CDS CDS Structural Assessment & Demolition Methods

Question 1

What is the primary purpose of a pre-demolition structural assessment?

Accepted Answer

Identify structural systems, load paths, and potential collapse hazards

Answer

A pre-demolition structural assessment identifies load-bearing elements, structural systems, and hazards to plan a safe and controlled demolition sequence.

Question 2

Which demolition method uses long-boom excavators with attachments to systematically dismantle a structure from the top down?

Accepted Answer

High-Reach Mechanical Demolition

Answer

High-reach mechanical demolition uses long-boom excavators equipped with demolition attachments to remove a structure from the top down in a controlled manner.

Question 3

Wrecking ball demolition is most appropriate for:

Accepted Answer

Heavy reinforced concrete or masonry structures with adequate surrounding clearance

Answer

Wrecking ball demolition is most effective on reinforced concrete or masonry buildings where there is adequate clearance from adjacent structures.

Question 4

What is progressive collapse, and why is it a key concern during demolition?

Accepted Answer

Uncontrolled sequential failure of structural elements beyond the intended demolition zone

Answer

Progressive collapse is the uncontrolled failure of adjacent structural elements triggered by an initial collapse, posing a major safety risk during demolition.

Question 5

Which structural system typically requires temporary shoring before interior demolition to prevent premature collapse?

Accepted Answer

Load-bearing masonry walls

Answer

Load-bearing masonry walls carry floor and roof loads, so they require temporary shoring before removal to prevent unplanned structural collapse.

(CDS) Certified Demolition Supervisor Practice Test

(CDS) Certified Demolition Supervisor Practice Test

CDS CDS Structural Assessment & Demolition Methods