2009 IBC Seismic for Abu Dhabi
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Copyright© 1994~2010 Forum Engineers. All rights reserved. SEISMIC DESIGN BASE SHEAR 1 Occupancy Category = I. Substantial Hazard to Human Life If F III ─► = 1.25 (2009 IBC Table 1604.5) = 1.15 = 58 g% ─► = 1.540 = 18 g% ─► = 3.260 Site Class = E ─► Soft soil profile = E (ASCE 7-05 Table 20.3-1) = 89.3 g% ─► = 0.595 (MCE Spectral Response Acceleration @ 0.2-second Period) 3 = C = 58.7 g% ─► = 0.391 (MCE Spectral Response Acceleration @ 1-second Period) 4 = D = C Base Shear per Eq. (12.8-2) Diaphragm Type of the Structure: = 1.400 S1 < 0.75g + Rigid Diaphragm ─ ─ ─► SDC determined by Ss only (Section Ta < 0.8 Ts T < Ts Basic Resisting System = Cantilevered Column System ─ ─ ─► onse Modification Coefficient = 2 1/2 Lateral Resisting Elements = Special reinforced concrete moment frames System Overstrength Factor = 1 1/4 flection Amplification Factor = 2 1/2 CnSpncremes = ### CnSpncremes = 0.9 0 = 0.66 = 4 = 0.16 Structure Height Limit (m) = 10.7 = 0.23 = 1.47 = 0.23 Equivalent Lateral Force Procedure is permitted! < 3.5Ts ASCE 7-05 Equation (12.8-2) = = 0.298 ASCE 7-05 Equation (12.8-3) = SD1 / T / ( R / I ) W = 0.861 ASCE 7-05 Equation (12.8-5) = = 0.033 (12.8-2) need not exceed (12.8-3) and shall not be less than (12.8-5) ─► SEISMIC BASE SHEAR (LRFD) = 0.298 ASCE 7-05 Section 2.4.1 ─► SEISMIC BASE SHEAR (ASD) = 0.208 How to Enter Data (Emirate of Abu Dhabi Building Code & ASCE 7-05 ) - in Metric System Ver Seismic Importance Factor, IE Wind Importance Factor, IW Mapped S.R.A. = Ss Site Coefficient, Fa Mapped S.R.A. = S1 Site Coefficient, Fv SMS = Fa Ss 2/3 times S MS = SDS Seismic Design Category per S DS SM1 = Fv S1 2/3 times S M1 = SD1 Seismic Design Category per S D1 Seismic Design Category E 7-05 Table 12.8-1) Coefficient, Cu (ASCE 7-05 Table 12.8-2) Numerical Coefficient, Ct (ASCE 7-05 Table 12.8-2) Numerical Coefficient, x Period at Transition Point, Ts Structure Height, hn (m) Approximate Fundamental Period, Ta per Limit of Calculated Period, Tmax Calculated Period, Tcal Period to be used in calculations, T (ASCE 7-05 Table 12.6-1) T SDS / ( R / I ) W 0.044 SDS I W ≥ 0.01 W Developed by: Forum E
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Transcript of 2009 IBC Seismic for Abu Dhabi
Copyright© 1994~2010 Forum Engineers. All rights reserved.
SEISMIC DESIGN BASE SHEAR 4/17/2023
Occupancy Category = III. Substantial Hazard to Human Life If Fail III ─► = 1.25
(2009 IBC Table 1604.5) = 1.15
= 58 g% ─► = 1.540
= 18 g% ─► = 3.260
Site Class = E ─► Soft soil profile = E(ASCE 7-05 Table 20.3-1)
= 89.3 g% ─► = 0.595 g
(MCE Spectral Response Acceleration @ 0.2-second Period) 3 = C
= 58.7 g% ─► = 0.391 g
(MCE Spectral Response Acceleration @ 1-second Period) 4 = D= C
Base Shear per Eq. (12.8-2) Diaphragm Type of the Structure: = 1.400
S1 < 0.75g+
Rigid Diaphragm─ ─ ─► SDC determined by Ss only (Section 1613.5.6.1)
Ta < 0.8 Ts T < Ts
Basic Resisting System = Cantilevered Column System─ ─ ─►
Response Modification Coefficient = 2 1/2 …….. R
Lateral Resisting Elements = Special reinforced concrete moment frames System Overstrength Factor = 1 1/4 ……..
Deflection Amplification Factor = 2 1/2 ……..
CnSpncremes = 0.0466CnSpncremes = 0.9
0 = 0.66
= 4 = 0.16Structure Height Limit (m) = 10.7 = 0.23
= 1.47 Second(s)
= 0.23
Equivalent Lateral Force Procedure is permitted! < 3.5Ts = (2.30)
ASCE 7-05 Equation (12.8-2) = = 0.298 WASCE 7-05 Equation (12.8-3) = SD1 / T / ( R / I ) W = 0.861 W
ASCE 7-05 Equation (12.8-5) = = 0.033 W
(12.8-2) need not exceed (12.8-3) and shall not be less than (12.8-5) ─► SEISMIC BASE SHEAR (LRFD) = 0.298 W
ASCE 7-05 Section 2.4.1 ─► SEISMIC BASE SHEAR (ASD) = 0.208 W
How to Enter Data
(Emirate of Abu Dhabi Building Code & ASCE 7-05) - in Metric System
Version: 3A
Seismic Importance Factor, IE
Wind Importance Factor, IW
Mapped S.R.A. = Ss Site Coefficient, Fa
Mapped S.R.A. = S1 Site Coefficient, Fv
SMS = Fa Ss 2/3 times S MS = SDS
Seismic Design Category per S DS
SM1 = Fv S1 2/3 times S M1 = SD1
Seismic Design Category per S D1
Seismic Design Category
(ASCE 7-05 Table 12.8-1) Coefficient, Cu
Ωo
Cd
(ASCE 7-05 Table 12.8-2) Numerical Coefficient, Ct(ASCE 7-05 Table 12.8-2) Numerical Coefficient, x
Period at Transition Point, Ts
Structure Height, hn (m) Approximate Fundamental Period, TaUpper Limit of Calculated Period, Tmax
Calculated Period, Tcal
Period to be used in calculations, T
(ASCE 7-05 Table 12.6-1) T
SDS / ( R / I ) W
0.044 SDS I W ≥ 0.01 W
(Eh)
(0.7 Eh)
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E1
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G29
Tcal shall not exceed Tmax. It is permitted to use the approximate fundamental period, Ta, as Tcal. T = Min (Tmax, Tcal)
G30
T = Min (Tmax, Tcal) T must be smaller than Ts in order to use Ss only to determine the Seismic Design Category.
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Second(s)
(Eh)
(0.7 Eh)
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