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Earthquake Load

This document provides equations and calculations to determine the earthquake load and base shear for the design of a structure located in seismic zone 4. It includes symbols and factors for seismic zone, soil type, structural system, total seismic dead load, and other parameters. The calculations determine the minimum base shear, maximum base shear, and actual base shear to be used for design. The actual base shear is calculated to be 3696.20 kN.

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165 views2 pages

Earthquake Load

This document provides equations and calculations to determine the earthquake load and base shear for the design of a structure located in seismic zone 4. It includes symbols and factors for seismic zone, soil type, structural system, total seismic dead load, and other parameters. The calculations determine the minimum base shear, maximum base shear, and actual base shear to be used for design. The actual base shear is calculated to be 3696.20 kN.

Uploaded by

hazelarevalo
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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EARTHQUAKE LOAD

SYMBOLS & NOTATION:


V=TOTAL DESIGN LATERAL FORCE OR SHEAR AT THE z=SEISMIC ZONE FACTOR (NSCP TABLE 208-3)
BASE
Nv=NEAR SOURCE FACTOR IN THE DETREMINATION
Ca=SEISMIC COEFFICIENT (NSCP TABLE 208-7) OF Cv IN SEISMIC ZONE 4 RELATED TO BOTH
THE PROXIMITY OF THE BUILDING OR
I=IMPORTANCE FACTOR (NSCP TABLE 208-1) STRUCTURE TO KNOWN FAULTS WITH MAGNITUDE
W= TOTAL SEISMIC DEAD LOAD AT SETFORTH IN TABLE 208-5 & TABLE 208-6

R=NUMERICAL COEFFICIENT REPRESENTATIVE OF Na=NEAR SOURCE FACTOR USED IN THE


THE INHERENT OVERSTRENGTH AND GLOBAL DETERMINATION OF Ca IN SEISMIC ZONE 4
DUCTILITY CAPACITY OF LATERAL FORCE (TABLE 208-5 & 208-6)
RESISTING SYSTEM (NSCP TABLE 208-11 OR Ct=NUMERICAL COEFFICIENT GIVEN IN SECTION
208-13) 208.5.2.2
Cv=SEISMIC COEFFICIENT (NSCP TABLE 208-8) HA=TOTAL HEIGHT MEASUREDFROM THE GROUND LINE.
T=ELASTIC FUNDAMENTAL PERIOD OF VIBRATION
(IN SECONDS) OF THE STRUCTURE IN THE
DIRECTION UNDER CONSIDERATION

ZONE ZONE 4
IMPORTANCE FACTOR I=1.50
SEISMIC ZONE FACTOR z=0.40
SOIL PROFILE TYPE SD STIFF SOIL PROFILE
STRUCTURAL SYSTEM R=8.5 (SMRF w/ EBF
EARTHQUAKE LOAD COMPUTATION AS PER NSCP 2010 = .
ACTUAL BASE SHEAR
MAXIMUM BASE SHEAR
=

.
MINIMUM BASE SHEAR =

MINIMUM BASE SHEAR FOR ZONE 4 W4=6870 KN

. = = .
=

= ( )

= .
WHERE:
=
ZONE: ZONE 4
= . < . =
SOIL PROFILE TYPE: STIFF SOIL PROFILE

Cv=0.64 = . (. )()(. ) = .

. . (. )()(. `)
Nv=1.0 = = = .
.
R=8.5 (SMRF w/ EBF)
. ()(. )
= = .
. (. )
W1=7280.277 KN

W2=7280.277 KN

W3=7277.337 KN SINCE < < , = .

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