beams
- Geometric consumption
- 0.18 m3
- Required parts
- 12 $count
- Purchased stock
- 2 piece
- Cutting offcuts
- 0.179 m3
- Kerf waste
- 0.001 m3
- Additional reserve
- 1 piece
Greenhouse planner
Sketch layout and preliminary material estimate
Structural solutions require separate verification.
Editable educational example. All dimensions and assumptions can be changed. This is not a ready construction design.
v1.0.0 · Geometry checked · Quantity checked · Engineering unverified
- Reported footprint
- 12 m²
- Usable area
- 12 m²
- Covering area
- 41.819 m²
- Frame count
- 5
- Roof area
- 13.241 m²
- Roof high point
- 2.699 m
Material quantities
Required parts are counts; geometric timber quantities are volumes. Stock and reserve are separate pieces. Area and volume rows are alternative views: price only one basis.
PRELIMINARY ESTIMATE
rafters
- Geometric consumption
- 0.124 m3
- Required parts
- 10 $count
- Purchased stock
- 2 piece
- Cutting offcuts
- 0.056 m3
- Kerf waste
- 0 m3
- Additional reserve
- 1 piece
Inspect 2 stock pieces and cutting
framing
- Geometric consumption
- 0.17 m3
- Required parts
- 14 $count
- Purchased stock
- 4 piece
- Cutting offcuts
- 0.07 m3
- Kerf waste
- 0 m3
- Additional reserve
- 1 piece
Inspect 4 stock pieces and cutting
greenhouse-covering-polycarbonate
- Geometric consumption
- 28.578 m2
- Required parts
- 20 $count
- Purchased stock
- 20 piece
- Cutting offcuts
- 25.403 m2
- Kerf waste
- NOT_CALCULATED
- Additional reserve
- 1 piece
Roof / panel layout
4 × 1; Overlap area: 0 m²; Offcuts: 3.52 m²
4 × 1; Overlap area: 0 m²; Offcuts: 3.52 m²
3 × 2; Overlap area: 0 m²; Offcuts: 9.182 m²
3 × 2; Overlap area: 0 m²; Offcuts: 9.182 m²
roof-covering
- Geometric consumption
- 13.241 m2
- Required parts
- 8 $count
- Purchased stock
- 8 piece
- Cutting offcuts
- 2.759 m2
- Kerf waste
- NOT_CALCULATED
- Additional reserve
- 1 piece
Roof / panel layout
4 × 1; Overlap area: 1.24 m²; Offcuts: 1.38 m²
4 × 1; Overlap area: 1.24 m²; Offcuts: 1.38 m²
cladding-fasteners
- Geometric consumption
- 336 count
- Required parts
- 336 $count
- Purchased stock
- 336 piece
- Cutting offcuts
- NOT_CALCULATED
- Kerf waste
- NOT_CALCULATED
- Additional reserve
- 17 piece
roof-fasteners
- Geometric consumption
- 64 count
- Required parts
- 64 $count
- Purchased stock
- 64 piece
- Cutting offcuts
- NOT_CALCULATED
- Kerf waste
- NOT_CALCULATED
- Additional reserve
- 4 piece
Incomplete cost and uncalculated work
No prices entered.
No market prices; costs omit labor, delivery, utilities and unpriced items.
- Anchoring, heating, irrigation, ventilation sizing and thermal performance
- Curved panel nesting and arc bending fabrication
- Foundation, footing and anchor engineering
- Snow, wind, seismic loads and member sizing
- Connection capacity and fastening design
- Electrical systems and drainage engineering
- Labor, delivery, unpriced materials
- Post/beam/rafter connections and floor-panel fasteners
- Railing infill, privacy-wall backing and roof longitudinal overhang support
Template and calculation assumptions
- Member spacing includes both endpoints. Different profiles use independent stock pools.
- Openings subtract cladding, not structural members. Header/jamb framing is not designed.
- Fasteners follow editable per-connection/per-panel assumptions; preliminary quantities only.
- Frames include both endpoints; the final bay may be shorter.
- Semicircular roof: radius = width / 2; arc length = π × radius. Covering uses the analytic extrusion; profile SVG uses 32 segments.
- Panel grids use fixed orientation on rectangular bounding faces, retain opening offcuts and do not reuse trim. Curved sheet counts are NOT_CALCULATED.
- Roof slope is measured across width; ridge runs along length. Overhang extends projected roof on all sides.
- Board counts include a full-width final board for trimming. Panel grids do not reuse offcuts between planes.
- Cladding fasteners use a rectangular fixing grid at the editable stud/fixing spacing in both directions, including endpoints on full wall bounding boxes; openings are not deducted. This is a conservative preliminary assumption, not connection design.
Compare valid variants (3)
GRH-01
Reported footprint: 12 m²
Covering area: 41.819 m²
Frame count: 5
Usable area: 12 m²
Roof area: 13.241 m²
beams: 0.18 m3; Stock: 2; reserve 1 piece; Offcuts: 0.179
rafters: 0.124 m3; Stock: 2; reserve 1 piece; Offcuts: 0.056
framing: 0.17 m3; Stock: 4; reserve 1 piece; Offcuts: 0.07
greenhouse-covering-polycarbonate: 28.578 m2; Stock: 20; reserve 1 piece; Offcuts: 25.403
roof-covering: 13.241 m2; Stock: 8; reserve 1 piece; Offcuts: 2.759
cladding-fasteners: 336 count; Stock: 336; reserve 17 piece; Offcuts: NOT_CALCULATED
roof-fasteners: 64 count; Stock: 64; reserve 4 piece; Offcuts: NOT_CALCULATED
Partial cost: Unpriced
GRH-02
Reported footprint: 12 m²
Covering area: 49.513 m²
Frame count: 5
Usable area: 12 m²
Roof area: 13.241 m²
beams: 0.12 m3; Stock: 1; reserve 1 piece; Offcuts: 0.06
rafters: 0.124 m3; Stock: 2; reserve 1 piece; Offcuts: 0.056
framing: 0.205 m3; Stock: 4; reserve 1 piece; Offcuts: 0.035
greenhouse-covering-polycarbonate: 36.272 m2; Stock: 24; reserve 2 piece; Offcuts: 27.131
roof-covering: 13.241 m2; Stock: 8; reserve 1 piece; Offcuts: 2.759
cladding-fasteners: 392 count; Stock: 392; reserve 20 piece; Offcuts: NOT_CALCULATED
roof-fasteners: 64 count; Stock: 64; reserve 4 piece; Offcuts: NOT_CALCULATED
Partial cost: Unpriced
GRH-03
Reported footprint: 12 m²
Covering area: 52.398 m²
Frame count: 5
Usable area: 12 m²
Roof area: 18.85 m²
beams: 0.3 m3; Stock: 2; reserve 1 piece; Offcuts: 0.059
rafters: 0.177 m3; Stock: 3; reserve 1 piece; Offcuts: 0.093
framing: 0.17 m3; Stock: 4; reserve 1 piece; Offcuts: 0.07
greenhouse-covering-polycarbonate: 33.549 m2; Stock: NOT_CALCULATED; reserve 1.677 m2; Offcuts: 0
roof-covering: 18.85 m2; Stock: NOT_CALCULATED; reserve 0.942 m2; Offcuts: NOT_CALCULATED
cladding-fasteners: 392 count; Stock: 392; reserve 20 piece; Offcuts: NOT_CALCULATED
Partial cost: Unpriced
Example and dimensions
Editable example: 4 × 3 m, 2 m knee walls, 1 m frame spacing, zero overhang, 0.8 × 1.9 m door and 12 m profile stock. Semicircular roof radius is 1.5 m and arc length is 1.5π m.
Required inputs
Length, width, eave height, roof shape and slope or consistent ridge height, frame spacing, profile sections, stock lengths, perimeter base rail, polycarbonate, glass or film, doors and vents, usable and physical panel dimensions, waste and user prices.
Formulas and assumptions
Frames start at zero, include spacing multiples and finish at length; the last bay may be shorter. GRH-01 uses straight walls and a gable roof; GRH-02 uses a mono-pitch roof; GRH-03 uses a semicircle on straight knee walls. Radius = width / 2; arc = π × radius; barrel covering = length × arc; two semicircular end infills total π × radius². Covering includes walls and ends with openings deducted. Rail segments follow frame bays. Flat panels use fixed rectangular bounding grids without offcut reuse. Film and curved sheet counts are NOT_CALCULATED.
Geometric consumption, parts, stock, offcuts, kerf and user reserve are separate. Stock without a layout algorithm is NOT_CALCULATED. Fasteners are preliminary estimates from explicit spacing and connection-count assumptions. Prices come from the user; labor, delivery, utilities and unpriced items are excluded.
Limitations
No wind or snow design, anchoring engineering, heating, irrigation, ventilation sizing, thermal certification or foundation engineering. Arc stock length is analytic developed length; bending, fittings and curved panel nesting require separate fabrication planning.
Related calculators
These links do not select structural solutions. Foundation dimensions require independent specification.