Gable truss calculator
Estimate gable height and top-chord length; web design remains an engineering handoff.
What you enter
- Building span (in)
- Pitch rise (in / 12)
- Top-chord actual depth (in)
- Bottom-chord actual depth (in)
- Stud actual depth (in)
- Stud spacing from center (in O.C.)
- Overhang choice
- Horizontal overhang (in)
- Height above plate (in)
Main results
- Gable height
- Top chord length, each side
- Numbered members with their lengths and cut angles
- Web design handoff note
What it follows
Plain geometry on the span, pitch and member depths you type; no building-code table is looked up. Web design is marked as an engineering handoff, and structural design still requires an engineer.
Every result is marked REVIEW REQUIRED. Illustrative project-planning values only; jurisdiction, species, grade, loads, wet service and current adopted tables require review. Do not use a result directly for permit, purchase, or field use.
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The calculator opens inside the designer, after you sign in.
Accounts are issued by the DeckAndShed team. There is no self-service sign-up.