Tata Shaktee GC Sheet Weight Per Piece
A standard Tata Shaktee GC corrugated sheet (0.47 mm thick, 8 ft length) weighs approximately 9.0 kg per piece, calculated using sheet area × steel density (7850 kg/m³) per IS 277. Weight scales directly with thickness — a 0.63 mm sheet in the same 8 ft length weighs 12.1 kg, while a thinner 0.35 mm sheet weighs 6.7 kg.
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XXXXXXXXXX ca-pub-XXXXXXXXXXQuick Reference — Most Common Size (0.47 mm)
- 8 ft (2.438 m): 9.0 kg per sheet
- 10 ft (3.048 m): 11.2 kg per sheet
- 12 ft (3.658 m): 13.5 kg per sheet
- 14 ft (4.267 m): 15.7 kg per sheet
- 16 ft (4.877 m): 18.0 kg per sheet
Tata Shaktee GC Sheet Weight Chart (All Sizes)
The table below shows weight per piece in kilograms for every standard thickness and length combination available from Tata Shaktee. Values are calculated per IS 277:2003 using a sheet width of 1.0 m and steel density of 7850 kg/m³.
| Thickness (mm) | 8 ft | 10 ft | 12 ft | 14 ft | 16 ft |
|---|---|---|---|---|---|
| 0.35 | 6.70 | 8.37 | 10.05 | 11.72 | 13.40 |
| 0.40 | 7.66 | 9.57 | 11.49 | 13.40 | 15.31 |
| 0.45 | 8.61 | 10.77 | 12.92 | 15.07 | 17.23 |
| 0.47 ★ most common | 9.00 | 11.24 | 13.49 | 15.74 | 18.00 |
| 0.50 | 9.57 | 11.96 | 14.36 | 16.75 | 19.14 |
| 0.55 | 10.53 | 13.16 | 15.80 | 18.42 | 21.07 |
| 0.63 | 12.06 | 15.07 | 18.09 | 21.10 | 24.12 |
All weights are theoretical values per IS 277. Actual weight may vary by ±2–3% due to zinc coating class and mill tolerance. The 0.47 mm row is the most widely sold thickness in India.
How GC Sheet Weight Is Calculated
According to IS 277:2003 (Galvanised Steel Sheets — Hot-Dip and Electrolytic — Plain and Corrugated), the weight of a GC sheet is derived from the base steel mass. The standard formula is:
IS 277 Weight Formula
- Weight (kg) = Length (m) × Width (m) × Thickness (m) × 7850
- Steel density = 7850 kg/m³
- Sheet width = 1.0 m (nominal overall width, standard GC profile)
- Thickness in metres = thickness (mm) ÷ 1000
Example — 0.47 mm sheet, 12 ft (3.658 m) length:
Weight = 3.658 × 1.0 × 0.00047 × 7850 = 13.49 kg
Zinc coating note: IS 277 specifies a minimum zinc coating of 120 g/m² for Class 1 sheets. Zinc adds approximately 0.1–0.2 kg per 12 ft sheet — within tolerance, so the steel-only formula is used for procurement calculations.
Effective cover width: The formula uses the 1.0 m overall width. For counting how many sheets cover a roof, use the effective cover width of 838 mm (accounts for the 162 mm side lap per IS 277).
Which Thickness Should I Buy?
Tata Shaktee GC sheets are available in seven standard thicknesses. The right choice depends on your application, local wind speed, purlin spacing, and budget.
0.35 mm and 0.40 mm — Economy grades for short spans (up to 1.2 m purlin spacing) and sheltered locations. Common in temporary sheds and budget housing.
0.45 mm — Intermediate grade with better rigidity. Used in rural residential roofing with purlin spacing up to 1.4 m.
0.47 mm — The most popular thickness in India. Default specification for residential and industrial shed roofing, stocked by virtually every dealer. Suitable for purlin spacing up to 1.5 m per IS 875 Part 3.
0.50 mm — Marginally stronger than 0.47 mm. Preferred where purlin spacing reaches 1.6 m or for moderate wind zones.
0.55 mm and 0.63 mm — Heavy-duty grades for industrial buildings, coastal and cyclone-prone areas, or long-span roofs. The 0.63 mm grade is specified by structural engineers for factory roofs where maintenance foot traffic is expected. Both comply with IS 875 Part 3 for high wind zones.
As a rule, do not go below 0.47 mm for any permanent structure. If your engineer has specified a thickness, follow that specification.
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XXXXXXXXXX ca-pub-XXXXXXXXXXCalculate How Many Sheets You Need
Use the free Roof Sheet Calculator to get an exact sheet count, ridge caps, screws, and total weight for your shed or building.
Frequently Asked Questions
What is the weight of a Tata Shaktee 8 ft GC sheet?
A Tata Shaktee GC sheet in 8 ft (2.438 m) length weighs between 6.7 kg (0.35 mm) and 12.1 kg (0.63 mm) depending on thickness. The most commonly used 0.47 mm grade weighs 9.0 kg for the 8 ft length.
How much does a 12 ft GC sheet weigh?
A standard 12 ft (3.658 m) Tata Shaktee GC sheet weighs approximately 10.1 kg for 0.35 mm thickness and 18.1 kg for 0.63 mm. The popular 0.47 mm grade weighs 13.5 kg in the 12 ft length — the most frequently specified size for residential shed roofing.
What thicknesses does Tata Shaktee GC sheet come in?
Tata Shaktee GC corrugated sheets are available in seven standard thicknesses: 0.35 mm, 0.40 mm, 0.45 mm, 0.47 mm, 0.50 mm, 0.55 mm, and 0.63 mm. The 0.47 mm thickness is the most widely stocked and the default specification for most residential and light industrial applications.
How do I calculate the number of GC sheets needed for a roof?
Divide your roof length by the effective cover width of the sheet (838 mm or 0.838 m for standard GC profile) to get the number of sheets per row. Add 10% for wastage and end overlaps. For an automatic calculation including ridge caps, purlin count, and screw quantity, use our Roof Sheet Calculator.
Does the IS 277 weight chart apply to other brands?
Yes. The IS 277 formula gives theoretical weights that are the same for any GC sheet of the same nominal thickness, regardless of brand — all compliant sheets use the same steel density (7850 kg/m³) and the same zinc coating class. Minor variations of 1–3% exist between brands due to zinc coating class and mill tolerance.
What is the difference between GC sheet and colour coated sheet weight?
GC sheets have a zinc coating only. Colour coated sheets have an additional paint layer (typically 20–25 microns) adding approximately 0.03–0.06 kg per sheet — negligible for practical purposes. For the same nominal thickness, GC and colour coated sheets weigh virtually the same.