31 questions from the White Card construction induction (Australia) practice test.
10 questions, graded as you go, with the reason for every answer. Start free, no sign-up.
An extension ladder leans against a wall with its top resting 4 metres above the ground. About how far from the wall should its base be placed?
B. 1 metre
The recommended set-up ratio is 4 to 1: one unit out for every four units up. 4 m divided by 4 gives 1 m. Two metres out makes the angle too shallow and the base may slide.
Reference: Safe Work Australia, Managing the Risk of Falls at Workplaces Code of Practice, ladders
When an extension ladder is used to get onto a landing, how far should it extend above the landing?
C. At least 1 metre
A ladder used for access should extend at least 1 metre above the stepping-off point so the worker has something to hold while getting on and off. Half a metre does not give a secure handhold.
Reference: Safe Work Australia, Managing the Risk of Falls at Workplaces Code of Practice, ladders
When managing the risk of a fall, which option must be considered first?
D. Doing the work on the ground or on a solid construction
The first step is to carry out the work on the ground or on a solid construction so there is no fall risk. A harness system is a fall-arrest measure that only limits injury after a fall has started, so it comes much later in the order.
Reference: Model WHS Regulations, r 78 and 79