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Pound - Feet
KN - m
Tonf - m
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140000*(300)2
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Display the Results
Tabular Display
Graphically
Display
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base
supports
Set Display Options
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M11
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.
.
M22
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DiaphragmCenter of MassCenter of Rigidity
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Modify Lateral Load
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Ecc. Ratio All Diaph.)0.05
( )
0.05
:
EQX1.X Dir. + Eccen. Y
EQX2.X Dir. - Eccen. Y
EQY1.Y Dir. + Eccen. X
EQY2..Y Dir. - Eccen. X
Overwrite Eccentricities
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ma x
20%
avg
(Torsional Irregularity)
:
Torsional amplification
Factor at level x
max avg X I f 1.2 ....e 0.05 * L * A
.
Method A
34
st 1 t n T T C ( h )
t
C (
m
inch
....
Ft.)
Program Calculated
dy st
T 1.4T T Used isdy
T
dy st T 1.4T
T Used is st1.4T
dy st T 1.3T T Used is
dyT
dy st T 1.3T T Used is
st1.3T
User Defined
.
2
m ax
X
avg
A ..........1.2
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.
R5.5.
Per Code
A V
C ,C.
User Defined
A V
C ,C.
User DefinedA V
C ,CSeismic
Zone
dyT
stT
st1.3T
st1.4T
st1.3T
.st
T
dyT
used
T
User Defined.
Zone 4
(A,B,C)
Na ,
Nv.User Defined.
Zone 4.
I = 1.
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Analyze
Set Load Case to Run
Mass SourceDiaphragm Center of
Mass,
Calculate Diaphragm Centers of Rigidity
Center of Rigidity.
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Summary Report
Project Report
Model File: ETABS 2015, Revision 0
2015-01-29
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Mass X rom loads Mass Y rom loads
XCM X"X Center of Mass YCM X"Y Center of Mass
CumMassX X CumMassY X
XCCM
X YCCM Y
XCR
X"X Center of
Rigidity"YCR
Y"Y Center of
Rigidity"
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Check on Torsional Amplification Factors at Level X.
( Ax
.5%
EQX1EQX2EQY1EQY2.max
20%
avg
(Torsional Irregularity)
AX:
maxX.
avg
X.
2
max
X
avg
A 31.2
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Check on Participation Mass Ratio.
X 2.97
Y 6.94
um UX ) (
um UY
) (
ode 12um UX= 93.24 um UY=94.3 2
% ,9
. X
dyT ( x ) 1.482 sec
.
Y
dyT ( y ) 1.66 sec
ode Period
1
dyT ( y ) =1.66 sec
2dy
T ( x ) =1.482 sec
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Period Acceleration
0 Ca = 0.22
To = 0.1164 2 5 Ca = 0.55
Ts = 0.5818 2 5 Ca = 0.55
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ga/gag.
R
(
Plastic Limit.)
g 9.81
1.7836R 5.5
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(R)
. base shear
.
dyV
stV.
dy
VR)(
:
9 %
BC 97.
9 % .
99 % .
stdyused
011001001
01157011
UBC97011571
UBC9701177
UBC97011017017
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..
p(t) mu(t) ku(t)
, mk
Eigen Values 2
0k m
./ 2 TT
Eigen Vectors )(
.
.
) )
,
.
,
.,
EigenvectorsRITZ
(m , k)
:Exact Eigen
Solution
:
90%
Upper Bound
Solution
:
2
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Upper Bound
Solution
Lower Bound
Solution
:
RITZEigen Values
.
RITZ
Eigen Values
.
RITZ
Eigen Values
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1-Check on No. of Modes Participation Mass Ratio).9
um UX 98.15 )
um UY 98.95 )
2
2-Scaling
Compare between V
st
and V
dy
).
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157.651* 0.9 1.768
80.2527
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LOAD CASESDEAD DEAD LOAD
FC COVER LOAD
WALL WALL LOAD
LL LIVE LOAD < 480Kg/m2
LR ROOF LIVE LOAD
SL LIVE LOAD > 480Kg/m2
EQX Earth quick in X-DIRECTIONEQXP Earth quick in X+POSITIVE ECC
EQXN Earth quick in X+NEGATIVE ECC
EQY Earth quick in Y-DIRECTION
EQYP Earth quick in Y+POSITIVE ECC
EQYN Earth quick in Y+NEGATIVE ECC
:
EQ LOAD COMBINATIONSDL DEAD+FC+WALL
U1 1.4DL
U2 1.2DL+1.6(LL+SL)+0.5LR
E1 1.32DL+ 0.55LL+1.1SL+1.1 EQX
E2 1.32DL+ 0.55LL+1.1SL-1.1EQX
E3 1.32DL+ 0.55LL+1.1SL+1.1EQXPE4 1.32DL+ 0.55LL+1.1SL-1.1EQXP
E5 1.32DL+ 0.55LL+1.1SL+1.1EQXN
E6 1.32DL+ 0.55LL+1.1SL-1.1EQXN
E7 1.32DL+ 0.55LL+1.1SL+1.1EQY
E8 1.32DL+ 0.55LL+1.1SL-1.1EQY
E9 1.32DL+ 0.55LL+1.1SL+1.1EQYP
E10 1.32DL+ 0.55LL+1.1SL-1.1EQYP
E11 1.32DL+ 0.55LL+1.1SL+1.1EQYN
E12 1.32DL+ 0.55LL+1.1SL-1.1EQYN
E13 0.99DL + 1.1EQX
E14 0.99DL -1.1 EQX
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E15 0.99DL +1.1 EQXP
E16 0.99DL -1.1 EQXP
E17 0.99DL +1.1 EQXN
E18 0.99DL - 1.1EQXN
E19 0.99DL + 1.1EQY E20 0.99DL - 1.1EQY
E21 0.99DL +1.1 EQYP
E22 0.99DL -1.1 EQYP
E23 0.99DL + 1.1EQYN
E24 0.99DL - 1.1EQYN
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R Click
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