CSOC Scaffold Safety 3

Question 1

What is a 'ledger' in the context of tube and coupler scaffolding?

Accepted Answer

A horizontal tube running parallel to the face of the building

Answer

A diagonal brace connecting opposite sides of a scaffold bay

Answer

The inspection record maintained for each scaffold structure

Answer

A vertical support tube anchored directly to the building wall

Question 2

Which Singapore legislation specifically governs the erection, use, and dismantling of scaffolds at workplaces?

Accepted Answer

Workplace Safety and Health (Scaffolds) Regulations

Answer

Building Control Act

Answer

Environmental Public Health Act

Answer

Fire Safety Act

Question 3

What protective measure must be installed when scaffolding is erected over a public walkway or road in Singapore?

Accepted Answer

Protective fans, safety nets, or covered walkways for pedestrian protection

Answer

Warning signs and cones at ground level only

Answer

A dedicated safety officer stationed below at all times

Answer

High-visibility tape around the perimeter of the scaffold

Question 4

What does a yellow scaffold tag indicate?

Accepted Answer

The scaffold is restricted to authorized and competent persons only

Answer

The scaffold is fully safe for use by all workers on site

Answer

The scaffold has been condemned and must be removed immediately

Answer

The scaffold has recently been erected and is awaiting final inspection

Question 5

Which of the following items is NOT a structural component of a tube and coupler scaffold?

Accepted Answer

Webbing straps

Answer

Standards (vertical load-bearing tubes)

Answer

Couplers (metal fittings joining tubes)

Answer

Ledgers (horizontal tubes parallel to the building)

Question 6

What must occur after any repair or alteration is made to an existing scaffold structure?

Accepted Answer

The altered scaffold must be re-inspected by a competent person before anyone uses it

Answer

The scaffold can be used immediately if the repair looks adequate visually

Answer

Only the section that was repaired needs to be visually checked by the foreman

Answer

A new scaffold tag colour must be applied without requiring a formal re-inspection

Question 7

What is the main structural purpose of diagonal bracing in a scaffold frame?

Accepted Answer

To prevent lateral sway and maintain the scaffold's structural rigidity

Answer

To bear the weight of workers and materials on the working platform

Answer

To provide a climbing route between scaffold levels for workers

Answer

To anchor the scaffold frame to the foundation at ground level