R335 Reinforcing Steel Mesh — 8 mm Wire, 3.35 cm²/m
R335 is the most widely specified structural R-type welded mesh — 8 mm longitudinal wires at 150 mm pitch, 3.35 cm²/m cross-sectional area, supplied in standard ~6.0 × 2.3 m sheets to DIN 488-4 and EN 10080 for international export.
R335 Mesh: Technical Specification
R335 welded reinforcing fabric is the most commonly encountered grade in the R-series. Produced to DIN 488-4 and EN 10080, it features 8 mm longitudinal wires at 150 mm pitch, yielding a cross-sectional area of 3.35 cm²/m. The “R” designation confirms that structural reinforcement is provided in one primary direction — the longitudinal wires bear design loads, and the transverse wires maintain positional integrity during concrete placement.
An 8 mm longitudinal wire weighs 0.395 kg/m (from the standard formula: d² × 0.00617 = 8² × 0.00617 ≈ 0.395 kg/m), and a 6.0 × 2.3 m sheet contains approximately 16 longitudinal wires. Combined with the transverse wire content, a standard R335 sheet weighs in the region of 26–30 kg — a practical handling weight for site operations.
R335 is the default mesh grade in many national structural concrete specifications across Europe and is widely accepted by structural engineers designing to EN 1992-1-1 (Eurocode 2).
Key Dimensional Data
| Parameter | Value |
|---|---|
| Designation | R335 (structural, single-direction) |
| Longitudinal wire diameter | ~8 mm |
| Longitudinal pitch | 150 mm |
| Cross-sectional area | ~3.35 cm²/m |
| Standard sheet size | ~6.0 × 2.3 m (typical) |
| Steel grade | B500A / B500B |
| Wire weight | 0.395 kg/m (8 mm bar) |
| Governing standard | DIN 488-4 / EN 10080 |
Why R335 Is the Most Specified Mesh Grade
R335 strikes the optimal balance between steel area, sheet weight, and economy for the majority of structural concrete applications.
Versatile Reinforcement Ratio
3.35 cm²/m satisfies the minimum reinforcement requirements of EN 1992-1-1 for most slab configurations, eliminating the need for additional bar reinforcement in standard designs.
B500A / B500B Grades
500 MPa characteristic yield strength. B500A (Agt ≥ 2.5%) is standard; B500B (Agt ≥ 5.0%) available for designs requiring higher ductility class, including many seismic design situations.
Practical Sheet Handling
Standard 6.0 × 2.3 m sheets at approximately 26–30 kg are manageable for two-person placement without mechanical aids, reducing site labour requirements.
Typical Applications for R335 Mesh
R335 is the go-to structural mesh for a broad range of reinforced concrete elements:
- Residential and commercial suspended slabs — both simply supported and continuous flat slabs in multi-storey construction under Eurocode 2 design.
- Ground-bearing industrial and warehouse floors — reinforced concrete floors on grade for manufacturing, logistics, and retail premises.
- Precast concrete floor planks and half-slabs — as the principal or supplementary reinforcement layer in precast elements.
- Bridge deck overlays and road slabs — concrete road pavements and bridge deck wearing courses where crack control is critical.
- Retaining wall panels and basement slabs — in-situ concrete elements where one-directional reinforcement dominates the design.
- Swimming pools and water-retaining structures — crack-width-controlled design per Eurocode 2 section 7.3.
For elements requiring equal reinforcement in both directions, Q-mesh (square/bidirectional) grades are more appropriate. We supply a full range — contact us to discuss your project requirements.
Explore the full mesh range →Export & Shipping
R335 mesh is packaged for international shipment with complete export documentation.
Seaworthy Bundle Packing
Sheets are stacked, banded in ~2-tonne packs, and prepared for container or break-bulk loading. Corrosion protection is applied for ocean transit to all destinations.
Documentation Package
Mill Test Certificate (EN 10204 3.1), Certificate of Origin, CE Declaration of Performance, packing list, and commercial invoice. Third-party inspection available. See Export & Delivery for details.
Compare R335 with Related Grades
R257 — 7 mm / 2.57 cm²/m
Lighter option for lower reinforcement ratio requirements. Suitable where design demand falls between R188 and R335.
View R257 →R424 — 9 mm / 4.24 cm²/m
Heavier structural mesh for more demanding slab designs. Step up from R335 when higher steel area is required.
View R424 →Full Mesh & Rebar Range
Explore R-series, Q-series, and loose bar products for complete structural reinforcement solutions.
All Products →Frequently Asked Questions — R335 Mesh
Why is R335 the most commonly specified mesh grade?
What is the unit weight of R335 mesh per sheet?
Is R335 mesh available in B500B grade for higher ductility requirements?
Can R335 mesh be supplied to specifications other than DIN 488-4?
What is the difference between R335 and Q335 mesh?
Source German-standard rebar with full export documentation
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