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B503 Mesh in Detail

Almost a quarter of all steel reinforcement in the UK is supplied as reinforcement mesh, and there are many different grades of mesh available, with varying strengths and structural properties, to suit all kinds of construction projects. B503 reinforcement mesh is one of the mesh types that are classed as structural meshes. Structural meshes differ from square meshes in that the main reinforcement is in one direction only.

In this mesh, the longitudinal wires have a nominal pitch of 100mm, but the transverse wires have a nominal pitch of 200mm. In some structural mesh types, the wire diameters for the longitudinal wires may be greater than for the transverse wires, but for B503 mesh, they both have a diameter of 8mm.

When To Use B503 Reinforcement Mesh

B503 mesh is a medium-grade structural mesh, used widely in commercial and civil engineering projects, as well as in domestic builds, where structural reinforcement is required. The appropriate grade of steel reinforcement should always be specified in the project plans drawn up by structural engineers, to ensure that the correct tensile strength is achieved in every slab or component of the build.

Reinforcement mesh panels should always be tied securely in place using appropriate fastening products, and supported from beneath in order to ensure that the mesh panels are level. Reinforcement mesh should always be positioned so that a minimum of 50mm of concrete depth is achieved below and above the mesh panels.

Available in standard and merchant sheet sizes, B503 mesh weighs in at 5.93kg per m2, giving a standard sheet weight of 66.66kg, and a merchant sheet weight of 51.25kg. The mesh we supply conforms to BS4483:2005 and is quality assured by us, providing total peace of mind for anyone involved in the planning and procurement of concrete reinforcement products.

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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