Can I use the drawing for a real project?

As a starting point for layout and layers, yes. The ratings, settings and cable sizes are made up, so the diagram has to be checked and changed for your project before it is used for design or construction.

Why are the layers coloured?

Colours and line weights follow the layers: power circuits are red and heavy, control is cyan, signal is green. The plot style table in the ZIP prints everything black and keeps the line weights, so you can plot in black and white as well.

Which CAD programs open it?

The drawing and the template are in AutoCAD 2018 format, which AutoCAD 2018 and later open, and so do other CAD programs that read this format. The browser viewer needs nothing installed.

Resources Floor plan symbols

Nuclear medicine department floor plan: sample DWG file with controlled area, hot lab and SPECT/CT room

A complete floor plan of a 16 x 10 m nuclear medicine department at 1:100. Patients arrive at the reception and waiting area, which is outside the controlled area. A door in the corridor wall is the access point: behind it a change barrier bench, a step-off pad and a hand and foot monitor mark where clean turns into active. From the corridor you reach the injection room with a shielded injection chair, an active sink and a waste drum, two uptake rooms with recliners, an active patient toilet, and a waste store with decay cabinets, drums and a rack. The hot lab has a lead-lined radiopharmacy cabinet, a generator in its shield, a bench with L-block and dose calibrator, a source safe, a well counter and an active sink. The SPECT/CT room has 300 mm concrete shield walls on all four sides, a lead-lined door with a warning light above it and a lead glass viewing window to the control room. The plan also has room tags with net areas, zone marks, overall dimensions, a room schedule, a radiation equipment schedule, four door signs and a filled-in title block. Every symbol is a block with its attributes filled in; the shield blocks carry material, thickness and density. All data are examples: shield thickness, area classes and dose limits come from the radiation protection assessment of your project.

Free to use and modify in your own projects, including commercial ones. The ZIP holds the sample drawing, a template, a plot style table and a README; no add-in needed. The data in the drawing is made up, so it is not for design or construction. Provided as is, without warranty. Library terms (CXL-1.0)

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This sample uses these resources

The symbols are blocks from our own libraries, with their attributes filled in. The sheet and its title block come from our ISO A3 title block template. Download them to draw your own diagrams.

What is in the ZIP

Nuclear-Medicine-Plan-Sample.dwg
Sample drawing (DWG, AutoCAD 2018 format)
Architectural-Template-ISO-A3.dwt
Template (DWT) that the drawing was made on
CADXChange-Monochrome.ctb
Plot style table (CTB) that prints every colour black
README.txt
README with the layer list and how to use the files

The template

The architectural template has 10 layers with colours, line weights and linetypes (walls, floor finishes, hidden elements, column grid, symbols, escape routes, tags, dimensions, text and notes), the text styles ISO-2.5 to ISO-5, the dimension style ISO-25 and an ISO A3 layout with a title block and revision table. The layer names are a common convention, not a standard; rename them to match your company's rules.

Layers defined

Every layer in the template with its colour, line weight and linetype, and how many objects of this sample are on it. Layers the sample does not use are still defined, ready for your own drawing.

Layer	Colour	Line weight	Linetype	Used for	Objects here
Architectural layers
ARCH-WALL	7	0.50 mm	Continuous	Walls and partitions in plan	30
ARCH-FLOOR	9	0.13 mm	Continuous	Floor finishes, rugs and floor patterns	not used here
ARCH-HIDDEN	8	0.18 mm	HIDDEN	Elements above or behind the cut plane	not used here
ARCH-GRID	1	0.13 mm	DASHDOT	Column grid	not used here
SYMBOL	7	0.25 mm	Continuous	Symbols (the layer the symbol libraries use)	90
ARCH-ESCAPE	3	0.35 mm	DASHED	Escape routes	not used here
ARCH-TAG	7	0.18 mm	Continuous	Room, door and window tags	not used here
ARCH-DIM	3	0.18 mm	Continuous	Dimensions	3
ARCH-TEXT	7	0.18 mm	Continuous	General text and tables	94
ARCH-NOTES	7	0.18 mm	Continuous	Notes and legends	6
Sheet and symbol layers
0	7	default	Continuous	Default layer, keep it empty	not used here
FRAME	7	default	Continuous	Sheet border	5
TITLEBLOCK	7	default	Continuous	Title block and revision table	1
VIEWPORT	8	default	Continuous	Layout viewport frame (does not plot)	2
DRAWING-AREA	8	default	Continuous	Boundary of the model drawing area (does not plot)	2

Styles defined

The text styles, the dimension style and the linetypes that the template defines, so you do not have to set them up in each new drawing.

Kind	Name	Settings
Text style	ISO	isocp.shx, 15°, variable height
Text style	ISO-2.5	isocp.shx, 15°, 2.5 mm high
Text style	ISO-3.5	isocp.shx, 15°, 3.5 mm high
Text style	ISO-5	isocp.shx, 15°, 5 mm high
Text style	TB-en	Arial, used by the title block
Dimension style	ISO-25	Text 2.5 mm, arrows 2.5 mm, extension lines 1.25 mm beyond the dimension line and 0.625 mm from the object, dimension lines 3.75 mm apart, 0 decimals
Linetype	Continuous	Solid line
Linetype	DASHED	Dashed
Linetype	DASHDOT	Dash-dot
Linetype	CENTER	Centre line
Linetype	PHANTOM	Phantom line
Linetype	HIDDEN	Hidden line

Sheet and drawing setup

How the sheet is set up, so your own drawings print the same way.

Sheet: ISO A3 landscape, 420 × 297 mm.
Layout: One layout named ISO-A3, plotted at 1:1 on full-bleed A3 media, so the sheet has no printer margin.
Border: 20 mm from the left edge (binding side) and 10 mm from the other edges; the drawing area inside is 390 × 277 mm.
Model space: Units are millimetres. The drawing area is shown at 1:1, so 1 mm in the drawing is 1 mm on paper.
Title block: 160 × 79 mm at the lower right, with a four-line revision table above the company, project, title and approval fields.
Text size: 2.5 mm for labels and notes, 3.5 mm and 5 mm for headings.
Linetype scale: 1, so dashes are sized for plotting at 1:1.
Plot style: None set. Pick the CTB from the ZIP in the page setup for black-and-white plots.

Title block fields

The attributes of the title block. Double-click it to fill them in, or write them for a whole set of drawings with BlockSync.

Attribute	Field on the sheet	Value in this sample
COMPANY	COMPANY	CADXChange
PROJECT	PROJECT	Nuclear Medicine Department
AREA	AREA	Ground floor
SYSTEM	SYSTEM	Architecture
CLIENT	CLIENT	Sample
TITLE	DRAWING TITLE	Nuclear medicine department floor plan, controlled area
DRAWING_NO	DRAWING NO.	A-806
CONTRACT_NO	CONTRACT NO.	—
REV	REV	A
DRAWN	DRAWN	—
CHECKED	CHECKED	—
APPROVED	APPROVED	—
DATE	DATE	2026-10-29
SCALE	SCALE	1:100
SHEET	SHEET	1
SHEET_OF	OF	1

Revision table: R1 to R4, each with REV, DATE, DESCRIPTION and BY (16 attributes, empty in this sample).

Blocks in the drawing

The equipment list of the drawing: block name, symbol and how many times it is placed. BlockSync exports the same list from your own drawings.

Symbol	Block	Placed
Shield wall, concrete 300	RAD_WALL_CONCRETE_300	16
Room tag	ARCH_TAG_ROOM	11
Door, single swing, 900	ARCH_DOOR_SINGLE	9
Waste drum 200 l	RAD_WASTE_DRUM	4
Area zone mark	RAD_ZONE_BUBBLE	4
Area dose rate monitor, wall mounted	RAD_MONITOR_AREA_GAMMA	3
Door, entrance with step, 1000	ARCH_DOOR_ENTRANCE	2
Window, fixed, 1800	ARCH_WINDOW_FIXED_1800	2
Active sink 900 x 600	RAD_SINK_ACTIVE	2
Uptake room recliner	RAD_UPTAKE_CHAIR	2
Decay storage cabinet 1200 x 600	RAD_DECAY_STORE	2
Window, fixed, 900	ARCH_WINDOW_FIXED_900	1
Window, sliding, 1200	ARCH_WINDOW_SLIDING_1200	1
Waiting sofa, 3 seats 2000 x 850	SDV_RC_SOFA_3	1
Coffee table 900 x 500	SDV_RC_COFFEE_TABLE	1
Magazine rack 600 x 300	SDV_RC_MAGAZINE_RACK	1
Waiting chairs, row of 4	SDV_RC_CHAIR_ROW_4	1
Coat stand, round 450	SDV_RC_COAT_STAND	1
Reception desk, 2400	ARCH_RECEPTION	1
Kitchenette 1800 x 600	SDV_BH_KITCHENETTE	1
Fridge 600 x 650	SDV_BH_FRIDGE	1
Staff table 1200 x 800, 4 chairs	SDV_BH_STAFF_TABLE	1
Desk, 1200 x 600, with chair	ARCH_DESK_1200	1
Change barrier bench 1800 x 450	RAD_CHANGE_BARRIER	1
Hand and foot monitor 600 x 800	RAD_MONITOR_HAND_FOOT	1
Step-off pad 900 x 600	RAD_STEP_OFF_PAD	1
Injection chair, shielded	RAD_INJECTION_CHAIR	1
Active patient toilet 700 x 1400	RAD_WC_ACTIVE	1
Wash basin, pedestal, 550	ARCH_BASIN_PEDESTAL	1
Waste storage rack 2400 x 800	RAD_WASTE_RACK	1
Radiopharmacy cabinet, lead lined 1800 x 800	RAD_RADIOPHARMACY_CABINET	1
Radionuclide generator in shield 400	RAD_GENERATOR_SHIELD	1
Hot lab bench with L-block	RAD_HOT_LAB_BENCH	1
Source safe, lead lined 600 x 600	RAD_SOURCE_SAFE	1
Sample counter, gamma well 800 x 700	RAD_GAMMA_COUNTER	1
Computer workstation	ARCH_WORK_WORKSTATION	1
SPECT/CT with bed	RAD_SPECT_CT	1
Radiation warning light	RAD_WARNING_LIGHT	1
Sign, controlled area	RAD_SIGN_CONTROLLED_AREA	1
Sign, radiation area	RAD_SIGN_RADIATION_AREA	1
Sign, radioactive waste	RAD_SIGN_RADIOACTIVE_WASTE	1
Sign, contamination area	RAD_SIGN_CONTAMINATION	1
North arrow	ARCH_NORTH_ARROW	1
Scale bar, 5 m	ARCH_SCALE_BAR	1

Equipment schedule

One row per placed symbol, read from the attributes of the blocks in the drawing: what is shown on the sheet, and the schedule attributes that were filled in but are not shown. BlockSync exports these same attributes from your own drawings.

Tag	Description	Shown on the sheet	Filled in, not shown
D1	Door, entrance with step, 1000ARCH_DOOR_ENTRANCE		WIDTH_MM = 1000HEIGHT_MM = 2100DOOR_TYPE = Entrance doorMATERIAL = TimberFIRE_RATING = NoneFINISH = PaintedHARDWARE_SET = HS-1
D2	Door, single swing, 900ARCH_DOOR_SINGLE		WIDTH_MM = 900HEIGHT_MM = 2100DOOR_TYPE = Single swingMATERIAL = TimberFIRE_RATING = NoneFINISH = PaintedHARDWARE_SET = HS-1
D3	Door, single swing, 900ARCH_DOOR_SINGLE		WIDTH_MM = 900HEIGHT_MM = 2100DOOR_TYPE = Access doorMATERIAL = TimberFIRE_RATING = NoneFINISH = PaintedHARDWARE_SET = HS-1
D4	Door, single swing, 900ARCH_DOOR_SINGLE		WIDTH_MM = 900HEIGHT_MM = 2100DOOR_TYPE = Single swingMATERIAL = TimberFIRE_RATING = NoneFINISH = PaintedHARDWARE_SET = HS-1
D5	Door, single swing, 900ARCH_DOOR_SINGLE		WIDTH_MM = 900HEIGHT_MM = 2100DOOR_TYPE = Single swingMATERIAL = TimberFIRE_RATING = NoneFINISH = PaintedHARDWARE_SET = HS-1
D6	Door, single swing, 900ARCH_DOOR_SINGLE		WIDTH_MM = 900HEIGHT_MM = 2100DOOR_TYPE = Single swingMATERIAL = TimberFIRE_RATING = NoneFINISH = PaintedHARDWARE_SET = HS-1
D7	Door, single swing, 900ARCH_DOOR_SINGLE		WIDTH_MM = 900HEIGHT_MM = 2100DOOR_TYPE = Single swingMATERIAL = TimberFIRE_RATING = NoneFINISH = PaintedHARDWARE_SET = HS-1
D8	Door, single swing, 900ARCH_DOOR_SINGLE		WIDTH_MM = 900HEIGHT_MM = 2100DOOR_TYPE = Single swingMATERIAL = TimberFIRE_RATING = NoneFINISH = PaintedHARDWARE_SET = HS-1
D9	Door, single swing, 900ARCH_DOOR_SINGLE		WIDTH_MM = 900HEIGHT_MM = 2100DOOR_TYPE = Single swingMATERIAL = TimberFIRE_RATING = NoneFINISH = PaintedHARDWARE_SET = HS-1
D10	Door, single swing, 900ARCH_DOOR_SINGLE		WIDTH_MM = 900HEIGHT_MM = 2100DOOR_TYPE = Single swingMATERIAL = TimberFIRE_RATING = NoneFINISH = PaintedHARDWARE_SET = HS-1
D11	Door, entrance with step, 1000ARCH_DOOR_ENTRANCE		WIDTH_MM = 1000HEIGHT_MM = 2100DOOR_TYPE = Lead-lined swing doorMATERIAL = TimberFIRE_RATING = NoneFINISH = PaintedHARDWARE_SET = HS-1
W1	Window, fixed, 1800ARCH_WINDOW_FIXED_1800		WIDTH_MM = 1800HEIGHT_MM = 1350GLAZING = Double, low-E
W2	Window, fixed, 900ARCH_WINDOW_FIXED_900		WIDTH_MM = 900HEIGHT_MM = 1350GLAZING = Double, low-E
W3	Window, fixed, 1800ARCH_WINDOW_FIXED_1800		WIDTH_MM = 1800HEIGHT_MM = 1350GLAZING = Double, low-E
W4	Window, sliding, 1200ARCH_WINDOW_SLIDING_1200		WIDTH_MM = 1200HEIGHT_MM = 1350GLAZING = Double, low-E
C1	Area zone markRAD_ZONE_BUBBLE	ZONE = C1	AREA_CLASS = controlledDOSE_RATE_USV_H = 7.5
C2	Area zone markRAD_ZONE_BUBBLE	ZONE = C2	AREA_CLASS = controlledDOSE_RATE_USV_H = 7.5
C3	Area zone markRAD_ZONE_BUBBLE	ZONE = C3	AREA_CLASS = controlledDOSE_RATE_USV_H = 7.5
S1	Area zone markRAD_ZONE_BUBBLE	ZONE = S1	AREA_CLASS = supervisedDOSE_RATE_USV_H = 7.5
RECEPTION	Room tagARCH_TAG_ROOM	ROOM_NAME = RECEPTION
STAFF ROOM	Room tagARCH_TAG_ROOM	ROOM_NAME = STAFF ROOM
INJECTION	Room tagARCH_TAG_ROOM	ROOM_NAME = INJECTION
UPTAKE 1	Room tagARCH_TAG_ROOM	ROOM_NAME = UPTAKE 1
UPTAKE 2	Room tagARCH_TAG_ROOM	ROOM_NAME = UPTAKE 2
WC	Room tagARCH_TAG_ROOM	ROOM_NAME = WC
WASTE	Room tagARCH_TAG_ROOM	ROOM_NAME = WASTE
CORRIDOR	Room tagARCH_TAG_ROOM	ROOM_NAME = CORRIDOR
HOT LAB	Room tagARCH_TAG_ROOM	ROOM_NAME = HOT LAB
CONTROL	Room tagARCH_TAG_ROOM	ROOM_NAME = CONTROL
SPECT/CT	Room tagARCH_TAG_ROOM	ROOM_NAME = SPECT/CT
Access door D3	Sign, controlled areaRAD_SIGN_CONTROLLED_AREA	DESIGNATION = Access door D3	AREA_CLASS = controlled
SPECT/CT door D11	Sign, radiation areaRAD_SIGN_RADIATION_AREA	DESIGNATION = SPECT/CT door D11	AREA_CLASS = controlled
Waste store door D8	Sign, radioactive wasteRAD_SIGN_RADIOACTIVE_WASTE	DESIGNATION = Waste store door D8	AREA_CLASS = controlled
Injection door D4	Sign, contamination areaRAD_SIGN_CONTAMINATION	DESIGNATION = Injection door D4	AREA_CLASS = controlled

Manufacturer, model and remarks are left empty on every block, ready for your data. The values are examples.

How to use it

Open the sample drawing to see how layers, text and the title block are used, or open it in the browser first, nothing to install.
Start your own drawing from the template (NEW, then pick the DWT file). Copy the CTB file to your plot styles folder if you want black-and-white plots.
Insert blocks from the symbol library into your drawing. The blocks in the sample are copies; they do not change when a library changes.
Double-click the title block to fill it in, then export the equipment list with BlockSync.

Frequently asked questions

Can I use the drawing for a real project?: As a starting point for layout and layers, yes. The ratings, settings and cable sizes are made up, so the diagram has to be checked and changed for your project before it is used for design or construction.
Why are the layers coloured?: Colours and line weights follow the layers: power circuits are red and heavy, control is cyan, signal is green. The plot style table in the ZIP prints everything black and keeps the line weights, so you can plot in black and white as well.
Which CAD programs open it?: The drawing and the template are in AutoCAD 2018 format, which AutoCAD 2018 and later open, and so do other CAD programs that read this format. The browser viewer needs nothing installed.