△ Plan-side truss read
Not a deliverable. This is what we read off the architectural set so a review has something to compare a supplier's quote or sealed design set against. It is an estimate — the jack allowance alone runs well under what a sealed set contains — and it is never issued to a truss manufacturer.
Enter the clear span + pitch (pre-filled from the plans where detected) and we dial in the truss
types, counts and board footage from measured plan geometry. Lumber grade, final spans, girder
ply, connector plates and wind loads are designed & issued by the truss manufacturer — always.
✨ AI plan review — preliminary truss zones
50′ × 64′ · 5/12 · sheet p4 · roof: gable33ea
40prelim
2found
7read
◤ Floor trusses pre-filled into the panel below (2 zones @ 16″ OC) — confirm the spans, then compute.
Preliminary truss schedule (primary run)
| Truss type | Count | Span | Note |
|---|---|---|---|
| Common | 31 | 50′ | @ 24" o.c. |
| Gable end | 2 | 50′ | end frames |
| TOTAL | 33 | ||
Span directions
| Zone | Span | Run | Type | Count | Board ft | |
|---|---|---|---|---|---|---|
| Primary | 50′ | 64′ | Fink (common) | 33 | 3,341.2 | Use these → |
| Alt 1 | 64′ | 50′ | Fink (common) | 26 | 3,340.2 | Use these → |
📋 Internal reference — what a quote gets reconciled against
33 roof trusses
Primary span 50′ · Fink (common) (measured from plan)
Pitch 5/12
Counted @ 24″ o.c.
Board footage 3,341.2 BF (on 2x4 chords)
Designed & issued by your truss manufacturer: Lumber grade & species · Final spans & member design · Girder ply · Connector plates — type, sizing & count · Wind loads & uplift reactions · Loading (TC/BC live & dead), design code & load cases · Deflection, camber, bracing locations & the PE seal
Types, counts and board footage are an estimate, kept for one purpose: reconciling a supplier's
quote or sealed set against the plan it was quoted from. It is not sent to a designer and not sold.
The documents we review are the ones your supplier issues.
Floor-plan sheet auto-selected = page 4 (score-based: wall legend + floor-plan title + dimensions). Confirm.
Footprint reduced to bounding rectangle 50.0' x 64.0' from dimension chains — confirm wings/jogs; complex roofs need per-wing geometry.
2 interior bearing line(s) found by vision are treated as ADVISORY — the span is NOT auto-reduced (they may be non-bearing partitions). Confirm a bearing line in Plan Review to split the span into shorter zones.
Preliminary — not for construction. Final member sizing, connector plates, deflection, wind uplift
and the PE seal are determined and sealed by a licensed truss designer.
Span & roof inputs
Pitch is never assumed — confirm it from the plans.Finkcommon
50ft
33@ 24"
3,341.2BF
320LF
Plan-side reference fields
T1 · BF on 2x4 chordsSpan (measured) exact50-0-0
Slope exact5/12
Heel height exact0-3-13
Overall height exact10-8-13
Top chord (w/ tail) exact29.24 ft
Bottom chord exact50.00 ft
Lumber grade & species sealedby truss mfr
Final spans & member design sealedby truss mfr
Girder ply sealedby truss mfr
Connector plates — type, sizing & count sealedby truss mfr
Wind loads & uplift reactions sealedby truss mfr
Loading, design code & load cases sealedby truss mfr
Deflection, camber, bracing & the PE seal sealedby truss mfr
The right column is the truss manufacturer's design output — we hand over the measured
geometry, type, count and board footage so their designer starts from real numbers.
Preliminary — not for construction. Final member sizing, connector plates, deflection, wind uplift
and the PE seal are determined and sealed by a licensed truss designer.
Floor trusses (flat / parallel-chord)
↓ Propose from plan
One span zone per bearing region — count is exact; depth is engineered (by designer).
Use Propose from plan to pre-fill from the footprint, then confirm.
◤ 2 interior bearing(s) detected → 2 span zone(s) proposed. CONFIRM each span before hand-off (a partition can read as a bearing).
Total floor trusses: 40 @ 16" OC · depth ENGINEERED — set by the truss designer
| Type | Count | Span | Note |
|---|---|---|---|
| Floor common | 36 | 41.6' | flat floor truss @ 16" OC |
| Floor gable end | 4 | 41.6' | supported-gable end (wall bears above) |
◤ Floor-truss depth not given — engineered (the designer sets it from span/load).
© 2026 LumberJack AI. Quantities are generated from plans to assist estimating and require user verification before ordering. Truss types, counts, and geometry are preliminary; final design and the PE seal are issued by the licensed truss manufacturer. Terms of Service · Privacy Policy.