from the manifold options)	hot water
Outlets (2nd system)	Number of outlets of the second row, 1 to 24.	4	2
With cabinet	Cabinet as an outline.	on	off for a surface-mounted manifold
Show the manifold dialog box before inserting	First the manifold dialog box with name, outlets, outlet spacing, cabinet, templates.	on	off
Show properties before inserting	First the property fields of the manifold.	off	on

Palette, Output page and list options

Setting	What it does	Default	Example
Evaluate visible objects only	Pipes on layers that are turned off or frozen stay out of every list.	off	on
List options › Per system (column System)	Equal parts per system in their own rows, sorted by system.	off	on
List options › Design list …	Columns, sort order, totals, filter, Excel template in the list layout dialog box.	default template	your own template "office materials"
List options › Quantities across the project / across xrefs	Quantities combined, per plan or per level.	-	per level
List options › Output	As a table in the drawing · As a file (CSV or Excel) · Ask every time.	Ask every time	As a file
List options › Text height	Text height of the table in the units of the drawing.	100 mm	150 mm
List options › Format	CSV (text, delimiter) or Excel workbook (.xlsx).	CSV	Excel
List options › File name	From the drawing name with suffix (and folder; empty = next to the drawing) · Fixed file name · Ask every time.	from the drawing name	suffix "_bom"
List options › Delimiter	Delimiter of the CSV file.	semicolon	tab
List options › Ask before overwriting a file	Prompt if the file already exists.	on	off
List options › Open file after writing	Open the file afterwards.	on	off

Gear menu › Elevation marking

Setting	What it does	Default	Example
Linetype per system elevation	by system, continuous, dashed, dash-dot, hidden (short dashes), center, dotted.	1st by system, 2nd dashed, 3rd dash-dot, others by system	"below the ceiling" dashed
Circle at elevation change	Diameter of the circle at the corner of two pipes on different system elevations (in the drawing), greater than 1.	60 mm	80 mm
Elevation symbol at the pipe › Symbol shows	Abbreviation of the system elevation (German practice) or slashes (Swiss practice) – as many as its position in the list.	abbreviation	slashes
Text height on the plot	Text height of the abbreviation and elevation table on the plotted plan, at least 0.5 mm; in the drawing times the plot scale.	1.8 mm (smallest text to ISO 3098)	2.5 mm
Plot scale	1 : n at which the plan is plotted – gives the text height in the drawing (1.8 mm × 50 = 90 mm); at least 1.	1 : 50	1 : 100
Slash length	Length of the slashes of the elevation symbol, greater than 1.	40 mm	60 mm
Break crossings automatically (the lower system elevation)	The lower pipe of a crossing gets a gap; same system elevation: none.	on	off
Gap length	Length of the gap at a crossing in the drawing, greater than 1. For the plot to ISO 6412 at least 5 × the line width on paper.	50 mm	125 mm at 1:50

After OK everything also applies to the existing pipes of the active drawing; other drawings are updated with "Apply elevation marking".

Gear menu › System elevations

Field	What it does	Example
Abbreviation	The abbreviation of the system elevation – required, unique (regardless of upper/lower case); shown at the pipe, the elevation symbol and in the table.	D1
Name	Full name; in lists "abbreviation – name".	in the floor
Reference level	The reference level of the level from which the distance counts (TOS, BOS, FF, FC …).	FF
Distance	Distance from the reference level (from 0) – in 2D it only sets the order (which one lies on top), when converting the elevation.	50
Load from template / Save as template	Get the list from your settings or store it there.	–

Gear menu › Systems

Entry	What it does	Default
single-line (2D pipe)	Layer, color, linetype and lineweight of pipes, rise/drop symbols, manifolds and symbols of this system. The linetype of the system elevation takes precedence if the elevation marking sets one.	taken over from Piping 3D
riser insulation circle	Look of the second circle of insulated risers.	-

Gear menu › Manifold options

Setting	What it does	Default
Systems of the rows › cold water	System of the role cold water.	Default: the system LuaCAD finds by abbreviation and description (reduced cold water)
Systems of the rows › hot water	System of the role hot water.	Default by abbreviation and description
Systems of the rows › cold water mains pressure	System of the role cold water mains pressure.	Default by abbreviation and description
Display › Cabinet	Layer, color, linetype, lineweight of the cabinet; Default = no display of its own, the cabinet looks like the first system.	Default

Manifold dialog box

Field	What it does	Default	Example
Template, Save as template, Delete template	Choose a template (its values go into the fields); for a new one type a name and save – the same name replaces; applies to all drawings.	–	"bathroom manifold"
Name	For list and annotation; empty = the next free one (V1, V2 …).	empty	M-2F
1st system, Outlets	System of the first row and its outlets (1 to 24).	cold water, 4	3
2nd system, Outlets	System of the second row ("no system" = one row) and its outlets.	hot water, 4	2
Outlet spacing	Distance between two outlets along the manifold, at least 20 mm.	50 mm	60 mm
Row spacing	Distance between the two rows across the manifold, at least 20 mm.	50 mm	70 mm
Outlet size	Size of the outlets in mm – goes to the PEX pipes.	15 mm	16 mm
Supply inlet size	Size of the supply inlet in mm.	25 mm	32 mm
With cabinet	Cabinet as an outline.	on	–
Width	Width of the cabinet; empty or 0 = from the number of outlets. Too narrow = message with the required width.	empty	600 mm
Depth	Depth of the cabinet.	150 mm	110 mm
Outlet side	front (from the cabinet into the room) or back (through the back wall) – the arrow in the cabinet shows it.	front	back
Always show before inserting	Without the check the manifold hangs at the cursor right away next time (turn on again in the palette).	on	–

Riser and connector templates

Field	What it does	Default	Example
Risers › Name	Name of the riser template, required and unique.	heating supply/return; cold/hot water with recirculation	Bathroom standard
Risers › Direction	none, up, down, through – the arrow of the rise/drop symbols.	up	down
Risers › Riser height	Optional, for the bill of materials only (0 = none) – no vertical pipe is created in 2D.	0	2800 mm
Riser › System	System of the riser; every riser needs one.	per default template	recirculation
Riser › Size	Size in mm, optional – sets the riser circle.	empty	20
Riser › Insulation	Insulation thickness in mm, 0 = not insulated – second circle at the rise/drop symbol.	0	20
Riser › Spacing to the previous one	Distance to the previous riser; the first riser (master axis) hangs at the cursor.	150 mm	100 mm
Connectors › Name	Name of the connector template.	lavatory, sink, toilet, shower, bathtub, radiator …	double lavatory
Connector › System	System or role (KW, WW, ZIR, HV, HR, GAS).	per template	KW
Connector › Size	Size in mm.	15	20
Connector › x / y	Position relative to the insertion point: x along the wall, y into the room.	per template	−100 / 0
Connector › Outlet direction	The direction in which the pipe leaves the connector.	into the wall (−Y)	–
Connector › End type, Text	End type; free description (for example "angle valve").	per template	shower

The elevation above the system elevation of a connector template does not apply in 2D; it is kept for converting to 3D.

Gear menu › Drawing units, snap radius, properties, layer, help

Entry	What it controls	Default
Drawing units …	Units of new parts and of the fields – for all plug-ins.	-
Snap radius when drawing …	Diameter of the snap circle at the cursor in the drawing (2 to 2000 mm).	30 mm
Property fields …	Which fields exist (default fields on/off, your own fields) – for all plug-ins.	–
Property fields of a pipe …	Click a pipe: the fields of its network.	–
Author …	The name in outputs – for all plug-ins.	empty
Layer › Create all layers of this plug-in	Creates missing layers (for example for an office template); existing ones stay. Change names, colors and linetypes in the GstarCAD Layer Manager – the assignment stays. The elevation table lies on `LuaCAD_BES_Listen`.	–
Help › Getting started active	Cards of the pages and insertion help for this plug-in.	on

Typical notes and errors

Message	What it means	What to do
No system is selected in the palette - choose a system first.	The segment cannot be created without a system.	Pipe page › choose a system; if systems are missing, gear menu › Systems.
There is a pipe with … - drawing … The pipe starts on it without connecting …	Connecting works only with the same system.	Intended? Then join them with "Connect" – that works between two systems.
The pipe runs back on itself - the segment is not inserted.	The new segment lies on the previous one.	Click in another direction.
The corner is too tight for the radius … - rounded with …	Flexible: the segments are too short for the radius.	Accept it, or use longer segments or a smaller radius.
The new segment crosses n pipe(s) on the same system elevation …	Clash on the same system elevation.	"Choose another system elevation" or "Ignore and continue".
The connector … has … - drawing … Not connected (same system only).	The connector has a system that Piping 2D does not carry or that does not fit.	Change the system in the palette or at the connector.
The connector … carries …, the pipe … - another role: not connected.	For example hot water to cold water.	Choose the right system.
No riser template available - create one with "…" next to the template.	Parallel pipes or riser without a template.	Risers/connectors page › "…".
The riser template '…' has no risers.	Empty template.	Add risers in the templates dialog box.
Note: n spacing(s) of the template enlarged - insulated risers need at least …	The insulation circles would touch.	Enlarge the spacings in the template.
Note: n pair(s) of rise/drop symbols touch …	Insulated risers are too close.	Move the risers apart.
There is no pipe there - please click a 2D pipe, or Enter to finish.	The click hit no pipe.	Click more precisely on the pipe.
The pipe is shorter than the symbol (…).	The gap would have no room.	A smaller length on the Symbols page or a longer pipe.
The symbol does not fit into the pipe there.	Too close to a corner, a node or another part.	Choose another location.
The pipe does not end freely there …	A symbol with one connector needs an open end.	Click near the open end.
The symbol '…' does not exist (or has no 2D line drawing) …	The selected symbol is missing.	Choose another one on the Symbols page.
The gap stays - the pipes there no longer fit together.	Symbol deleted, the halves are no longer in line.	Close it with "Connect".
The pipe cannot be broken there …	Point at an end or next to the pipe.	Choose a point in the middle of the pipe.
Not joined: …	The two pipes have different values (system, system elevation, size, flexible/radius).	Match the values with "Properties".
It cannot go further - too little pipe would remain before the next part or node.	Moving a symbol: limit reached.	Move it less far.
Note: at the elevation change the other pipe runs parallel to the moved one …	No intersection point – the other pipe pulls its end along.	Check the result.
Note: n connected outlet(s) no longer exist …	After "Change manifold" PEX pipes hang at missing outlets.	Reconnect the pipes or delete them; "Check" names them.
There is no Piping 2D manifold there.	The click hit no manifold.	Click on the cabinet or the bar.
No system elevations are set up - create them first under gear menu › System elevations.	System elevations are missing (dialog boxes, elevation table).	Gear menu › System elevations.
The drawing contains no 2D line drawing …	Symbol wizard without lines in the drawing.	Draw the symbol first.
LuaCAD: Layer "…" is locked - part not changed.	The part is on a locked layer.	Unlock the layer and repeat.
Piping 2D does not create IFC - only after converting in Piping 3D.	IFC export with 2D pipes.	Convert in Piping 3D.
n inconsistency(ies) - details are in the log.	"Check" found something.	Read the log (`LuaCAD_Gstar.log`).
Drawing did not work / The tool did not work …	An unexpected error.	Repeat; otherwise send the log to support.
The size is not a number (or negative). · The radius must be at least 1 mm. · The fixed length is not a number (or negative).	Input error in the dialog box.	Correct the value.
The diameter must be greater than 1. · The text must be at least 0.5 mm high and the scale at least 1. · Text height, slash length and gap must be greater than 1.	Input error in the elevation marking.	Correct the value.
The number of outlets must be between 1 and 24. · Outlet spacing and row spacing: at least 20 mm. · The cabinet is too narrow …	Input error in the manifold dialog box.	Correct the value.

Piping 2D reference

#The buttons of the palette

#All keys at the cursor

#The gear menu

#Dialog boxes

#Systems

#Property fields before inserting

#Drawing units and snap radius

#Prompts

#Every setting in detail

#Gear menu › Systems

#Gear menu › Drawing units, snap radius, properties, layer, help

#Typical notes and errors