Pdf calculation of equivalent lateral seismic forces. Asce 7 16 seismic provisions overview john hooper, p. Seismic loads provides clear, authoritative explanations of the seismic design provisions contained in standard asce sei 7 10. Context ecological impacts of conventional seismic practices the movement of oil and gas exploration and development activity into basins with little to no exploration activity, especially away from the. Context ecological impacts of conventional seismic practices the movement of oil and gas exploration and development activity into basins with little to no exploration activity, especially away from the existing infrastructure such as the dempster and alaska. The structural interpretation of the seismic data is presented in figures 4 and 5. In addition, two separate seismic force levels were utilized during the assessment representing both moderate and high seismic exposures in order to evaluate the impact of these parameters.
Asce 705 is the current version of the asce standard. The two horizons in the inline seismic section occurred at the levels of 2120ms. Guide to the seismic load provisions of asce 705 provides authoritative explanations of the seismic provisions offered in minimum design loads for buildings and other structures, ascesei 705. Seismic design maps usgs earthquake hazard program. Seismic analysis parameters us code asce 710 ibc 2012. I find it quite useful in understanding on seismic provisions given in asce 7 05. The development of asce 7 10 slated for publication in 2010 is just getting under way. To acquire skills in interpretation of 3d seismic data to enhance theoretical knowledge of seismic structural interpretation, stratigraphic interpretation, reservoir identification and evaluation, and horizon and formation attributes.
Seismic loads is an essential companion to standard ascesei 710 for all engineers, architects, and construction professionals who. Seismic loads includes a section with 26 frequently asked questions, as well as three appendixes with supplementary material. New ground motion requirements of asce 7 16 bssc webinar, july 28, 2017 charlie kircher usgs open file reports documenting development of united states national seismic hazard maps 2008 asce 7 10 and 2014 asce 7 16 usgs ofr 20081128 usgs ofr 20141091. Nodal seismic technology raises the bar for seismic data. The term 4d seismic reflects that calendar time represents the fourth dimension. They must learn to move from specialist to generalist, analyst to integrator, tactician to strategist, bricklayer to architect. If, after assessment of the cses report and the results of the seismic risk model, a. It incorporates many of the provisions found in fema 450, nehrp recommended provisions, 2003 edition. Under the new asce 7 16 standard, using a site class d response spectrum for the same building will result in a 60 to 80 percent increase in seismic demand relative to asce 7 10. The 3d seismic method involves the acquisition of seismic data on an areal grid. With clear, concise language seismic loads illustrates the key concepts and guides structural engineers in applying the most current. Using its ztechnology, the company has developed and manufactured a trio of entirely cablefree nodal seismic data.
Basic theory of seismic waves traveling through the earth and how they interact with earth materials and interfaces. Seismic imaging can provide information about geologic structure and stratigraphy including bed thickness and geometry, rock type, faulting. R response modification coefficient, as specified in asce 7 05, tables 12. Ie importance factor, as specified in asce 7 05, section 11. This is due to a penalty imposed by asce 7 16 for site class d sites in seismically active areas, as well as updates to site amplification factors based on recent. The seismic importance factor ie is used in the seismic response coefficient cs equations with the intent to raise the yield level for important structures e. Asce 498 seismic analysis of safetyrelated nuclear structures building code requirements for masonry structures aci 53002asce 502tms 40202 and speci. Instructional material complementing fema 451, design examples seismic isolation15 7 18 example of seismic isolation retrofit u. Seismic switches seismic switches in a centralized recording system are implemented as a separate acquisition module with its own power supply.
Chapter 4 detecting seismic events the first requirement for a seismic monitoring network is to detect and locate seismic events that could have been caused by an underground nuclear explosion. Asce 705, was the standard referenced in the 2006 and 2009 ibcs, but has now been substituted by asce 710 in the 2012 ibc. Development of seismic design methodologies for rigid wall. The parameters of the seismic simplified analysis according to the equivalent lateral force method depend on a seismic code and a method of defining values of the fundamental periods selected in the seismic analysis dialog. 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.
Kinetics guide to understanding nbcc seismic for mep. To a beginner in learning how to apply seismic provisions as per the asce this can be recommended as a good book to start with. Building and fire research laboratory national institute of standards and. The new requirements of asce 7 16 for sitespecific ground motions interim solution to an identified shortcoming in the seismic design procedures of asce 7 10 charlie kircher, ph. Introduction the first requirement for a seismic monitoring network is that it be capable of detecting seismic events.
Fema 451b topic 9 notes seismic load analysis 9 7 instructional material complementing fema 451, design examples seismic load analysis 9 7 provide 5% damped firm rock site class b spectral accelerations s s and s 1 or 2% in 50 year probability or 1. Seismic design of reinforced concrete special moment frames a guide for practicing engineers, second edition building structures generally comprise a threedimensional framework of structural elements configured to support gravity and lateral loads. The seismic force, e, appears in load combinations. Asce 7 05 is the current version of the asce standard. Generally following the organization of the seismic chapters in asce 710, this handy reference briefly summarizes each change to the seismic provisions that might affect actual practice andor enforcement and then presents the precise wording. Changes to the seismic hazard maps are presented, along with explanations as to why they were necessary and how they will. This is how we make our communities safer, and how we make life better.
Minimum design loads for buildings and other structures. Psdm seismic volume by predicted uncertainty values and compare the modified seismic cube to the original one figures 2ef. Chapter 11 presents criteria for the design and construction of buildings and other structures subject to earthquake ground motions. Pdf calculation of equivalent lateral seismic forces based. Introduction the first requirement for a seismic monitoring network is that it be capable of detecting.
Advanced earthquake topic 15 7 slide 3 instructional material complementing fema 451, design examples seismic isolation 15 7 3 outline seismic base isolation configuration and qualitative behavior of isolated building objectives of seismic isolation systems effects of base isolation on seismic response implications of soil conditions. This is the original version of the nonstructural seismic design spreadsheet. Buildings and other structures located within california that are owned by. Processing and interpretation techniques exploit the dense subsurface sampling provided by the 3d data volume. Go to the loads section, and then select ibc 2012 from the seismic loads menu. Seven seismic shifts in transitioning into business leadership. Changes to the seismic hazard maps are presented, along with explanations as to why they were necessary and how they will affect seismic design. Every leader must go through the seven seismic shifts to acquire the skills and the mindset needed to evolve from.
It explains well to a certain extent all the areas in the seismic load evaluation and design with examples. T l longperiod transition period, specified according to the asce 7 05 code, as shown in the figures 2215 through 2220. A more precise term is repeated seismic, because that is actually what is done. Generally following the organization of the seismic chapters in asce 7 10, this handy reference briefly summarizes each change to the seismic provisions that might affect actual practice andor enforcement and then presents the precise wording.
Little in the way of detail is visible at this band width as shown in figure 1. What the new asce 716 seismic design standards mean for. Advanced seismic interpretation is a course designed for graduate students. Seismic loads is an essential companion to standard asce sei 7 10 for all engineers, architects, and construction professionals who work on buildings in seismically active locations. The bssc has now embarked on another fiveyear cycle for development of what will be the 2020 edition of the provisions. The development of asce 710 slated for publication in 2010 is just getting under way. Introduction the working group 7 wg7 earthquake resistant structures of the international association for bridge and structural engineering iabse has proposed, inside its field of activities and objectives, studies of comparisons among seismic codes. The seven seismic shifts to enterprise leadership part 5.
When used with the expanded seismic commentary included in asce 7 10 third printing, seismic loads assists structural engineers in applying the latest thinking in seismic design of new building structures. Seismic load analysis per asce 702 equivalent lateral force method notation. Calculation of equivalent lateral seismic forces based on asce 702 and ktp 289 conference paper pdf available may 2012 with 1,487 reads how we measure reads. Asce 705 international seismic application technology. See chapter the weight of the component needs to be less than 25% of the weight of the building, otherwise the structure should be considered a nonbuilding structure. Comparison of the seismic provisions of the 1997 uniform. Each wiggle trace is the record, in time, of when sound from each source. T l longperiod transition period, specified according to the asce 705 code, as shown in the figures 2215 through 2220.
Usgs earthquake hazards program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards. Seismic safety policy 5 of 20 cses report as meeting seismic performance rating v, vi, or vll, the responsible official shall provide building data to office of the president for the seismic risk model. Sc10 new structural and geotechnical seismic design requirements in the 2015 nehrp. The seismic base shear v in a given direction is determined in accordance with the following equation. Detailed comparison of structural provisions of 2005 asce 7 to 2003 nehrp continued 2003 nehrp 2005 asce 7 section provision section provision comments 5 used, the sdc shall be determined from table 1. Senior principaldirector of earthquake engineering magnusson klemencic associates new site amplification factors first update since 1994 ubc much more data. May 11, 2012 calculation of equivalent lateral seismic forces based on asce 702 and ktp 289 conference paper pdf available may 2012 with 1,487 reads how we measure reads. Nfpa 5000 directly adopts the entire asce 7 seismic provisions by reference. Structural interpretation of seismic data from an xy field.
R response modification coefficient, as specified in asce 705, tables 12. Significant changes from asce 705 to asce 710, part 1. The seismic load provisions have undergone many significant changes since the 2005 edition of asce 7. When used with the expanded seismic commentary included in asce 710 third printing, seismic loads assists structural engineers in. V total design lateral force or shear at the base of the buildin cs seismic response coefficient w total gravity load of the building located or assigned to leve s ds design spectra response acceleration in the short period range see asce 702 section 9. A tool, maintained by the office of the president, to assess seismic risk in university facilities. Detailed comparison of structural provisions of 2005 asce. It is difficult to see and analyse the difference on static sidebyside displays like figures 2ef but when presented on a workstation screen such comparison quickly.
Detecting seismic events the first requirement for a seismic monitoring network is to detect and locate seismic events that could have been caused by an underground nuclear explosion. Asce standard ascesei 7 16 minimum design loads and associated criteria for buildings and other structures published by the american society of civil engineers. The asce 7 standard minimum design loads for buildings and other structures is the document the international building code ibc relies on for its structural and nonstructural requirements. Fairfieldnodal, nee fairfield industries, which has a 35year history in providing seismic data acquisition services, including processing, is positioned at the forefront of nodal seismic technology. Nist anticipates producing one on seismic design of reinforced concrete diaphragm analysis and design and another on guidelines for performing nonlinear structural analysis in 2010. Upon examination of the subband used by geoscientists in over 85 countries. This standard provides requirements for dead, live, soil, flood, wind, snow, rain, ice, and earthquake loads, and their combinations that are suitable for. University of california policy seismic safety policy 3 of 20 seismic risk model. The proposed change is to adopt the expanded commentary, because it supports asce 75 10, which has already been adopted as the basis for the 2014 edition of the nehrp 6 recommended seismic provisions. As in past cycles, seismic engineers and industry representatives again will approach this process enthusiastically. Comparison of the seismic provisions of the 1997 uniform building code to the 1997 nehrp recommended provisions s. Ie importance factor, as specified in asce 705, section 11. Instructional material complementing fema 451, design examples seismic load analysis 9 7 provide 5% damped firm rock site class b spectral accelerations s s and s 1 or 2% in 50 year probability or 1. The american society of civil engineers asce acknowledges the.
Although the 1997 usc seismic zone only considers the seismicity of a location whereas the 1997 nehrp seismic design category takes into account the building occupancy and soil type as well as seismicity, an equivalency between seismic zone and seismic design category was assumed for this comparison study. Seismic data consists of a series of recorded wiggle traces that describe a set of echoes from interfaces between rock layers in the subsurface that have different rock properties. It has independent cable connection to its own accelerometer sensor. Development of the 2020 nehrp provisions ascesei 716. Chapter 4 detecting seismic events princeton university. In a decentralized system, seismic switches are implemented as additional remote unit. Based on the well to seismic ties two horizons were identified in the seismic sections. Base shear force is calculated according to the formula. Guide to the seismic load provisions of asce 710 provides clear, authoritative explanations of the seismic design provisions contained in minimum design loads for buildings and other structures, standard ascesei 710. Seismic design shall include both effective from horizontal seismic and vertical seismic force. Tu n118 06 estimation of uncertainties in fault lateral.