CDS CDS Structural Assessment & Demolition Methods 2

Question 1

What is the primary purpose of a demolition sequence plan?

Accepted Answer

Specify the order of structural element removal to maintain stability and worker safety

Answer

A demolition sequence plan defines the order in which structural elements are removed to control the demolition process and prevent unplanned collapse.

Question 2

Robotic demolition equipment is primarily deployed:

Accepted Answer

In confined spaces or high-hazard areas too dangerous for an operator

Answer

Robotic demolition machines are deployed in confined, low-headroom, or high-hazard environments where it is unsafe to place an operator inside.

Question 3

How does selective demolition differ from total demolition?

Accepted Answer

Selective demolition removes specific components while preserving the rest of the structure

Answer

Selective demolition targets specific components — walls, floors, or systems — for removal or salvage while leaving the remainder of the structure intact.

Question 4

What is the key structural hazard when demolishing a post-tensioned concrete floor system?

Accepted Answer

Stored tension in steel tendons that can release violently if improperly cut

Answer

Post-tensioned tendons are under significant prestress; improper cutting can cause sudden, violent release of stored energy, posing a serious safety hazard.

Question 5

In a pre-demolition structural assessment, what does a load path analysis determine?

Accepted Answer

How gravity and lateral loads are transferred through the structure to the foundation

Answer

A load path analysis traces how gravity and lateral loads flow through structural members to the foundation, informing the safe sequence of removal.

(CDS) Certified Demolition Supervisor Practice Test

(CDS) Certified Demolition Supervisor Practice Test

CDS CDS Structural Assessment & Demolition Methods 2