TYPE
MEMBER
SECTION
GOVERNING SPAN
LOAD
BENDING
DEFL
RATIO
OF L/360
OF L/480
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Every beam at its worst span (uniform load plus any hung reaction inside that span, simple-span) and every joist field mid-span. RATIO is span over deflection; OF L/360 is how much of the code minimum is used up — 100% is the limit, under 75% clears the L/480 comfort line too. BENDING is stress against the section's allowable Fb from the lumber stock. Green clears both; amber is code-legal but past L/480 or over 90% bending; red fails. Where a joist field cantilevers, the span shown is the BACK-SPAN and the figures are for it: the overhang adds load to the drop beam it crosses (that is in the beam's plf) but its tip deflection is not checked here — keep every overhang inside a quarter of the back-span and the tip follows.
* No repetitive-member bonus is taken. NDS 4.3.9 lets sawn 2x lumber claim 1.15 × Fb when THREE or more members ≤ 4" thick sit ≤ 24" apart and share load through sheathing — joists at 16" o.c. qualify, a 2-ply beam does not (two plies, not three), and LVL never does. So the joist rows above are ~13% conservative; the beam rows are exactly as stated.