Site Safe Working at Heights NZ 3

Question 1

What is the safe angle for setting up a single (leaning) ladder under NZ guidelines?

Accepted Answer

A ratio of 4:1 — for every 4 metres of height, the base should be 1 metre from the wall

Answer

The correct angle for a single ladder is a 4:1 ratio (approximately 75 degrees), meaning for every 4 metres of height, the base of the ladder should be 1 metre out from the wall.

Question 2

How far should a ladder extend above a landing platform under NZ guidelines?

Accepted Answer

At least 1 metre above the landing point

Answer

A ladder should extend at least 1 metre (approximately 3 rungs) above the landing point to provide a secure handhold when stepping on and off the ladder.

Question 3

What are 'edge protection systems' designed to do?

Accepted Answer

Prevent people and objects from falling from open edges or openings

Answer

Edge protection systems are designed to prevent people from falling from open edges or through openings, and to prevent objects from falling and striking people below.

Question 4

What is a 'safety net' used for in NZ construction?

Accepted Answer

To arrest a fall and catch a person who has fallen from a height, used as a collective fall arrest system

Answer

Safety nets are collective fall arrest systems installed below the work area to catch any person who falls. They provide protection for all workers in the area without individual equipment.

Question 5

What training is required before a worker uses a fall arrest harness in NZ?

Accepted Answer

Training in correct fitting, use, inspection, and limitations of the harness and associated equipment

Answer

Workers must be trained in how to correctly fit and adjust the harness, how to use it with associated equipment, how to inspect it before use, its limitations, and what to do if a fall occurs.

Site Safe Practice Test

Site Safe Practice Test

Site Safe Working at Heights NZ 3