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

Table 4

The required thickness and the steel area in the stair slabs.

θ (°)	Lc (mm)	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)
25	3910	140	662	140	785	140	913
	4560	170	763	170	894	160	1211
	4890	180	926	180	984	180	1129
	5540	210	1062	210	1228	210	1271
	5870	230	1017	230	1168	220	1519
30	4090	150	707	150	830	150	958
	4380	160	847	160	901	160	1037
	4960	190	861	190	997	190	1136
	5550	220	971	220	1114	220	1260
	6130	250	1199	250	1240	240	1590
35	3930	150	675	150	788	140	1080
	4450	170	862	170	909	170	1037
	4980	200	867	200	995	190	1303
	5500	230	961	220	1248	220	1406
	6030	250	1210	250	1369	250	1393