Command
| Command | Description |
|---|---|
ATRESIZE_BLOCKS |
Resize selected block definitions to a specified height |
Prerequisites
- FireCAD must be loaded and licensed
- Block references must be selected or available for selection
Overview
The ATRESIZE_BLOCKS command scales selected block definitions to a target height. All geometry within the block definition is scaled proportionally, and all instances of that block in the drawing are updated.
Steps
- Type
ATRESIZE_BLOCKSin the AutoCAD command line - Select the block references you want to resize
- Enter the desired block height when prompted:
- "Enter preferred block height:"
- Default value:
15 - Must be a positive number
- FireCAD calculates the required scale factor and applies it to each block definition
- Attributes are synced to match the new geometry (
ATTSYNCis run automatically) - The drawing regenerates to show the updated blocks
How It Works
For each selected block:
- The block's bounding box is calculated
- A scale factor is computed:
target height / current height - All entities within the block definition are scaled by this factor
- The
ATTSYNCcommand synchronizes attributes across all instances
Important Notes
- This modifies the block definition, not individual block references. All instances of the resized block in the drawing will update.
- The scaling is proportional — width scales by the same factor as height
- Only the height dimension is used as the reference for calculating the scale factor
Tips
- Use this to standardize device block sizes across your drawing
- The default height of 15 works well for most fire alarm device symbols at standard drawing scales
- If you need to resize individual block references (not the definition), use AutoCAD's native scale tools instead
Related Commands
FireCAD is the industry-leading AutoCAD add-in for fire alarm system design — from circuit layout to wire routing to code-compliant reports.
Learn more and get started at getfirecad.com →
Inspect Point Integration — Fire alarm system device lists and bill of materials can be pushed directly from FireCAD into Inspect Point, eliminating manual data entry and ensuring every device is ready for inspection scheduling and ongoing asset management.
Learn more here →