AS 1657 covers both commercial and industrial industries. Commentary should expound on clause 4.5.
There is a huge disparity on risks to dropped objects between
(a) a person walking to work in the central business district (CBD) where construction is in progress and
(b) a person walking inside a...
The use of "shall" makes it mandatory.
The clause is also referred in Clause 3.2.3.4 where use of expanded mesh with an appreture not exceeding 45mm is allowed by the Standard as shown in Figure 3.1
However, trafficable areas below this expanded mesh must comply with Clause 4.5.
This means a...