Civil Engineering Engineering

Steel Staircase Design Calculation [PDF]


Staircases provide means of movement from one floor to another in a structure. Staircases consisting of a number of steps with landings at suitable intervals to provide comfort and safety for the users. These include straight-flight stairs, quarter-turn stairs, half-turn stairs, branching stairs, and geometrical stairs.

Technical Terms For Staircase

The definitions of some technical terms, which are used in connection with the design of stairs, are
a. Tread or Going: horizontal upper portion of a step.
b. Riser: vertical portion of a step.
c. Rise: vertical distance between two consecutive treads.
d. Flight: a series of steps provided between two landings.
e. Landing: a horizontal slab provided between two flights.
f. Waist: the least thickness of a stair slab.
g. Winder: radiating or angular tapering steps.
h. Soffit: the bottom surface of a stair slab.
i. Nosing: the intersection of the tread and the riser.
j. Headroom: the vertical distance from a line connecting the nosings of all treads and the soffit above.

See Also
Cold-Formed Steel Shapes

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