Scala esterna metallo industriale

1) Preliminary Geometry (to validate on site) Total height: 290 cm Comfortable riser target: 17–18 cm 290 / 17.5 ≈ 16–17 risers Tread depth target: 26–28 cm (outdoor comfort + tile support) Step width: 120 cm (fits 2 × 60×60 cm tiles split) Given your described layout: Flight 1 along the reinforced concrete wall Landing 1 (top) with parapet on two sides Flight 2 to the corner landing Landing 2 resting partially on the embankment (with adjustable feet) Final short flight parallel to boundary wall down to embankment Last run down toward courtyard (opposite direction) ⚠️ The last riser may need fine adjustment (±1–2 cm) to compensate for courtyard slope—preferably handled with adjustable base plates. 2) Structural Concept (All Metal, Modular & Bolted) Primary structure Stringers: 2 side stringers in S235/S275 steel, e.g., 200–220 mm channel or folded plate (8–10 mm). Landings: welded perimeter frame (e.g., 80×40×3 mm RHS) with cross-members @ 30–40 cm centers. Posts/Stiffeners: 80×80×3/4 mm posts at landings and free edges. Tread support (for 2 cm stoneware) Each step: welded frame tray (angle 40×40×4 mm) sized ~120×27 cm. 2–3 crossbars per tread for load distribution. Provision for drainage gaps and slight fall (1–2%). Anti-vibration neoprene strip between steel and tile (optional). Assembly Prefer bolted flanges (M12–M16, 8.8 class) between modules: Flight-to-landing Landing-to-post Stringer-to-wall brackets Enables transport in sections and on-site assembly with your equipment. 3) Anchoring & Supports To reinforced concrete wall: Chemical anchors (e.g., M12/M16 threaded rods) with ETA approval. Wall brackets welded to stringers at 2–3 points per flight. Landing on embankment: Rear posts with base plates 200×200×10 mm. Adjustable leveling nuts. Concrete pads recommended if soil is not compacted. Boundary wall (non-load-bearing): Avoid structural loads; use only lateral stabilizing ties if necessary. 4) Protective Treatments (Exterior) Hot-dip galvanizing (EN ISO 1461) Optional powder coating (polyester, outdoor grade) in matte black/anthracite for industrial look. Seal cut edges after drilling on site with zinc-rich paint. 5) Handrail / Parapet Integrated posts welded to stringers/landings. 40–50 mm round or 40×40 mm square handrail. Infill options (industrial style): Horizontal flat bars Expanded metal mesh Tension cables (clean look) Minimum height: 100–110 cm (check local code). 6) Deliverables You Should Receive From the professional you commission: Dimensioned floor plan & elevations Sections (through flights & landings) Exploded axonometric drawing Complete bolt schedule Steel cutting list (profiles, lengths, thicknesses, quantities) Load summary (live load ≥ 4.0 kN/m² typical residential outdoor stair) Anchor specification sheet 7) Approximate Material Breakdown (Concept Level) Stringers: 3–4 segments total Landings: 2 framed platforms Steps: ~16–17 trays Posts: 6–8 Base plates: 4–6 Bolts: ~80–120 (depending on modular breakdown) 8) Smart Cost Optimizations Use folded plate stringers instead of heavy channels (lighter, cheaper galvanizing). Keep tread trays identical (same depth for all but last step). Design landings as rectangular modules to simplify fabrication. Minimize custom angled cuts. 9) Information Still Needed To finalize proportions: Exact horizontal run available along the black/white wall Exact depth available at corner landing Soil type at embankment Local building code requirements (country/region) Preferred railing style (minimal vs. protective) If you’d like, I can next: Calculate a precise riser/tread distribution Propose a dimensioned layout scheme Or draft a fabrication-ready specification outline you can give directly to your blacksmith.

ID Projek: 40256470