Farm building 15 × 20 m or Farm building 15 × 20 m, open?
Both examples are generated with the same parameters; only the walls differs. Quantities include waste, no prices – the generator shows the price from the catalogue. A preliminary result, not a design.
Key facts
| Closed | Open walls | Difference | |
|---|---|---|---|
| Footprint | 15 × 20 m | 15 × 20 m | |
| Built-up area | 300 m² | 300 m² | = |
| Wall height | 5 m | 5 m | = |
| Ridge height | 7.01 m | 7.01 m | = |
| Labour hours | 624 h | 504 h | −120 h (-19 %) |
| Material lines | 28 | 22 | −6 |
| Materials (incl. waste, incl. VAT) | €35,154.61 | €26,965.65 | −€8,188.96 (-23 %) |
Preliminary prices from catalogue lt-2026-10 (2026-10-25). This is an example, not an offer: supplier prices vary and labour depends on your rate – you enter it and your own materials in the generator. Catalogue prices are still being verified.
Structural engineer approval required
Material quantities
Lines that differ come first; “—” means the material is not used in that variant.
| Material | Unit | Closed | Open walls | Difference |
|---|---|---|---|---|
| Wind barrier membraneWalls | m² | 400.57 | — | −400.57 |
| Rectangular tube 60×40×2 (gate frame)Walls | m | 220.5 | — | −220.5 |
| Trapezoidal polycarbonate, clear (light band)External cladding | m² | 47.08 | — | −47.08 |
| Wall steel sheet T20External cladding | m² | 381.53 | — | −381.53 |
| Sectional overhead gateOpenings | m² | 16 | — | −16 |
| Rectangular tube 60×40×2 (gate frame)Openings | m | 12.81 | — | −12.81 |
| Self-drilling screws 35 mmFasteners | pcs | 6,105 | 2,740 | −3,365 |
| Column anchor bolt setFoundation | set | 14 | 14 | = |
| Concrete C20/25Foundation | m³ | 3.76 | 3.76 | = |
| Formwork (boards / panels, rental)Foundation | m² | 19.71 | 19.71 | = |
| Crushed stone / gravel 0–32Floor | m³ | 64.47 | 64.47 | = |
| Concrete C20/25Floor | m³ | 46.15 | 46.15 | = |
| GeotextileFloor | m² | 322.34 | 322.34 | = |
| Rebar mesh 150x150Floor | m² | 322.34 | 322.34 | = |
| Column base plate with stiffeners (I-section)Walls | pcs | 14 | 14 | = |
| Wind bracing rod Ø16 with turnbucklesWalls | m | 59.4 | 59.4 | = |
| Lattice column (80x80x3 chords, 40x40x2 diagonals)Walls | m | 71.4 | 71.4 | = |
| Roof underlayRoof | m² | 365.96 | 365.96 | = |
| Roof steel sheet T35Roof | m² | 402.42 | 402.42 | = |
| Wind bracing rod Ø16 with turnbucklesRoof | m | 79.78 | 79.78 | = |
| Z-section purlin 150Roof | m | 235.1 | 235.1 | = |
| Truss joint set (post connections, apex, bolts)Roof | set | 5 | 5 | = |
| Lattice truss rafter, galvanised (chords and diagonals)Roof | m | 82.37 | 82.37 | = |
| Downpipe 100 mmRainwater drainage | m | 26.25 | 26.25 | = |
| Gutter 150 mmRainwater drainage | m | 43.26 | 43.26 | = |
| Gutter bracketRainwater drainage | pcs | 69 | 69 | = |
| Anchor bolt M12Fasteners | pcs | 72 | 72 | = |
| Post connectorFasteners | pcs | 15 | 15 | = |
Start with “Closed”Start with “Open walls”
All comparisons · Find a specialist to prepare or check the design
Rule set lt-v1, catalogue lt-2026-10.