REC
Ground frame for 5 REC Alpha Pro MG REC610AA Pro MG (HJT, bifacial) panels (1×5)
1 row of 5 panels, 3.05 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
- 3.05kW
- Steel
- 145.2kg
- Posts
- 8
- Bolts
- 62
- Materials
- 22,733₴
- Yield
- 3,473kWh/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 REC Alpha Pro MG REC610AA Pro MG (HJT, bifacial) panel and the 1 × 5 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 | C-channel 80×40×2 | Tube 60×60×2 | Tube 60×60×2 |
| Rafters | C-channel 80×40×2 | 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 | 4 frames, pitch up to 2,040 mm | 4 frames, pitch up to 2,040 mm | 4 frames, pitch up to 2,040 mm |
| Posts | 8 | 8 | 8 |
| Footings (bored concrete) | 8 pcs, Ø300 mm, depth 900 mm | 8 pcs, Ø300 mm, depth 1,100 mm | 8 pcs, Ø300 mm, depth 1,300 mm |
| Concrete | 0.56 m³ | 0.68 m³ | 0.81 m³ |
| Tilt | 30° | 30° | 30° |
| Panel bottom / post top | 600 / 1,262 mm | 600 / 1,271 mm | 600 / 1,271 mm |
| Panel field size | 6,745 × 1,347 mm | 6,745 × 1,342 mm | 6,745 × 1,342 mm |
| Row spacing between tables (no shade on 21 December) | 4,880 mm at noon · 5,490 mm ±2 h | 5,410 mm at noon · 6,250 mm ±2 h | 5,930 mm at noon · 7,050 mm ±2 h |
| Steel | 121.1 kg | 145.2 kg | 151.0 kg |
| Bolts | M10 — 50, M8 — 12 | M10 — 50, M8 — 12 | M10 — 50, M8 — 12 |
| Panel clamps | end 4, middle 8 | end 4, middle 8 | end 4, middle 8 |
| Materials | 21,929 UAH | 22,733 UAH | 23,395 UAH |
| With installation and delivery | 30,824 UAH | 31,628 UAH | 32,290 UAH |
| Per 1 kW | 10,106 UAH/kW | 10,370 UAH/kW | 10,587 UAH/kW |
| Yield | 1,266 kWh/kW · 3,863 kWh/year | 1,139 kWh/kW · 3,473 kWh/year | 1,043 kWh/kW · 3,182 kWh/year |
| Strength σ/fy | 59% | 82% | 88% |
| Deflection / (L/200) | 47% | 66% | 71% |
| Rafter strength | 8% | 16% | 18% |
| Post utilisation | 13% | 7% | 8% |
| Utilisation | 69% | 49% | 41% |
| Depth vs frost depth | ok | ok | ok |
| Checks overall | passes | with a caution | with a caution |
Checks and cautions
Member utilisation as the engine computes it. Cautions are checks that pass, but with a small margin.
- 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.Cherkasy: Frame spacing 2 040 mm, 4 frames. Purlin C-channel 60×40×2: strength 82%, deflection 66% of L/200 (snow on panel 977 Pa).Chernihiv: Frame spacing 2 040 mm, 4 frames. Purlin C-channel 60×40×2: strength 88%, deflection 71% 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 | 1,986 | 4 |
| П2 | Rear post | Tube 60×60×2 | 2,396 | 4 |
| Кр1 | Rafter (inclined beam) | C-channel 60×40×2 | 1,415 | 4 |
| Пк1 | Frame strut | C-channel 60×40×2 | 940 | 4 |
| Х1 | Longitudinal brace (cross) | C-channel 60×40×2 | 2,168 | 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 | 745 | 1 |
| Р4 | Purlin (rail) | C-channel 60×40×2 | 745 | 1 |
| — | Bolt M10×25 set · purlins, braces, connectors | — | — | 10 |
| — | Bolt M10×80 set · purlin to rafter | — | — | 8 |
| — | Bolt M10×90 set · strut to post — through spacer inserts | — | — | 4 |
| — | Bolt M10×130 set · post–rafter — through spacer inserts | — | — | 16 |
| — | Bolt M10×140 set · strut to rafter — through spacer inserts | — | — | 4 |
| — | Bolt M10×150 set · brace to post — through spacer inserts | — | — | 8 |
| — | End clamp 30 mm | — | — | 4 |
| — | Mid clamp (30–40 mm) | — | — | 8 |
| — | Bolt M8×50 + channel nut | — | — | 12 |
| — | Concrete for 8 posts, Ø300×1100 | — | — | 0.68 m³ |
Profile cutting
10 bars of 6,000 mm, 49.1 m of profile in total.
- Tube 60×60×24 bars
- C-channel 60×40×26 bars
Estimated cost
The engine's materials estimate for the median zone (Cherkasy).
- Materials
- 22,733₴
- With installation and delivery
- 31,628₴
- Per 1 kW
- 10,370UAH/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, ≈ 3,473 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.