Gambrel segments calculator
Estimate lower and upper gambrel chord segments from the overall span.
What you enter
- Input basis
- Building span (in)
- Lower rise (in)
- Upper rise (in)
- Lower sloping length (in)
- Lower angle (deg)
- Upper angle (deg)
Main results
- Half span
- Lower segment length
- Upper segment length
- Joint engineering handoff note
What it follows
Plain geometry on the span and the two rises you type; no building-code table is looked up. The joint between the two slopes is marked as an engineering handoff.
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.
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