What Does Selvedge Wire Mean in Rockfall Netting Rolls?

In rockfall netting rolls, selvedge wire means the edge wire along the roll edge. It is part of the finished roll structure.

Selvedge wire is not the main mesh wire, and it is not lacing wire. It should be understood together with mesh wire, mesh opening, surface treatment and roll size.

Selvedge Wire Is the Edge Wire of the Roll

The mesh body of rockfall netting is formed by mesh wire. The edge of the roll may use selvedge wire as part of the edge structure.

Mesh wire forms the hexagonal mesh body. Selvedge wire is positioned along the roll edge. Because they are used in different positions, their diameters may also be different.

This is why a single wire-diameter number should not be used to describe every wire in the finished roll.

Selvedge Wire Should Be Read Separately from Mesh Wire

Some specification records state mesh wire and selvedge wire separately.

For example:

This does not mean the same wire is being repeated. It means the roll has a mesh-body wire detail and an edge-wire detail.

Selvedge Wire Is Not Lacing Wire

Selvedge wire and lacing wire should also be separated.

Selvedge wire belongs to the roll edge. Lacing wire is normally used for joining, tying or connection work as an order-support item.

If all three terms are only described as "wire", the specification can become unclear.

Selvedge Wire Is a Roll Detail, Not a Separate Main Product

Selvedge wire should not be treated as a separate main product line on a rockfall netting site. It is better understood as one detail of a double twisted hexagonal rockfall netting roll.

When this edge detail is required, it should be stated together with the complete roll specification, not separated from the finished product.

A Clear Specification Keeps the Edge Detail in Context

A clearer expression can be:

3.0mm mesh wire, 80x100mm mesh opening, 3.9mm selvedge wire, hot dipped galvanized, 2x25m rolls

This wording states the mesh body wire, mesh opening, edge wire, surface treatment and roll size in one specification.

Read as a specification detail, selvedge wire means the edge wire of the rockfall netting roll. It should be separated from mesh wire and lacing wire, but understood as part of the finished roll structure.