Question

Design a staircase for a two story building with the given loads: DL = 72 psf LL = 60 psf The building floor height = 8ft for a total height of 16 ft. The staircase design must comply with the A.D.A. requirement for a hospital building. Design calculations must be in english units (ft, inches, pnds etc).

Answer 1

1.DATA:
	number of steps in the flight=	8
	tread T =	270	mm
	Rise R=	130	mm
	Width of landing beams=	300	mm
	fck=	20	N/mm2
	fy=	415	N/mm2
	width of stair case b=	1000	mm
2.EFFECTIVE SPAN:
	Effective span =(no of steps *thread )+width of landing beam
	Effective span =	2460	mm=	2.46	m
	thickness of waist slab =span /20=	123	mm
	adopt overall depth = D=	123	mm
	effective depth=d=	98	mm=

	total dead load =	3.447379	KN/m
	service live load=	2.872816	KN/m
	total load=	6.320194	KN/m
	factored load = wu= 1.5*t.l =	9.48029126	KN/m
4.BENDING MOMENTS:
	maximum bending moment at centre of span is
			Mu =	0.125 WuL2
			Mu =	47.03409501	KN.m
5.CHECK OF DEPTH OF WAIST SLAB:
		Mu=0.138fckbd2
	by solving d =	130.5425	mm<	290	mm
			hence safe
6.MAIN REINFORCEMENTS:
							calculations
		Mu=0.87fy Ast d				0.1286307
						0.8713693
								0.9334716
		by solving Ast =	464.8969828	mm2			0.0665284
								464.89698
				dia of bar=	12	mm
				no of bar =	4.112677	nos		113.04
				so Ast =	464.897	mm2
		provide 12mm diameter bar at 200mm centres as mainreinforcement
7.DISTRIBUTION REINFORCEMENT:
	distribution reinforcement = 0.12 percent of cross section
			=	378	m Ally Wells Next > < Previous Related Solutions Design a staircase for a two story building with the given loads DL = 72 psf... Design a staircase for a two story building with the given loads DL = 72 psf and LL= 60 psf. The staircase design must comply with A.D.A. requirements for hospital buildings. if you're given a number of dead loads on a 4 story building and a floor... if you're given a number of dead loads on a 4 story building and a floor plan with beams. how do you find the total dead load and live load on each beam? the goal is setting up a shear stress and moment diagrams for each beam. say I was given a number of dead loads in psf and I'm supposed to find the total dead load and the live load. The Trump Tower is a 72-story luxury condominium building constructed at Springfield Plaza in Manhattan, New... The Trump Tower is a 72-story luxury condominium building constructed at Springfield Plaza in Manhattan, New York. 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