DHT PRACTICE TEST EXAM QUESTIONS AND ANSWERS

DHT PRACTICE TEST EXAM QUESTIONS AND ANSWERS
1

What is the typical anchor type used on a knocked-down drywall frame?

Multi-purpose

Compression

Wood Stud

Steel Stud - CORRECT ANSWER✅✅✅Compression



2

What is the rabbet dimension of an equal rabbeted frame for a 1-3/4-inch wood door?

1-15/16"

2-1/8"

1-3/16"

1-9/16" - CORRECT ANSWER✅✅✅1-15/16"



What is the maximum hourly fire rating available for a flush solid core wood door?

3 hour

60 minute

45 minute

90 minute - CORRECT ANSWER✅✅✅90 minute? (not 3 hours)



4

On a secure right hand swing opening, removable glazing bead on doors or sidelight frames should be
installed on the

Pull or push side

Corridor side of opening

Pull side of opening

Push side of opening - CORRECT ANSWER✅✅✅Pull side of opening

, Blast resistant doors ratings are measured in units of

PSI

Levels

Grades

PSL - CORRECT ANSWER✅✅✅not grades



6

According to SDI's publication, Recommended Selection and Usage Guide for Standard Steel Doors and
the below chart, what type hollow metal door would be required if the project called for Level 3, Model
2?



Extra Heavy Duty, 16 gauge, Seamless

Heavy Duty, 18 gauge, Full Flush

Standard Duty, 20 gauge, Seamless

Extra Heavy Duty, 16 gauge, Stile & Rail - CORRECT ANSWER✅✅✅Extra Heavy Duty, 16 gauge,
Seamless



When using an electric strike on a fire rated openings, the strike must be

Normally open

Fail secure

Fail open

Fail safe - CORRECT ANSWER✅✅✅Fail secure



In order to change higher AC voltage to a lower AC voltage you must use a

Rectifier

Power supply

Transformer

Switch - CORRECT ANSWER✅✅✅Power supply