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

Table 6

The required thickness and the steel area in the stair slabs when θ = 30°.

Lc(mm)	Proposed design method						Conventional method
	qL = 2 kN/m^2		qL = 3.5 kN/m^2		qL = 5 kN/m^2		qL = 2 kN/m^2		qL = 3.5 kN/m^2		qL = 5 kN/m^2
	t(mm)	As(mm^2)	t(mm)	As(mm^2)	t(mm)	As(mm^2)	t(mm)	As(mm^2)	t(mm)	As(mm^2)	t(mm)	As(mm^2)
4090	150	707	150	830	150	958	170	920	170	972	170	1111
4380	160	847	160	901	160	1037	180	1012	180	1173	180	1338
4960	190	861	190	997	190	1136	210	1161	210	1212	210	1371
5550	220	971	220	1114	220	1260	240	1210	240	1378	230	1770
6130	250	1199	250	1240	240	1590	270	1375	270	1554	260	1972