footing_final.xls

	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	R	S	T
1	31
2							ISOLATED FOOTING
3
4		DATA :
5				fcu =	250	kg/cm2		Column Dimensions :				Foundation level =				-1.50	m
6				fy =	3600	kg/cm2		b =	30	cm
7				N working =	300	ton		t =	360	cm
8				q all net =	17.5	t/m2
9				P.C. th =	30	cm
10
11			1	Area p.c=	18.86	m2
12				L P.C. =	6.00	m
13				B P.C. =	2.70	m
14
15			2	Dim of R.C.						7	Rft
16				L R.C. =	5.40	m					As I =	21.41	cm2		As min =		16.70	cm2
17				B R.C. =	2.10	m					As II =	55.07	cm2		As min =		42.93	cm2
18
19			3	q =	39.68	t/m2					As I =	11	F	16	/	2.10	m
20											As II =	28	F	16	/	5.40	m
21			4	Moment at Critical Sections
22				M I =	33.75	m.t.					As I =	6	F	16	/	m'
23				M II =	86.79	m.t.	take C1 =	5.00			As II =	6	F	16	/	m'
24				d I =	40.09	cm	J =	0.826
25				d II =	40.09	cm	choose F	16
26				take:
27				t =	60	cm
28				d =	53	cm
29
30			5	Check Punching
31				P u =	450.00	ton
32				Q p =	313.97	ton
33				q p =	5.97	kg/cm2	SAFE PUNCHING
34				qp cu =	7.53	kg/cm2
35
36			6	Check Shear
37				Q sh1 =	52.92	ton
38				Q sh2 =	136.07	ton
39				q sh1 =	4.75	kg/cm2
40				q sh2 =	4.75	kg/cm2	SAFE SHEAR
41				qsh cu =	6.29	kg/cm2
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100