CALCULATION CALCULATION NO. SHEET No. PROJECT EARTHQUAKE DESIGN - DYNAMIC SCALING FACTORS · Seismic design Parameters as per UBC 97 Seismic Zone = 2 Ductility Factor UBC97 Tbl 16-N R = 5.5 Importance factor UBC97 Tbl 16-K I = 1.00 Seismic coefficient UBC97 Tbl 16-Q = 0.18 Seismic coefficient UBC97 Tbl 16-R = 0.25 Total Seismic dead load W = 26379.5 kN Total height of the structure = 21 Numerical coefficient = 0.0488 Soil Profile = Excitation angle from x-axis = · Elastic fundamental period of vibration (Method A) = 0.478723 1.3TA = 0.670212 > 0.40 Therefore, T = 0.404 s < 0.70 · Total Design Base Shear = 2968.725 kN · The total design base shear need not exceed = 2158.323 kN (max. V) · The total design base shear shall not be less than = 522.3 kN (min. V) Therefore,use V = 2158 kN DYNAMIC BASE SHEAR FROM RSA ETABS: · For X-direction Period of Vibration from method B = 0.404 s < 1.3TA = 2232.1 kN = 2232.1 kN = 3156.7 kN Scale factor SF = 0.684 · For Y-direction Period of Vibration from method B = 7.777 s > 1.3TA = 19740.9 kN = 6089.5 kN = 20658.8 kN Scale factor SF = 0.104 Hyder Consulting Middle East Ltd. & W.S. Atkins Overseas(JV) P.O.Box 1854 Doha, State of Qatar Tel. +974 4429 555 Fax +974 4428 874 Ca Cv hn Ct TB VX VY VXY TB VX VY VXY
ULS DesignHyder Consulting Middle East Ltd.& W.S. Atkins
Overseas(JV)P.O.Box 1854Doha, State of QatarTel. +974 4429 555Fax
+974 4428 874CALCULATIONCALCULATION NO.SHEET No.PROJECTEARTHQUAKE
DESIGN - DYNAMIC SCALING FACTORSSeismic design Parameters as per
UBC 97Seismic Zone=2Ec=30Ductility FactorUBC97 Tbl
16-NR=5.5Ecq=39.2Importance factorUBC97 Tbl
16-KI=1.00=39200000000Seismic coefficientUBC97 Tbl
16-QCa=0.18Ieff=1500Seismic coefficientUBC97 Tbl 16-RCv=0.25Total
Seismic dead loadW=26379.5kNTotal height of the
structurehn=21Numerical coefficientCt=0.0488Soil Profile=Excitation
angle from x-axis=Elastic fundamental period of vibration (Method
A)=0.47872299961.4TA=0.67021219941.3TA=0.62233989941.3TA=0.6702121994>0.40Therefore,
T=0.404 s< 0.70Total Design Base Shear=2968.7253820703kNThe
total design base shear need not exceed=2158.3227272727kN(max.
V)The total design base shear shall not be less than=522.3kN(min.
V)Therefore,use V=2158kNDYNAMIC BASE SHEAR FROM RSA ETABS:For
X-directionPeriod of Vibration from method BTB=0.404s<
1.3TAVX=2232.1kNVY=2232.1kNVXY=3156.7kNScale factorSF=0.684For
Y-directionPeriod of Vibration from method BTB=7.777s>
1.3TAVX=19740.9kNVY=6089.5kNVXY=20658.8kNScale factorSF=0.104
DOCUMENT No. (Project/ Doc)SHEET No.1 OFPROJECT TITLE
EQ DriftHyder Consulting Middle East Ltd.& W.S. Atkins
Overseas(JV)P.O.Box 1854Doha, State of QatarTel. +974 4429 555Fax
+974 4428 874CALCULATIONCALCULATION NO.SHEET No.PROJECTEARTHQUAKE
DESIGN - DYNAMIC SCALING FACTORSSeismic design Parameters as per
UBC 97Seismic Zone=2Ec=30Ductility FactorUBC97 Tbl
16-NR=5.5Ecq=39.2Importance factorUBC97 Tbl
16-KI=1.00=39200000000Seismic coefficientUBC97 Tbl
16-QCa=0.18Ieff=1500Seismic coefficientUBC97 Tbl 16-RCv=0.25Total
Seismic dead loadW=4903463kNNumerical coefficientCt=0.0488Soil
Profile=Excitation angle from x-axis=Total Design Base ShearDYNAMIC
BASE SHEAR FROM RSA ETABS:For X-directionPeriod of Vibration from
method BTB=9.453sV=23578kNVX=6173.7kNVY=19808.1kNVXY=20747.9kNScale
factorSF=1.136For Y-directionPeriod of Vibration from method
BTB=7.777sV=28659kNVX=19740.9kNVY=6089.5kNVXY=20658.8kNScale
factorSF=1.387
DOCUMENT No. (Project/ Doc)SHEET No.1 OFPROJECT TITLE
