CPI Installation Techniques & Procedures 2

Question 1

When installing anchors in hollow walls, which type provides the greatest holding strength?

Accepted Answer

Toggle bolt

Answer

Toggle bolts spread load across a larger area on the back of hollow drywall, providing superior holding strength compared to other hollow-wall anchors.

Question 2

What is the primary purpose of applying a primer before installing adhesive-backed materials?

Accepted Answer

To improve adhesion by cleaning and sealing the substrate

Answer

Primer cleans the substrate surface, seals porous areas, and chemically prepares it so adhesive-backed materials bond properly.

Question 3

A technician is installing conduit through a fire-rated wall assembly. What is required at the penetration point?

Accepted Answer

Fire-rated intumescent sealant or fire stop collar

Answer

Fire-rated penetrations must be sealed with approved intumescent or fire stop products to maintain the wall's fire rating.

Question 4

When using a reciprocating saw to cut through an existing wall, what is the most critical safety step before cutting?

Accepted Answer

Scan for hidden utilities with a stud finder and cable detector

Answer

Scanning for hidden electrical wires, pipes, and structural members before cutting prevents injury and property damage.

Question 5

Which fastener installation technique is recommended when driving screws into hardwood near the edge to prevent splitting?

Accepted Answer

Pre-drill a pilot hole slightly smaller than the screw shank

Answer

Pre-drilling relieves wood fiber stress and prevents splitting when fastening near edges or ends of hardwood.

(CPI) Certified Professional Installer Practice Test

(CPI) Certified Professional Installer Practice Test

CPI Installation Techniques & Procedures 2