Building Construction Handbook, Eighth Edition

Steel reinforcement mesh or fabric is produced in four different
formats for different applications:

Standard sheet size ~ 4„8 m long ¾ 2„4 m wide.
Standard roll size ~ 48 and 72 m long ¾ 2„4 m wide.

Specification ~ format letter plus a reference number. This number
equates to the cross sectional area in mm^2 of the main bars per
metre width of mesh.
E.g. B385 is rectangular mesh with 7 mm dia. main bars, i.e. 10 bars
of 7 mm dia. @ 100 mm spacing = 385 mm^2.

Refs. BS 4483: Steel fabric for the reinforcement of concrete.
Specification.

BS 4482: Steel wire for the reinforcement of concrete

products. Specification.

Format Type Typical application

A Square mesh Floor slabs

B Rectangular mesh Floor slabs

C Long mesh Roads and pavements

D Wrapping mesh Binding wire with concrete fire

protection to structural steelwork

Types of Reinforcement---Steel Mesh