Calculate I-beam and H-beam weight per metre and total weight for ISMB, ISWB, ISHB, and wide flange sections. Complete IS 808 reference tables for all standard Indian beam sizes with kg/m and total weight output.
Select beam type and size, enter length to instantly calculate weight per metre and total beam weight
Standard weight per metre (kg/m) for ISMB, ISLB, ISWB, and ISHB sections as per IS 808. Select tab for each beam type.
ISMB – Indian Standard Medium Weight Beam. Most widely used I-beam in Indian structural fabrication, bridges, and industrial buildings. Standard: IS 808.
| Section | Depth (mm) | Flange Width (mm) | Web Thickness (mm) | Flange Thickness (mm) | Weight (kg/m) | Area (cm²) |
|---|---|---|---|---|---|---|
| ISMB 100 | 100 | 75 | 4.0 | 7.2 | 8.90 | 11.35 |
| ISMB 125 | 125 | 75 | 4.4 | 7.6 | 13.10 | 16.60 |
| ISMB 150 | 150 | 80 | 4.8 | 7.6 | 14.90 | 19.00 |
| ISMB 175 | 175 | 90 | 5.5 | 8.6 | 19.30 | 24.62 |
| ISMB 200 | 200 | 100 | 5.7 | 10.8 | 25.40 | 32.33 |
| ISMB 225 | 225 | 110 | 6.5 | 11.8 | 31.20 | 39.72 |
| ISMB 250 | 250 | 125 | 6.9 | 12.5 | 37.30 | 47.55 |
| ISMB 300 | 300 | 140 | 7.5 | 12.4 | 46.10 | 58.80 |
| ISMB 350 | 350 | 140 | 8.1 | 14.2 | 52.40 | 66.71 |
| ISMB 400 | 400 | 140 | 8.9 | 16.0 | 61.50 | 78.46 |
| ISMB 450 | 450 | 150 | 9.4 | 17.4 | 72.40 | 92.27 |
| ISMB 500 | 500 | 180 | 10.2 | 17.2 | 86.90 | 110.74 |
| ISMB 550 | 550 | 190 | 11.2 | 19.3 | 103.70 | 132.11 |
| ISMB 600 | 600 | 210 | 12.0 | 20.8 | 122.60 | 156.21 |
* Highlighted rows (ISMB 200, 350, 500) are most commonly stocked by Indian steel suppliers and SAIL/TATA stockists. Standard: IS 808:1989 (BIS). Grade: IS 2062 E250. Density: 7.85 g/cm³.
ISLB – Indian Standard Light Weight Beam. Lighter flanges and thinner web compared to ISMB at same depth. Used where lower dead load is preferred.
| Section | Depth (mm) | Flange Width (mm) | Web Thickness (mm) | Flange Thickness (mm) | Weight (kg/m) | Area (cm²) |
|---|---|---|---|---|---|---|
| ISLB 75 | 75 | 50 | 3.7 | 5.0 | 5.80 | 7.42 |
| ISLB 100 | 100 | 50 | 4.0 | 6.4 | 8.00 | 10.21 |
| ISLB 125 | 125 | 75 | 4.4 | 6.5 | 11.90 | 15.12 |
| ISLB 150 | 150 | 80 | 4.8 | 6.8 | 14.20 | 18.08 |
| ISLB 175 | 175 | 90 | 5.1 | 7.4 | 16.70 | 21.30 |
| ISLB 200 | 200 | 100 | 5.5 | 7.3 | 19.80 | 25.26 |
| ISLB 225 | 225 | 100 | 5.8 | 8.6 | 23.50 | 29.93 |
| ISLB 250 | 250 | 125 | 6.1 | 8.2 | 27.90 | 35.53 |
| ISLB 275 | 275 | 140 | 6.4 | 9.9 | 33.90 | 43.20 |
| ISLB 300 | 300 | 150 | 6.7 | 9.4 | 37.70 | 48.08 |
| ISLB 325 | 325 | 165 | 7.0 | 9.8 | 43.10 | 54.90 |
| ISLB 350 | 350 | 165 | 7.4 | 11.4 | 49.50 | 63.01 |
| ISLB 400 | 400 | 165 | 8.0 | 12.5 | 56.90 | 72.43 |
| ISLB 450 | 450 | 170 | 8.6 | 13.4 | 65.30 | 83.13 |
| ISLB 500 | 500 | 180 | 9.2 | 14.1 | 75.00 | 95.50 |
| ISLB 550 | 550 | 190 | 9.9 | 15.0 | 86.30 | 109.97 |
| ISLB 600 | 600 | 210 | 10.5 | 15.5 | 99.50 | 126.75 |
* ISLB is lighter than ISMB at the same depth due to thinner flanges and web. Highlighted rows are most commonly available in Indian stockyards. Standard: IS 808:1989 (BIS).
ISWB – Indian Standard Wide Flange Beam. Wide flanges give better lateral stability. Used for bridge girders, heavy industrial structures, crane girders.
| Section | Depth (mm) | Flange Width (mm) | Web Thickness (mm) | Flange Thickness (mm) | Weight (kg/m) | Area (cm²) |
|---|---|---|---|---|---|---|
| ISWB 150 | 150 | 100 | 5.4 | 7.0 | 17.01 | 21.67 |
| ISWB 175 | 175 | 125 | 5.8 | 7.4 | 22.10 | 28.15 |
| ISWB 200 | 200 | 140 | 6.1 | 9.0 | 28.80 | 36.71 |
| ISWB 225 | 225 | 150 | 6.4 | 9.9 | 33.90 | 43.23 |
| ISWB 250 | 250 | 200 | 6.7 | 9.7 | 36.70 | 46.75 |
| ISWB 300 | 300 | 200 | 7.1 | 10.0 | 48.10 | 61.33 |
| ISWB 350 | 350 | 200 | 8.0 | 12.5 | 60.80 | 77.47 |
| ISWB 400 | 400 | 200 | 8.8 | 13.0 | 66.70 | 85.01 |
| ISWB 450 | 450 | 200 | 9.8 | 15.4 | 79.40 | 101.15 |
| ISWB 500 | 500 | 250 | 9.9 | 14.7 | 94.50 | 120.38 |
| ISWB 550 | 550 | 250 | 10.5 | 17.3 | 112.50 | 143.35 |
| ISWB 600 | 600 | 250 | 11.2 | 17.8 | 133.70 | 170.38 |
* ISWB is the wide flange version — heavier at same depth due to wider flanges. Highlighted rows are most stocked by Indian structural steel suppliers. Standard: IS 808:1989.
ISHB – Indian Standard H-Beam (Column Section). Near-equal flange and web depth — designed for column applications with bi-axial loading. Equivalent to Universal Column (UC) in UK/European standards.
| Section | Depth (mm) | Flange Width (mm) | Web Thickness (mm) | Flange Thickness (mm) | Weight (kg/m) | Area (cm²) |
|---|---|---|---|---|---|---|
| ISHB 150 | 150 | 150 | 5.4 | 9.0 | 27.10 | 34.48 |
| ISHB 150-1 | 150 | 150 | 6.9 | 9.0 | 30.60 | 38.98 |
| ISHB 175 | 175 | 175 | 6.0 | 9.5 | 32.70 | 41.67 |
| ISHB 175-1 | 175 | 175 | 7.4 | 9.5 | 36.50 | 46.47 |
| ISHB 200 | 200 | 200 | 6.1 | 9.0 | 37.30 | 47.54 |
| ISHB 200-1 | 200 | 200 | 7.8 | 9.0 | 40.00 | 50.94 |
| ISHB 225 | 225 | 225 | 6.5 | 9.9 | 43.10 | 54.92 |
| ISHB 225-1 | 225 | 225 | 8.0 | 9.9 | 46.80 | 59.66 |
| ISHB 250 | 250 | 250 | 6.9 | 9.7 | 51.00 | 64.96 |
| ISHB 250-1 | 250 | 250 | 8.8 | 9.7 | 54.70 | 69.71 |
| ISHB 300 | 300 | 250 | 7.6 | 10.6 | 58.80 | 74.85 |
| ISHB 300-1 | 300 | 250 | 9.4 | 10.6 | 63.00 | 80.25 |
| ISHB 350 | 350 | 250 | 8.1 | 11.6 | 67.40 | 85.91 |
| ISHB 400 | 400 | 250 | 8.8 | 12.7 | 77.40 | 98.66 |
| ISHB 450 | 450 | 250 | 9.8 | 13.7 | 87.20 | 111.14 |
| ISHB 500 | 500 | 250 | 10.2 | 14.7 | 95.00 | 121.20 |
* ISHB sections have near-equal flange width and depth — designed for column use. Highlighted rows are most commonly used in Indian portal frame and industrial column applications. "-1" suffix indicates heavier variant at same depth. Standard: IS 808:1989.
How to manually calculate I-beam weight per metre and total weight using the IS 808 section properties
Beam: ISMB 300 → Weight = 46.10 kg/m
Length: 6 m
Qty: 1 nos
Total = 46.10 × 6 × 1 = 276.60 kg
In tonnes: 276.60 ÷ 1000 = 0.277 MT
Beam: ISMB 500 → Weight = 86.90 kg/m
Length: 9 m per beam
Qty: 20 nos
Total = 86.90 × 9 × 20 = 15,642 kg
In tonnes: 15,642 ÷ 1000 = 15.64 MT
Section: ISHB 250 → Weight = 51.00 kg/m
Column height: 4.5 m
Qty: 8 columns
Rate: ₹62/kg
Total weight = 51.00 × 4.5 × 8 = 1,836 kg
Cost = 1,836 × 62 = ₹1,13,832
ISWB 350 → Area = 77.47 cm²
kg/m = 77.47 × 0.785 = 60.81 kg/m
(matches IS 808 table value of 60.80 kg/m ✔)
This confirms: any beam weight can be derived from its cross-sectional area × 0.785
Key differences between the four standard Indian structural beam sections and when to use each
Where ISMB, ISWB, and ISHB beams are commonly used in Indian construction and industrial projects
ISMB 200–600 are the primary beams for portal frame industrial sheds across India. ISMB 400–500 are commonly used as rafters and ISHB 200–300 as columns for spans up to 30 m in steel-framed warehouses and factory buildings.
ISMB floor beams support concrete deck slabs in composite construction. ISHB columns handle multi-floor axial loads with bi-directional moment capacity. Commonly used in parking structures, commercial buildings, and steel-framed residential projects in Tier-1 Indian cities.
ISWB 400–600 and ISMB 500–600 are used as primary girders in steel road bridges, railway bridges, and flyover decks in India. Wide flange ISWB sections are preferred for bridges due to better lateral stability under dynamic loading.
ISWB and ISMB beams serve as crane runway girders in Indian manufacturing plants, shipyards, and heavy engineering workshops. Crane beam design follows IS 807 and requires fatigue-resistant welded connections to columns.
ISMB 100–300 are widely used as lintels over door and window openings in masonry construction across India. ISMB 200–350 form mezzanine floor beams in factories, warehouses, and commercial spaces with light to medium imposed loads.
ISMB and ISLB sections are used in lattice transmission line towers and telecom towers across India as leg and bracing members. ISLB is preferred in towers where weight minimisation is critical to reduce foundation loads in soft-soil areas.
Practical advice for structural engineers, fabricators, and procurement teams ordering beams in India
ISMB, ISWB, and ISHB sections are supplied by SAIL and TATA in standard mill lengths of 10 m, 11 m, 12 m, or 13 m depending on the section size. Always plan your cutting schedule to minimise offcuts — small sections (ISMB 100–250) may also be available in 6 m lengths from stockists.
All structural beams for buildings and bridges in India must conform to IS 2062 Grade E250 (Fe 410) — yield strength 250 MPa minimum. Always request a Mill Test Certificate (MTC) confirming the grade. Avoid secondary or re-rolled beams from unverified sources for structural applications — no IS marking means no grade guarantee.
Weigh a random sample of 5–10 beams on delivery and compare to the calculated weight from the IS 808 table. Under-weight beams indicate under-rolled sections or wrong grade. A 3–5% shortfall vs theoretical weight triggers a quality rejection in most Indian IS-certified fabrication shops.
Structural beams from Indian mills arrive with mill scale and surface rust. Always shot blast to Sa 2.5 (IS 1477 / ISO 8501-1) and apply one coat of red oxide or zinc phosphate primer before fabrication for outdoor or exposed applications. Mill scale traps moisture — unpainted scale accelerates corrosion from the inside joint interfaces.
When calculating total beam requirement for a project, add 5% wastage allowance to the net quantity for cuts, offcuts, and any re-work. For projects with many short lengths (lintels, mezzanine beams), add 8–10%. It is always cheaper to buy slightly more upfront than to reorder a partial tonne at spot rate.
A common Indian site mistake is using ISMB sections as columns instead of ISHB. ISMB has a very narrow flange relative to depth — it has poor bending resistance about the minor (weak) axis and buckles easily as a column. For columns under any bi-axial loading, always use ISHB or SHS (square hollow section) — never ISMB as a primary column in a moment frame.
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Common questions about I-beam and H-beam weight calculation and selection in India