Instructions:
- Click on canvas to draw deck outline
- Click near start point to close shape
- Set edge types if attaching to walls/posts
- Configure joist spacing and timber sizes
- Click "Generate Structure"
- Add manholes or steps if needed
- View materials list below
Drawing Status
Click to start drawing deck outline
Settings
Canvas Scale
Grid size: 100mm squares
Major lines every: 1000mm
Major lines every: 1000mm
Structural Design
C24 allows longer spans but costs ~30% more than C16
Foundation Heights
Note: Heights below are for finished deck surface
Finished deck surface height (includes joists + decking)
Finished deck surface height (includes joists + decking)
Edge Attachment Types
Default: All edges are floating
Ledger boards eliminate need for pedestals along that edge
Posts provide support at regular intervals
Floating - Rim joist + adjustable pedestals
Ledger boards eliminate need for pedestals along that edge
Posts provide support at regular intervals
Floating - Rim joist + adjustable pedestals
Additional Features
Export & Save
Deck outline
Joists
Noggins
⚠️ Important Safety Notice
Design Guidance Only: This tool provides structural design guidance based on established engineering principles but should not replace professional advice.
Professional Verification Required: All designs must be verified by a qualified structural engineer before construction.
Local Building Codes: Check your local building regulations, codes, and permit requirements. Building standards vary by location.
Soil Conditions: Foundation requirements depend on local soil conditions and must be assessed by professionals.
Limitation of Liability: Users assume all responsibility for design accuracy and construction safety.