ISA 100×75×10 Weight, Dimensions and IS 808 Properties
ISA 100×75×10 weighs 12.9 kg per metre as per IS 808:1989.
- One 6-metre length weighs 77.4 kg · one 12-metre length weighs 154.8 kg
- Long leg 100 mm · short leg 75 mm · thickness 10 mm · area 16.48 cm²
- Maximum principal moment of inertia Iuu = 196.41 cm⁴
ISA 100×75×10 is a standard unequal-leg angle in IS 808:1989. At 12.9 kg/m with a 100 mm long leg and 75 mm short leg, it is used for heavily loaded connection angles where the 10 mm thickness ensures adequate net section at bolt holes, staircase stringer main angles, and truss chord connections in heavy-span roof structures.
ISA 100×75×10 Weight Calculator
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ISA 100×75×10 — Weight Calculator
IS 808:1989 Dimensions and Sectional Properties
| Property | Symbol | Unit | Value |
|---|---|---|---|
| Long leg | A | mm | 100 |
| Short leg | B | mm | 75 |
| Thickness | t | mm | 10 |
| Cross-sectional area | A | cm² | 16.48 |
| Mass per metre | — | kg/m | 12.9 |
| Centroid from back of long leg | Cxx | cm | 2.36 |
| Centroid from back of short leg | Cyy | cm | 1.66 |
| Moment of inertia (x–x) | Ixx | cm⁴ | 168.8 |
| Moment of inertia (y–y) | Iyy | cm⁴ | 62.08 |
| Moment of inertia (u–u, max principal) | Iuu | cm⁴ | 196.41 |
| Moment of inertia (v–v, min principal) | Ivv | cm⁴ | 34.47 |
| Elastic section modulus (x–x) | Zxx | cm³ | 24.55 |
| Elastic section modulus (y–y) | Zyy | cm³ | 11.5 |
| Radius of gyration (u–u) | ruu | cm | 3.45 |
| Radius of gyration (v–v) | rvv | cm | 1.45 |
| Tangent of principal axis angle | tan α | — | 0.527 |
Dimensions and properties as per IS 808:1989 (reaffirmed 2021). x–x axis is parallel to the long leg; y–y axis is parallel to the short leg; u–u is the maximum principal axis at angle α to x–x. Mass tolerance: ±3% per piece per IS 808.
Common Applications of ISA 100×75×10
ISA 100×75×10 is used for heavily loaded connection angles where the 10 mm thickness ensures adequate net section at bolt holes, staircase stringer main angles, and truss chord connections in heavy-span roof structures. General steel merchants and angle stockists carry this size in IS 2062 E250 grade in 6 m and 12 m lengths. JSPL, SAIL, and RINL (Vizag Steel) all roll this designation to IS 808:1989 as standard stock.
Worked Example
A fabricator in Pune needs 10 truss chord connection angles on a 30 m span roof truss using ISA 100×75×10, each 500 mm long. Total length = 10 × 0.5 = 5.0 m. Weight = 5.0 × 12.9 = 64.5 kg. At ₹63,000 per tonne (Pune, May 2026), material cost is approximately ₹4,063 before cutting charges.
Related ISA Unequal Angle Sections
Compare with adjacent sizes: ISA 100×75×8 (10.5 kg/m) · ISA 120×80×8 (12.1 kg/m). For all ISA unequal angles see the Section Reference Library →
Frequently Asked Questions
What is the weight of ISA 100×75×10 per metre?
ISA 100×75×10 weighs 12.9 kg per metre as specified in IS 808:1989. For a standard 6-metre length, the total weight is 77.4 kg. For a 12-metre length, total weight is 154.8 kg.
ISA 100×75×10 ka weight per meter kitna hota hai?
IS 808:1989 standard ke according, ISA 100×75×10 ka weight 12.9 kg/m hota hai. 6 metre ki ek length ka total weight 77.4 kg hoga. Zyada accurate calculation ke liye upar diya gaya calculator use karein.
What are the dimensions of ISA 100×75×10?
ISA 100×75×10 per IS 808:1989 has a long leg of 100 mm, short leg of 75 mm, thickness of 10 mm, and cross-sectional area of 16.48 cm².
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