Transcription of 10 CHAPTER 10: STAIRCASES
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1. 10 CHAPTER 10: STAIRCASES . Introduction STAIRCASES provide means of movement from one floor to another in a structure. STAIRCASES consist of a number of steps with landings at suitable intervals to provide comfort and safety for the users. Some common types of stairs are shown in Figure These include straight-flight stairs, quarter-turn stairs, half-turn stairs, branching stairs, and geometrical stairs. (a) (b) (c). (d) (e). (f) (g). 2. (h) (i) (j). Figure : (a); (b) Straight flight stairs; (c) Quarter-turn stairs; (d). Half-turn stairs; (e) Branching stairs; (f) Open-well (half turn); (g).
Redesign the stair shown in Example (10.1) if it is a cantilever type of a clear span of 1.6 m. Solution: Minimum stair thickness required to satisfy deflection requirements is given by cm l h 16.0 10 160 min 10 = = = Let slab waist t be equal to 7.5 cm. Average step height is given as havg 16.5cm 16.0cm 0.8823 7.5 8 cos 7.5 =8+ = + = > a Shear ...
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