Ground frame for 10 Yingli PANDA 3.0 Pro YL630CF66i/2 panels (1×10)

1 row of 10 panels, 6.30 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: 6.30kW
Steel: 251.0kg
Posts: 14
Bolts: 96
Materials: 35,224₴
Yield: 7,174kWh/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 Yingli PANDA 3.0 Pro YL630CF66i/2 panel and the 1 × 10 layout; site — Cherkasy. Change the site, the tilt or the profiles and the checks and estimate are recalculated.

Design the frame Tilt and row spacing

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	Tube 60×60×2	Tube 60×60×2	Tube 60×60×2
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 / 1,338 mm	600 / 1,338 mm	600 / 1,338 mm
Panel field size	11,660 × 1,459 mm	11,660 × 1,459 mm	11,660 × 1,459 mm
Row spacing between tables (no shade on 21 December)	5,350 mm at noon · 6,010 mm ±2 h	5,920 mm at noon · 6,840 mm ±2 h	6,490 mm at noon · 7,720 mm ±2 h
Steel	221.7 kg	251.0 kg	261.1 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	30,325 UAH	35,224 UAH	36,368 UAH
With installation and delivery	47,505 UAH	52,421 UAH	53,565 UAH
Per 1 kW	7,540 UAH/kW	8,321 UAH/kW	8,502 UAH/kW
Yield	1,266 kWh/kW · 7,979 kWh/year	1,139 kWh/kW · 7,174 kWh/year	1,043 kWh/kW · 6,572 kWh/year
Strength σ/fy	75%	74%	79%
Deflection / (L/200)	65%	54%	58%
Rafter strength	10%	11%	12%
Post utilisation	6%	7%	8%
Utilisation	81%	49%	40%
Depth vs frost depth	ok	ok	ok
Checks overall	with a caution	passes	passes

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 ≈ 6.3 kN (with γ=1.5) vs ≈ 7.7 kN (concrete weight + soil friction, estimate) → 81%.

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	2,022	7
П2	Rear post	Tube 60×60×2	2,463	7
Кр1	Rafter (inclined beam)	Tube 60×60×2	1,522	7
Пк1	Frame strut	C-channel 60×40×2	998	7
Х1	Longitudinal brace (cross)	C-channel 60×40×2	2,007	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 M10×140 / M10×80 set · frame and struts / purlins, braces, connectors	—	—	59
—	Bolt M10×150 set · brace to post, strut to rafter — through spacer inserts	—	—	15
—	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, 80.4 m of profile in total.

Tube 60×60×29 bars
C-channel 60×40×27 bars

Estimated cost

The engine's materials estimate for the median zone (Cherkasy).

Materials: 35,224₴
With installation and delivery: 52,421₴
Per 1 kW: 8,321UAH/kW

Prices are the typical market prices built into the Solispec engine, as of 06.10.2026; no margin, no VAT.

All 20 lines of the engine's estimate, with prices

Item	Quantity	Price, UAH	Sum, UAH
Tube 60×60×2, stock length 6 000 mm	9 bar	210	11,340
C-channel 60×40×2, stock length 6 000 mm	7 bar	230	9,660
C-channel connector (splice plate L 300)	2 pcs	90	180
Bolt M10×140 cl. 8.8 set — frame, struts	43 pcs	22	946
Bolt M10×80 cl. 8.8 set — purlins, braces, connectors	24 pcs	22	528
Bolt M10×150 cl. 8.8 set — strut to rafter, brace to post — through spacer inserts	15 pcs	27	405
End clamp 30 mm	4 pcs	35	140
Mid clamp (30–40 mm)	18 pcs	32	576
Bolt M8×50 A2 + spring channel nut M8	25 pcs	14	350
Post base anchor pin (M10 / rebar Ø12)	14 pcs	20	280
Borehole casing (roofing felt / PVC, 300 mm)	14 pcs	60	840
Crushed stone 20–40 for the bottom of the boreholes	0.10 m³	900	90
Earth electrode: 2 rods Ø16×1.5 m + strip 40×4	1 set	1,500	1,500
Wire PV-3 6 mm² green-yellow	31 m	35	1,085
Module earthing clip (under the clamp)	10 pcs	20	200
Cable clip, stainless	30 pcs	5	150
Zinc paint / cold galvanising spray 400 ml	1 pcs	350	350
Concrete M200 for posts	1.20 m³	3,800	4,560
Rebar Ø10 (4 bars per post)	73 m	28	2,044
Spacer inserts / packs — pieces of the same profile (from offcuts): 4 × 71 mm, 7 × 70 mm, 4 × 30 mm, 7 × 10 mm	22 pcs	0	0
Materials			35,224

Yield

Yield: 1,139 kWh per 1 kW a year, ≈ 7,174 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.