Unit 8

Question 1

What is required on horizontal hall doors to keep the door panel closed in position if the primary guiding means fail as per ASME A17.1/CSA B44?

Answer 1

Retainers

Question 2

How should door tracks be installed?

Answer 2

Exactly level & parallel w/ sill

Question 3

Why are eccentrics required on door hangers as per ASME A17.1/CSA B44?

Answer 3

Prevent hanger sheave from disengaging from track

Question 4

How must all hall doors interlocks be wired?

Answer 4

In series

Question 5

How should centre opening doors be hung?

Answer 5

Plumb at centre of opening

Question 6

Why are sills grouted?

Answer 6

Ensure load bearing capacity

Question 7

What is the purpose of the header

Answer 7

Support hoistway entrance, door hangers, panels & track

Question 8

Why would it be advised to run a string across all door frames in a multi-bank hoistway?

Answer 8

Ensure frames are aligned to each other

Question 9

What must hall door closers ensure?

Answer 9

Hall door is self closing throughout whole travel of door

Question 10

What is an acceptable means to have the locking member of the interlock hold the door in the locked position as per ASME A17.1/CSA B44?

Answer 10

Gravity, restrained compression spring, positive linkage