0000003397 00000 n %PDF-1.4 %���� Mechanics and Design (1992) Priestley, Seible, and Calvi Seismic Design and Retrofit of Bridges (1996) AASHTO AASHTO LRFD Bridge Design Specifications (1996) ASCE-ACI Committee 445 Recent Approaches to Shear Design … 1.1 Project Objective The purpose of this guide is to • Provide comprehensive, yet easy to follow guidance for the seismic design … 0 .--- - The report discusses the seismic design … x��V�oSu?�޽X�v[s8�kGP���N;:��^wE6I٠u��Yr��Z&@��è!A���LF��4�E�!���F��u�� ���|��|�����|���^HG�� ���@�4�R�"M���#��v�F7��R���˕@�������` ��L;O���@�:!�[ +�������'l�����ٳ3�0)���p�m���|����Ίg� ?Cv���G�T� �^�:w8=�k��˧B)���;lP�{a3�\o�N�BS�L�D�L�_-�bǹ��2����|N�ձ�7�.5��� �����=���M0����@e�����zU����;���o_�o�n�C�N�E�7���;.�(�J���Κ�ڼfOgY�xee^Y�����+�W44O+ze��LX�|��}9^&����f5��@�}o��+��9[ Figure 10.1-2 End wall elevation (1.0 in. No Fine Concrete [application and advantages], Types of Shrinkage in Concrete [detailed study], Shear key [ Purpose, types, design, construction details]. 0000002516 00000 n 4) Definitions of seismic design categories is shown in Table 7. Examples are shown with LRFD and ASD design methodologies side-by-side. Continued from Seismic Design For Fire Sprinkler Systems – Part 3a: Practical Example Before moving on, let’s examine a couple of options that can be considered with the layout that we now have. 0000002382 00000 n 0000003350 00000 n 0000005171 00000 n 0000000736 00000 n Seismic Design Principles – Factors to be Considered, Seismic Design Principles - Factors to be Considered, Zone factor: Seismic zone represent the peak ground acceleration that the structure is subjected to. This article is a UBC 1997 seismic design example that elaborates the calculation process in actual conditions. Structural loads, structural analysis and structural design are simply explained with the worked example for easiness of understanding. 2015 IBC SEAOC Structural/Seismic Design Manual, Vol. Also, construction materials, shoring system design, water retaining structures, crack width calculations, etc. Forces to be applied at each floor level can be calculated as follows. Seismic Design Updates for the California Building Code Dave Baska PhD, PE, GE, CEG August 2019. FEMA P-751, NEHRP Recommended Provisions: Design Examples 13-6 Because the weight of the inlet filters is 25 percent or more of the combined weight of the nonbuilding structure and the supporting structure (Standard Sec. 0000003650 00000 n E. Carvalho, M. Fardis . 20. Structures assigned to Seismic Design Category B with Type 1b horizontal irregularity 2. The beam shown below is part of a special moment frame located in … … However, from a seismic design point of view, several other design … Chapter 3 – General Provisions & Seismic Design Criteria SDR Workbook – 2015 IBC Version 1-36 Steven T. Hiner, MS, SE Alternative Seismic Design Category Determination IBC §1613.3.5.1 Where S1 < 0.75, the Seismic Design … F t = 0. In addition, for more information on seismic designs, the Wikipedia article earthquake engineering could be studied. … EXAMPLE. %%EOF Detached one- and two-family dwellings, assigned to Seismic Design … The instructor/student should carefully review Chapter 10 of FEMA 451 for additional information on the seismic resistant design … 0000049890 00000 n seismic design category for a structure is permitted to be determined in accordance with Section 1613 or ASCE 7”. All Rights Reserved. Engineering at UCLA, teaching classes in steel design, seismic design, and tall buildings design. 0000004498 00000 n It contains design examples and complete solutions calculated using ASD and LRFD. Check whether the base shear is within the limit. flood 4 ft in depth above ground level; • Local regulations require an additional 1 ft of freeboard above the 100-year flood elevation; … However, depending on the type of the structure and as specified in UBC 97, the relevant components of the live load could be added to the dead weight. Generally, the seismic weight is the self-weight of the structure. The Seismic Design Manual includes hundreds of pages of comprehensive design examples, including connections, updated for the 2016 AISC Seismic Provisions. structures, as shown for example in Figures 1 and 2, are normally required in the presence of softer more compressible soils, where design concerns relate to bearing capacity and allowable settlement. Widely accepted codes for calculation of seismic loads are, Uniform Building Code 1997 (UBC-97), International building code (IBC), ASCE-7-10, Building code of Pakistan (seismic … SSW (E/Z) AP, PWD; Itanagar Introduction The problem of retaining soil is one the oldest in the geotechnical engineering; some of the earliest and most fundamental principles of soil mechanics were developed to allow rational design … 0000009264 00000 n Further, other permanent loads like super-imposed dead loads, machines on the floor, etc should be considered for the seismic dead weight. 0000130837 00000 n Calculate the following earthquake loads on the two-story building constructed with special reinforced masonry shear walls shown in Figure 4: earthquake load on the seismic force resisting system, and; out-of-plane earthquake load on a typical second story wall. For both example building locations where the building is normal occupancy … Let’s calculate the period of the structure. guide for the seismic design of new piping systems, and the seismic retrofit of existing, operating systems in critical facilities. Results for all Seismic Resistant System Footings . Volume 1 contains code application examples … Retaining walls--design and construction (LC)' Richards-Elms retaining wall design method (WES). The 2015 IBC SEAOC Structural/Seismic Design Manual provides a step-by-step approach to applying the structural provisions of the 2015 International Building Code and referenced standards. UBC 1997 seismic design example includes the calculation of the base shear and its distribution over a three-story building. 15.3.2), the inlet filters are classified as “nonbuilding structures” and the seismic design … In this example, I considered the building located in Zone 01 where the. Performance-based seismic design of a continuous bridge Authors: G. Ghosh , Y. Singh , S. K. Thakkar Source: Proceedings of the Institution of Civil Engineers - Bridge Engineering, Volume 161, Issue 4 , 1 Dec 2008 (177–182) �k��,�#�ʼ��^��Z�������[�M!�jd�SOۜ ��'��dލ\�g_#0U�T�.�ك�+Ȗ}�PK7ښll�9���}�`�+��߁�o�hD[�uC-j��#;�_#ɛ¨�{TuZǓ��t���\U�?�۫XC1EE�P!�]W���Z�.�SK�Eͮ(�~�+E}�W[�� ' 禮F�"\nxj��ٿ�^��ꑣ�@ -�� ��bFN=�T;I���lX�yFc���fip2��n�Z�/}A�F�)�%��uQ|\�:�x�!���oir���.�>2����f�ʻ�Һؖ���|��8r��. Example 1 … seismic design category for a structure is permitted to be determined in accordance with Section 1613 or ASCE 7”. Page Numbers – In the page numbering of the Manual (9-2-1, for example) the first numeral … 409 22 CALCULATE VERTICAL LOADS. The following data were considered in this UBC 97 seismic design example. 0000079968 00000 n The instructor/student should carefully review Chapter 10 of FEMA 451 for additional information on the seismic resistant design of wood structures. 0000002728 00000 n 2 133 Design Example 2 n Flexible Diaphragm Design As given, the base shear for this building is V = 0.25W.Because it is a one-story … ii) Re-analyse if significant changes made to elements of SFRS iii) Update generated (Fx ±Tx) load cases (and hence combinations) iv) Re-analyze to update seismic combination results and re-Check/Design iv) Iterate ii-iv until completion. However, the seismic design exemptions discussed earlier are a function of the design ground motion level at a given location. 430 0 obj<>stream 0000130242 00000 n Effective January 1, 2020 All applications for a building permit submitted on or after January 1, 2020 … Historically, degree of seismic risk and the resulting design loads have been linked to seismic zones, with higher seismic zones associated with higher anticipated ground motion. Seismic Design of Earth Retaining Structures By Atop Lego, M.Tech (Struct.) Further, relevant areas to the design are also discussed in this article. He is both a registered structural engineer and architect. = 25.4 mm, 1.0 ft = 0.3048 m) The floor is concrete slab-on-grade construction. 0000003267 00000 n UBC 1997 seismic design process is discussed in another article on the web site. 1, 2, 3) have replaced the use of seismic zones with Seismic Design … First, the design team must take a multi-hazard approach towards design that accounts for the potential impacts of seismic forces as well as all the major hazards to which an area is vulnerable. have discussed in addition to other aspects. 2015 IBC SEAOC Structural/Seismic Design Manual, Vol. 0000004907 00000 n EXAMPLE C1. This moment level is labeled as probable flexural strength, Mpr. Per AASHTO, no seismic analysis is required for structures in Zone 1. Also included are two AISC seismic-related standards: the 2016 AISC Seismic … F1 = 12.618 x 100 x 4 / [100 x 4 + 100 x 8 + 60 x 12] = 12.618 x 400 / 1920 = 2.629 kN, F2 = 12.618 x 100 x 8 / [100 x 4 + 100 x 8 + 60 x 12] = 12.618 x 800 / 1920 = 5.258 kN, F3 = 12.618 x 60 x 12 / [100 x 4 + 100 x 8 + 60 x 12] = 12.618 x 720 / 1920 = 4.732 kN. Structural Guide © 2021. Corner: 9'x40'x5'-0" w/ top of footing 2'-0" below grade . Force to be applied in the static analysis can be calculated from the following equation. FEMA P-751, NEHRP Recommended Seismic Provisions: Design Examples 10-4. EUR 25204 EN - 2012 Eurocode 8: Seismic Design of Buildings Worked examples Worked examples presented at the Workshop “EC 8: Seismic Design of Buildings”, … 0000000016 00000 n 0000003727 00000 n SEISMIC DESIGN EXAMPLE 2- Design of the critical end regions of a beam in a special moment frame for shear and confinement. 1. Structures assigned to Seismic Design Category C, D, E, and F with Type 1a and Type 1b horizontal structural … NBCC 2015 Seismic Design Examples … Given: Per original Sample Calculation Statement: • Property is located in a FEMA-designated floodplain (Zone AE) and is subject to a 100-year . Middle: 5'x30'x4'-0" Side: 8'x32'x4'-0" Foundation Design … Ft  – is the portion of base shear(V) considered concentrated at the top of the structure in addition to the forces distributed from base shear. 3) Seismic design categories (_____) can be assigned and determined as a function of the “mapped” spectral accelerations and the risk category. Example 1 juxtaposes the seismic design methods and calculations for an identical bridge for both the 1000 yr. and 500 yr. events in order to highlight the differences and similarities between the two, and serves as a transitional reference for the designer. trailer Structures assigned to Seismic Design Category B with Type 1b horizontal irregularity 2. The AWWA code [1] includes a factor "R" that is used to establish forces for the seismic design of water tanks (circular welded steel, circular bolted steel, circular prestressed concrete, rectangular reinforced concrete, circular wood… 0000003303 00000 n 0000077298 00000 n ADSTIR ACT ( s ss reverse as If necessary and fdeitfy by bl ock bor . The concept of this method is the lumped mass. Solutions have been developed based on the 2015 and 2018 National Design Specification®(NDS®) for Wood Construction, and the 2015 Special Design Provisions for Wind and Seismic … Seismic design shear Ve in plastic hinge regions is associated with maximum inelastic moments that can develop at the ends of members when the longitudinal tension reinforcement is in the strain hardening range (assumed to develop 1.25 fy). Element designs with notes and discussions have added to get comprehensive knowledge. The figure below indicates the structural arrangement considered for UBC 1997 seismic design example. Exceptions: 1. Seismic design of water tanks relies upon a number of rules issued by various code- setting groups. Forces to be applied at each floor level can be calculated as follows We consider the mass of the structure is lumped at each floor level in this calculation. in Chapter 10 of FEMA 451, NEHRP Recommended Provisions: Design Examples. Design (ASD) and Load and Resistance Factor Design (LRFD). These definitions are obtained from FEMA P-749, but are very close to the brief descriptions in ASCE/IBC procedures. The NBCC2015 Seismic Design Examples document contains structural models designed to illustrate and guide users who want to better understand both seismic or dynamic analysis and design and … Through the examples in this course, you will learn how to: Seismic Design Force and Base Shear Example 1 - Calculating seismic design force and base shear on a 6 story reinforced concrete building; Example 2 - Calculating the seismic design force and seismic … However, seismic … Seismic Design of Earth Retaining Structures By Atop Lego, M.Tech (Struct.) seismic design shear forces. However, seismic criteria must be addressed in this case. More recently, design codes and standards (refs. 1. Instructional Material Complementing FEMA 451, Design Examples Seismic Load Analysis 9 - 31 Diaphragm Flexibility • Untopped steel decking and untopped wood structural panels are considered … Detached one- and two-family dwellings, assigned to Seismic Design Category A, B or C, or located where the mapped short-period … The ring-shaped, four-story building is suspended on 692 stainless steel saucers, making it a stellar example of seismic base isolation designed to diffuse the effects of seismic … Structural Engineers use different design codes/guidelines for calculation of earthquake loads. in Chapter 10 of FEMA 451, NEHRP Recommended Provisions: Design Examples. This worked example is a static method of calculating the force to do the static analysis. SAMPLE DESIGN CALCULATIONS. Exceptions: 1. 0000002298 00000 n He has led his firm’s design work on projects such as the Getty Museum and major buildings on the campuses of the University of California at Los Angeles, Riverside, and San Diego. Through the examples in this course, you will learn how to: Seismic Design Force and Base Shear Example 1 - Calculating seismic design force and base shear on a 6 story reinforced concrete building; Example 2 - Calculating the seismic design force and seismic base shear for a building using the simplified analysis procedure Further, limiting values of the drift, etc shall be checked as per the code requirement as discussed in the article UBC 1997 seismic design. These forces could be applied to the computer model, and bending, shear, deflection could be obtained from the same to proceed with the desing. Further, Ft is taken not greater than 0.25 V where the T > 0.7  and it can be calculated from the following equation. Distribution of the forces due to the earthquake is done accordingly in following UBC 1997 seismic design example. startxref V = ( 0.08 x 1 / 3.5 x 0.471 ) 260 = 12.618 kN. Check/Design elements of SFRS for seismic Load Combinations. Per AASHTO, no seismic analysis is required for structures in Zone 1. This resource page provides an introduction to the concepts and principles of seismic design, including strategies for designing earthquake-resistant buildings to ensure the health, safety, and security of building occupants and assets.The essence of successful seismic design is three-fold. EXAMPLE 9 SEISMIC ZONE 1 DESIGN 1 2018 Design Example 9 • • • • Example 9: Seismic Zone 1 Design Example Problem Statement Most bridges in Colorado fall into the Seismic Zone 1 category. Volume 1: Code Application Examples, provides step-by-step examples for using individual code provisions, such as computing base shear or building period. In this UBC 1997 seismic design example, Ft = 0. SSW (E/Z) AP, PWD; Itanagar Introduction The problem of retaining soil is one the oldest in the geotechnical engineering; some of the earliest and most fundamental principles of soil mechanics were developed to allow rational design of retaining walls. 2 133 Design Example 2 n Flexible Diaphragm Design As given, the base shear for this building is V = 0.25W.Because it is a one-story building, Equation 12.10-1 simply becomes the following: Seismic Design Manual illustrates how the provisions of the code are used. Rules for the representation and calculation of seismic actions and for their combination with other actions Section 4 –Design of buildings General design rules relevant specifically to buildings Section 5-9 –Specific rules for design of several types of buildings Design … 409 0 obj <> endobj 0000109389 00000 n Structures assigned to Seismic Design Category C, D, E, and F with Type 1a and Type 1b horizontal structural irregularity New Diaphragm Requirements •Section 12.10.3 required for … EXAMPLE 9 SEISMIC ZONE 1 DESIGN 1 2018 Design Example 9 • • • • Example 9: Seismic Zone 1 Design Example Problem Statement Most bridges in Colorado fall into the Seismic Zone 1 category. xref Instructional Materials Complementing FEMA P-751, Design Examples . Design Example of a Building IITK-GSDMA-EQ26-V3.0 Page 3 Example — Seismic Analysis and Design of a Six Storey Building Problem Statement: A six storey building for a commercial complex has plan … Volumes 2 and 3: Building Design Examples, furnish examples of seismic design … <]>> Vmax = ( 2.5 x 0.08 x 1 / 3.5 ) 260 = 14.857 kN. : 5'x30'x4'-0 '' Side: 8'x32'x4'-0 '' Foundation design … SAMPLE design CALCULATIONS and complete calculated... Load and Resistance Factor design ( LRFD ) Table 7 on seismic,. And LRFD such as computing base shear or building period tall buildings design Table 7, provides step-by-step for! Forces to be applied at each floor level in this article UBC 97 design! Of FEMA 451 for additional information on seismic designs, the Wikipedia article earthquake engineering could be studied … (... … E. Carvalho, M. 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On the seismic resistant design of wood structures structure is lumped at each level... This moment level is labeled as probable flexural strength, Mpr s ss reverse as If necessary fdeitfy., M. Fardis can be calculated from the following equation could be studied this is... Calculate the period of the critical end regions of a special moment frame located in 1! More recently, design codes and standards ( refs x 0.08 x 1 / 3.5 260. Calculating the force to do the static analysis can be calculated from following. Applied in the static analysis UCLA, teaching classes in steel design, seismic,! Floor level in this case level is labeled as probable flexural strength, Mpr I considered the building in! Chapter 10 of FEMA 451, NEHRP Recommended Provisions: design examples complete!, assigned to seismic design, seismic criteria must be addressed in this article Resistance design!