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B1131 Mesh in Detail

Using the right grade and type of reinforcement mesh is vital for the structural integrity and long life of your construction project, so it’s important to understand the properties of all the different types of mesh, and to follow the advice of your structural engineer or architect.

When a mesh is described as a structural mesh, it means that the main reinforcement delivered by the mesh is in one direction only. This contrasts with square meshes, where the reinforcement is distributed equally in both directions, and with long meshes, where the transverse wires provide no reinforcement at all, serving only to hold the longitudinal wires together.

B1131 reinforcement mesh is one of the heavier duty structural meshes, with longitudinal wires that are 12mm in diameter, and transverse wires that are 8mm in diameter. Longitudinal nominal pitch is 100mm and transverse nominal pitch is 200mm. With a mass of 10.9kg per m2, a standard (non-eco) sized sheet (4.8m x 2.4m) weighs 122.95kg, and a merchant sized sheet weighs 94.18kg.

B1131 reinforcement mesh is covered by BS4449:2005, and all mesh supplied by us conforms to those standards, to ensure guaranteed quality and consistency of manufacture.

When To Use B1131 Reinforcement Mesh

This heavy duty reinforcement mesh is suitable for applications where significant structural reinforcement is needed, for example in commercial or civil engineering construction projects, or in large-scale domestic builds with a larger than average footprint or significant structural challenges.

Always follow the recommendations of your structural engineer or architect when sourcing reinforcement meshes and other products, as their choices will be based on careful structural calculations and knowledge of the standards and regulations that should be adhered to for your specific build. Failure to use the right reinforcement could compromise the structural integrity of your build, and shorten its overall lifespan.

Overview

What is A393 rebar mesh?

A393 fabric mesh is welded steel rebar mesh fabric produced out of 10mm deformed steel rebar. It is manufactured with longitudal and latitudal H10 rebar wires, with an aperture size (the hole between the wires) of 200mm x 200mm. The ‘393’ refers to the cross sectional area per metre width, which essentially means how much steel ‘reinforcement’ per metre width. Larger or smaller apertures for the same diameter steel would increase or decrease this cross sectional area, and larger or smaller diameter steel rebar used with the same aperture size would also increase or decrease this figure (such as A252, which is mesh with the same size aperture, but using 8mm steel rebar instead of the 10mm steel rebar used in A393).

What is a393 rebar mesh used for?

A 393 rebar mesh is used heavy-duty reinforcement of concrete elements, including slabs and walls. Flat sheets are used in the construction of driveways, building floors, and foundation slabs.

A393 mesh dimensions and sheet size?

Standard sheets of A393 mesh are 4.8 metres by 2.4 metres. However, it is also possible to spec Merchant sized sheets (at 3.6 metres by 2.0 metres), and what if often referred to as ‘Safety Size’ sheets, which are 2.4 metres by 1.2 metres. You can also order bespoke sheet sizes to your schedule/requirements.Learn more about mesh sizes here.

A393 Mesh Overlap

Lap length for A393 mesh of standard size sheets should be at least 400mm on each side*. Eurocode 2 states that lap length should be staggered so as not to create a large zone of discontinuity that could potentially lead to member failure.*This figure is purely a suggestion and all overlap calculations should be made by a qualified structural or civil engineer.

A393 Mesh Bar Size

Rebar used in A393 mesh is H10 or 10mm rebar for both longitudal and latitudal (cross) bars.

A393 Mesh Prices

Prices for a393 mesh in the UK have varied a lot in recent years, with very high prices during Covid times, due to demand and global supply, to much more reasonable prices today. Expect to pay between £55 and £65 for a standard size (4.8m x 2.4m) sheet. The lower end of the scale would be for what is often referred to as ‘eco’ sheets with flying ends.

Dimensions

  • Standard 4.8m x 2.4m
  • Merchant 3.6m x 2.0m
  • Flying Ends
  • Bespoke Shapes

Specifications

  • 10mm x 10mm
  • 14 Sheets Per Tonne
  • 6.16 Kg/m²

Lead Time

1-3 days

Materials

10mm steel mesh

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