PASMA Tower Assembly Methods

Question 1

What is the recommended method for assembling a mobile aluminium tower scaffold?

Accepted Answer

Advance guard rail method (AGR)

Answer

The advance guard rail (AGR) method, also known as 3T (Through The Trap), is the recommended method as it ensures the operative is always protected by guard rails during assembly. This is endorsed by PASMA and meets the Work at Height Regulations 2005.

Question 2

What must be checked before starting to assemble a tower scaffold?

Accepted Answer

The ground conditions and levelness of the surface

Answer

Before assembly, the ground must be inspected to ensure it is firm, level, and capable of supporting the tower and any imposed loads. Soft or uneven ground can cause instability and collapse.

Question 3

When using the 3T (Through The Trap) method, at what point are guard rails installed?

Accepted Answer

Before the operative climbs to the next platform level

Answer

In the 3T method, temporary guard rails are installed from the level below before the operative climbs through the trapdoor to the next level. This ensures fall protection is always in place.

Question 4

What is the minimum number of people required to safely assemble a standard mobile tower scaffold?

Accepted Answer

Two people

Answer

PASMA recommends a minimum of two people for safe tower assembly — one to pass components and one to assemble at height. Working alone increases the risk of dropped components and unassisted falls.

Question 5

What should be done with all tower components before assembly begins?

Accepted Answer

They should be visually inspected for damage, corrosion, and defects

Answer

All components must be visually inspected before use. Damaged, bent, corroded, or defective parts must not be used as they compromise the structural integrity of the tower. This is a requirement under PUWER 1998.

PASMA Practice Test

PASMA Practice Test

PASMA Tower Assembly Methods