Seraphim
Ground frame for 10 Seraphim Sable SRP-640-BTZ-BG panels (2×5)
2 rows of 5 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
- 264.9kg
- Posts
- 10
- Bolts
- 84
- Materials
- 32,944₴
- 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 Seraphim Sable SRP-640-BTZ-BG panel and the 2 × 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 | 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 100×50×2.5 |
| Purlins and braces | C-channel 60×40×2 | C-channel 60×40×2 | C-channel 60×40×2 |
| Frames | 4 frames, pitch up to 1,780 mm | 5 frames, pitch up to 1,370 mm | 4 frames, pitch up to 1,780 mm |
| Posts | 8 | 10 | 8 |
| Footings (bored concrete) | 8 pcs, Ø400 mm, depth 1,100 mm | 10 pcs, Ø300 mm, depth 1,100 mm | 8 pcs, Ø350 mm, depth 1,300 mm |
| Concrete | 1.22 m³ | 0.86 m³ | 1.10 m³ |
| Tilt | 30° | 30° | 30° |
| Panel bottom / post top | 600 / 2,347 mm | 600 / 2,347 mm | 600 / 2,329 mm |
| Panel field size | 5,890 × 3,206 mm | 5,890 × 3,206 mm | 5,890 × 3,216 mm |
| Row spacing between tables (no shade on 21 December) | 11,110 mm at noon · 12,490 mm ±2 h | 12,310 mm at noon · 14,210 mm ±2 h | 13,490 mm at noon · 16,030 mm ±2 h |
| Steel | 231.6 kg | 264.9 kg | 257.7 kg |
| Bolts | M10 — 50, M8 — 24 | M10 — 60, M8 — 24 | M10 — 50, M8 — 24 |
| Panel clamps | end 8, middle 16 | end 8, middle 16 | end 8, middle 16 |
| Materials | 30,919 UAH | 32,944 UAH | 39,493 UAH |
| With installation and delivery | 48,149 UAH | 50,124 UAH | 56,723 UAH |
| Per 1 kW | 7,523 UAH/kW | 7,832 UAH/kW | 8,863 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 | 54% | 44% | 79% |
| Deflection / (L/200) | 38% | 24% | 55% |
| Rafter strength | 90% | 94% | 45% |
| Post utilisation | 18% | 18% | 25% |
| Utilisation | 92% | 88% | 78% |
| Depth vs frost depth | ok | ok | ok |
| Checks overall | with a caution | with a caution | passes |
Checks and cautions
Member utilisation as the engine computes it. Cautions are checks that pass, but with a small margin.
- Rafter profileThe rafter is used above 80 %, or the frame's posts stand far apart: the structure passes, but the margin is small.Kherson: Rafter C-channel 60×40×2: span between posts 2 349, cantilever 851 mm → strength 90%.Cherkasy: Rafter C-channel 60×40×2: span between posts 2 349, cantilever 851 mm → strength 94%.
- 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 Ø400 × 1 100: 0.138 m³ of concrete per post. Wind uplift on the front post ≈ 12.3 kN (with γ=1.5) vs ≈ 13.4 kN (concrete weight + soil friction, estimate) → 92%.Cherkasy: Foundation Ø300 × 1 100: 0.078 m³ of concrete per post. Wind uplift on the front post ≈ 8.3 kN (with γ=1.5) vs ≈ 9.5 kN (concrete weight + soil friction, estimate) → 88%.
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 | 2,297 | 5 |
| П2 | Rear post | Tube 60×60×2 | 3,472 | 5 |
| Кр1 | Rafter (inclined beam) | C-channel 60×40×2 | 4,050 | 5 |
| Пк1 | Frame strut | C-channel 60×40×2 | 1,870 | 5 |
| Х1 | Longitudinal brace (cross) | C-channel 60×40×2 | 2,192 | 4 |
| Р1 | Purlin (rail) | C-channel 60×40×2 | 5,890 | 4 |
| — | Bolt M10×25 set · purlins, braces, connectors | — | — | 2 |
| — | Bolt M10×80 set · purlin to rafter | — | — | 20 |
| — | Bolt M10×90 set · strut to post — through spacer inserts | — | — | 5 |
| — | Bolt M10×130 set · post–rafter — through spacer inserts | — | — | 20 |
| — | Bolt M10×140 set · strut to rafter — through spacer inserts | — | — | 5 |
| — | Bolt M10×150 set · brace to post — through spacer inserts | — | — | 8 |
| — | End clamp 30 mm | — | — | 8 |
| — | Mid clamp (30–40 mm) | — | — | 16 |
| — | Bolt M8×50 + channel nut | — | — | 24 |
| — | Concrete for 10 posts, Ø300×1100 | — | — | 0.86 m³ |
Profile cutting
16 bars of 6,000 mm, 90.8 m of profile in total.
- Tube 60×60×25 bars
- C-channel 60×40×211 bars
Estimated cost
The engine's materials estimate for the median zone (Cherkasy).
- Materials
- 32,944₴
- With installation and delivery
- 50,124₴
- Per 1 kW
- 7,832UAH/kW
The engine's estimate has 22 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.