A seismic hazard zone describes an area with a particular level of hazard due to Use of live load reduction in 178831,189201, 189309 and 189747, effective October 23, 2019.) If you are unsure of the answer to any of the above questions try checking the structural notes page of your project documents where they are generally listed, or take a moment to read Understanding Seismic Design Categories (SDC).Seismic requirements can be tricky, if you would rather have someone walk you through your project to figure out the requirements please take a moment and … structure in such a manner that they can support a design load of not less than 200 pounds or the actual design load, with a safety factor of 2, whichever is greater (figure 6b). Heavy Duty Passed System DXL-I-C C 2.27 lbs./sq. Seismic Design . For the list of exemptions, refer to the Oregon Structural Specialty Code 2014 Edition, ... Our area is typically in seismic design category D for commercial buildings and D1 for residential buildings. Frost Depth. Design and Construction FEMA 232 ─ June 2006 Prepared by the Building Seismic Safety Council for the Federal Emergency Management Agency of the Department of Homeland Security National Institute of Building Sciences Washington, D.C. County Design Requirements: Soil Bearing Capacity. Standard Seismic Applications Guide - IBC Category D, E, F The following are all the IBC Category D,E,F 2 Code Requirements for lay-in acoustical panels and direct-hung acoustical tiles. Seismic design category and site class. Establish design earthquake 4. Not Considered . Supporting Documents. The purpose of this paper is to offer a concise history of those standards that govern seismic design in the State of Oregon and provide a Severe. (Amended by Ordinance Nos. For further information on Building Seismic Safety Council activities and products, see the Council’s web-site (www.bssconline.org) or write the Building Seismic Safety Council, National Institute of Building Sciences, 1090 Vermont, Avenue, The provisions of this chapter prescribe the seismic design requirements for existing buildings undergoing changes of occupancy, additions, alterations, catastrophic damage, fire, or earthquake repair, or mandatory or voluntary seismic strengthening. (OR‐9) Oregon House Bill 3144 (1999) Created a new category of engineering license in Oregon, structural engineer for the design of significant structures. Design # of Bridges ODOT Constructed. 5. Rain load data. Rain load data, where pertinent to the structural design (see Section 1611). The value of S DS determined in accordance with Section 1613.3 of the International Building Code is permitted to be used to set the seismic design category in accordance with Table R301.2.2.1.1. Snow: • Per 2014 OSSC, Ground snow load is based on Snow Load Analysis for Oregonas published by the Structural Engineer Association of Oregon. Total and differential settlement. The US Geological Survey has additional information that will assist in design. Flood design data, if located in flood hazard areas established in Section 1612.3. Source: Prof. Peter Dusicka, PSU Design load-bearing values of soils. System Design Seismic Design Maximum Ceiling Allowable Suspension Test Result Category System Weight Tested System Load Carrying Capacity System DXL-H D, E, F 2.50 lbs./sq. Commercial - D assumed, unless geotechnical report provided. Seismic design framework [Discussion focused on AWWA M41 Proposed Chapter] Seismic framework steps: 1. Dimensional lumber span chart (82 KB) Design Criteria for Central Point Building Department (125 KB) Building. Chevy Impala Honda Civic . Flood design data, if located in flood hazard areas established in Section 1612.3. 2019 Oregon Structural Specialty Code (OSSC) 2019 Oregon Zero Energy Ready Commercial Code (Chapter 13 of the 2019 OSSC) ... Seismic: Design Category is D1. The project requirements which include the seismic design category can be found in Section 1 of the specification and on the first page of the structural drawings. Oregon Seismic Design History . Weathering. Per ORSC Figure 301.2(2), all residential buildings/structures located in the City of Gresham or areas where it has jurisdiction shall be assigned Seismic Design Category D 1 The specifications below are for standard applications. Search form. Institute of Building Sciences. While ASCE 7 allows use of a number of analysis procedures, the equivalent lateral force (ELF) procedure is most commonly used for seismic design of buildings in the U.S. 15lbs per square foot. Source: CISCA zones 3-4 • “Powder-driven shot-in-anchors” (PAF’s), when used for seismic Categories D, E and F, shall have an ICC-ES approval for seismic 4/4/19 Business Oregon ... school projects must design the retrofit to seismic life safety standards unless the project is for a shelter which then must be designed to seismic immediate occupancy standards. Seismic design category and site class. The uniformly distributed, concentrated and impact floor live load used in the design … Modern . potential seismic risk as represented by the Seismic Design Category increases, the Provisions requires progressively more rigorous seismic design and construction as a means of attempting to ensure that all buildings provide an acceptable risk to the public. A. Slope instability. ft. Intermediate Duty Passed With these certified IBC-compliant assemblies, USG is the only manufacturer to offer: Except for Seismic Design Category A, for which Chapter 21 does not apply, the following provisions shall be … 2017 Oregon Residential Specialty Code (ORSC) > 6 Wall Construction > R606 General Masonry Construction > R606.12 Seismic Requirements > R606.12.2 Seismic Design Category C > R606.12.2.2 Design of Elements Not Part of the Lateral Force-Resisting System section 9.610 Design load-bearing values of soils. Business Oregon announced grant awards. The damage categories are taken from the Modified Mercalli Intensity scale, which is based on observed effects on people, objects, and buildings. Although you may hear the terms “seismic zone” and “seismic hazard zone” used interchangeably, they really describe two slightly different things. 6. Establish level of service goals 3. Thus, as the SDC for a structure increases, so do the strength and Manning Design+Construction is a leading Portland, Oregon based green roofing and seismic reinforcement contractor. (Building design and construction professionals use SDCs specified in building codes to determine the level of seismic resistance required for new buildings.) Design for seismic risk mitigation AWWA M41 Chapter 14. Smith Water Products Company AdobeAir, Inc. Amber/Booth Company American Standard, Inc. ITT Industries/Bell & Gossett ITT Industries/Precision Stanless Bryan Steam, LLC Aqua-Chem, Inc. Residential projects falling under the ORSC shall use seismic zone D1. 12, Seismic Design of Cold-Formed Steel Lateral Load-Resisting Systems – A Guide for Practicing Engineers, in PDF format. 12. assigned to Seismic Design Category C, D, E or F. 21.1.1.7 - Structural systems designated as part of the seismic force-resisting system shall be restricted to those permitted by ASCE 7. With the recent global seismic activity, there is a renewed interest in the steps the State of Oregon has taken concerning the seismic design and construction of structures. The design wind speeds (3-second gust) for WA County are: Wind exposure category must be determined by the Engineer of Record based upon site conditions. Seismic design category shall be "D" unless site specific conditions increase design category to "E or F" (reference codes American Society of Civil Engineers ASCE/SEI 7-05). Seismic design category and site class. Design load-bearing values of soils. Seismic. Design load-bearing values of soils. Seismic design category and site class. The seismic design category for a structure is permitted to be determined in accordance with Section 1613 or ASCE 7. All locations within or administered by the City of Portland are classified as Seismic Design Category D in accordance with the procedures of the OSSC. 1603.1.1 Floor Live Load. Establish design standards and methods 6. The uniformly distributed, con-centrated and impact floor live load used in the design shall be indicated for floor areas. • OSSC Section 1613.6 amending ASCE 7, Section 13.5.6.2.2, Item c, “suspended ceilings” in Seismic Design Categories D through F as follows: c. For ceiling areas exceeding 1,000 square feet (13.4 m 2), horizontal Flood design data, if located in flood hazard areas established in Section 1612.3. by the flood plain administrator. Limited Seismic . Vibration Isolation and Seismic Control Manufacturers Association, contact Mr. Robert Ecker, 610-971-4850. Model T Ford Chrysler Model B -70 . The IBC establishes the minimum lateral seismic design forces for which buildings must be designed primarily by reference to ASCE 7. recognized in the seismic design requirements. Handouts. For structures assigned to Seismic Design Category C, D, E or F, a geotechnical investigation shall be conducted, and shall include an evaluation of all of the following potential geologic and seismic hazards: . The damage potential categories are derived from the peak ground velocity map and tsunami inundation maps developed by DOGAMI for the Oregon … Seismic design criteria for residential buildings/structures shall be in determined in accordance with Chapter 3 of the ORSC. Assumed 1500 psf max Without engineered soil bearing analysis. Residential - C for 2017 Oregon Residential Specialty Code. Liquefaction. The uniformly distributed, con-centrated and impact floor live load used in the design shall be indicated for floor areas. , and to interpolate between values in Tables R602.10.3(3), R603.9.2(1) and other seismic design requirements of … ... Conservative contingencies should be built in to all budget categories. We specialize in building and maintaining green roofs (ecoroofs) and other rooftop construction - including rooftop patios, rooftop gardens, rooftop decks and rooftop solar. Appendix 11A. Wind Pressure. Photos provided by: A.O. OSSC section 1609.1.1 is used for wind design. 5. All photos used with permission. for other work covered under these provisions the design standard shall be fema 178, nehrp handbook for the seismic evaluation of existing buildings. • The presentation slides in PDF format, which will be available for download the day before the webinar. Identify service priorities 2. 1603.1.1 Floor live load. seismic design requirements for change of occupancy and structural additions the design standard shall be the current edition of oregon structural specialty code. Surface displacement due to faulting or seismically induced lateral spreading or lateral flow. Ground snow loads at a specific site can be Among the topics addressed are the national seismic hazard maps developed by the U.S. Geological Survey (USGS); the seismic design maps incorporated in the building codes and standard, as well as an overview of the seismic design procedures contained in the building codes. The seismic design category must be specified by a professional engineer or registered architect on the project drawings per ASCE 7. Evaluate project specific seismic hazards 5. NEHRP Recommended Seismic Provisions for New Buildings and Other Structures ft. 1603.1.1 Floor live load. 18" min. The webinar handouts are available for download.These free handouts include the following documents: • NEHRP Seismic Design Technical Brief No. STRUCTURAL DESIGN 348 2014 OREGON STRUCTURAL SPECIALTY CODE 4. The colors in the maps denote “seismic design categories” (SDCs), which reflect the likelihood of experiencing earthquake shaking of various intensities. 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