A Novel Method for Deflection Calculation of Reinforced Concrete Stair Slabs considering Step Stiffness

Table 1

Summary of t_a with different θ and t when T is 630 mm.

t(mm)	Additional thickness ta (mm) with different inclined angle θ (°)
	20°	22°	24°	26°	28°	30°	32°	34°	36°	38°	40°
60	14.2	14.6	15.1	15.5	15.9	16.2	16.6	16.9	17.3	17.6	18.0
70	15.2	15.7	16.2	16.6	17.1	17.4	17.8	18.2	18.6	18.9	19.3
80	16.1	16.6	17.1	17.6	18.0	18.4	18.8	19.2	19.6	20.0	20.4
90	16.8	17.4	17.9	18.4	18.8	19.3	19.7	20.1	20.5	20.9	21.3
100	17.4	18.0	18.5	19.1	19.5	20.0	20.4	20.8	21.2	21.6	22.0
110	17.9	18.5	19.1	19.6	20.1	20.6	21.0	21.4	21.9	22.3	22.7
120	18.4	19.0	19.6	20.1	20.6	21.1	21.5	22.0	22.4	22.8	23.2
130	18.8	19.4	20.0	20.6	21.1	21.5	22.0	22.4	22.9	23.3	23.7
140	19.1	19.8	20.4	20.9	21.5	21.9	22.4	22.9	23.3	23.7	24.2
150	19.4	20.1	20.7	21.3	21.8	22.3	22.8	23.2	23.7	24.1	24.6
160	19.7	20.4	21.0	21.6	22.1	22.6	23.1	23.6	24.0	24.5	24.9
170	19.9	20.6	21.2	21.8	22.4	22.9	23.4	23.9	24.3	24.8	25.2
180	20.1	20.8	21.5	22.1	22.6	23.2	23.7	24.1	24.6	25.1	25.5
190	20.3	21.0	21.7	22.3	22.9	23.4	23.9	24.4	24.9	25.3	25.8
200	20.5	21.2	21.9	22.5	23.1	23.6	24.1	24.6	25.1	25.6	26.0
210	20.7	21.4	22.1	22.7	23.3	23.8	24.3	24.8	25.3	25.8	26.2
220	20.8	21.6	22.2	22.9	23.5	24.0	24.5	25.0	25.5	26.0	26.4
230	21.0	21.7	22.4	23.0	23.6	24.2	24.7	25.2	25.7	26.2	26.6
240	21.1	21.9	22.5	23.2	23.8	24.3	24.8	25.4	25.9	26.3	26.8
250	21.2	22.0	22.7	23.3	23.9	24.5	25.0	25.5	26.0	26.5	27.0
260	21.3	22.1	22.8	23.5	24.0	24.6	25.1	25.6	26.2	26.6	27.1