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

Table 5

The short-term deflection at midspan in the design results (∆_s) and the simulation results .

θ (°)	Lc (mm)	qL = 2 kN/m^2			qL = 3.5 kN/m^2			qL = 5 kN/m^2
		∆s (mm)	∆sFEM (mm)	n	∆s (mm)	∆sFEM (mm)	n	∆s (mm)	∆sFEM (mm)	n
25	3910	10.1	4.7	2.1	9.9	4.9	2.0	9.7	5.2	1.9
	4560	11.7	6.4	1.8	11.5	6.6	1.7	12.1	7.8	1.6
	4890	12.8	7.5	1.7	13.3	8.3	1.6	13.0	8.5	1.5
	5540	14.7	9.8	1.5	14.3	9.9	1.4	15.0	10.6	1.4
	5870	16.2	10.8	1.5	15.7	10.9	1.4	15.7	11.5	1.4
30	4090	11.4	5.8	2.0	11.1	6.0	1.9	11.0	6.3	1.7
	4380	12.1	6.7	1.8	12.6	7.4	1.7	12.4	7.6	1.6
	4960	14.2	8.6	1.7	13.9	8.9	1.6	13.6	9.1	1.5
	5550	16.0	10.4	1.5	15.5	10.6	1.5	15.2	10.7	1.4
	6130	16.6	11.7	1.4	17.3	12.4	1.4	17.2	13.1	1.3
35	3930	10.9	5.2	2.1	10.7	5.6	1.9	11.7	6.9	1.7
	4450	12.7	7.3	1.7	13.3	8.0	1.7	13.0	8.2	1.6
	4980	14.6	8.8	1.7	14.3	9.0	1.6	14.8	10.2	1.5
	5500	15.9	10.0	1.6	16.0	11.2	1.4	15.7	11.3	1.4
	6030	17.9	12.4	1.4	17.4	12.5	1.4	18.3	13.4	1.4

Note. n = ∆_s/∆_sFEM.