Earth 0207-eq.static-egy1993
16
2.7. Equivalent 2.7. Equivalent Static Static Load Load Method Method EARTHQUAKE EARTHQUAKE ENGINEERING ENGINEERING 2.7.1. Egyptian Code 2.7.1. Egyptian Code 2.7.2. UBC Code 2.7.2. UBC Code
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Transcript of Earth 0207-eq.static-egy1993
2.7. Equivalent 2.7. Equivalent Static Static Load MethodLoad Method
EARTHQUAKEEARTHQUAKE ENGINEERINGENGINEERING
2.7.1. Egyptian Code2.7.1. Egyptian Code
2.7.2. UBC Code 2.7.2. UBC Code
2.7. Equivalent Static Load Egyptian Code
Prof.Dr. Osman Shaalan Earthquake Engineering Dr. Tharwat Sakr2
Base ShearBase Shear
W
W
W
W
1
4
2
1
H
H
H
H
1
3
4
2
V=Z.I.K.C.S.W
Z Zone Factor
I Importance FactorK Structural System Factor
C Structure Factor
S Soil Factor
W Design Weight
Base Shear
2.7. Equivalent Static Load Egyptian Code
Prof.Dr. Osman Shaalan Earthquake Engineering Dr. Tharwat Sakr3
Zone FactorZone Factor
2.7. Equivalent Static Load Egyptian Code
Prof.Dr. Osman Shaalan Earthquake Engineering Dr. Tharwat Sakr4
Importance Importance FactorFactor
2.7. Equivalent Static Load Egyptian Code
Prof.Dr. Osman Shaalan Earthquake Engineering Dr. Tharwat Sakr5
Structural System Structural System FactorFactor
2.7. Equivalent Static Load Egyptian Code
Prof.Dr. Osman Shaalan Earthquake Engineering Dr. Tharwat Sakr6
Structure FactorStructure Factor
2.7. Equivalent Static Load Egyptian Code
Prof.Dr. Osman Shaalan Earthquake Engineering Dr. Tharwat Sakr7
Soil FactorSoil Factor
2.7. Equivalent Static Load Egyptian Code
Prof.Dr. Osman Shaalan Earthquake Engineering Dr. Tharwat Sakr8
Design Design WeightWeight
2.7. Equivalent Static Load Egyptian Code
Prof.Dr. Osman Shaalan Earthquake Engineering Dr. Tharwat Sakr9
Story Forces Story Forces
Story Forces
Top Story Additional Force
2.7. Equivalent Static Load Egyptian Code
Prof.Dr. Osman Shaalan Earthquake Engineering Dr. Tharwat Sakr10
Design EccentricityDesign Eccentricity
e Actual eccentricity
0.05B Accidental eccentricity
B Building Breadth
2.7. Equivalent Static Load Egyptian Code
Prof.Dr. Osman Shaalan Earthquake Engineering Dr. Tharwat Sakr11
Building ExampleBuilding ExampleBuilding RC B+G+10+R
Floor Plan As shown in the drawing
Floors Basement 4m Parking
Ground 5 m Commercial
First 5m Commercial
Typical 3.5m Office
Roof 3m Roof
Location Zagazig
Soil medium dense clay 20m then Sand
Floor Area 800 m2 (assumed 20X40m)
Roof Area 200 m2
Slab thickness 200mm
2.7. Equivalent Static Load Egyptian Code
2.7. Equivalent Static Load Egyptian Code
Building Example Building Example SolutionSolution
Zone Factor Z =0.2 Zone 2
Importance factor I =1 Commercial
Structural System K =1.33
Soil factor =1.15
V = ZIKCSW
Time Period (formula1) =0.1*13 =1.3 sec
(formula 2) =0.9*52/20 =0.976 sec
Structure Factor C =1/15 T =0.0675
2.7. Equivalent Static Load Egyptian Code
Loads DL 0.2*25+2+3.5
= 10.5 kN/m2
Design Weight =(10.5+5)*20*40
=12400 kN Ground, first
and =(10.5)*20*40
=8400 kN floors above first
and =(10.5)*200
=2100 kN roof
Total Weight =12400*2+8400*10+2100
=110900 kN
2.7. Equivalent Static Load Egyptian Code
Base Shear V =0.2*1*1.33*.0675*1.15*110900
=2289 kN
Top Force =0.07*1.05*2289
=156.4 kN
2.7. Equivalent Static Load Egyptian Code
FloorwELEVWHForces01240044960038.3112400911160086.18284001411760090.813840017.5147000113.54840021176400136.25840024.5205800158.96840028235200181.67840031.5264600204.388400352940002279840038.5323400249.7
10840042352800272.4R840045.5382200295.1TR210048.510185078.65SUM11090027620502133
