What is an ordinary step of rectangular shape in plan?
🔬 Understanding Step Terminology
While most people think of a "step" as a single unit, in architecture and construction, there are specific names for different types of steps based on their shape and function within the staircase.
The question asks to identify the term for a standard, straight, rectangular step. These are the most common type of steps used in a straight flight of stairs.
⚖️ Detailed Analysis of the Options
Let's distinguish between the different terms provided.
(a) Flier
Why it's correct: A flier is the technical term for an ordinary, rectangular step that has a uniform width and is parallel to the steps above and below it. These are the standard steps that make up a straight run or flight.
(b) Going
Why it's incorrect: The "going" is a measurement, not a type of step. It refers to the horizontal distance between the front faces of two consecutive risers. It essentially defines the depth of a tread.
(c) Tread
Why it's incorrect: The "tread" is the horizontal top surface of any step where the foot is placed. While a flier has a tread, "tread" describes a component of a step, not the shape of the step itself in plan view.
(d) Riser
Why it's incorrect: The "riser" is the vertical component of a step. It's the board or surface that forms the "face" of the step. It is a part of a step, not the type of step.
📋 Additional Information: Other Types of Steps
Besides fliers, several other specialized steps are used in staircase construction, primarily to change direction or for decorative purposes:
- Winder: A tapering step used to change the direction of the flight. Unlike fliers, winders are not rectangular.
- Bullnose Step: Often used as the bottom step of a flight, it has one or both ends finished in a circular quadrant shape in plan.
- Commode Step: A step with a curved rise and tread, often used for elegant or sweeping staircases.
- Splayed Step: A step with one or both ends cut at an angle (splayed) in plan view.
- Dancing Step (or Balanced Step): These are winders that are designed to be more uniform in width near the narrow end to make the turn safer and more comfortable.
- Round-Ended Step: Similar to a bullnose step, but its ends are semicircular in plan.