STAIR.XLS

	B	C	D	E	F	G	I	J	K	L	M	N	U
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2	KING MONGKUT 'S INSTITUE OF TECHNOLOGY THONBURI
3	RC-I EXCEL											Reinforced Concrete Design by Working Stress Method
4	Stair						Stair Code		S1
5	Project	RC-DESIGN					File Name		EX1
6	Engineer	THARIT					Date		25-Dec-25
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8	STAIR DATA
9	Concrete		fc'	=	175	ksc	fc	= 0.45fc'		=	78.75	ksc
10	Steel		fy	=	3,000	ksc	fs	= 0.50fy		=	1,500	ksc
11	Span length		L	=	5.00	m	Es			=	2,040,000	ksc
12	Height		H	=	2.74	m	Ec	= 15210fc'1/2		=	201,209	ksc
13	Tread		l	=	0.26	m	n	= Es/Ec		=	10.14
14	Riser		h	=	0.19	m	k	= 1/(1+fs/nfc)		=	0.347
15	Live Load		LL	=	300	kg/m2	j	= 1-k/3		=	0.884		6
16	Finish Load		FL	=	0	kg/m2	R	= 0.5fckj		=	12.09	ksc	9
17	Thickness		t	=	0.15	m	MR	= Rbd2		=	#NAME?	kg-m	10
18	Covering		d'	=	0.040	m	Total Load on Stair		W	=	974	kg/m2	12
19													12
20			Effective Depth			d	=	#NAME?	m				15
21			Require Thickness			t : req	=	0.199	m				16
22			<< Try New Thickness >>										19
23													19
24	Checking Moment and Shear Force												20
25	Moment of Main Steel		M	=	3,043	kg-m	Maximum Shear Force Vmax			=	4,869	kg	22
26	Resisting Moment		MR	=	#NAME?	kg-m	Allowable Shear Force Vc			=	#NAME?	kg	25
27	#NAME?						#NAME?						25
28			As. Required of Main Steel				=	#NAME?	cm2/m				28
29													28
30	REINFORCEMENT DESIGN
31		Main Steel Reinforcement						Temperature Steel Reinforcement
32		Diameter (mm)			Spacing (m)			Diameter (mm)			Spacing (m)
33	M-max.	#NAME?			#NAME?		Use	#NAME?			#NAME?
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35	Checking Bond Stress						Devlopment Length
36	Bond Stress			=	#NAME?	ksc	Development Length for RB			=	#NAME?	m
37	Allowable Bond Stress for RB			=	#NAME?	ksc	Development Length for DB			=	#NAME?	m
38	Allowable Bond Stress for DB			=	#NAME?	ksc
39	#NAME?						Load on Beam			=	4,869	kg/m
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