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Questions and Answers

What is scaffolding used for?

To store construction materials

To provide a temporary shelter from rain and sun

To create a platform for people to rest

To support a work crew and materials to help construct, maintain, and repair buildings, bridges, and other man-made structures (correct)

What is the primary aim of constructing a scaffold?

To create a platform on which mason can work at different heights (correct)

To create a platform for people to rest

To store construction materials

To provide a temporary shelter from rain and sun

What are the three basic types of scaffolds?

Fixed scaffolds, Mobile scaffolds, and Aerial Lifts

Supported scaffolds, Suspended scaffolds, and Rolling scaffolds (correct)

Supported scaffolds, Suspended scaffolds, and Aerial Lifts

Fixed scaffolds, Suspended scaffolds, and Mobile scaffolds

What is the maximum height a scaffold can be before it becomes unstable?

4 times the length of the shortest part of the base Signup and view all the answers

What is the minimum requirement for a scaffold's foundation?

A firm foundation Signup and view all the answers

When is a scaffold considered inherently unsafe?

When it is set on an uneven or unstable surface Signup and view all the answers

What is the requirement for scaffolds higher than 125 feet in height above the base?

They must be designed by a registered professional engineer. Signup and view all the answers

Who should supervise the building or modification of scaffolds?

A competent person. Signup and view all the answers

What is the reason for requiring a registered professional engineer to design scaffolds higher than 125 feet?

To reflect the additional hazards and structural stress involved with such heights. Signup and view all the answers