1999 seaoc blue book commentary examples

The seaoc blue book, or recommended lateral force requirements and commentary, served for decades as the signature seaoc interpretation of the seismic provisions of the uniform building code ubc. As stated in the related blue book article seaoc 2008, where there is little guidance on applying the other system requirements, it is the seaoc seismology committees opinion that this means the column is to be designed as a frame column with flexure to meet the requirements of. In this paper, a performancebased seismic design procedure, which is directly associated with prequantified performance criteria, is presented by employing a displacementbased approach. Cochair, with ron gallagher, 1999 seaoc blue book committee. An appendix was added to blue book by seaoc under the title general requirements for the design and construction of seismicisolated structures. Seismic design with base isolation northern architecture. What is involved in the analysis of the maximum storydrift control, called interstory drift in the 1999 edition of the seaoc blue book.

In the 1999 edition of the seaoc blue book the commentary on wood lateral force resisting elements page 254 discusses moisture caused damage at the bottom of exterior shear walls and makes the following comment. Briefing paper 6 seismic code requirements for anchorage. The 1996 structural engineers association of california seaoc recommended lateral force requirements and commentary seaoc, 1996, also known as the 1996 seaoc blue book, requires buildings to be designed to meet only a single performance objective. Seismic safety of operational and functional components in. The seismic design manual was developed to fill a void that exists between the commentary of the blue book, which explains the basis for the ubc seismic provisions, and everyday structural engineering design practice. Commentary, structural engineers association of california, sacramento, california. Blue book development and recommended lateral force requirements, 1967 to 1999. International conference of building officials icbo, whittier, ca. Acknowledgementsthis project is performed by building seismic safety council of the national institute ofbuilding sciences for the federal emergency management agency under dhsfemacontract hsfehq09d0147, task order hsfehq09j0002. Funding source for nehrp provisions and commentary. Cyclic testing of narrow plywood shear walls atcr1, applied technology council, redwood. California is much less humid than florida, but this might be of interest.

Izmit, turkey, 1999 new york, new york, 2001 displacementbased design. When differences between the ibc and blue book are significant they are brought to the attention of the reader. Building code reluirements and commentary for structural concrete, aci 318gs. Changregulations and provisions, commentary and examples of seismic design for buildings. The name blue book is renowned worldwide among engineers, researchers, and building officials. According to the 1996 blue book seaoc, 1996, the objectives of having a. Seaoc blue book seismic design recommendations 2019. Seaoc blue book 2009 compilation by guillermo santana issuu. In the 1996 recommended lateral force requirements and commentary structural engineering association of california seaoc blue book, appendix b. Ibc seaoc structuralseismic design manual pdf free ebooks. The provisions for designing the isolation system of a new building were used as the starting point for the isolation system requirements of the nehrp guidelines for seismic rehabilitation of buildings fema 273. Seaoc blue book seismic design recommendations engineering.

Evaluation and improvement of inelastic seismic analysis procedures initial workplan 122200 page 3 displacementbased procedure that applies principles of nsps to the design of new buildings. The subject of seismic design can easily fill several volumes. Ioannis avramidis, asimina athanatopoulou, konstantinos morfidis. In the document the philosophy of design in seismic regions, set forth in the 1967 seaoc blue book, was followed, according to which the primary purpose of seismic regulations is the protection of human life, which is achieved by preventing the collapse of buildings or their parts, whereas in strong earthquakes damage and thus material losses.

Seaocrecommended lateral force requirements and commentary. This volume helps you interpret and use the seismic requirements in the 2006 international building code and seaocs 1999 blue book with design examples for. A brief introduction is devoted to the shortcomings of traditional forcebased design. Since 1959, the seaoc blue book, previously titled recommended lateral force requirements and commentary, has been a prescient. Rules for use of concrete moment frames to qualify for the ductility required. Other aspects of seismic design such as detailing connections should be addressed. This concern led to the birth of performancebased seismic engineering, or performancebased seismic design. Since 1959, the seaoc blue book has been a prescient publication of earthquake engineering. Seaocs 1999 recommended lateral force requirements and commentary also called the blue book. Seismology committee works to update seaoc blue book seaoc. Simplified seismic design procedures should be able to handle irregularities that are common to small buildings. Seventh edition with commentary, 1999 disclaimer neither seaoc, nor its member organization, committees, writers, editors, or individuals who have contributed.

Preliminary detailing for displacementbased seismic design of buildings. For the express purpose of resolving this issue seaoc, 1999, seaoc adopted a. Designers marketers social media managers publishers. When differences between the ibc and blue book are signi. Its purpose is to provide guidance on the interpretation and use of the seismic requirements in the 1997 uniform building code ubc, published by the international conference of building officials icbo, and seaocs 1999 recommended lateral force requirements and commentary also called the blue book. Features fullscreen sharing embed analytics article stories visual stories seo. Wind and seismic loads have been the topics of countless research projects, and complete texts deal with the calculation of these loads. This discussion became focused with the development of 1997 ubc conforming design examples for the seismic design manual seaoc, 1999. Recommended lateral force requirements, seaoc, blue book, california. Two examples of damage tolerant structures are shown below. Concepts, commentary and worked examples with flowcharts. Simplified seismic design procedures should not be limited to calculation of seismic design loads.

Commentary on the portfolio of compositions submitted for the degree of phd in music composition, university of durham by mariam rezaei, 2016. The name blue book is renowned worldwide amongst engineers, researchers, and building officials. During its development, drafts of the examples were sent to these individuals. These are generally consistent with that used in the ubc and other codes such as aci and aisc. Seismic design manual seaoc vol 1 code application examples. This paper addresses the switch to a 2475year earthquake from engineering and economic perspectives.

Collaborative governance and regional considerations in the new economy. Download seismic design manual seaoc vol 1 code application examples. Lateral force requirements and commentary 1999 seventh edition. Some discussion of recent last 20 yrs developments in. Recommended lateral force requirements and commentary seaoc blue book, 7th edition.

Simplified seismic design procedures bssc portal system. Copyright publisher structural engineers association of. Codes american association of state highway and transportation officials. This prompted seaoc to take the initiative in undertaking a complete rewrite of their blue book so that seaoc would remain the driving force with respect to seismic design procedures. The seaoc blue book seismic design recommendations is the. Conceptual framework for performancebased seismic design vision 2000, the design load is specified by a series of four earthquake design levels events and is expressed as a corresponding set of. Notation the following notations are used in this document. Seaoc blue book seismic design recommendations mixed. Seaoc blue book seismic design recommendations free download as. Fema 273 follows the philosophy that the isolation system for a rehabilitated building should be. Design example 2 n reinforced concrete wall with coupling beams. Its purpose is to provide guidance on the interpretation and use of the seismic requirements in the 2006 international building code ibc, published by the international code council, inc. Commentary the 1999 seaoc blue book commentary, in section c105.

For the fi ve coupling beams that have lower shear stress, diagonal reinforcement is not required by aci 318. Seismic design manual seaoc vol 1 code application. Seismic design recommendations is the premier publication of the seaoc seismology committee. Design example 2 reinforced concrete wall with coupling beams. Priestley 2000 describes a direct displacement procedure and compares it. Icbo, and seaocs 1999 recommended lateral force requirements and commentary also called the blue book. First, the story drift, termed maximum inelastic response displacement 1630.

Development of simplified seismic design procedures. In the wood design examples it became necessary to point out that common design practice is not consistent with strict interpretation of the ubc. Does it make sense from engineering and economic perspectives to design for a 2475year earthquake. While the 2006 ibc structuralseismic design manual is based on the 2006 ibc, there are some provisions of seaocs 2005 recommended lateral force provisions and commentary blue book that are applicable. Seaoc bluebook beam structure deep foundation scribd. Solving problems in energy absorption, motion control, impact reduction, controlled deceleration, rate control, machinery impact, air blast, vibration reduction. We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services. The first seismic design provisions for nonstructural components was introduced in the 1959 seaoc blue book, which was later incorporated into the 1960 edition of the uniform building code ubc. Earthquake engineering application design docshare. Work by the structural engineers association of california seaoc resulted in the publication of tentative design guidelines on this subject as an appendix to the seaoc 1999 blue book. Published in 1999, this seventh edition represents a fiveyear effort by seaoc s seismology committee to develop practical recommendations for deploying the 1997 ubc and related.

Regulations regarding earthquake protection systems entered in to the technical codes of the usa by the end of 1989. For these coupling beams, diagonal reinforcement is required. A lower bound of yielding displacement of the structure to satisfy these performance criteria is proposed. The popular series of design manuals from icc and seaoc is complete with volume 3. The intent of the blue book up until the seventh edition 1999 was to act as a vehicle for writing recommended minimum code. Seismic design with base isolation eurocode standards. Preliminary detailing for displacementbased seismic. Recommended lateral force requirements and commentary. Structural engineering reference manual 4th edition. Briefing paper 6, seismic code requirements for anchorage of nonstructural components, consists of two parts.

The major seismic design revisions contained in the 1988 ubc are more or less the result of turf protection on the part of seaoc. The wall to be designed is one of several reinforced concrete walls in the building. The 1999 seventh edition of the recommended lateral force requirements and commentary, also known as the seaoc blue book, summarizes recommendations of the structural engineers association of california seaoc for earthquake resistant design of structures. Discussions of the seaoc blue book recommendations refer to the document recommended lateral force recommendations and commentary seaoc, 1999 as well as the blue book online articles on specific topics seaoc, 2009 as applicable. The evaluation of shear strength of plywood sheathed walls with openings. These provisions required a seismic force, fpcpwp, be applied to parts and portions of buildings other than structural components. Design example 2 reinforced concrete wall with coupling. Corrosion resistance of uplift connectors structural.

Strongcolumnweakbeam moment frame behavior seaoc blue book 1999 strongcolumn, weak beam blue book commentary c402. Officials icbo, and in seaoc s 1999 recommended lateral force requirements and commentary also called the blue book. Seaoc blue book smartphone apps that can really help you. The seismic design manual was developed to fill a void that exists between the commentary of the blue book, which explains the basis for the ubc seismic provisions. To be consistent with the current code requirements though, this design example uses r 5. This difference in philosophy occurs because social policy makers and engineers have weighed the cost of. Steel braced frames concentric, chevron, crossbraced, buckling restrained, and ordinary. Liaison member on seaoc existing buildings committee. This paper provides a summary of the displacementbased seismic design method as applied to bridge structures. Requirements and commentary 1999 seventh edition seismology committee. Blue book recommended lateral force requirements and commentary was published in 1999, and it.