Point Load (Concentrated Imposed Load)

( Section 3.2)

A point load is supposed to be representative of a worker with a bag of tools, which is calculated at 112 kgs = 1.1 kN. As required by AS/NZS 1170.1 the point load for restricted access roofs is taken as 1.1 kN over an area of 100 mm diameter in the case of a person; or in the case of a superimposed load, such as an air conditioning unit, the area of contact if the load is not directly attached to the structure. A point load on a roof is always positive or downward (+).