Seismic Base Shear

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    Seismic Calculations Based On Uniform Building Code 1997 Edition

    Date:

    Seismic Zone Type < refer page 2-30 Table 16-I > Zone Zo

    Soil Profile < refer page 2-35 Table 16-J >

    Structural System < refer page 2-32 Table 16-N > IMRF Con

    Building Type < refer page no. 2-14 > RCC Mom

    Occupancy Category < refer page 2-30 Table 16-K > C Standard

    Acceleration Near source factor < refer page 2-35 Table 16-S > Na 0

    Velocity Near source factor < refer page 2-35 Table 16-T > Nv 0

    Total dead load of the Structure in kips. W 2

    Overall height of the building in feet hn 1

    User define Time Period Tused 0

    Fundamental Time Period in sec. = Ct * (Hn) ^ 3/4 T 0

    Velocity Seismic Coefficient < refer page 2-35 Table 16-R > Cv 0

    Acceleration Seismic Coefficient < refer page 2-34 Table 16-Q > Ca 0

    Occupancy Importance Factor. I 1

    Numerical Coefficient representative of structure inherit over strength as per Table 16-N pg 2-32 R 5

    Numerica coefficient Section 1630.2.2 pg 2-14 Ct 0

    Ft = 0.07*T*V

    BASE SHEAR=V= ( Cv * I / (R * T) * W

    < refer page no. 2-14 >

    617

    Vmax= (2.5 * Ca * I / R ) * W 353

    Vmin= ( 0.11 * Ca * I W ) 85

    V4=0.8*Z*Nv*I*W/R 0

    GOVERNING BASE SHEAR = V 353

    PROJECT: IDB

    ST

    Ss

    BT

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    1 2 3 4 5 6

    Storey Storey Storey 2 * 3 E Wx*Hx 4 * 5' E(base to roof) Height Weight Hx * Wx & Fx Storey

    Hx ft. Wx kips V / Ewx * Hx Shear K

    1 4.9 76 374 Wx * Hx 5

    2 10.5 2693 28266 348

    3 0.0 0 0 0

    4 0.0 0 0 V - Ft / EWx*Hx 0

    5 0.0 0 0 0

    0.01233

    6 0.0 0 0 0

    7 0.0 0 0 0

    8 0.0 0 0 0

    9 0.0 0 0 0

    10 0.0 0 0 0

    11 0.0 0 0 0

    12 0.0 0 0 0

    13 0.0 0 0 0

    14 0.0 0 0 0

    15 0.0 0 0 0

    16 0.0 0 0 0

    17 0.0 0 0 0

    18 0.0 0 0 0

    19 0.0 0 0 0

    20 0.0 0 0 0

    21 0.0 0 0 0

    28640

    Ft Concentrated load at top 0

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    zone 3

    Soil Profile 4

    ZONE Z Shearwall Conc.(BFS)

    Zone 1 1 0.08 Dual Conc.(SMRF)

    Zone 2A 2 0.15 Dual Conc.(IMRF)

    Zone 2B 3 0.2 SMRF Conc.

    Zone 3 4 0.3 IMRF Conc.

    Zone 4 5 0.4

    1

    2

    3 Steel Moment Frame

    4 RCC Moment Frame

    5 Eccentric Braced Frame

    6 All other Buildings

    I

    Occupany Category 1 0

    SA

    SB

    SC

    SD

    SE

    SF

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    5.5 TABLE 16-Q - SEISMIC COEFFICIENT Ca

    8.5 1 2 3 4 5

    6.5 1 0.06 0.12 0.16 0.24 0.32

    8.5 2 0.08 0.15 0.20 0.30 0.40

    5.5 3 0.09 0.18 0.24 0.33 0.40

    4 0.12 0.22 0.28 0.36 0.44

    5 0.19 0.30 0.34 0.36 0.36

    6 0.00 0.00 0.00 0.00 0.00

    Ct

    0.04

    0.03 TABLE 16-R - SEISMIC COEFFICIENT Cv

    0.03 1 2 3 4 5

    0.02 1 0.06 0.12 0.16 0.24 0.322 0.08 0.15 0.20 0.30 0.40

    3 0.13 0.25 0.32 0.45 0.56

    SA

    SB

    SC

    SD

    SE

    SF

    SAS

    B

    SC

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    Typical Area Of Building Typical Area Of Building

    Area = 1042.0 m2 Area = 11210.3 ft2

    Density of Conc 24 KN/m3 Density of Conc. 150 pcf

    SDL 2 Kpa SDL 41.7 psf

    Partition 0 Kpa Partition 0 psf

    slab thk 0.25 m slab thk 10 in

    Beams Width (A) 1.5 m Beams Width (A) 60 in

    Depth (A) 0.5 m Depth (A) 10 in

    beam Length (A) 154 m beam Length (A) 505.12 ft

    Beams Width (B) 0.3 m Beams Width (B) 12 in

    Depth (B) 0.8 m Depth (B) 31.5 in

    beam Length (B) 121 m beam Length (B) 396.88 ft

    Slab Load 6252.00 KN Slab Load 1401.3 kip

    SDL 2084.0 KN SDL 467.5 kip

    Part 0 KN Part 0.0 kip

    Beam 3468.96 KN Beam 472.0 kip

    Weight Of a single Story 11804.96 KN Weight Of a single Story 2341 kip

    No of Storyeis 16 No of Storyeis 10

    Total Weight Of Storyeis 188879 KN Total Weight Of Storyeis 23407 kip

    Non Typ. Area Of Building Non Typ. Area Of Building

    Area = 1035 m2 Area = 11135 ft2

    Density of Conc 24 KN/m3 Density of Conc. 150 pcf

    SDL 2.3 Kpa SDL 50 psf

    Partition 1 Kpa Partition 20 psf slab thk 0.25 m slab thk 9 in

    Beams Width (A) 0.5 m Beams Width (A) 20 in

    Depth (A) 1.5 m Depth (A) 60 in

    beam Length (A) 97.8 m beam Length (A) 320 ft

    Beams Width (B) 0.3 m Beams Width (B) 12 in

    Depth (B) 1 m Depth (B) 39 in

    beam Length (B) 65.5 m beam Length (B) 215 ft

    Slab Load 6210 KN Slab Load 1252.7 kip

    SDL 2380.5 KN SDL 556.8 kip

    Part 1035 KN Part 222.7 kip

    Beam 2232 KN Beam 504.8 kip

    Weight Of a single Story 11857.5 KN Weight Of a single Story 2537 kip

    No of Storyeis 2 No of Storyeis 2

    Total Weight Of Storyeis 23715 KN Total Weight Of Storyeis 5074 kip

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    1042

    20.5

    14.5

    578.4

    2691.03

    268.44

    163.74 2850

    76.75

    158.62 4.7

    15.42

    2693.25

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    Perpared By Syed Imran Khurshid

    Concrete Building Frame System

    Dual (IMRF) Dual frame System

    SMRF (Special) Moment Resisting Frame

    IMRF (Intermediate) Moment Resisting Frame

    OMRF (Ordinary) Moment Resisting Frame

    CBFS Stand for