GCL
Ground frame for 10 GCL-NT10/78GDF 640 panels (1×10)
1 row of 10 panels, 6.40 kW. The Solispec engine chose the profiles, the frame pitch and the footings for three snow and wind zones: Kherson has the lowest load of the regional centres, Cherkasy the median, Chernihiv the highest.
- Power
- 6.40kW
- Steel
- 242.7kg
- Posts
- 14
- Bolts
- 96
- Materials
- 35,749₴
- Yield
- 7,288kWh/year
Figures for the median zone (Cherkasy); all three zones are in the table below.
Ground frame designer
Open this frame in the builder
The builder opens with the GCL-NT10/78GDF 640 panel and the 1 × 10 layout; site — Cherkasy. Change the site, the tilt or the profiles and the checks and estimate are recalculated.
- No sign-up
- Snow and wind check
- Drawings and estimate
Three snow and wind zones
The same table designed for three regional centres: with the lowest, the median and the highest combined snow and wind load under DBN V.1.2-2:2006. For another site, open the frame in the builder.
| Parameter | Low loadKherson · S₀ 760 · W₀ 480 | Median loadCherkasy · S₀ 1,520 · W₀ 420 | High loadChernihiv · S₀ 1,720 · W₀ 410 |
|---|---|---|---|
| Posts | Tube 60×60×2 | Tube 60×60×2 | Tube 60×60×2 |
| Rafters | C-channel 60×40×2 | C-channel 60×40×2 | C-channel 60×40×2 |
| Purlins and braces | C-channel 60×40×2 | C-channel 60×40×2 | C-channel 60×40×2 |
| Frames | 6 frames, pitch up to 2,200 mm | 7 frames, pitch up to 1,850 mm | 7 frames, pitch up to 1,850 mm |
| Posts | 12 | 14 | 14 |
| Footings (bored concrete) | 12 pcs, Ø300 mm, depth 900 mm | 14 pcs, Ø300 mm, depth 1,100 mm | 14 pcs, Ø300 mm, depth 1,300 mm |
| Concrete | 0.84 m³ | 1.20 m³ | 1.42 m³ |
| Tilt | 30° | 30° | 30° |
| Panel bottom / post top | 600 / 1,365 mm | 600 / 1,365 mm | 600 / 1,365 mm |
| Panel field size | 11,660 × 1,505 mm | 11,660 × 1,505 mm | 11,660 × 1,505 mm |
| Row spacing between tables (no shade on 21 December) | 5,530 mm at noon · 6,220 mm ±2 h | 6,130 mm at noon · 7,080 mm ±2 h | 6,720 mm at noon · 7,990 mm ±2 h |
| Steel | 214.5 kg | 242.7 kg | 252.8 kg |
| Bolts | M10 — 66, M8 — 22 | M10 — 74, M8 — 22 | M10 — 74, M8 — 22 |
| Panel clamps | end 4, middle 18 | end 4, middle 18 | end 4, middle 18 |
| Materials | 30,810 UAH | 35,749 UAH | 36,893 UAH |
| With installation and delivery | 47,995 UAH | 52,911 UAH | 54,055 UAH |
| Per 1 kW | 7,499 UAH/kW | 8,267 UAH/kW | 8,446 UAH/kW |
| Yield | 1,266 kWh/kW · 8,105 kWh/year | 1,139 kWh/kW · 7,288 kWh/year | 1,043 kWh/kW · 6,676 kWh/year |
| Strength σ/fy | 77% | 76% | 82% |
| Deflection / (L/200) | 67% | 55% | 60% |
| Rafter strength | 15% | 18% | 19% |
| Post utilisation | 6% | 8% | 8% |
| Utilisation | 84% | 51% | 42% |
| Depth vs frost depth | ok | ok | ok |
| Checks overall | with a caution | passes | with a caution |
Checks and cautions
Member utilisation as the engine computes it. Cautions are checks that pass, but with a small margin.
- Embedment, mmThe footing resists wind uplift at above 80 % utilisation, or it is shallower than the frost depth. The soil resistance in the calculation is an estimate — check the soil on site.Kherson: Foundation Ø300 × 900: 0.064 m³ of concrete per post. Wind uplift on the front post ≈ 6.5 kN (with γ=1.5) vs ≈ 7.7 kN (concrete weight + soil friction, estimate) → 84%.
- Max. frame pitch, mmThe purlins between the frames are used above 80 % (strength or deflection): the structure passes, but the margin is small. A shorter frame pitch or a deeper purlin gives more margin.Chernihiv: Frame spacing 1 850 mm, 7 frames. Purlin C-channel 60×40×2: strength 82%, deflection 60% of L/200 (snow on panel 1 106 Pa).
Bill of materials
The parts of one table for the median zone (Cherkasy): mark, name, profile, cut length, quantity.
| Mark | Part | Profile | Length, mm | Quantity |
|---|---|---|---|---|
| П1 | Front post | Tube 60×60×2 | 2,036 | 7 |
| П2 | Rear post | Tube 60×60×2 | 2,490 | 7 |
| Кр1 | Rafter (inclined beam) | C-channel 60×40×2 | 1,565 | 7 |
| Пк1 | Frame strut | C-channel 60×40×2 | 1,021 | 7 |
| Х1 | Longitudinal brace (cross) | C-channel 60×40×2 | 2,016 | 4 |
| Р1 | Purlin (rail) | C-channel 60×40×2 | 6,000 | 1 |
| Р2 | Purlin (rail) | C-channel 60×40×2 | 6,000 | 1 |
| Р3 | Purlin (rail) | C-channel 60×40×2 | 5,660 | 1 |
| Р4 | Purlin (rail) | C-channel 60×40×2 | 5,660 | 1 |
| — | Bolt M10×25 set · purlins, braces, connectors | — | — | 10 |
| — | Bolt M10×80 set · purlin to rafter | — | — | 14 |
| — | Bolt M10×90 set · strut to post — through spacer inserts | — | — | 7 |
| — | Bolt M10×130 set · post–rafter — through spacer inserts | — | — | 28 |
| — | Bolt M10×140 set · strut to rafter — through spacer inserts | — | — | 7 |
| — | Bolt M10×150 set · brace to post — through spacer inserts | — | — | 8 |
| — | End clamp 30 mm | — | — | 4 |
| — | Mid clamp (30–40 mm) | — | — | 18 |
| — | Bolt M8×50 + channel nut | — | — | 22 |
| — | Concrete for 14 posts, Ø300×1100 | — | — | 1.20 m³ |
Profile cutting
16 bars of 6,000 mm, 81.2 m of profile in total.
- Tube 60×60×27 bars
- C-channel 60×40×29 bars
Estimated cost
The engine's materials estimate for the median zone (Cherkasy).
- Materials
- 35,749₴
- With installation and delivery
- 52,911₴
- Per 1 kW
- 8,267UAH/kW
The engine's estimate has 23 lines; the full list is in the builder. Prices are the typical market prices built into the Solispec engine, as of 06.10.2026; no margin, no VAT.
Yield
Yield: 1,139 kWh per 1 kW a year, ≈ 7,288 kWh a year in total (median zone, Cherkasy; tilt 30°, the optimum for the latitude is 35.3°).
A preliminary calculation; a design needs an engineer's check. Snow and wind per DBN V.1.2-2:2006 for the regional centre; profiles, footings and estimate by the Solispec engine 0.12.0.