Seraphim
Ground frame for 16 Seraphim Sable SRP-620-BTC-BG panels (2×8)
2 rows of 8 panels, 9.92 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
- 9.92kW
- Steel
- 368.1kg
- Posts
- 14
- Bolts
- 132
- Materials
- 45,977₴
- Yield
- 11,297kWh/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-620-BTC-BG panel and the 2 × 8 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 80×40×2 |
| Purlins and braces | C-channel 60×40×2 | C-channel 60×40×2 | C-channel 60×40×2 |
| Frames | 6 frames, pitch up to 1,760 mm | 7 frames, pitch up to 1,480 mm | 6 frames, pitch up to 1,760 mm |
| Posts | 12 | 14 | 12 |
| Footings (bored concrete) | 12 pcs, Ø400 mm, depth 1,100 mm | 14 pcs, Ø300 mm, depth 1,100 mm | 12 pcs, Ø300 mm, depth 1,300 mm |
| Concrete | 1.83 m³ | 1.20 m³ | 1.21 m³ |
| Tilt | 30° | 30° | 30° |
| Panel bottom / post top | 600 / 2,287 mm | 600 / 2,287 mm | 600 / 2,278 mm |
| Panel field size | 9,352 × 3,102 mm | 9,352 × 3,102 mm | 9,352 × 3,107 mm |
| Row spacing between tables (no shade on 21 December) | 10,730 mm at noon · 12,070 mm ±2 h | 11,890 mm at noon · 13,740 mm ±2 h | 13,040 mm at noon · 15,490 mm ±2 h |
| Steel | 334.8 kg | 368.1 kg | 340.5 kg |
| Bolts | M10 — 86, M8 — 36 | M10 — 96, M8 — 36 | M10 — 86, M8 — 36 |
| Panel clamps | end 8, middle 28 | end 8, middle 28 | end 8, middle 28 |
| Materials | 44,931 UAH | 45,977 UAH | 50,422 UAH |
| With installation and delivery | 70,868 UAH | 71,859 UAH | 76,359 UAH |
| Per 1 kW | 7,144 UAH/kW | 7,244 UAH/kW | 7,697 UAH/kW |
| Yield | 1,266 kWh/kW · 12,563 kWh/year | 1,139 kWh/kW · 11,297 kWh/year | 1,043 kWh/kW · 10,348 kWh/year |
| Strength σ/fy | 51% | 49% | 75% |
| Deflection / (L/200) | 36% | 29% | 52% |
| Rafter strength | 83% | 95% | 82% |
| Post utilisation | 16% | 18% | 23% |
| Utilisation | 87% | 91% | 89% |
| Depth vs frost depth | ok | ok | ok |
| Checks overall | with a caution | 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.
- 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 2 276, cantilever 824 mm → strength 83%.Cherkasy: Rafter C-channel 60×40×2: span between posts 2 276, cantilever 824 mm → strength 95%.Chernihiv: Rafter C-channel 80×40×2: span between posts 2 276, cantilever 824 mm → strength 82%.
- 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 ≈ 11.6 kN (with γ=1.5) vs ≈ 13.4 kN (concrete weight + soil friction, estimate) → 87%.Cherkasy: Foundation Ø300 × 1 100: 0.078 m³ of concrete per post. Wind uplift on the front post ≈ 8.6 kN (with γ=1.5) vs ≈ 9.5 kN (concrete weight + soil friction, estimate) → 91%.Chernihiv: Foundation Ø300 × 1 300: 0.092 m³ of concrete per post. Wind uplift on the front post ≈ 9.9 kN (with γ=1.5) vs ≈ 11.2 kN (concrete weight + soil friction, estimate) → 89%.
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 | 2,274 | 7 |
| П2 | Rear post | Tube 60×60×2 | 3,412 | 7 |
| Кр1 | Rafter (inclined beam) | C-channel 60×40×2 | 3,924 | 7 |
| Пк1 | Frame strut | C-channel 60×40×2 | 1,818 | 7 |
| Х1 | Longitudinal brace (cross) | C-channel 60×40×2 | 2,220 | 4 |
| Р1 | Purlin (rail) | C-channel 60×40×2 | 6,000 | 2 |
| Р2 | Purlin (rail) | C-channel 60×40×2 | 6,000 | 2 |
| Р3 | Purlin (rail) | C-channel 60×40×2 | 3,352 | 2 |
| Р4 | Purlin (rail) | C-channel 60×40×2 | 3,352 | 2 |
| — | Bolt M10×25 set · purlins, braces, connectors | — | — | 18 |
| — | Bolt M10×80 set · purlin to rafter | — | — | 28 |
| — | 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 | — | — | 8 |
| — | Mid clamp (30–40 mm) | — | — | 28 |
| — | Bolt M8×50 + channel nut | — | — | 36 |
| — | Concrete for 14 posts, Ø300×1100 | — | — | 1.20 m³ |
Profile cutting
22 bars of 6,000 mm, 126.3 m of profile in total.
- Tube 60×60×27 bars
- C-channel 60×40×215 bars
Estimated cost
The engine's materials estimate for the median zone (Cherkasy).
- Materials
- 45,977₴
- With installation and delivery
- 71,859₴
- Per 1 kW
- 7,244UAH/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, ≈ 11,297 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.