Calculation of Hydrodynamic Pressures on Walls of Rectangular Tank

7/24/2019 Calculation of Hydrodynamic Pressures on Walls of Rectangular Tank

1/12

RECTANGULAR OVERHEAD WATER TANKS [ACNPUT PARAMETERS

9.810

25 24.500

Design depth of water tank = 3.250

6.100

6.1000.250

3.550

apacity of !erhead "ater tank = 120.000

2.49#

1.000

1.##5

1.219

11##.200

6#0.221

2.216

#.860

1.3#6

0.09##

%p&'si!e (i%e period is gi!en )y* = 56.369

pectra' ,%p'i-cation actor/period dependent for i%p&'si!e co%ponent of horionta' %otion

0.085

3

(ype D

1.00

(ype D

3

1

nit weight of +tored 'i&id =i.e. "ater

w

nit wt. of Concrete c=i.e.

HL

nside c'ear 'ength of ect. (ank perpendic&'ar to 7 dir. B =

nside c'ear 'ength of ect. (ank para'e'' to 7 dir. L ="a'' thickness of !erhead "ater tanks t

w=

nner C'ear "a'' height of !erhead "ater tank = Hw

ass density of Concrete !

"#=

ass density of stored 'i&id L!

w"#=

eight fro% )ase of wa'' to the C: of the tank +he'' $w=

t. a)o!e )ase of wa'' to the C: of i%p&'si!e 'atera' force hi=

%p. ass of +tored 'i&id per &nit width of ect. (ank wa'' %&= ;"

i


2/12

0.000 % fro% )ase = 31.883

0.323 % fro% )ase = 28.#140.646 % fro% )ase = 25.545

0.969 % fro% )ase = 22.3##

1.292 % fro% )ase = 19.208

1.615 % fro% )ase = 16.039

1.938 % fro% )ase = 12.8#1

2.261 % fro% )ase = 9.#02

2.584 % fro% )ase = 6.533

2.90# % fro% )ase = 3.3653.25 % fro% )ase = 0.000

F1.##5 % fro% )ase = 1.615

= 0.#16

.) CALCULATION O* H+DROSTATIC PRESSURE ,$-

ON WALSL O* TANK

ydrostatic press&re Ehy

F ht.=


F ht.=


F ht.=


F ht.=


F ht.=


F ht.=


F ht.=


F ht.=


F ht.=


F ht.=


F ht.=

.) CALCULATION O* INERTIAL PRESSURE /w-

ON WALLS O* TANK


3/12

%p&'si!e orce is gi!en )y the 7>pression = = 11.39#

he $%p'&si!e press&re on the wa''s is gi!en )y the fo''owing e>pression

%p&'si!e Eress&re on wa''s F 0.000 % fro% )ase = 3.068

%p&'si!e Eress&re on wa''s F 0.323 % fro% )ase = 2.80#




%p&'si!e Eress&re on wa''s F 1.615 % fro% )ase = 1.#62

%p&'si!e Eress&re on wa''s F 1.938 % fro% )ase = 1.500%p&'si!e Eress&re on wa''s F 2.261 % fro% )ase = 1.239

%p&'si!e Eress&re on wa''s F 2.584 % fro% )ase = 0.9##

%p&'si!e Eress&re on wa''s F 2.90# % fro% )ase = 0.#16


.) CALCULATION O* IMPULSIVE PRESSURE /&-ON WALLS O* TANK


4/12

on!ecti!e orce is gi!en )y the 7>pression = = 231.904

= 536.1#2

on!ecti!e (i%e period is gi!en )y the e>pn = 2.885

"here = 5.3#9

pectra' ,%p'i-cation actor/period dependent for i%p&'si!e co%ponent of horionta' %otion

= 0.#21

= 1.924

he $%p'&si!e press&re on the wa''s is gi!en )y the fo''owing e>pression




%p&'si!e Eress&re on wa''s F 0.969 % fro% )ase = 2#.#20



%p&'si!e Eress&re on wa''s F 1.938 % fro% )ase = 39.4#4


%p&'si!e Eress&re on wa''s F 2.584 % fro% )ase = 4#.311

%p&'si!e Eress&re on wa''s F 2.90# % fro% )ase = 51.229


.) CALCULATION O* CONVECTIVE PRESSURE /-

ON WALLS O* TANK

&i!a'ent %ass of Con!ecti!e co%p. of stored 'i&id Wis gi!en )y fo''owing e>pression

or Con!ecti!e (i%e period G 2.4 +ec

eight a)o!e the )ase of wa'' to C: of Con!ecti!e 'atera' orce $is gi!en )y


5/12


6/12

360.3]

%

%

%%

%

%

%

5.644

HI

HI

f water

HI


7/12

HI


8/12

HI

HI


9/12

HI

HI

ec

f water

%

HI


10/12


11/12


12/12

Calculation of Hydrodynamic Pressures on Walls of Rectangular Tank

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