Aiko
Ground frame for 40 Aiko Comet 2N AIKO-A620-MAH72Mw panels (4×10)
4 rows of 10 panels, 24.80 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
- 24.80kW
- Steel
- 1,417.1kg
- Posts
- 24
- Bolts
- 306
- Materials
- 178,176₴
- Yield
- 28,242kWh/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 Aiko Comet 2N AIKO-A620-MAH72Mw panel and the 4 × 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 80×80×3 | Tube 80×80×3 | Tube 80×80×3 |
| Rafters | C-channel 100×50×2.5 | C-channel 100×50×2.5 | C-channel 100×50×2.5 |
| Purlins and braces | C-channel 41×41×2.5 | C-channel 60×40×2 | C-channel 60×40×2 |
| Frames | 9 frames, pitch up to 1,400 mm | 8 frames, pitch up to 1,600 mm | 8 frames, pitch up to 1,600 mm |
| Posts | 27 | 24 | 24 |
| Footings (bored concrete) | 27 pcs, Ø500 mm, depth 1,500 mm | 24 pcs, Ø500 mm, depth 1,500 mm | 24 pcs, Ø500 mm, depth 1,500 mm |
| Concrete | 8.75 m³ | 7.78 m³ | 7.78 m³ |
| Tilt | 30° | 30° | 30° |
| Panel bottom / post top | 600 / 4,370 mm | 600 / 4,354 mm | 600 / 4,354 mm |
| Panel field size | 11,660 × 6,712 mm | 11,660 × 6,722 mm | 11,660 × 6,722 mm |
| Row spacing between tables (no shade on 21 December) | 20,980 mm at noon · 23,590 mm ±2 h | 23,250 mm at noon · 26,850 mm ±2 h | 25,480 mm at noon · 30,280 mm ±2 h |
| Steel | 1,561.7 kg | 1,417.1 kg | 1,417.1 kg |
| Bolts | M10 — 240, M8 — 88 | M10 — 218, M8 — 88 | M10 — 218, M8 — 88 |
| Panel clamps | end 16, middle 72 | end 16, middle 72 | end 16, middle 72 |
| Materials | 192,004 UAH | 178,176 UAH | 178,176 UAH |
| With installation and delivery | 254,658 UAH | 240,868 UAH | 240,868 UAH |
| Per 1 kW | 10,268 UAH/kW | 9,712 UAH/kW | 9,712 UAH/kW |
| Yield | 1,266 kWh/kW · 31,407 kWh/year | 1,139 kWh/kW · 28,242 kWh/year | 1,043 kWh/kW · 25,870 kWh/year |
| Strength σ/fy | 62% | 60% | 64% |
| Deflection / (L/200) | 43% | 37% | 40% |
| Rafter strength | 56% | 84% | 90% |
| Post utilisation | 23% | 34% | 37% |
| Post utilisation П3 | 7% | 11% | 11% |
| Utilisation | 90% | 90% | 88% |
| Depth vs frost depth | ok | ok | ok |
| Bolt utilisation | 35% | 50% | 54% |
| Plate section | 6% | 8% | 8% |
| Not included | engineer to check | engineer to check | engineer to check |
| 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.
- 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 Ø500 × 1 500: 0.295 m³ of concrete per post. Wind uplift on the front post ≈ 21.6 kN (with γ=1.5) vs ≈ 24.0 kN (concrete weight + soil friction, estimate) → 90%.Cherkasy: Foundation Ø500 × 1 500: 0.295 m³ of concrete per post. Wind uplift on the front post ≈ 21.6 kN (with γ=1.5) vs ≈ 24.0 kN (concrete weight + soil friction, estimate) → 90%.Chernihiv: Foundation Ø500 × 1 500: 0.295 m³ of concrete per post. Wind uplift on the front post ≈ 21.1 kN (with γ=1.5) vs ≈ 24.0 kN (concrete weight + soil friction, estimate) → 88%.
- Stock length, mmKherson: Rafter 8 512 mm is longer than the 6 000 mm stock length — 2 pieces: Кр1а 3 520, Кр1б 4 992 mm. Splice — plate Н1 L 300 mm of the same profile, back to back, 2+2 bolts M10 cl. 8.8, at 3 520 mm from the lower end of the rafter, where the moment is small. Bolt: 6.33 kN vs 18.00 kN (35%), plate 6%. Rafter splice — engineer to check: the plate's eccentricity, the C-channel's torsion and the axial force are not included.Cherkasy: Rafter 8 512 mm is longer than the 6 000 mm stock length — 2 pieces: Кр1а 4 980, Кр1б 3 532 mm. Splice — plate Н1 L 300 mm of the same profile, back to back, 2+2 bolts M10 cl. 8.8, at 4 980 mm from the lower end of the rafter, where the moment is small. Bolt: 9.06 kN vs 18.00 kN (50%), plate 8%. Rafter splice — engineer to check: the plate's eccentricity, the C-channel's torsion and the axial force are not included.Chernihiv: Rafter 8 512 mm is longer than the 6 000 mm stock length — 2 pieces: Кр1а 4 980, Кр1б 3 532 mm. Splice — plate Н1 L 300 mm of the same profile, back to back, 2+2 bolts M10 cl. 8.8, at 4 980 mm from the lower end of the rafter, where the moment is small. Bolt: 9.68 kN vs 18.00 kN (54%), plate 8%. Rafter splice — engineer to check: the plate's eccentricity, the C-channel's torsion and the axial force are not included.
- Rafter profileThe rafter is used above 80 %, or the frame's posts stand far apart: the structure passes, but the margin is small.Cherkasy: Rafter · C-channel 100×50×2.5 · 3 posts, spans between posts 3 022 mm, cantilever 1 234 mm — continuous beam on 3 supports → strength 84%.Chernihiv: Rafter · C-channel 100×50×2.5 · 3 posts, spans between posts 3 022 mm, cantilever 1 234 mm — continuous beam on 3 supports → strength 90%.
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 80×80×3 | 2,857 | 8 |
| П2 | Rear post | Tube 80×80×3 | 5,879 | 8 |
| П3 | Middle post | Tube 80×80×3 | 4,368 | 8 |
| Кр1а | Rafter (inclined beam) | C-channel 100×50×2.5 | 4,980 | 8 |
| Кр1б | Rafter (inclined beam) | C-channel 100×50×2.5 | 3,532 | 8 |
| Н1 | Rafter splice plate | C-channel 100×50×2.5 | 300 | 8 |
| Пк1 | Frame strut | C-channel 60×40×2 | 3,645 | 8 |
| Пк2 | Front frame strut | C-channel 60×40×2 | 2,306 | 8 |
| Х1 | Longitudinal brace (cross) | C-channel 60×40×2 | 4,039 | 4 |
| Р1 | Purlin (rail) | C-channel 60×40×2 | 6,000 | 4 |
| Р2 | Purlin (rail) | C-channel 60×40×2 | 6,000 | 4 |
| Р3 | Purlin (rail) | C-channel 60×40×2 | 5,660 | 4 |
| Р4 | Purlin (rail) | C-channel 60×40×2 | 5,660 | 4 |
| — | Bolt M10×100 / M10×25 set · frame and struts / purlins, braces, connectors | — | — | 42 |
| — | Bolt M10×120 set · purlin to rafter | — | — | 64 |
| — | Bolt M10×140 set · strut to post | — | — | 8 |
| — | Bolt M10×150 set · post–rafter, strut to rafter — through spacer inserts | — | — | 56 |
| — | Bolt M10×160 set · brace to post — through spacer inserts | — | — | 8 |
| — | Bolt M10×200 set · strut to rafter — through spacer inserts | — | — | 8 |
| — | Bolt M10×25 set · rafter splice (plate Н1) | — | — | 32 |
| — | End clamp 33 mm | — | — | 16 |
| — | Mid clamp (30–40 mm) | — | — | 72 |
| — | Bolt M8×50 + channel nut | — | — | 88 |
| — | Concrete for 24 posts, Ø500×1500 | — | — | 7.78 m³ |
Profile cutting
64 bars of 6,000 mm, 332.4 m of profile in total.
- Tube 80×80×320 bars
- C-channel 100×50×2.516 bars
- C-channel 60×40×228 bars
Estimated cost
The engine's materials estimate for the median zone (Cherkasy).
- Materials
- 178,176₴
- With installation and delivery
- 240,868₴
- Per 1 kW
- 9,712UAH/kW
Prices are the typical market prices built into the Solispec engine, as of 06.10.2026; no margin, no VAT.
All 26 lines of the engine's estimate, with prices
| Item | Quantity | Price, UAH | Sum, UAH |
|---|---|---|---|
| Tube 80×80×3, stock length 6 000 mm | 20 bar | 420 | 50,400 |
| C-channel 100×50×2.5, stock length 6 000 mm | 16 bar | 380 | 36,480 |
| C-channel 60×40×2, stock length 6 000 mm | 28 bar | 230 | 38,640 |
| C-channel connector (splice plate L 300) | 8 pcs | 90 | 720 |
| Bolt M10×100 cl. 8.8 set — frame, struts | 8 pcs | 22 | 176 |
| Bolt M10×25 cl. 8.8 set — purlins, braces, connectors | 34 pcs | 22 | 748 |
| Bolt M10×120 cl. 8.8 set — purlin to rafter | 86 pcs | 27 | 2,322 |
| Bolt M10×140 cl. 8.8 set — strut to post | 8 pcs | 27 | 216 |
| Bolt M10×150 cl. 8.8 set — post–rafter, strut to rafter — through spacer inserts | 56 pcs | 27 | 1,512 |
| Bolt M10×160 cl. 8.8 set — brace to post — through spacer inserts | 8 pcs | 27 | 216 |
| Bolt M10×200 cl. 8.8 set — strut to rafter — through spacer inserts | 8 pcs | 27 | 216 |
| Bolt M10×25 cl. 8.8 set — rafter splice (plate Н1) | 32 pcs | 22 | 704 |
| End clamp 33 mm | 16 pcs | 35 | 560 |
| Mid clamp (30–40 mm) | 72 pcs | 32 | 2,304 |
| Bolt M8×50 A2 + spring channel nut M8 | 97 pcs | 14 | 1,358 |
| Post base anchor pin (M10 / rebar Ø12) | 24 pcs | 20 | 480 |
| Borehole casing (roofing felt / PVC, 300 mm) | 24 pcs | 60 | 1,440 |
| Crushed stone 20–40 for the bottom of the boreholes | 0.47 m³ | 900 | 423 |
| Earth electrode: 2 rods Ø16×1.5 m + strip 40×4 | 1 set | 1,500 | 1,500 |
| Wire PV-3 6 mm² green-yellow | 33 m | 35 | 1,155 |
| Module earthing clip (under the clamp) | 40 pcs | 20 | 800 |
| Cable clip, stainless | 120 pcs | 5 | 600 |
| Zinc paint / cold galvanising spray 400 ml | 3 pcs | 350 | 1,050 |
| Concrete M200 for posts | 7.78 m³ | 3,800 | 29,564 |
| Rebar Ø10 (4 bars per post) | 164 m | 28 | 4,592 |
| Spacer inserts / packs — pieces of the same profile (from offcuts): 16 × 80 mm, 4 × 61 mm, 4 × 20 mm | 24 pcs | 0 | 0 |
| Materials | 178,176 | ||
Yield
Yield: 1,139 kWh per 1 kW a year, ≈ 28,242 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.