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UAPLDEES
Section of the table from the Solispec engine (median zone — Cherkasy)

LONGi

Ground frame for 60 LONGi Hi-MO 6 LR5-54HTH-435M panels (3×20)

3 rows of 20 panels, 26.10 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
26.10kW
Steel
971.8kg
Posts
22
Bolts
362
Materials
137,792₴
Yield
29,722kWh/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 LONGi Hi-MO 6 LR5-54HTH-435M panel and the 3 × 20 layout; site — Cherkasy. Change the site, the tilt or the profiles and the checks and estimate are recalculated.

Design the frameTilt 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.

ParameterLow loadKherson · S₀ 760 · W₀ 480Median loadCherkasy · S₀ 1,520 · W₀ 420High loadChernihiv · S₀ 1,720 · W₀ 410
PostsTube 60×60×2Tube 60×60×2Tube 60×60×2
RaftersC-channel 80×40×2C-channel 100×50×2.5C-channel 100×50×2.5
Purlins and bracesC-channel 41×41×2.5C-channel 60×40×2C-channel 60×40×2
Frames14 frames, pitch up to 1,740 mm11 frames, pitch up to 2,250 mm11 frames, pitch up to 2,250 mm
Posts282222
Footings (bored concrete)28 pcs, Ø400 mm, depth 1,100 mm22 pcs, Ø400 mm, depth 1,300 mm22 pcs, Ø350 mm, depth 1,500 mm
Concrete4.26 m³3.95 m³3.49 m³
Tilt30°30°30°
Panel bottom / post top600 / 2,505 mm600 / 2,480 mm600 / 2,480 mm
Panel field size23,200 × 3,462 mm23,200 × 3,476 mm23,200 × 3,476 mm
Row spacing between tables (no shade on 21 December)11,680 mm at noon · 13,130 mm ±2 h12,940 mm at noon · 14,950 mm ±2 h14,190 mm at noon · 16,860 mm ±2 h
Steel1,018.8 kg971.8 kg987.7 kg
BoltsM10 — 278, M8 — 126M10 — 236, M8 — 126M10 — 236, M8 — 126
Panel clampsend 12, middle 114end 12, middle 114end 12, middle 114
Materials132,772 UAH137,792 UAH136,485 UAH
With installation and delivery198,444 UAH203,787 UAH202,480 UAH
Per 1 kW7,603 UAH/kW7,808 UAH/kW7,758 UAH/kW
Yield1,266 kWh/kW · 33,054 kWh/year1,139 kWh/kW · 29,722 kWh/year1,043 kWh/kW · 27,226 kWh/year
Strength σ/fy66%83%89%
Deflection / (L/200)57%73%79%
Rafter strength79%70%75%
Post utilisation20%34%36%
Utilisation96%92%91%
Depth vs frost depthokokok
Checks overallwith a cautionwith a cautionwith 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 Ø400 × 1 100: 0.138 m³ of concrete per post. Wind uplift on the front post ≈ 12.8 kN (with γ=1.5) vs ≈ 13.4 kN (concrete weight + soil friction, estimate) → 96%.Cherkasy: Foundation Ø400 × 1 300: 0.163 m³ of concrete per post. Wind uplift on the front post ≈ 14.5 kN (with γ=1.5) vs ≈ 15.8 kN (concrete weight + soil friction, estimate) → 92%.Chernihiv: Foundation Ø350 × 1 500: 0.144 m³ of concrete per post. Wind uplift on the front post ≈ 14.2 kN (with γ=1.5) vs ≈ 15.5 kN (concrete weight + soil friction, estimate) → 91%.
  • 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 2 250 mm, 11 frames. Purlin C-channel 60×40×2: strength 83%, deflection 73% of L/200 (snow on panel 977 Pa).Chernihiv: Frame spacing 2 250 mm, 11 frames. Purlin C-channel 60×40×2: strength 89%, deflection 79% 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.

MarkPartProfileLength, mmQuantity
П1Front postTube 60×60×22,45811
П2Rear postTube 60×60×23,80511
Кр1Rafter (inclined beam)C-channel 100×50×2.54,64611
Пк1Frame strutC-channel 60×40×21,99511
Пк2Front frame strutC-channel 60×40×22,62811
Х1Longitudinal brace (cross)C-channel 60×40×22,9194
Р1Purlin (rail)C-channel 60×40×26,0003
Р2Purlin (rail)C-channel 60×40×26,0003
Р3Purlin (rail)C-channel 60×40×26,0003
Р4Purlin (rail)C-channel 60×40×26,0003
Р5Purlin (rail)C-channel 60×40×26,0003
Р6Purlin (rail)C-channel 60×40×26,0003
Р7Purlin (rail)C-channel 60×40×25,2003
Р8Purlin (rail)C-channel 60×40×25,2003
—Bolt M10×80 / M10×25 set · frame and struts / purlins, braces, connectors——85
—Bolt M10×90 set · strut to post — through spacer inserts——11
—Bolt M10×120 set · purlin to rafter——66
—Bolt M10×130 set · post–rafter, strut to post — through spacer inserts——55
—Bolt M10×140 set · strut to rafter — through spacer inserts——11
—Bolt M10×150 set · brace to post — through spacer inserts——8
—End clamp 30 mm——12
—Mid clamp (30–40 mm)——114
—Bolt M8×50 + channel nut——126
—Concrete for 22 posts, Ø400×1300——3.95 m³

Profile cutting

64 bars of 6,000 mm, 321.7 m of profile in total.

  • Tube 60×60×217 bars
  • C-channel 100×50×2.511 bars
  • C-channel 60×40×236 bars

Estimated cost

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

Materials
137,792₴
With installation and delivery
203,787₴
Per 1 kW
7,808UAH/kW

The engine's estimate has 25 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, ≈ 29,722 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.

Other layouts of this panel

The 3×20 layout with other panels

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