Design basis

Material:: EN 13706 Grade E23 (E-glass pultruded): E_L 23 GPa and shear strength 25 MPa (EN 13706 minimums), G_LT 3.5 GPa (assumed)
Strength:: LRFD, ASCE/SEI 74-23 (φ = 0.65, λ = 0.8 for occupancy live load, γ_Q = 1.6); design bending strength 88.4 MPa, shear 11 MPa after λ and the knockdown
Environment:: Outdoor exposed (0.85 on strengths)
Load case:: Simply supported, uniform distributed load, strong-axis bending
Deflection:: L/250 at service load (Timoshenko shear deflection included)

Values are the maximum service UDL in kN/m (1 kN/m ≈ 68.5 lb/ft). The superscript marks the governing check: ^d deflection, ^b bending, ^v shear; a dash means below practical loading. Local buckling, lateral-torsional buckling, connections and long-term creep are not covered; review them to ASCE/SEI 74-23 or CEN/TS 19101. For a different deflection limit, point loads, cantilevers or another code, use the FRP profile calculator.

FRP I-beam span table

This FRP span table lists allowable uniform service loads for pultruded fiberglass I-beams and wide-flange beams used in walkways, platforms, and pipe racks. Compare the required clear span and load, then open the linked calculator to review the governing deflection, bending, or shear check.

Section (mm)	kg/m	Ix ×10⁶ mm⁴	1 m	1.5 m	2 m	2.5 m	3 m	4 m	5 m	6 m	Calculator
I 76×38×6.4	1.2	0.73	4.6^d	1.4^d	0.62^d	0.32^d	0.19^d	0.08^d	—	—	Check
I 100×50×6	1.6	1.67	7.3^v	3.2^d	1.4^d	0.73^d	0.43^d	0.18^d	0.09^d	0.05^d	Check
I 120×60×6	2	2.97	9.0^v	5.5^d	2.4^d	1.3^d	0.75^d	0.32^d	0.17^d	0.10^d	Check
I 152×76×6.4	2.9	6.60	12.3^v	8.2^v	5.2^d	2.8^d	1.6^d	0.71^d	0.37^d	0.21^d	Check
I 160×80×8	3.6	9.39	15.9^v	10.6^v	7.3^d	3.9^d	2.3^d	1.0^d	0.52^d	0.30^d	Check
I 200×100×10	5.8	22.93	24.9^v	16.6^v	12.4^v	9.2^d	5.5^d	2.4^d	1.3^d	0.73^d	Check
I 240×120×12	8.4	47.54	35.8^v	23.9^v	17.9^v	14.3^v	11.0^d	4.9^d	2.6^d	1.5^d	Check
I 300×150×15	13.5	116.07	55.9^v	37.3^v	28.0^v	22.4^v	18.6^v	11.5^d	6.1^d	3.6^d	Check
I 305×305×12.7	16	188.71	49.0^v	32.7^v	24.5^v	19.6^v	16.3^v	12.3^v	9.4^d	5.6^d	Check

FRP channel span table

This FRP channel span table gives allowable uniform service loads for pultruded fiberglass U-profiles commonly used as stringers, cable-tray supports, and frame rails. Values use the design basis stated above; follow the calculator link when connection behavior, concentrated loads, or a different exposure condition governs.

Section (mm)	kg/m	Ix ×10⁶ mm⁴	1 m	1.5 m	2 m	2.5 m	3 m	4 m	5 m	6 m	Calculator
U 38×13×4.8	0.4	0.04	0.30^d	0.09^d	—	—	—	—	—	—	Check
U 50×25×5	0.7	0.15	1.0^d	0.32^d	0.13^d	0.07^d	—	—	—	—	Check
U 76×25×6.4	1	0.52	3.4^d	1.1^d	0.45^d	0.23^d	0.14^d	0.06^d	—	—	Check
U 76×38×6.4	1.4	0.73	4.6^d	1.4^d	0.62^d	0.32^d	0.19^d	0.08^d	—	—	Check
U 100×30×6	1.5	1.14	7.1^d	2.2^d	0.97^d	0.50^d	0.29^d	0.12^d	0.06^d	—	Check
U 100×50×6	1.8	1.67	7.3^v	3.2^d	1.4^d	0.73^d	0.43^d	0.18^d	0.09^d	0.05^d	Check
U 120×50×6	2	2.58	9.0^v	4.9^d	2.1^d	1.1^d	0.66^d	0.28^d	0.14^d	0.08^d	Check
U 150×40×6	2.1	3.80	11.4^v	7.1^d	3.1^d	1.6^d	0.96^d	0.41^d	0.21^d	0.12^d	Check
U 152×43×6.4	2.2	4.36	12.3^v	8.0^d	3.6^d	1.9^d	1.1^d	0.47^d	0.24^d	0.14^d	Check
U 152×43×9.5	3.2	6.02	17.5^v	11.1^d	4.9^d	2.6^d	1.5^d	0.65^d	0.34^d	0.20^d	Check
U 160×48×8	3	6.43	15.9^v	10.6^v	5.2^d	2.8^d	1.6^d	0.69^d	0.36^d	0.21^d	Check
U 200×60×8	3.8	13.01	20.3^v	13.6^v	10.1^d	5.4^d	3.2^d	1.4^d	0.72^d	0.42^d	Check
U 200×60×10	4.6	15.70	24.9^v	16.6^v	12.2^d	6.5^d	3.9^d	1.7^d	0.87^d	0.51^d	Check
U 240×72×8	4.6	23.00	24.8^v	16.5^v	12.4^v	9.2^d	5.5^d	2.4^d	1.3^d	0.74^d	Check
U 240×72×12	6.8	32.56	35.8^v	23.9^v	17.9^v	13.1^d	7.8^d	3.4^d	1.8^d	1.0^d	Check
U 254×76×9.5	5.6	31.87	30.8^v	20.6^v	15.4^v	12.3^v	7.6^d	3.3^d	1.7^d	1.0^d	Check
U 300×90×15	10.4	79.48	55.9^v	37.3^v	28.0^v	22.4^v	18.3^d	8.1^d	4.3^d	2.5^d	Check
U 305×89×12.7	8.8	71.45	49.0^v	32.7^v	24.5^v	19.6^v	16.3^v	7.3^d	3.8^d	2.3^d	Check
U 360×108×18	15	164.81	80.6^v	53.7^v	40.3^v	32.2^v	26.9^v	16.4^d	8.7^d	5.1^d	Check

FRP square and rectangular tube span table

This FRP span table covers pultruded fiberglass square and rectangular hollow sections used for solar purlins, guardrail posts, and light framing. The values represent simply supported strong-axis members under uniform load, so designers should separately check local attachment forces, post action, and project-specific load cases.

Section (mm)	kg/m	Ix ×10⁶ mm⁴	1 m	1.5 m	2 m	2.5 m	3 m	4 m	5 m	6 m	Calculator
SHS 25×25×3.2	0.4	0.02	0.16^d	—	—	—	—	—	—	—	Check
SHS 38×38×4.8	0.9	0.12	0.82^d	0.25^d	0.10^d	0.05^d	—	—	—	—	Check
RHS 40×20×7	1	0.10	0.68^d	0.20^d	0.09^d	—	—	—	—	—	Check
RHS 40×25×8	1.2	0.12	0.85^d	0.26^d	0.11^d	0.06^d	—	—	—	—	Check
SHS 50×50×5	1.4	0.31	2.1^d	0.63^d	0.27^d	0.14^d	0.08^d	—	—	—	Check
SHS 60×60×5	1.7	0.56	3.7^d	1.1^d	0.49^d	0.25^d	0.15^d	0.06^d	—	—	Check
SHS 75×75×6	2.5	1.32	8.4^d	2.6^d	1.1^d	0.59^d	0.34^d	0.15^d	0.07^d	—	Check
RHS 80×60×5	2	1.13	7.3^d	2.3^d	0.97^d	0.50^d	0.29^d	0.12^d	0.06^d	—	Check
SHS 100×100×6	3.5	3.34	14.6^v	6.4^d	2.8^d	1.5^d	0.85^d	0.36^d	0.19^d	0.11^d	Check
SHS 100×100×8	4.5	4.18	18.6^v	8.1^d	3.5^d	1.8^d	1.1^d	0.46^d	0.23^d	0.14^d	Check
RHS 100×60×8	3.6	2.83	17.6^d	5.6^d	2.4^d	1.3^d	0.73^d	0.31^d	0.16^d	0.09^d	Check
SHS 114×114×6	4	5.05	16.9^v	9.5^d	4.2^d	2.2^d	1.3^d	0.55^d	0.28^d	0.16^d	Check
SHS 114×114×8	5.2	6.39	21.7^v	12.0^d	5.3^d	2.8^d	1.6^d	0.69^d	0.36^d	0.21^d	Check
SHS 120×120×8	5.6	7.53	23.0^v	14.0^d	6.2^d	3.3^d	1.9^d	0.82^d	0.42^d	0.24^d	Check
RHS 120×60×5	2.6	3.09	15.2^v	6.0^d	2.6^d	1.4^d	0.79^d	0.34^d	0.17^d	0.10^d	Check
SHS 132×132×9.5	7	11.71	29.7^v	19.8^v	9.5^d	5.0^d	3.0^d	1.3^d	0.65^d	0.38^d	Check
SHS 152×152×9.5	8.2	18.41	34.9^v	23.3^v	14.6^d	7.8^d	4.6^d	2.0^d	1.0^d	0.59^d	Check
SHS 160×160×8	7.4	18.78	31.8^v	21.2^v	14.7^d	7.8^d	4.6^d	2.0^d	1.0^d	0.61^d	Check
SHS 200×200×10	11.6	45.85	49.7^v	33.1^v	24.9^v	18.4^d	11.0^d	4.8^d	2.5^d	1.5^d	Check
SHS 240×240×12	16.8	95.08	71.6^v	47.7^v	35.8^v	28.6^v	22.0^d	9.8^d	5.1^d	3.0^d	Check

FRP round tube span table

This FRP round-tube span table provides allowable uniform service loads for pultruded fiberglass circular hollow sections used as handrails, cross-members, and light spanning members. Select the diameter and wall thickness, compare the clear span, and verify the result in the calculator before final project specification.

Section (mm)	kg/m	Ix ×10⁶ mm⁴	1 m	1.5 m	2 m	2.5 m	3 m	4 m	5 m	6 m	Calculator
CHS 25×3	0.3	0.01	0.09^d	—	—	—	—	—	—	—	Check
CHS 32×3	0.4	0.03	0.20^d	0.06^d	—	—	—	—	—	—	Check
CHS 38×3.2	0.5	0.05	0.37^d	0.11^d	—	—	—	—	—	—	Check
CHS 42×4	0.7	0.09	0.60^d	0.18^d	0.08^d	—	—	—	—	—	Check
CHS 50×4	0.9	0.15	1.1^d	0.32^d	0.13^d	0.07^d	—	—	—	—	Check
CHS 50×5	1.1	0.18	1.2^d	0.37^d	0.16^d	0.08^d	—	—	—	—	Check
CHS 60×5	1.3	0.33	2.2^d	0.68^d	0.29^d	0.15^d	0.09^d	—	—	—	Check
CHS 63.5×6.4	1.7	0.47	3.2^d	0.97^d	0.41^d	0.21^d	0.12^d	0.05^d	—	—	Check
CHS 70×5	1.6	0.54	3.6^d	1.1^d	0.47^d	0.24^d	0.14^d	0.06^d	—	—	Check
CHS 76×6.4	2.1	0.85	5.6^d	1.7^d	0.74^d	0.38^d	0.22^d	0.09^d	—	—	Check
CHS 80×5	1.8	0.83	5.4^d	1.7^d	0.72^d	0.37^d	0.22^d	0.09^d	—	—	Check
CHS 80×7	2.5	1.08	7.0^d	2.2^d	0.93^d	0.48^d	0.28^d	0.12^d	0.06^d	—	Check
CHS 89×6.4	2.5	1.42	9.1^d	2.8^d	1.2^d	0.63^d	0.37^d	0.16^d	0.08^d	—	Check
CHS 100×6	2.7	1.96	12.2^d	3.9^d	1.7^d	0.87^d	0.51^d	0.22^d	0.11^d	0.06^d	Check
CHS 114×6.4	3.3	3.14	14.9^v	6.1^d	2.7^d	1.4^d	0.81^d	0.34^d	0.18^d	0.10^d	Check
CHS 127×6.4	3.7	4.42	16.7^v	8.4^d	3.7^d	1.9^d	1.1^d	0.48^d	0.25^d	0.14^d	Check
CHS 150×8	5.4	9.02	24.6^v	16.4^v	7.4^d	3.9^d	2.3^d	0.98^d	0.50^d	0.29^d	Check

Take the shortlisted section further

Use a row’s Check link to carry that section into the calculator, and its datasheet for the published dimensions. For other project questions, continue below.

How to read an FRP span chart

Find the profile row and read across to your span: the value is the maximum uniformly distributed service load the section carries with every check passing. Nearly every value in these tables is deflection-governed (^d), the defining feature of fiberglass structural design. With E_L around a tenth of steel, an FRP member sized for strength alone would deflect far past any serviceability limit, so span tables for pultruded profiles are effectively stiffness tables.

Shear (^v) only governs on short, deep sections, and bending (^b) rarely governs at all under L/250. If your project uses L/180 (industrial economy) or L/360 (pedestrian comfort, IBC 1604.3), the ranking of sections stays the same but every value scales, so use the calculator with your exact limit.

Exact section properties (A, Ix, Iy, Sx, torsion and EN 13706 mechanical data) for every row are in the profile datasheets, and dimensioned drawings are on the fiberglass structural shapes size chart. For members these tables cannot represent (angles in single-leg bending, continuous spans, frames), ask the engineering assistant or send the case to engineering.

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F1 Composite. (2026). FRP Span Tables & Load Charts [Data set]. Chongqing F1 Composites Co., Ltd. https://www.f1composite.com/frp-span-tables

MLA

F1 Composite. “FRP Span Tables & Load Charts.” Chongqing F1 Composites Co., Ltd., 2026, https://www.f1composite.com/frp-span-tables.

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@misc{f1composite_frp_span_tables_2026,
  author       = {{F1 Composite}},
  title        = {FRP Span Tables & Load Charts},
  year         = {2026},
  howpublished = {\url{https://www.f1composite.com/frp-span-tables}},
  note         = {Data set}
}

Frequently asked questions

How far can a pultruded fiberglass beam span?

It depends on section depth and the deflection limit, because FRP spans are almost always deflection-governed. As reference points from these tables (EN 13706 E23, L/250, outdoor): an FRP I-beam 200×100×10 carries about 5.5 kN/m over a 3 m simple span; an I-beam 240×120×12 carries about 11 kN/m at 3 m; a 100×100×6 square tube carries about 1.5 kN/m at 2.5 m. For a different limit (L/180 walkway economy, L/360 pedestrian comfort) or a point load, run the same section through the FRP profile calculator.

What design basis do these FRP span tables use?

Material EN 13706 Grade E23 minimums (E_L 23 GPa, shear strength 25 MPa) with an assumed G_LT of 3.5 GPa; strength checks per LRFD ASCE/SEI 74-23 with φ = 0.65, the time-effect factor λ = 0.8 for occupancy live load and γ_Q = 1.6 (ASCE 7-22); an outdoor knockdown of 0.85 on strengths; simply supported uniform load; deflection limited to L/250 at service load including the Timoshenko shear correction. The governing check for each value is marked: d deflection, b bending, v shear.

Do these span tables include shear deflection?

Yes. Pultruded FRP has G_LT of only ~3.5 GPa against E_L of 23 GPa, so shear deformation contributes 5–15% of total deflection at common span-to-depth ratios and more on short spans. Every deflection-governed value in these tables applies the load-case-matched Timoshenko correction; plain 5wL⁴/384EI tables overstate what short-span FRP beams can carry.

Are these tables valid for FRP profiles from any manufacturer?

The mechanical basis is the EN 13706 E23 minimum-modulus grade, so any profile certified to E23 meets or exceeds the stiffness assumed here. Section dimensions and weights are the F1 Composite published catalog; another maker's nominally similar section can differ in wall thickness and flange width, which changes the numbers. Check the matching profile datasheet for exact section properties before final design.

Can I use these span tables for FRP grating?

No. Molded and pultruded gratings are plate-like panels with their own load-deflection tables per panel type and bearing-bar pitch. These tables cover single pultruded structural profiles in bending. For grating, see the FRP gratings product page or ask engineering for panel load tables against your support spacing.

FRP span tables and load charts

Design basis

FRP I-beam span table

FRP channel span table

FRP square and rectangular tube span table

FRP round tube span table

Take the shortlisted section further

Check a different load case

Estimate section weight

Review standard profile sizes

How to read an FRP span chart

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FRP span tables and load charts

Design basis

FRP I-beam span table

FRP channel span table

FRP square and rectangular tube span table

FRP round tube span table

Take the shortlisted section further

Check a different load case→

Estimate section weight→

Review standard profile sizes→

How to read an FRP span chart

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Need a section these tables don't cover?

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Estimate section weight

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