Determine the earthquake force on each story in North-South direction. Ground Motion Lateral Force Earthquake Engineer Building Code Fundamental Period These keywords were added by machine and not by the authors. Earthquake Load Calculation (base shear method) The 3-story standard office building is located in Los Angeles situated on stiff soil. BibTex; Full citation Abstract. 3.Static properties (modulii, strength etc.) Assumptions – EQRD Clause: 6.2 1 and in standard occupancy structures in seismic zone no. In this paper, a reactor building is considered for earthquake lateral force analysis to determine the design base shear force. susceptible to liquefaction and lateral spreading during earthquakes. Determine total passive force, Pp at toe per foot width of wall. Active earth pressure coefficient: K a =0.54. However, lateral force Lateral Force The force that acts in the direction parallel to ground and perpendicular to the direction of gravitational pull of earth is known as lateral forces. Equivalent Static Lateral Forces. UBC97 Earthquake Lateral Forces Download https://goo.gl/kcY However, lateral force distributions given in the seismic design codes are typically based on results of elastic-response studies. By continuing to use our website, you are agreeing to our privacy policy. The Lateral Force Resisting System (LFRS) is Comprised of Horizontal and Vertical Elements Horizontal Element (Diaphragm) Lateral wind or earthquake load Vertical Element Common vertical elements are shown on the following slides. Determine total force, Pa, at heel per foot width of wall. This spreadsheet will find your seismic coefficient for structural building (Chapter 12) and non-building (Chapter 15) systems. The 1923 Great Kantō earthquake (Japan) and earlier events inspired Japanese engineer Toshikata Sano to develop a lateral force procedure that was officially implemented in the 1924 Japanese Urban Building Law, which directed engineers to design buildings for horizontal forces of about 10% of the weight of the building. Solution for For earthquake loads, ground shaking causes inertial forces in the a. Lateral force-resisting system b. Beams c. Diaphragm d. Foundation e. Columns… Lateral shaking is the force that can cause the most damage to a building during an earthquake. Figure 4 Lateral Force Distribution by a Flexible Diaphragm (tributary area approach) In seismic design, tributary areas are associated with uniform area weights (i.e., dead loads) assigned to the building systems (i.e., roof, walls and floors) that generate the inertial seismic load when the building is subject to lateral ground motion. The three principal types of resisting elements are shear walls, braced frames, and moment- resisting frames. Start studying Lateral Forces - Earthquakes. 1.4 Earthquake Demand versus Earthquake Capacity 10 1.5 Force-based Design to Displacement-based Design 13 2 Earthquake Demand on Buildings ... H Lateral base shear force of the building Hmax Peak lateral strength I Importance factor Ib,eff Effective moment of inertia of beam The concept employed in equivalent static lateral force procedures is to place static loads on a structure with magnitudes and direction that closely approximate the effects of dynamic loading caused by earthquakes. Applicability: The static lateral force procedure may be used for the following structures: All structures, regular or irregular (Table1.a and 1.b), in seismic zone no. Unit 6: Step by step procedure for seismic analysis of RC buildings (Maximum of four storey), The development of seismic forces using the Equivalent Lateral Force Procedure equation V=Cs * W will be explained through the terms of Newton's 2nd Law. earthquake ground motion and is equal to the addition of 0.50 Ca I D to the dead load effects D Ωo = seismic force amplification factor as given in Table (A-4), and accounts for structural over-strength r = redundancy factor, to increase the effects of earthquake loads on structures with few lateral force resisting elements, given by rmax Ag 6.10 2. Solution: b = 20 deg. Static force procedures of most building codes require that the lateral earthquake force at each floor level of an asymmetric-plan building be applied eccentrically from the centers of rigidity. In general, this analysis performed statically and dynamically. Earthquake resistant design of structures (Subject Code: 06CV834) UNIT 5 & Unit 6: Seismic lateral force analysis Contents: Unit 5: Determination design lateral loads, Seismic design philosophy, Equivalent lateral procedure and Dynamic analysis procedure. It is well recognized that structures designed by current codes undergo large inelastic deformations during major earthquakes. load combinations to solve for the variety of structural solutions. This course will cover the development of the equivalent seismic force based on IBC 2012 and ASCE 7-10 using ASCE 7-10 Section 12.8. HORIZONTAL LATERAL FORCE BUILDINGS ( CLAUSE 7.5.1) Buildings and portions there of shall be designed and constructed, to resist at SEISMIC ZONE P% least the effects of design lateral force || 0.7 specified in 7.5.1. This site uses cookies. Using coulomb's lateral earth pressure theory. Lateral Force Demand of Essential Equipments in Hospital Buildings for Earthquakes . For static analysis, the equivalent lateral force method were used, while for dynamic analysis, the response spectrum method is used. Redundancy 1.Resonance will not occur during earthquake as the force is random & impulsive, not steady state. MINIMUM DESIGN EARTHQUAKE. A series of large-scale dynamic centrifuge model tests were performed to study the behavior of single piles and pile groups in a soil profile comprised of a nonliquefied crust spreading laterally over a loose saturated sand layer. All moment-resisting frames are located at the perimeter of the building. It only finds your base shear forces, you will still need to plug any seismic shear forces into either your ASD ? represent material behavior during earthquake. What does the Equivalent Lateral Force Spreadsheet Solve? or LRFD ? Moment Resisting Frame = Diagonal Shear Cracks By Chao-hsun Huang. 100 ... attached in a series of reference buildings to examine the structural demand of hospital equipments during an earthquake. 14 LATERAL FORCES— EARTHQUAKES Nomenclature C a numericalcoeﬃcientusedin Equation14.2,givenin UBCTable16-Q C v numericalcoeﬃcientusedin Equation14.1,givenin UBCTable16-R C t numericalcoeﬃcientforcalcu- latingtheperiodofvibration F p … EARTHQUAKE LOADS (BNBC) - View presentation slides online. The structure of the building is steel special moment frame. The Static Lateral Force Procedure. Lateral-force-resisting elements must be provided in every structure to brace it against wind and seismic forces. NYC Building Code 2008 > 16 Structural Design > 1617 Earthquake Loads — Minimum Designlateral Force and Related Effects > 1617.4 Equivalent Lateral Force Procedure for Seismic Design of Buildings 1618.1 Structural Design, Dynamic Analysis Procedures Learn vocabulary, terms, and more with flashcards, games, and other study tools. Use the Equivalent Lateral Force method from ASCE 7-16 to determine the vertical distribution of horizontal earthquake loads that the SFRS (not shown) should be designed to resist for the ground motion direction shown. Start studying ARE SS 14- Lateral Forces, Earthquakes. Lateral LOADS resisting elements are shear walls, braced frames, and other study tools &,. You are agreeing to our privacy policy Los Angeles situated on stiff soil redundancy this course will cover development. Distributions given in the seismic lateral force earthquake calculations, use the dead load and 25 % of the building to privacy! 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