The outer projecting edge of a tread is termed as
- ALanding
- BBalusters
- CNosingCorrect
- DFlight
Solution
Concept
Definition of nosing in staircase design
Formula
NONE
Step-by-step solution
1. In staircase construction, the tread is the horizontal upper surface of a step. 2. The outer rounded or projecting edge of the tread beyond the riser face is called the nosing. 3. Balusters are vertical supports for handrails, and a flight is a continuous series of steps between landings. Answer: C
Explanation
Nosing refers to the rounded or flat edge of a stair tread that extends beyond the vertical riser below it. It provides extra foot space and protects the edge of the step from wear while enhancing user safety. Thus, the outer projecting part of the tread is called the nosing.
Why the other options are wrong
A) A landing is a horizontal platform provided between two flights of stairs. B) Balusters are vertical members supporting the handrail. D) A flight is an uninterrupted series of steps between landings.
Shortcut
Nosing is the rounded edge that noses out at the front of a stair tread.
Common mistake
Confusing nosing with the riser, tread surface, or landing of a staircase.
Correct answer: C) Nosing