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Shediy
DIY shed construction app
9 followers
DIY shed construction app
9 followers
Free wooden garden shed calculator: structure sizing (Eurocode 5 / NDS), metering, shopping list and illustrated assembly instructions. FR/EN, metric/imperial.
Does the calculator account for different timber species and their specific strength classes, or is it locked to generic softwood defaults for the Eurocode 5 side?
@asya766251 Great question — honest answer:
On the Eurocode 5 side, the structural checks are currently anchored to strength class C24. That's deliberate: virtually all off-the-shelf structural softwood in French/EU timber yards is graded and stamped C24, and the tool states this assumption explicitly (buy C24-marked lumber). The species picker (spruce/fir, Douglas fir, Scots pine) currently drives self-weight (density), durability/treatment recommendations and pricing — plus a small span adjustment for Douglas fir — but it doesn't yet unlock other strength classes, so C16/C18 or C30/glulam aren't selectable today.
Funnily enough, the US/NDS side is ahead on this: it uses species-specific reference design values (SPF, Doug Fir-Larch, Hem-Fir, Southern Pine, #2 grade — Fb, Fv, Fc, E, Emin each).
A strength-class selector for the Eurocode side (C16 → C30, possibly GL24h for long lintels) is a natural next step — the engine is parametrized on strength values internally, so it's on the roadmap rather than a rewrite. Worth adding: Shediy is an indicative sizing aid for small garden structures, not a stamped design, which is why we bias toward the conservative, most-common case.
If you have a concrete use case (e.g. locally sawn C18 timber), I'd genuinely like to hear it — it helps me prioritize.
@asya766251 you asked, we shipped 🚀 The Eurocode side now has a strength class selector (C16 / C18 / C24 / C30, EN 338 values) — it drives stud buckling capacity, beam bending/deflection and rafter sizing. Pick C16 and watch the cut list upgrade your rafters a size; C24 stays the default since that's what EU timber yards stock. Live at shediy.app — thanks for the push!
Love that it bakes Eurocode 5 straight into the calculator instead of making you cross-reference norms yourself. The illustrated assembly guide is a nice touch for someone like me who can never remember which beam goes where.
finally a shed calculator that actually does the math for eurocode 5 instead of vague guesswork, and the assembly diagrams look clearer than the ones i scribbled last summer.