Fiberglass I-beam 300×150×15 mm
Dimensions, section properties computed from the geometry, allowable loads by span and EN 13706 E23 mechanical data for the I 300×150×15 pultruded profile.
- Model
- I 300×150×15
- EN 13706 grade
- E23
- Published mass
- 13.5 kg/m
- Section area
- 8550 mm²
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Cross-section and section properties
≈ 11.811 × 5.906 × 0.591 in, for reference only; the metric dimensions govern.
| Depth (H) | 300 mm |
|---|---|
| Flange width (B) | 150 mm |
| Flange thickness (tf) | 15 mm |
| Web thickness (tw) | 15 mm |
| Mass per meter (published) | 13.5 kg/m |
| Section property (calculated) | Value |
|---|---|
| Cross-section area A | 8550 mm² |
| Moment of inertia Ix | 11607 cm⁴ |
| Moment of inertia Iy | 851.3 cm⁴ |
| Section modulus Sx | 773.8 cm³ |
| Section modulus Sy | 113.5 cm³ |
| Radius of gyration rx | 116.5 mm |
| Radius of gyration ry | 31.56 mm |
| Torsion constant J | 64.13 cm⁴ |
| Mass per meter (calculated) | 16.2 kg/m |
Derived from the cross-section geometry by polygon integration. The published mass per meter is the catalog value; the calculated figure is a geometric cross-check. Because the modulus of FRP is about a tenth of steel's, deflection usually governs, so check spans in the profile calculator. For a planning budget per meter, enter these dimensions in the price estimator.
A dimensioned cross-section in DXF, free and without a login. It opens in AutoCAD, DraftSight, LibreCAD and other CAD packages.
What a 300×150×15 mm fiberglass I-beam carries
| Span (m) | Allowable UDL (kN/m) | ≈ lb/ft | Governing check |
|---|---|---|---|
| 1 | 55.9 | 3833 | shear |
| 1.5 | 37.3 | 2555 | shear |
| 2 | 28.0 | 1917 | shear |
| 2.5 | 22.4 | 1533 | shear |
| 3 | 18.6 | 1278 | shear |
| 4 | 11.5 | 789 | deflection |
| 5 | 6.1 | 419 | deflection |
| 6 | 3.6 | 248 | deflection |
Spans where the allowable load falls below 0.05 kN/m are omitted. Point loads, connections, lateral restraint and other exposures need their own check: open this section in the calculator or compare every size in the span tables.
Mechanical and physical properties
| Property | Value | Test method |
|---|---|---|
| Tensile modulus (longitudinal) | 23 GPa | EN ISO 527-4 |
| Tensile modulus (transverse) | 7 GPa | EN ISO 527-4 |
| Tensile strength (longitudinal) | 240 MPa | EN ISO 527-4 |
| Tensile strength (transverse) | 50 MPa | EN ISO 527-4 |
| Flexural strength (longitudinal) | 240 MPa | EN ISO 14125 |
| Flexural strength (transverse) | 100 MPa | EN ISO 14125 |
| Interlaminar shear strength (ILSS) | 30 MPa | EN ISO 14130 |
| Pin-bearing strength (longitudinal) | 150 MPa | EN 13706-2 Annex E |
| Pin-bearing strength (transverse) | 70 MPa | EN 13706-2 Annex E |
| Compressive strength (longitudinal) | 240 MPa | EN ISO 604 |
| Barcol hardness | 45 | ASTM D2583 |
| Water absorption (24 h) | 0.6 % | EN ISO 62 |
- Resin:
- Isophthalic unsaturated polyester
- Glass content:
- 65–70% by weight
- Density:
- 1.9 g/cm³
- Grade:
- E23
- Fire:
- Standard grade — not fire-retardant (specify an FR grade for ASTM E84 Class 1)
Data basis: F1-published general-purpose laminate (FRP Profile Design Manual DOC-PF-2026-EN Rev. B); ILSS 30 MPa published above the EN 13706 minimum of 25 MPa; transverse values are EN 13706-3 Table 1 grade minimums. Standard isophthalic polyester is not fire-retardant — for ASTM E84 Class 1 specify the FR-E23 grade. Compressive strength, Barcol hardness and water absorption are not specified by EN 13706 — the figures shown are typical industry values for this resin system, pending F1 certified test data; request certified values before final design.
Standards: EN 13706 Grade E23.
Values marked “Verify before release” are pending certified test data and are never estimated. Request batch-traceable certified data through the quote form before final design.
Other I-beams in the catalog 9 sizes
- I 76×38×6.4 · 1.2 kg/m
- I 100×50×6 · 1.6 kg/m
- I 120×60×6 · 2 kg/m
- I 152×76×6.4 · 2.9 kg/m
- I 160×80×8 · 3.6 kg/m
- I 200×100×10 · 5.8 kg/m
- I 240×120×12 · 8.4 kg/m
- I 300×150×15 · 13.5 kg/m
- I 305×305×12.7 · 16 kg/m
Applications, resin options and quotation details are on the fiberglass I-beam product page.
I 300×150×15: common questions
How much does a fiberglass I-beam 300×150×15 mm weigh?
The published mass is 13.5 kg per meter (about 9.07 lb/ft), so a standard 6 m length weighs about 81.0 kg.
What load can a 300×150×15 mm fiberglass I-beam carry?
On the published design basis (EN 13706 E23, LRFD to ASCE/SEI 74-23, outdoor exposure, L/250 deflection with shear deformation), the allowable service uniform load is about 55.9 kN/m over a simply supported 1 m span and 18.6 kN/m over 3 m (shear governs at 3 m). Check point loads, connections and your own exposure in the calculator before release.
Is there a CAD drawing for I 300×150×15?
Yes. A dimensioned DXF cross-section is a free download on this page, with no login. It opens in AutoCAD, DraftSight, LibreCAD and other CAD packages.
What is the lead time for I 300×150×15?
I 300×150×15 is a catalog section in 6 m standard lengths. Catalog sections ship in 2–4 weeks. Catalog dimensions identify standard section options, not live inventory. Confirm tooling, material, quantity and production timing in the quotation.
Need a quote for I 300×150×15?
Send the dimensions, quantity, service conditions and destination. We reply within one business day.