Reinforcing fabric (or mesh) is a large sheet of reinforcing bars electrically welded together to form a grid at either 200mm, 100mm or 400mm centres. All fabrics Devoran Metals supply conforms to British Standard BS4483:1998 or 2005
All standard fabrics (A, B, C & D) are supplied in 4.8 x 2.4m sheets.
A142, A252 and A393 are also available from stock in merchant 3.6 x 2m sheets.
Standard Reinforcing Fabric
Standard steel fabrics have a 100mm overhang on all four sides of the mesh. Typically, standard fabrics will be specified in most applications and are often used in RC slabs, footings and retaining walls. Depending on the application, the type of fabric required will be specified by a structural engineer based on load calculations.
As a general rule of thumb, for every 4.8 x 2.4m sheet allow approximately 1 sheet of fabric per 10m2 (including laps). For every merchant 3.6 x 2m sheet allow approximately 1 sheet of fabric per 6m2 (including laps).
Flying-End Reinforcing Fabric
In certain situations, such as thin slabs where not much cover is available, flying-end fabric will be specified. Structurally, flying-end fabric performs in the same way as standard fabric; the only difference is the omission of 2 bars on each cross-section, leaving an overhang of 500mm on two sides of the fabric.
This increased overhang allows the fabric to be laid next to each other or on top of each other, which optimises the cover and reduces steel congestion within the slab.