Project Three Star Hotel Building Date

Description Column Design By

jamal Chkd

- designCOLUMN C1A- Column Design According to EBCS 2 - 1995.

Lc2

h

Lc1

b

Lc3

Material Properties

Concrete - Grade C-25 Steel - Grade S300

Fck 20,000 kpa [EBCS 2 Table 2.3] Fyk 300,000 kpa

Fctk 1,500 kpa [EBCS 2 Table 2.4] PSF 1.15

PSF 1.5 [EBCS 2 Table 3.1] Fyd 260,870 kpa

Fcd 11333.33 kpa Es 200,000 kpa

Fctd 1,000 kpa As (min) 0.00072 [EBCS-2 7.2.4.2]

Ecm 29,000 kpa [EBCS 2 Table 2.5] As (max) 0.0072 [EBCS-2 7.2.4.2]

Analysis Result: Structure Classification:

Axial Mom. x-x Mom y-y

2783.82 -2.76 -1.24

2783.82 15.41 59.48

Dimensions in x-x direction: Dimensions in y-y direction:

Depth Width Depth Width

B1 = 0.30 0.30 B1 = 0.30 0.30

B2 = 0.30 0.30 B2 = 0.30 0.30

B3 = 0.00 0.00 B3 = 0.00 0.00

B4 = 0.00 0.00 B4 = 0.00 0.00

C1 = 0.30 0.30 C1 = 0.30 0.30

C2 = 0.30 0.30 C2 = 0.30 0.30

C3 = 0.00 0.00 C3 = 0.00 0.00

Lb1 = 4.09 Lb1 = 4.40

Lb2 = 4.09 Lb2 = 2.70

Lc1 = 2.00 Lc1 = 2.00

Lc2 = 2.85 Lc2 = 2.85

Lc3 = 0.00 Lc3 = 0.00

1

2

Ib1 Ib2

Ib3 Ib4

centerline of nearby column

column

Lb1 Lb2

Second-order global elastic analysis was done. Therefore both sway and

non-sway are taken care of.

column elevation

Project Three Star Hotel Building Date

Description Column Design By

jamal Chkd

Limits of Slenderness:

EBCS - 2, 4.4.6

= -0.179 = -0.021

54.478 50.521

But, the slenderness ratio is:

Ag = 0.090

l = i = Radius of gyration = Ig = 0.001 EBCS-2, 4.4.5

= 0.087

Le =Effective buckling length

Effective Buckling Length:

About x-x direction. About y-y direction.

Ic1 = 0.00068 Ic1 = 0.00068 Ic1 = 0.00068 Ic1 = 0.00068

Ic2 = 0.00068 Ic3 = 0.00068 Ic2 = 0.00068 Ic3 = 0.00000

Ib1 = 0.00068 Ib3 = 0.00000 Ib1 = 0.00068 Ib3 = 0.00000

Ib2 = 0.00068 Ib4 = 0.00000 Ib2 = 0.00068 Ib4 = 0.00000

a1 = 1.740 a2 = 1.000 a1 = 1.424 a2 = 1.000

am = 1.370 am = 1.212

- the effective buckling length:

Le = 1.631 Le = 1.602

- Slenderness ratio:

l = 18.837 Not Slender l = 18.502 Not Slender

Ignore Secondary Effects Ignore Secondary

Effect

£l

g

g

A

I

i

Le

LLLm

m

e 7.08.0

4.0³

+

+=

a

a

2

21 aaa

+=m

2211

2211

1

bbbb

cccc

LILI

LILI

+

+=a

4433

3311

2

bbbb

cccc

LILI

LILI

+

+=a

2

1

M

M

£l

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2

12550M

Ml

2

1

M

M

Project Three Star Hotel Building Date

Description Column Design By

jamal Chkd

Design Actions:

Calculate Eccentricities in the x-x Direction Calculate Eccentricities in the y-y Direction

Total = Total =

ee = max of 0.6e 02 + 0.4e 01 ee = max of 0.6e 02 + 0.4e 01

0.4e 02 0.4e 02

e01 = -0.0010 e01 = -0.0004

e02 = 0.0055 e02 = 0.0214

ee = 0.0029 ee = 0.0126

ea = ea =

= 0.02 = 0.02

e2 = 0.00 e2 = 0.00

etot = 0.0229 etot = 0.0326

Nsd = 2783.820 kn

Msd x-x = 63.818 kn-m

Msd y-y = 90.868 kn-m

Reinforcement Calculation:

Cover ratio = 0.1

nsd = 2.8 msd,x-x = 0.209 msd,y-y = 0.297

w = 0.2 EBCS 2 - 1995: Part 2 Biaxial Chart No. 10

As,tot = 0.000782 m2

As,tot/8 = 0.000098 m2

Use 8 f 12 bars

2eeee aetot ++=2eeee aetot ++=

mmLe 200300

³ mmLe 200300

³ mmLe 200300

³ mmLe 200300

³

ccd

sdsd

Af

N=

hAf

M

ccd

xxsd

xxsd

-

- =,

,mbAf

M

ccd

yysd

yysd

-

- =,

,m

yd

cdctots

f

fAA

w=,

analysis and

.

Ignore Secondary