See 780 CMR 1607. 3. If it is to be considered, the program offers the option of two different methods: and calculations in the seismic analysis. Table 2: Italian risk plants in seismic areas. seismic weights, the weight of the mezzanine will include the dead load plus 25 percent of the storage load (125 psf) in accordance with Standard Section 12. ese results are used in a regression analysis to nd the annual exceedance Note that the actual forces associated with an automatic static lateral load are not calculated until you run the analysis. Figure 2 shows the conception of the static system and its dimensions. Static Seismic Load can be applied as per NSR-10. 2-2. 5 Testing Alternative for Seismic Capacity Determination. The shaking table test of the scaled model of the building is carried out under several ground motions to verify the safety of the system. Therefore, the mezzanine seismic weight is 69 + 0. 14. 0. 3. For the purposes of determining the wind, snow and earthquake loading Collateral Load is the weight of any additional loads that may be in specific parts of the building, but. An experimental Seismic Relative Displacement – Design shall accommodate seismic relative displacement of 0. Table 2. This includes the following changes to design: (1. (Table 7 of IS: 1893 Part 1) Seismic Weights: The floor area is 15×20=300 sq. Dead loads are also known as permanent or static loads. A type of membrane structures usually considered as a reference in other works are employed in the present study. TERRITORY Z VALUE JAMAICA . NUMERICAL ANALYSIS BY LEM In the present study, a number of numerical analyses have been performed by the software GEO5 (2014). 75 Hence the aim of the present study is to compare seismic performance of a 3D (G+7) storey RCC, Steel and Composite building frame situated in earthquake zone V. SEISMIC ZONING AND SITE CHARACTERIZATION 2. They found that Table 11. 3 Drained properties for foundation and embankment soils Foundation Embankment Soil 1 Soil 2 Soil 1 Soil 2 Unit weight (pcf) 125 125 113 120 Young’s modulus (ksf) 12,757 12,757 6,838 6,838 Poisson’s ratio 0. 4 and Table 2. 9 and 2. 5-2 of ASCE 7- 16. The standard approach is often based on the conventional limit equilibrium method using equivalent Mohr–Coulomb strength parameters (c and /) in a slip moderate, and strong site properties are considered for stability evaluation of the NI common basemat. If the line size (nominal pipe size) times (x) the temperature (degrees F) is above1500 then the line "may" need formal stress analysis. c = Design coefficient for seismic forces, the value is dependent of the seismic analysis method used W 0 = Load or total weight of building. Hence this approach is limited to low Initial (static) stresses and displacements have strong effects on seismic response of arch dams. [3] The country is divided in two seismic zones, Zone I = High Seismicity and Zone II = Medium Seismicity according to the following figure: Being a 1979 Code, it would be expected that the data considered is already outdated. 1 (Table A-2) and in Total weight of permanent equipment is to be included. The calculation of seismic loads for equivalent static analysis can be broken down into the following tasks: Estimate self-weight and seismic mass of building The California Building Code requires that buildings in excess of 160 ft and located on the site selected for this building incorporate a special moment-resisting frame capable of resisting at least 25% of the speciﬁ ed design seismic forces. The target building footprint dimensions of 69m x 69m could not fit within the centrifuge : equal to 0. The West section of the building is considered to have a capacity of 10-15% of Some areas of the site are expected to liquefy below the water table under ULS important structural and seismic characteristics, and note obvious deficiencies. In the first storey, the horizontal force was equal to 1/12th of the weight above, and in the second and third storeys, 1/8th of the weight above. (2017), May 15, 2018 · In the meanwhile, let’s focus first to the torsion induced using static seismic loads. In cohesive soils, a vertical tension crack may be used to aid in defining the potential failure surface. At roof, no live load is to be lumped. The underlying assumption in this is that only first mode is considered to contribute to dynamic characteristic of building. The seismic weight and seismic torque are both calculated at this stage. An extreme irregularity (5b) exists Seismic Design Specification for Buildings, Structures, Equipment, and Systems: 2020 12/31/2019 II Executive Summary This document is intended to provide an overview of the requirements for seismic analysis and design of • R = response modification factors from Table 12. The seismic acceleration coefficients are denoted as k h and k v in the horizontal and vertical directions, respectively. 1– Static unit loads Dead Loads- G [kN/m2] Live Loads- Q [kN/m2] Slab self weight 2,93 2,00 Finishings 1,00 Note: The wind load is not considered in the design seismic damage states having %, %, and % exceedance probabilitiesin -year earthquakesare considered. 5. 4. Abstract. considered 5 times of wall height and 1. 3-3 provide maximum and minimum limits for the seismic design force. following information related to seismic loads Weight Tables for Steel Joists and Joist Girders as included in their analysis the added eccentricities Note a. 75 m eccentricity along the x-axis) and the weight of the tower itself distributed along its height (78,500 N/m 3, specific weight of steel). (30-6) Eq. function of its weight, and values above 20% are known to be damaging The Testing and Analysis Element of the CUREE-Caltech Woodframe Project limits on the seismic weight to ensure target non-exceedence probabilities for the different Table 1: 20 Ordinary Ground Motion Records and PGA Values considered in this study) will be described in the appropriate sections of this report. INTRODUCTION Risk analysis of industrial facilities consists in evaluation of potential losses related to relevant Jan 14, 2020 · To conclude, the equivalent static analysis procedure involves the following steps: Calculation of the total lateral seismic force V, as a product of effective seismic weight W of the structure and seismic coefficient C s. EXAMPLE CALCULATION – Seismic Actions to BC3: 2013 Page 8 of 22 • Rz,i (MT,i = 1 ) is the rotation of the storey i about the vertical axis due to a unit moment, MT, applied at the centre of stiffness. To the authors knowledge, this is the first study on TMSs subjected to a seismic record reported in the literature. 2. 1 Seismic Zoning (Quality of Data). G+30 storey building model with shear walls are considered, which are subjected for different load condition. 1 of IS 1893 (Part 1): 2002, even though it is proposed to drop this clause in the new edition of the Code. Accidental eccentricity is disabled by default. The seismic force is calculated for each diaphragm only. Table 3. 3 Seismic weight calculation of three storey structure. g. e. common and potentially hazardous waste material. In the latter, the use of 1st order or 2nd order is set for the static analysis is set via Design Options > Analysis. W Table 1. The computational cost of a dynam1c analys1s 1s many times more than that of a static analysis. IMPOSED BY EAK 2000 PROCEDURE FOR SEISMIC ANALYSIS According to the provisions of the Greek Seismic Code (EAK2000), the procedure for the slope stability analysis of the road embankments with heights less than 15m is the following: 1. 1) Snow load > 30 psf 20% (see ASCE 12. 0 E + L * + 0. The stiffness of shear walls is such that floor- to-floor drift or deformation is negligible and elements attached to the walls are subject only to acceleration forces. Bishop method is used for limit equilibrium analysis. In the topic, the manner in which ground accelerations impart design loads into the structure are described from a code perspective. (236 kN with −0. A static analysis is performed on the non-structural component (equipment, pipe, duct, or electrical due to the seismic and wind loads a will depend on the dead weight distribution of the non- Note that the case modeled in Figure D1. 02 times the story height in addition to thermal movement that may be present. 74. In case of framed buildings, these forces are applied at beam column junction nodes. Clearly, for dry slopes m ¼ 0, and for saturated slopes m ¼ 1. performance-based design optimization process are summarized in Tables 3 and 4. The report discusses the seismic design of gravity walls retaining granular environment is usually based upon static analysis using an excitation was provided by a shaking table which could simulate Having found these forces, conventional static weight of the wall, shear resistance on the base of the wall and. 1 (Table A-2) and in Occupancy Categories 4 and 5 (Table A- 3) in Seismic Zone 2. This current revised recommendation provides bulk material pressures for silos and further guidance on seismic design methods for storage tanks based on the horizontal load- This is a continutation of Rock Physics of Geopressure and Prediction of Abnormal Pore Fluid Pressures Using Seismic Data (Part 1). 8. 0= 2100 kN The total seismic weight is equal to the sum of roof weight and the wall weight, that is, W =Wroof + W wall = 5046+2100= 7146 kN ≈ 7150 kN The Sub-Committee first published “Design Recommendation for Storage Tanks and Their Supports” in 1984, and amended it in the 1990, 1996 and 2010 publications. GUIDE TO USE OF THE PROVISIONS Michael Valley, P. 1 – Lateral Load Distribution with Height by the Static Method building and we found the base shear as 1,404 kN. 11 Eq. so the bounding spectra developed in this report should be considered as. 1 determine weight per square foot of materials comprising the floor. How- ever, the peak earthquake load from a dynamic response analysis occurs for a very short timeâ with the average seis- mic force typically ranging from 30 to 70 percent of the peak depending on the present study, an attempt is made to utilize the recycled scrap rubber tyre in seismic isolation of structure. 2 through 13. Since the live load class is 4kN/sq. was taken as the total seismic weight of the structure (dead load plus seismic live Inter-storey drifts found in an equivalent static analysis were increased by a To fulfill its purpose, the BSSC: (1) promotes the development of seismic structural analysis procedures and acceptance FEMA 273. The Seismic Loads generated by the program are calculated for Building The Seismic Weight of each floor is the self weight of all members associated with The only applied loads that are included are the ones assigned to the Load the importance factor assigned to the structure per table 1. 7. , see Table 6 starting on page 8-23); The scope, extent, and findings of the subsurface investigation as they pertain to the analyses of The roof is also a dead load. 1) Permanent equipment 100% dead load II. 7. 11 Linear Response History Analysis Chart 1. The exception to this is when the soils, an arcuate failure surface is considered adequate. This category is used to specify whether seismic lateral earth pressure is to be considered or not. ) Sep 25, 2018 · At first, a deterministic linear static analysis is performed for nonseismic loads and the serviceability constraints are checked according to the ACI 318‐08 code. kN/m2 on floors and Total Seismic weight of the structure,. Alternatively, provide interstory drift for each seismic class were not damagedseismic class were not damaged, though considerable damages were seen in outside-facilities designed as low seismic class BMA Engineering, Inc. 13 Aug 06, 2019 · RSA Seismic Analysis (1st or 2nd order) is run as a stand-alone analysis from the Analyse toolbar, or as part of the Design (RSA) process. This kind of analysis is not able to catch exactly what happens when an earthquake affects a structure, but it does provide some important information on which parts of the structure are more fragile or what is the for the different soil types are listed in Table 1. Thus, you cannot view the resultant automatic lateral loads until after you have run an analysis. Aug 06, 2019 · A 1st Order Vibration analysis for the Seismic InertiaCombination only, which returns the standard results for that analysis type, but also the fundamental periods for directions 1 & 2. While the static load is a function of the backfill strength, previous Roof live loads are considered not to 6 be present for seismic drift analysis. (2012) and Dastan Diznab et al. m. If floor diaphragm is not considered, static seismic load will be applied to each node based on the mass distribution. FEMA 451B Topic 9 Notes Seismic Load Analysis 9 - 1 Instructional Material Complementing FEMA 451, Design Examples Seismic Load Analysis 9 - 1 SEISMIC LOAD ANALYSIS This topic focuses on seismic load analysis. 8, 2. m, only 50% of the live load is lumped at the floors. 3 to 4. The seismic coefficient of the structure can be calculated by the static equivalent method, as follows: stability analysis the values φ΄= 35o and c΄= 10KPa for the soil strength design parameters. This type of test must be performed on a shake table to. 1 Oct 2014 AASHTO Guide Specifications for LRFD Seismic Bridge Design, 2nd Ed. ) Concrete capacity is ignored for beam shear design when the beam is a part of a ductile moment resisting frame and seismic load is present in the design combination (IS 13920:2016 section 6. The seismic response of tensile membrane structures (TMS) is investigated. 26 Nonstructural Components For various analysis procedures, go to these charts: ELF Analysis Chart 1. The base shear is always computed using the total seismic weight. Analysis Level General Staffing Requirements and Cost Categories General Scope . 5 software which is a free-share software for seismic structural analysis. 1. 1. 0 E analysis of conventional beam slab and flat slab models. Will be used with Floor Diaphragm to calculate Center of Mass of each storey. 0*525. 2 should apply for. The accidental eccentricity settings are defined in the properties of the considered seismic load case, in the sub-group . 6 3 LOADS 3. 4. last calculated frequency), missing mass in direction k, node i . Note: SS = mapped MCER, 5%-damped, spectral response acceleration parameter at short periods. Between 1973 and 1983, the enforcement of the code requirements for nonstructural elements, components and systems was inconsistent. 3 Oct 2018 Learning, knowledge, research, insight: welcome to the world of UBC Library, 64 Table 5-6 Preliminary seismic weights used for analysis 66 Table 5-7 Eccentricities and total static torsional moment . Example 3' (x) 400 degrees (F) = 1200. 3) but using the Seismic Coefficients given in the following Table for type B buildings (or 1. 14-1 • W = Effective seismic weight of structure and other loads as follows: Warehouses minimum of 25% of floor live load Partition load 10 psf (see ASCE 12. Chapter 2 - Automatic Seismic Load Cases UG-22(f) Seismic reactions: Yes UG-22(j) Test pressure and coincident static head acting during the test: Yes Note: UG-22(b),(c) and (f) loads only considered when supports are present. Seismic Weight The portion of the total gravity load of the structure located at the roof and second story is: w roof = 356 kip (1,584 kN) w 2 = 571 kip (2,540 kN) The effective seismic weight of the building includes the total dead load plus any other code-prescribed loads. 1 Equivalent Static Analysis . May 12, 2015 · 1-10 aashto guide specifications for lrfd seismic bridge design displacement demand analysis sdc b, c, d seismic design proportioning recommendations article 4. 25 moderate explosion, fire, and p hysical hazard risk I=1. analysis, height of the soil bulk at the back of the wall is. 07 2. Screening or scoping level (periodic assessment, semi-quantitative risk assessment) • R = response modification factors from Table 12. The resultant seismic component is assumed to act at 0. Analysis was performed for both static and seismic loading conditions. 5 times those values for Type A buildings): Concrete or solid masonry walls Hollow masonry walls Vertical distribution of seismic base shear; Important Note on seismic load effects on ASCE 7-05,10 Sec 12. 5psf) Both the static soil pressure component and the added seismic component will be displayed. Pseudo-static seismic forces are considered along with other static force. 50 high explosion, fire, and physical hazard risk R = Lesser of Tables 1617. Defining Automatic Seismic Load CasesThe automatic seismic static load cases are defined using the Define menu > Load Cases command. 305. 17. 5 g, S1 = 0. Importance classes for buildings and recommended values of γI design of a non dissipative structure ( note. • “Minimum design dead loads” and “minimum densities for design loads from materials” are also listed in Table C3-1 and C3-2, respectively, of ASCE 7-05. 2 Limits of analysis of such piping in order to determine or provide seismic design adequacy. horizontal direction, the shear strength is at least equal to the seismic demand calculated with the Static Method Procedures (see 5. Not explicitly considered. 28 If these checks are not satisfied, then the candidate design is modified, otherwise the proposed metamodel is utilized to predict the deterministic seismic responses and the PBD SEISMIC ANALYSIS MODELING TO SATISFY BUILDING CODES The Current Building Codes Use the Terminology Principal Direction without A Unique Definition 17. Note that the velocity field at collapse is often Furthermore, it should be mentioned that the present results. Therefore, any seismic weight that is not connected to diaphragms at all (e. 8psf Concrete 62. 1, 0. Table 1-1: Importance Categories for Buildings . In the present study, the e ects of Pulvino and peripheral joints on the static behavior and seismic performance of arch dams are investigated. 1 of EC8 for fuller descriptions of ground types A– E. INTRODUCTION Currently a three-dimensional dynamic analysis is required for a large number of different types of structural systems that are constructed in Seismic Zones 2, 3 and 4 [1]. 10 (Optional) Modal Analysis Chart 1. 1 sdc d consider vertical ground motion effects article 4. 7 HUMBOLDT BAY POWER PLANT(B"2'B-3'8-7)ITEM 9 OF TABLE 2. 2 or 0. 1] THE VARIOUS ISLANDS OF THE ENGLISH SPEAKING CARIBBEAN ARE ASSIGNED ZONAL COEFFICIENTS ,Z, IN TABLE 2. Bowles;McGraw-Hill International Edition, 1997 may be referred). 5 10 25 Soil-2 17 5 15 3. Note that the analyses used to evaluate the site cases enveloped all of the site categories considered for the APR1400. walls located outside of a slab edge) will not be included in the seismic force distribution. Seismic Performance Level; Functionality (per ASCE 7 based on the extent of structural redundancy present in a structure as Static Analysis of EFRS and included in the demand loads to include operating conditions and the Additional weight can be added to the Equipment to account for Earthquake engineering is an interdisciplinary branch of engineering that designs and analyzes structures, such as buildings and bridges, with earthquakes in mind. 1 Seismic Zoning. 6 May 2011 It is worthy of note that the contents of this recommendation have been verified and their Stainless steel materials listed in Table 2. Remember that thermal stress analysis works in both directions i. 5C A T 0 = 0. Key words: rigid walls, seismic lateral pressures, design lateral In the present context considering the maximum applicability of free standing gravity retaining wall the presentation is focused mainly on the seismic design of gravity retaining wall. The effects of gravity load in combination with lateral loads are out of the scope of this study. For each direction k, selected in "General seismic load" interface, the amplitude of static load is computed as: is acceleration of "cut off" frequency in direction k (i. To estimate static and seismic active earth pressure (Pad) on a rigid retaining wall, numerical analyses using different step sizes have been carried out in this paper, based on the modified Culmann line method by considering Coulomb’s planar rupture surface. 25(125) = 100 psf. Additional test programs covering other topics may have been performed on the American All bridges located in Seismic Performance Zones (SPZ) 3 and 4 as well as sites located in SPZ 2 with a peak seismic ground surface acceleration, A S (PGA modified by the zero-period site factor, F pga), equal to or greater than 0. Example 1 – Calculation of Design Seismic Force by Static Analysis The lumped weight due to dead loads is 12. The method for the calculation of the accidental eccentricity can be selected in the combobox “Accidental A free software to find the seismic capacity curve of frames with ADAS or TADAS dissipators CEINCI-LAB is a computer software developed using MATLAB for static or dynamic structural analysis, in a friendly way and simultaneously serves the user to reinforce structural knowledge. TABLE OF CONTENTS – CHAPTER 4 4 DESIGN EXAMPLES 1 Seismic load calculation for a low-rise masonry building to NBCC 2005 4-2 2 Seismic load calculation for a medium-rise masonry building to NBCC 2005 4-8 3 Seismic load distribution in a masonry building considering both rigid and flexible diaphragm alternatives 4-22 Table 1 Properties of soil considered in the present study Material Unit weight (kN/m3) angle (degree) Cohesion (kN/m2) Soil-1 18. 5, 6 and 7. A struc-tural analysis (nonlinear static analysis) is used to determine the interstory dri ratio of each case and the exceedance probability for each seismic damage state. 9 D + 1. 6. 1 Plant Piston-Operated Valves of Light-Weight Construction. 3 0. The sand/clay acoustic model for shaley sandstones, developed by Carcione et al. In this form you specify a name for a load case, a type, a self-weight multiplier and in some an Auto Lateral Load. ”Accidental eccentricity”. In the analysis with seismic loading *Note: Reduced Live loads are considered as per Clause 7. It is applied to the mass center of each floor level when floor diaphragm is considered. As an alternative to the analytical requirements of Sections 13. W = effective seismic weight The effective seismic weight, W, of a structure shall include the dead load above the base and other loads above the base as listed below: 1. 24g, (g = acceleration of gravity) applicable to the seismic zone for Kalamata, as per the current code for new buildings, and the elastic design spectrum of Eurocode 8 for soil category D. on analysis results, and on the basis of implemented sensitivity. The crest of the dam is at elevation 680 ft when the seismic loading is applied. 2S. The total seismic weight can be viewed using the Scaling Factor Dialog in RISA-3D. Figure 2 shows the cross-section at station 1424+00. The weight of materials of construction incorporated into the building, loads shall have included in their analysis the added eccentricities expected to occur shall be assigned a structural occupancy category in accordance with Table 1604. Example 4" (x) 400 degrees (F) = 1600. , 2014 interim Notes: 1) The primary metric (SI) units used in civil engineering are meter (m), TABLE OF CONTENTS 8. 6 x retained height. Seismic-to-pressure conversion. The platforms described in Table 1, were modeled and analyzed using SeismoStruct V6. In Seismic Zone 4, the Near-Source Factor, Na, need not be greater than 1. Additional costs that should be weighed when creating. For the sake of omitting the influence of defined boundaries on analysis results, and on the basis of implemented sensitivity analysis, height of the soil bulk at the back of the wall is TOTAL (SEISMIC) 317 100. 3-4 is a seismic load case. 13 The first seismic regulations for buildings worldwide, with provisions for equivalent static analysis. 9 Soil Structure Interaction Chart 1. For the present case, (live load of 3 kN/m2) 25% of live load is considered for seismic weight calculations. Building materials are not dead loads until constructed in permanent position. The lateral force is usually a fraction of total seismic weight of building. In the first stage of the study, the nonlinear dynamic (time-history) analysis of the base-isolated frame buildings is carried out, and the nonlinear modal responses of the first and second modes are calculated from pushover analysis results. 2 D + 1. Therefore, seismic analysis turns out to be Seismic vulnerability is considered as a time-variant reliability problem. 2007 a) the lateral force method of analysis, i. 2. All compliant buildings are not the same. Example 1/Page 4. 4 m, width of 1. In general, the total seismic load can be expressed using Seed and Whitman’s (1970) notation as: 2 Ô Ø L 2 ÔΔ 2 Ô Ø, where 2 Ô is the static load and Δ Ô Ø is the dynamic load increment. Investigations on seismic performance based evaluation of structures can be referred to Waseem and Spacone (2017), Khorami, et al. , 2002). Security Classified (of this report) 20. upper portion and that a static analysis is to be performed. 2: η ae = Angle of slip surface in active zone. A Dynamic Load Factor equal to 2. E. 2T S 1 CE243A 40 UBC-97 Base Shear Equations Equivalent Static Analysis 0. For each point of attachment, a force, F p, should be determined based on Standard Equation 13. 599 , seismic forces or moments, or that in case of failure are a risk to life, shall be designed to possess ductility. Several studies have been carried out by considering wind and earthquake loads. All structures, regular or irregular (Table A-1), in Seismic Zone no. 3 if none of the following structural irregularities are present: Type (1, 4 or 5) of Table (3-4), or Type (1) or (4) of Table (3-5). 2 of the 2009 A detailed comparison between BNBC 1993 and BNBC 2017 is presented in tabular form for the seismic load analysis only. 6. Standard Equations 13. the acceleration at which the slope moves below the factor of safety value of 1. Standards, Static and Dynamic Calculation, Pipeline. PIPE STRESS: MYSTERY & MAGIC TABLE 1 IMPACT OF TEMPERATURE ON PIPE LENGTH FOR VARIOUS METALS Type of Pipe Coefficient of linear expansion x 10-6 in/in oF Change in 100 ft at 100 oF ∆Temp (in) Change in 100 ft at 200 oF ΔTemp (in) Change in 100 ft at 300 oF ΔTemp (in) Steel Stainless Austenitic (316) 8. Chapter 5: Foundation Analysis and Design 5-5 Table 5. The seismic loads to be accommodated and some details of seismic design will vary depending on whether the project is located in a high, moderate of low seismic zone. Weight of uncertain parameters on seismic response and failure probability is discussed. The example is a simpliﬁed representation of a typical embankment dam geometry. EC8 then allows the use of a planar structural model and the equivalent static analysis approach. 12 Nonlinear Response History Analysis Chart 1. they concluded that, the time period of conventional beam slab is more when compared to flat slab. NCSX Seismic Requirements NCSX-CRIT-SEIS-00. In calculating the design earthquake lateral forces, at least 25% . In the framework of the INDUSE project, which aims at innovative design method-ologies for the seismic design of industrial equipment and piping systems, case studies have been carried out, performing static and dynamic seismic analyses for two existing steel pipe- loads considered for design of these towers are self-weight, wind load, seismic load, antenna load, platform load, steel ladder load etc. (30-4) V C IW W R C I V W RT C I V base a a base v base ≥ ≤ = C a = Seismic height on pseudo static coefficient is carried out by selecting three categories including 4. In this research large-scale shaking table model tests were conducted to study slope behavior under earthquake conditions. Using seismic weight of building and the seismic When the horizontal seismic coefficients with k h =0. 1 Minimum Uniformly Distributed Live Loads, And corner is present: Lr/s Static analysis procedures for design are described in Sections 2. seismic dynamic analysis than if the exact free-vibration mode shapes are used. Loadings to be considered are gravity loads of potential failure mass, seepage forces 23 Apr 2016 I read several posts on reference load and even Tech Notes Seismic weight for static seismic analysis won't be calculated by itself and have to be separately defined? Will it be included in any calculation unless otherwise specified? would search for Gravity type reference loads and if not present, will 25 Oct 2013 In other words, all the WEIGHTS in the seismic definition had to be as those present in reference load cases 3 and 4) should not be used. 2). determining seismic lateral pressures acting on retaining walls. 9 s, and an average horizontal shear demand of 47,738 kN when subject to 7 motions matching the MCE target response spectra. 0 present criteria a way that its ability to sustain static load will not. 3 Materials § Concrete for footings: f c' = 2. weight) represent static loads, the dynamic loads can be due to large seismic events (rockburst). ,. The model slope was installed into a model box with a length of 4. 6, testing shall be deemed as an acceptable method to determine the seismic capacity of components and their supports and attachments. (2000) yields the seismic velocities as a function of clay (shale) content, porosity, saturation, dry-rock moduli, and fluid and solid-grain A Comparative Study of Seismic Performance of the Building Designed using Four Major Codes - written by Mohammad Azim Eirgash published on 2019/08/26 download full article with reference data and citations Mar 01, 2020 · Based on static Coulomb earth pressure theory, Okabe [1] and Mononobe and Matsuo [2] conducted in-depth investigations on different forms of retaining wall failure modes during earthquakes and proposed equations for the calculation of seismic earth pressures on retaining walls, known as Mononobe-Okabe (M-O) or pseudostatic method. 2-. It is found that the stability of a reinforced soil Total wall seismic weight Wwall =w*Area= 4. 3 are applied on the slope, the obtained seismic factors of safety for the slope using the present log-spiral limit analysis approach and elasto-plastic FE method based on strength reduction technique, are respectively listed in Table 3. . 3-1. – 4000 31 Seismic Analysis (ASCE 4‐98) 1997 UBC – Equivalent Static Period (Seconds) V/W (Acceleration) C A T 0 C V/T 2. 5 times of wall height. the slope at a depth z, with the water table being at z w ¼ mz. 4(c)). Fig. You can choose to apply seismic force from lateral earth pressure and/or from wall self-weight. For earthquake load analysis equivalent static method is implemented. Failure of towers is generally due to high intensity winds. 3/46 considered part of the live load • Example 2. 90 (from Table 3. An earthquake (or seismic) engineer aims to construct structures that will not A definitive list of earthquake engineering research related shaking tables 30 Jan 2019 seismic effects are considered by taking into weights of regions ABC and BDE, reduced to a static case of bearing capacity with present an upper-bound limit analysis method. led to the requirement in present-day building codes that tall structures must seen in this table, the scale relates to the observed effects of Note that the primary difference between intensity X and ing a static analysis of the structure for a load case consisting In this equation, W is the seismic weight of the structure,. A live load surcharge of 75 psf represents the live load due to lawn mower or similar used under static load condition. profile type, Type SD shall be used in Seismic Zones 3 and 4, and Type SE shall be used in Seismic Zones 1, 2A and 2B. The response spectrum analysis was carried out for ground acceleration A=0. 3 Bulk modulus (ksf) 10,631 10,631 5,698 5,698 for the seismic analysis of those vessels, especially on how to compute the seismic forces and the corresponding stresses at critical locations. η conditions within static as well as seismic environment. Also isotropic granular soil with equivalent surcharge is assumed in the analysis. weight of the pipe, insulation, and contained fluid during normal oper ating conditions. Based on the Coulomb theory and the M-O method the active static and the total (static and earthquake induced) active lateral thrusts on a wall are given by P A=γH 2K A/2 and P AE=γH 2K AE/2 , respectively, applicable for a dry granular backfill where K A and K AE If the Piping System being analyzed consists of PSV (pressure safety valve), the reaction force due to PSV operation shall be considered as applicable and a static equivalent method of stress analysis shall be performed considering the same. An approximate method is given for evaluating the latter frequency without a full analysis. Earthquake eﬀects are commonly considered in the stability analysis of rock slopes and other earth structures. 1). 14 3. 8 The following parameters summarize the seismic hazard prescribed in ASCE 7 for design: 9 x Building Risk Category: II 10 x SS = 1. There is one cent or less than 70 percent the weight of the adjacent story below not to be considered. 1 Seismic Weight of Floors Seismic weight of each floor is its full dead load plus appropriate amount of imposed load, as specified in 7. Seismic load is assumed as a point load applied at the center-of-mass of each floor and distributed to each steel moment frame based on each frame’s relative stiffness with respect to the entire system. Seismic refraction method is a commonly used traditional geophysical technique to determine depth-to-bedrock, competence of bedrock, depth to the water table, or depth to other seismic velocity boundaries (Northwest Geophysical Associates Inc. The understanding of the reservoir in the West Brae field in the North Sea has improved because of the incorporation of reprocessed seismic data into As noted previously, a pseudo-static analysis treats the seismic coefficient as a con- stant horizontal static force applied to the soil mass. In all Falling Weight Deflcctometer, Seismic Pavement No restrictions. show that typical retaining walls designed with a static factor of safety of 1. This technique proves to be a low- cost earthquake mitigation technique which can potentially reduce the damage caused by seismic shock propagation into the structure and hence ensure overall safety of the structure. Defining Automatic Seismic Load Cases. Analysis of Building With Response Spectrum Method Seismic Analysis of high-rise building having following data is analyzed for different models of lateral load resisting systems. 1, Nonstructural Performance Categories has an exception in NPC 3 which allows general acute care hospitals located in a rural area and within Seismic Zone 3 an extension of up to five years (to January 1, 2013) for complying with the bracing and anchorage requirements for fire sprinkler systems as set forth in NFPA 13, 1994 or subsequent applicable standards. List of Tables Table 3. KEYWORDS: seismic reliability, steel tanks, risk analysis, fragility. References to these Seismic Design Categories can be found in ASCE 7-10. (2014). All structures, regular or irregular (Table A-1), in Seismic Zone no. B. Background In addition to the “As Built” construction drawings maintained in Facilities Records, the University has completed structural analysis studies of many of the buildings on campus. 1 Gap stiffness corresponding to the contact coefficient. the wall type and backfill geometry. 4 Seismic Weight 7. Values of the passive earth pressure coefficient for log-spiral can be included in the framework of the "pushover analyses" and was the high weight of every element and the large volume of displaced soil during the installation. 4 Design of Middle Floor Beam Seismic loads are calculated from the total weight of the building so the heavier the building the greater the seismic load. This kind of analysis is not able to catch exactly what happens when an earthquake affects a structure, but it does provide some important information on which parts of the structure are more fragile or what is the The same holds true for the slab between the two layers of unit cells, which results in a thickness of 20 cm for the intermediate slab, while the static analysis resulted in a slab thickness of 35 cm for the top slab. b. in front of the wall in each model. 1: find the uniform load on a typical interior beam supporting the floor shown-From Table 2. PBD -Performance Based Design (Static or Dynamic, Nonlinear). static and seismic design methods commonly adopted in the current practice and Table 3-2. Seismic design shall include both effective from horizontal seismic and vertical seismic force. Hence, the total seismic weight on the floors and the roof is: Floors: W1=W2 =W3 =300×(12+0. 1-1 Geotechnical Parameters Parameter Value Net bearing pressure (to control settlement due to sustained loads) ≤ 4,000 psf for B ≤ 20 feet ≤ 2,000 psf for B ≥ 40 feet (may interpolate for intermediate dimensions) Bearing capacity (for plastic equilibrium strength checks with all load cases other than seismic are normally confined to static domain whereas seismic analysis invariably requires dynil:mic . 13. 3 m, and height of 1. The pseudo-static seismic forces act- Sep 10, 2007 · Overview of Seismic Refraction Method. In areas used for storage, a minimum of 25 percent of the floor live load shall be included. Grandstands (see stadium and 780 CMR 1613. of the floor live load is taken to be present on all panels. Static Wind Load as per NSR-10 is available. 1). 1997 UBC – Equivalent Static Period (Seconds) V/W (Acceleration) C A T 0 C V/T 2. the linear static analysis; loads as well as the seismic weight of each floor of the building. Zeinoddini et al. 2). The plan any story from static seismic analysis, shall not ex- Table 1. 3: Table 1. The case study on a typical The present study predicts the maximum seismic member force of five- and fourteen-story reinforced concrete base-isolated frame buildings adopting pushover analysis. Diaphragms must be considered as semi- 2 May 2013 Dead Load is the vertical load due to the weight of permanent loads such as wind load, rain load, earthquake load or dead load. IS 13920:2016 code clauses for Ductile Seismic Design. 2 short period structures Design Guide AGMU Memo 10. considered at their maximum combined height near station 1424+00. The flow charts provide an All structures in occupancy categories 4 and 5 in seismic zone 2 need to be evaluated only for vertical irregularities of type 5 (table 208-9) and horizontal irregularities of type 1 (table 208-10) Structures having any of the features listed in table 208-9 shall be designated as if having a vertical irregularity. 24 Nov 2016, Structural analysis from: Seismic Design of Buildings to m of a structure, measured in kg, should not be confused with its weight, mg, which is Note that the stiffness and damping forces are proportional to the relative motion between curves and Table 3. V = design base shear; W = effective seismic weight of the building as defined in ASCE 7-10 shear walls have been added to ASCE 7-10 Table 12. 5 but shall not exceed 3. The following NI structures are considered for the FE analysis • NI common basemat • RCB shell and dome saddle called a Pulvino. The seismic coefficient of the structure can be calculated by the static equivalent method, as follows: Chapter 14: Design for Nonstructural Components 14-5 effects of these loads on the component are combined with the effects of static loads. 35 of a prototype. Table B-2-1. The building has been modelled before construction. It is important to note that the evaluation is limited to those systems and components listed in the 1995 CBC, Part 2, Title 24, Table 16A-O. anal-!'si~. But before we continue I would like to remind everyone reading my posts that what you read are based on my structural engineering experiences only. 2 m. The flow charts and table that follow are provided to assist the user of the NEHRP Recommended Provisions and, by extension, the seismic provisions of ASCE 7, Minimum Design Loads for Buildings and Other Structures, the International Building Code, and NFPA 5000. B-2-2 . 1 damping consideration article 4. 5 Structural member sizes of models designed with seismic code. Non-linear static analysis consists of a referential representation of the seismic response of structures with non-linear behavior. Seismic qualification by testing based on a c = Design coefficient for seismic forces, the value is dependent of the seismic analysis method used W 0 = Load or total weight of building. 5 Eq. Table 2-1 Linear Static Procedure —m Factors for Masonry Infill Panels . Dez Dam with a height of 203 m was selected as a case study and all contraction joints of the dam body were modeled using the discrete crack approach based on as-built drawings The design gravity loads include the dead load corresponding to the weight of the structural members (beams, slabs, columns and shear walls) and a uniform live load of 80 psf. Note. [NOTE TO DESIGNER AND SPECIFIER: Design for the maximum permitted code displacement as indicated in ASCE 7 Table 12. Calculation of the static eccentricity for the SMSA of Mexican Codes. timber frames should be included for period calculations and to see if With regard to the seismic response, a CLT building may be considered as a box- like shake-table tests on full-scale CLT buildings, and numerical simulations [ Ceccotti et al. The value of the Yield acceleration (i. Seismic Models AR2844, AR2144, AR2144BLK, AR2145, and AR2145BLK and has identified the following topic, which in NTS’ view is applicable for this product’s requirements. - Where a partition Vertical geometric irregularity shall be considered to exist where the horizontal This document aims to present in a straightforward manner the essentials of Aspects of Seismic Analysis and Design Checks Common to all Structural Types around a large volume so their weight per Table 1. 14 Aug 2013 analyses of seismic response of retaining structures with cohesive backfill. V8i (Dynamic Analysis) - Duration: 15:51. 4 Nov 2015 assessment, and ground response analysis shall be considered to supersede the parallel seismic provisions in the AASHTO LRFD Bridge . 0 through 1615. 1 - Liquefaction Analysis January 2010 Page 1 Liquefaction Analysis This design guide illustrates the Department’s recommended procedures for analyzing the liquefaction potential of soil during a seismic event considering Article 10. 25 Apr 2018 The analysis of structures is a fundamental part of seismic design and assessment. Structures having any of the features listed in table 208-10 shall be designated as having a plan irregularity. Factor of safety Consider a vertical slice of a unit width that has a weight W and is subjected to both vertical and horizontal ground accelerations (Fig. To perform the reliability analysis the material properties of the ground are considered as normally distributed random variables with the mean and Coefficient of Variation (COV) as shown in Table 4. The effect of various parameters including wall inclination angle, angle of internal friction of soil, horizontal seismic loading, cohesion of the backfill and surcharge loading has been examined. This document is available to the public through Analyzer, Seismic Nondestructive Testing, flexible the National Technical Information Service, 5285 Port Royal pavement Road, Springfield, Virginia 22161 19. A static load case of weight in computed, which is handled as a "real" mode. Seismic Rehabilitation Guidelines xxv. Please note that this Test Report includes only the topic listed below. The effective seismic weight of the building includes the dead load along with some other load such as live load, snow load conventional frame system in four storeys on a shaking table. So, for ground support design in seismically active mines, both the static and dynamic loads should be considered [3] . 00 for low explosion, fire, and physical hazard risk I=1. Since concrete is on fluted steel deck, take average thickness of 5” total weight is: Quarry tile 5. Its overall goal is to make such structures more resistant to earthquakes. Seismic Lateral Earth Pressure . A new concept of modified unit weight by considering ground Seismic Loads . Allowable seismic drift limit is set to hsx / 50 where hsx is 7 the story height below the level under consideration. 5C A T S Long-Period Limits Control Periods T S = C V/2. July 2019 . (30-4) V C IW W R C I V W RT C I V base a a base v base ≥ ≤ = C a = Seismic A detailed comparison between BNBC 1993 and BNBC 2017 is presented in tabular form for the seismic load analysis only. ago, when static analysis with lateral loads of about 10% of the weight of the (Note that in this paper the term “code” is used broadly to include of seismic analysis procedures in different codes (see also Table 1. Note that in Fig. The seismic zone considered is Zone V. 4 SEISMIC A static seismic analysis is performed as defined in the FSAR. The potential failure surface having the lowest safety factor shall be used in the analysis. There is no need to reduce q factors to account for irregularity. 6 and 1622. 5 ksi Example 3' (x) 400 degrees (F) = 1200. 7 I=1. Therefore, a dynamic response spectra analysis can be conducted with approximately twice the computer time requirements of a static load analysis. Allowable stress of FRP is determined for the static properties at For seismic designs, the weight of the tank contents should be considered as being. Static coefficients for the accelerations which had been determined from the dynamic analysis of the building structures are applied to the piping using both static and dynamic analysis. bulletin is to present the National Building Code of Canada 2015 (NBCC 2015) loading Tables. Equivalent static method is a preliminary method in order to find the later loads that act on building. Dec 10, 2018 · 154 The Static Lateral Force Procedure Applicability: The static lateral force procedure may be used for the following structures: A. 2 Roof displacement versus infill strength. 4, EC-8, Part 1 (Ε 1998-1), Type of spectrum 1) S: the soil parameter from Table 3 of the Greek National Annex of EC-8-Part 1 (Ε 1998-1) (see Table 3) W: the weight of the sliding mass Shredded tires have been considered as a suitable alternative to conventional sand. Chapter 2 - Automatic Seismic Load Cases The equivalent lateral force procedure is a linear static analysis technique that approximates nonlinear building response by use of the response modification factor R, which accounts for a building’s inherent ductility and overstrength. Chapter B-2 Seismic Hazard Analysis . (30-5) 2. List of Tables. weight, reductions in the cost of materials and construction, and because they utilize a. restrained steel moment frameworks under (equivalent static) seismic loading. 5 meters for height of the structure. 0 shall be applied on the valve reaction force value. and gravel backfill materials as they offer benefits from their significantly lower unit. Due to the table limit, the scale factor of the model is chosen as 1:2. IS875 (part 1)-1987 give unit weight of building materials, parts, components. 1 Static Loads Table. Typical plan is shown in figure 2. The seismic component is assumed to vary from an intensity of X at the bottom of footing to an intensity of 4X at the top of the retained height. The • The “densities of common materials” and “weights of building materials” are given in Table 17-12 and Table 17-13, respectively, of Part 17 of the Steel Manual. The total effective seismic weight, W, is: W = 356 + 571 = 927 kip (4,124 kN) 2. for hot or cold piping. The static and seismic analysis of Janneh arch-gravity dam (157 m) is carried out by considering a combination of self-weight, hydrostatic, uplift and seismic loads. The dam is 130 ft high and 1120 ft long, and is constructed above a layered foundation of sandstone and shale materials. Equivalent pseudo-static seismic forces are considered in the analysis. [2. (2. 15, require liquefaction analysis. 15 Apr 2014 Table 1. Table 2 shows the lowest 3 periods of the two models, which are, as Design Guide Seismic Analysis & Upgrades Basis of Design This section applies to the seismic evaluation, analysis, and upgrade of existing buildings. 8. 4: Static The first seismic regulations for buildings worldwide, with provisions for equivalent static analysis. = 0. 4 Distribution of lateral force. In the present paper, the seismic design and analysis is conducted for two specific case stu-dies, namely a horizontal-cylindrical and a vertical-cylindrical pressure vessel, which consti- Note that the actual forces associated with an automatic static lateral load are not calculated until you run the analysis. was derived from the torsional analysis in addition to half the seismic weight of 29 Dec 2013 of MOC code in English language can be found [2, 3]. Twenty seven percent on the total amount industrial risk plants are chemical or petrochemical facilities and the eighteen percent of them is located in seismic area (see Tab. 2 yes select horizontal axes for ground motions article 4. on Endurance Wave Analysis (EWA) for nonlinear dynamic analysis and assessment of offshore structures, e. – 4000 30 as low seismic class Seismic Analysis (ASCE 4‐98) BMA Engineering, Inc. 94) and to present the results of a design case study of a hypothetical Note that the upper limit on the base shear is often going to govern for low-rise masonry forces and deflections, but the equivalent static method can be used if the structure Calculate the seismic weight W (see Table 1-12 and NBCC 2005 Cl. Jan 16, 2018 · Response Spectrum Analysis as per IS1893 in Staad Pro. 5×4) Seismic Hazard Requirements Chart 1. 3-2 and 13. The static lateral force procedure may be used for the following structures: A. The seismic force, E, appears in load combinations. Methods of design for structural integrity include nominal design horizontal forces (such as an equivalent static loading determined from a simplified equivalent static analysis) which provide a 69m for the building and 33m x 33m for the core, a 453,719 kN, a seismic weight of fundamental period of approximately 4. The case study on a typical Development of seismic-induced forces in props at 2·4 m centres (note: static excavation-induced prop forces are shown at time = 0) This combination of static and dynamic analyses has enabled the examination of the permanent displacements and associated seismic force distributions from a tall, heavy building onto an adjacent multi-propped NOTE 3 The level of seismic hazard that would be considered low depends not only on the seismicity of the region but also on other factors, including types of construction, traditional practices, etc. Analysis is Figure:1 Response Spectrum data specification done by taking into account the data form STAADpro. 20 Steel Stainless jacket weight, deck weight and weight of attachments, the number of elements and nodes, total height and water depth at the platform installation site (Table 1). Given that systems with over 60,000 dynamic degrees of freedom can be solved Jul 14, 2015 · The seismic stability of a reinforced soil wall has been analyzed using the horizontal slice method considering the pseudo-static seismic forces. This command brings up the Define Loads form. For the chosen COV, there was no likelihood of the seismic thrust ratios for design are presented as a function of the ratio of the predominant frequency of the earthquake motion and the fundamental frequency of the wall–soil system. 5 ksi § Slabs-on-grade: f c' = 4. 5 shaking table, whereas the centrifuge models included both, experiments with walls fixed to the equivalent to 90% of the maximum dry unit weight. (2017), Bayat et al. The seismic coefficient of the structure can be calculated by the static equivalent method, as follows: Oct 29, 2018 · It shall be ensured that the weights of these partitions shall be considered only in estimating inertial effects of the building. Equivalent static analysis is used as a static method, where the Response spectrum method and Time history analysis are used as Dynamic analysis. (For details of other type the book “Foundation Analysis and Design” by J. Note: Seismic Hazard Requirements Chart 1. 0) for the 1 st phase and 2 nd phase of the tailings earthen dam is also determined using TALREN 4 (2007). No need to define loads in Spectrum definitions as seismic weights will be calculated by itself from 'Mass' Reference Load in all three directions. 9 1. (2015), Qiao et al. building. Linear and nonlinear analyses are performed for both static and seismic cases. are considered RIGID if the width to depth ratio of the diaphragm is less than 3 and if no horizontal irregularities exist. —General Levels, Intended Use, Staffing, and Scope for Seismic Hazard Analyses . OnlineCivilDigital 85,356 views Instructional Material Complementing FEMA 451, Design Examples Seismic Load Analysis 9 - 21 5a, 5b) Strength (Weak Story) Irregularity Vertical Structural Irregularities Irregularity (5a) exists if the lateral strength of any story is less than 80% of the strength of the story above. While in-situ stresses (i. 3: Pre-Analysis for Seismic: Performs calculations for RSA Torsion Loadcases. 075 are also considered for the present seismic slope stability analysis. The second set of static loads due to gravity, consists of a concentrated load at the top of the tower representing the weight of the nacelle, runner, generator, gear box, etc. 12-1. Therefore, static analysis of dam-reservoir-foundation rock system under self-weight considering stage construction and impounding is carried out to establish the initial condition for seismic analysis. This technical note will focus on seismic analysis and design using Equivalent In EC8, the storey weight, Wi at storey i, taken when calculating the seismic actions should comprise Click on Display>Show Tables… and tick Modal Participating Mass Ratios The design objective to minimize structure weight was written as a summation of studies involving nonlinear analysis can be found in works by Bhatti et al. ASCE 7 permits the use of the equivalent lateral force procedure for the design of most buildings, except One or more tables summarizing the results of the deep-seated failure analysis on all the analyzed cross sections (e. 5psf (5 x 12. 45. note seismic weight table is present this weight table will be considered in static seismic analysis

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