# Doors, Stairs, and Hallways Flashcards

If the egress door does not swing over the exterior landing, how far below the threshold can the landing be?

7 3/4 inches.

Can a doorway interrupt the stairwell’s continuity.

Yes.

The width of the landing should not be less than the width of what?

The door.

What depth should every landing measure in the direction of travel?

At least 36-inches.

The required width of a hallway is?

At least 36”.

What is the minimum tread depth on a regular stair?

10-inches.

What width should a stairway measure above the handrail?

36-inches

The minimum concentrated load on a 4 square inch area stair tread is ?

300 pounds

If the non-egress door swings in, and there’s no more than two risers, there’s no need for what?

An outside landing

What is the minimum tread depth of a winder stair measured at any point?

6 inches

What is the maximum riser height for a winder stair?

7 3/4 inches

What diameter handrail does a Spiral staircase require?

1 1/4 to 2 inches

A handrail on one side is needed if you have this many risers?

4 or more

A handrail should allow the user to maintain a consistently secure grip without doing this?

Twisting the fingers or letting go

If there’s only one handrail, the minimum clearance at and below the rail is?

31 and 1/2 inches