H5 - Describe Curved Stairs - LT #5 Flashcards
What type of stairs fall into the category of curved stairs?
Circular, elliptical & spiral
What is a conical stair?
Stair with curved treads that have equal runs along the length.
What type of string is used in curved stairs?
Free-Standing, supported by walls, metal wood & concrete.
How are curved stairs designed?
Building code, angle of turn, starting points & center point.
Circular stairs can be free-standing when built from:
Welded steel stringers or laminated wooden stringers. Can also be bult without stringers by having walls underneath or on the sides to support them.
The inside of circular stairs can be supported how?
By a wall framed directly below the stair or a laminated stringer.
Circular stairs are designed based on:
Total rise, the total angle of turn, width of the stairs and minimum tread width.