SGD2333 - Stairs

What is the definition of stairs?

• An opening in a wall allowing the passage of light, sound and sometimes air

• A barrier by which an entry is closed and opened

• A series of steps that allow passage of movement in the same floor level

• A series of steps for passing from one floor level to another.

Which of the following is not a characteristic of stairs?

• Stairs may be straight, L-shape, circular or spiral

• Designed to withstand weather and outdoor environment

• Can be made up of timber, concrete or steel

• A passage that connects the different floor level

Which of the following is not the function of stairs

• Access from the outside into the interior of a building.

• Important linkage in the overall circulation scheme of a building.

• Provide safe and ease of travel to another floor with the right design

• Provide means for moving from one floor level to another

Which of the following is the wrong statement about riser?

• All risers should be the same height

• The part of the stair that helps you accomplish the height.

• The height of the riser can vary in a stair as long as not exceed 180mm

• The maximum height of a riser is 180mm

Which of the following is the right statement about handrail?

• The minimum height for handrail is 1100mm

• Minimum 900mm width stairs to have handrails on both sides of the stairs

• Minimum 4 risers need to have handrails

• Handrail cannot be continuous run throughout the stairs

Which of the following is the wrong statement about treads?

• The minimum length of a tread is 265mm

• All treads should be the same length

• The length part where people steps on

Which of the following is the right statement about the staircase component?

• Baluster described as all the balustrades and handrail together

• Landing is the horizontal projection to the front or edge of a tread

• Balustrade acts as a vertical member that infill between handrail and tread

• Stringers are the part of the stairs that will hold all the weight

Which of the following is not the characteristics of steel stairs?

• Designed as a one-way reinforced slab with steps on its upper surface.

• Steel channel sections serve as carriages and stringers.

• Treads may consist of precast concrete or concrete-filled steel pans

• Can be pre-engineered and prefabricated

Which of the following is the wrong statement about concrete stairs?

• Require careful analysis of load, span and support conditions

• Require structural engineer for final design requirements

• Comparable construction method with wood stairs

• Handrail supports may be anchored to the top or edge of the stair slab

Which of the following is the wrong statement about concrete stairs?

• Require steel reinforcement in the concrete slab

• Nosing can be customized to be embedded with a variety of finishes choice

• The side edge of the stair slab may be formed to be a curb or solid railing

• The stringers need to be cast into the structural beam of the wall