Bs

2.9 Staircase

2.9.1 Idealization

The idealization of the staircase is shown in Figure 2.16.

Figure 2.16 Idealization of staircase

Design as end span of a continuous beam. Calculations will be given for 1 m width.

2.9.2 Durability and fire resistance

As for floor slab, Section 2.3, 20 mm nominal cover will be satisfactory.

2.9.3 Loading

Average slab thickness on plan = Self-weight = 0.25 x 24 Finishes =

Characteristic dead load Characteristic imposed load = Design ultimate load

2.9.4 Analysis

Using coefficients in the Concise Eurocode

Moment at interior support

= 0.11

x

0 0

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