Door Hardware and Exit Devices Flashcards

What is the primary function of a door closer in commercial applications?

Answer: To control closing speed and ensure the door returns to the closed position after each use

A door closer controls the sweep and latch speed of a door, ensuring it returns completely to the closed and latched position after every opening.

Which ANSI/BHMA grade designation indicates the highest level of commercial door hardware durability?

Answer: Grade 1

ANSI/BHMA Grade 1 is the highest grade, subjected to the most rigorous cycle and load testing and required for heavy commercial applications.

What does the term 'handed' mean when referring to door hardware?

Answer: The hardware is designed for a specific left-hand or right-hand door swing orientation

'Handed' hardware is manufactured for a specific swing direction and cannot be reversed without modification, so the correct hand must be determined before ordering.

A mortise lock is installed by:

Answer: Routing a rectangular pocket into the edge of the door

A mortise lock is housed in a rectangular cavity (mortise pocket) cut into the door edge, keeping the lock body concealed within the door thickness.

What is the purpose of a door coordinator installed on a pair of doors?

Answer: To ensure the inactive leaf closes before the active leaf

A door coordinator controls closing sequence so the inactive leaf (with the overlapping astragal) always closes first, preventing the active leaf from binding against it.

What is the primary function of a strike plate in a door assembly?

Answer: To provide the recessed opening that accepts and retains the latchbolt when the door is closed

The strike plate is mortised into the door frame and contains the opening that the latchbolt seats into, keeping the door securely closed.

Which type of hinge allows a door to swing both inward and outward from a centered closed position?

Answer: Double-acting hinge

A double-acting hinge (also called a double-swing or saloon hinge) allows the door to swing in both directions, returning to center when released.