Vireo

Building Take-Off Program

Floor Span Check · Precision & Speed in Estimating

Stocked 11-7/8 5000 spans are confirmed against the BCI book (★★★★ Four Star, L/960+). Under the framing bill, every span shows two option areas, colored to match the book — a ★★★★ Four Star · BCI zone (our target) and a separate ★★★ Three Star · TJI zone (L/480 — softer floor, re-verify for Four Star). Subfloor moves with the chosen spacing (23/32" T&G OSB; 1-1/8" CDX T&G at 32" o.c.). Spans served from /api/vireo/spans (one source of truth).

The Floor

Clear span (between supports)

Joist run (bearing-wall length)

STOCKED: BCI 11-7/8" 5000 · TARGET: ★★★★ Four Star (L/960+) · ★ marks the loosest spacing that holds.

Spacing — tap to choose

Each tab shows the stocked joist's allowable span + joist count at that spacing. Tap to override the ★ recommendation.

Floor Framing

the take-off — current pick

Item / Size	SKU	Qty

Subfloor moves with the effective spacing: 23/32" T&G OSB glued + nailed, stepped up to 1-1/8" CDX T&G at 32" o.c. (the book wants ≥7/8" rated; we don't stock 7/8"). Sheet count ≈ deck area (span × run) ÷ 32 SF + 10% waste — a draft, not a cut list. Stocked 11-7/8 BCI joists are ordered by length: SKU 11BCI20 … 11BCI44 (2-ft steps); rim board 11RIM. SKU scheme owner-provided — verify, incl. that 20 ft is the shortest stocked. TJI options live in the ★★★ Three Star zone (L/480 — re-verify Four Star in ForteWEB). Pony-wall girder + special-order items are callouts — size/availability per supplier & engineer. Vireo flags & proposes; it does not engineer.