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Tuesday, July 21, 2020 | History

4 edition of Seismic retrofitting alternatives for San Francisco"s unreinforced masonry buildings found in the catalog.

Seismic retrofitting alternatives for San Francisco"s unreinforced masonry buildings

Recht Hausrath & Associates.

Seismic retrofitting alternatives for San Francisco"s unreinforced masonry buildings

socioeconomic and land use implications of alternative requirements

by Recht Hausrath & Associates.

  • 126 Want to read
  • 9 Currently reading

Published by The Associates in Oakland, Calif .
Written in English

    Subjects:
  • Buildings -- Earthquake effects -- California -- San Francisco,
  • Buildings -- California -- San Francisco -- Repair and reconstruction,
  • Masonry -- California -- San Francisco,
  • Land use -- California -- San Francisco -- Planning

  • Edition Notes

    Statementprepared for San Francisco Department of City Planning ; prepared by Recht Hausrath & Associates.
    ContributionsSan Francisco (Calif.). Dept. of City Planning.
    The Physical Object
    Pagination1 v. (various pagings) : :
    ID Numbers
    Open LibraryOL22945410M
    OCLC/WorldCa24763695

    Portland has a “seismic retrofit program,” as do other jurisdictions on the West Coast, including Seattle (Project Impact), the Association of Bay Area Governments (Plan Set A), and Los Angeles (Earthquake Brace and Bolt) which relies on “prescriptive path,” or rule-of . The consultant would identify non-ductile concrete buildings and steel moment frame buildings. This work would complement staff’s on-going efforts to identify other types of buildings requiring retrofit, such as unreinforced masonry buildings, concrete wall tilt-up buildings, and soft-story structures.

    Seismic Retrofitting The seismic retrofitting process uses anchors and hardware to improve the stability and performance of a building in a seismic event. The process strengthens the walls and foundation so the shaking and tremors of an earthquake do not cause . Seismic Retrofitting in Los Angeles. We provide seismic retrofitting on soft story buildings and single-family homes from inspection to completion, in order to help you comply with the Los Angeles Department of Building and Safety (LADBS) Ordinance and Ordinance

    The IBC Structural/Seismic Design Manual was developed to fill a void that exists between the commentary of SEAOC's Blue Book, which explained the basis for the code provisions, and everyday structural engineering design practice. The JBC Structural/ Seismic Design Manual illustrates how the provisions of the code are used. Volume 1.   Government Required Seismic Retrofit Programs - What You Need to Know as a Lender. Los Angeles is requiring tens of thousands of buildings to undergo earthquake retrofitting. Portland may be following suit shortly requiring all unreinforced masonry .


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Seismic retrofitting alternatives for San Francisco"s unreinforced masonry buildings by Recht Hausrath & Associates. Download PDF EPUB FB2

Commercial Retrofitting Services. SNW provides a variety of services for seismic retrofitting, depending on your business’s unique needs.

Our services include apartment complexes, businesses, and office buildings. These commercial dwellings can fail earthquakes because of tilt-up construction, unreinforced masonry, or a soft story. Residential seismic retrofitting is unregulated and only requires a rudimentary sketch for a county or city building inspector to sign off on the work that can costs thousands.

The Principles and Practice of Effective Seismic Retrofitting This is a very rough draft of a book on retrofitting being written by Howard Cook in collaboration with structural engineers who are members of the Structural Engineer’s Association of Northern California.

approved administratively. Seismic retrofitting of UMBs is guided by the Architectural Design Guidelines for the Exterior Treatment of Unreinforced Masonry Buildings During Seismic Retrofit, developed by the American Institute of Architects.

To obtain a copy of the guidelines, contact the Planning Information Center (PIC) at () How can we help. Initial R&D utilizing STF in spray-on “Eco-friendly Ductile Cementitious Composites” or EDCC. With nearly times greater strain capacity, these materials are ideal for seismic strengthening of millions of masonry buildings around the world and for applications requiring extreme structural ductility.

It also uses polymer-based fibers and other industrial additives, which. Seismic Retrofit Incentive Programs: A Handbook for Local Governments This handbook assists local government officials in developing seismic retrofit incentive programs.

The handbook summarizes several case studies that describe the steps that seven California cities have taken to promote and implement retrofitting in their communities. In California, there are also other types of mandatory seismic ordinances that apply to structure types such as unreinforced masonry (URM) buildings.

The California URM Law was passed in and required local governments in high seismic zones to develop an inventory for URM buildings and establish a loss-reduction program.

SNW provides a variety of services for seismic retrofitting, depending on your business’s unique needs. Our services include apartment complexes, businesses, and office buildings. These commercial dwellings can fail earthquakes because of tilt-up construction, unreinforced masonry, or a soft story.

The team at Optimum Seismic has been providing consultations, engineering, construction and earthquake retrofits for commercial buildings in California since Our experts in seismic engineering, construction management provide quality earthquake retrofit services for.

A retrofitting to these types of concrete buildings involves the installation of combined modes such as concrete shear walls, caissons, steel columns and other types of strengthening systems.

The goal with each method is to strengthen junctions of the structure, which provides increased strength and resilience.

The team at Optimum Seismic has been providing construction and retrofit services in California since We have retrofit hundreds of Unreinforced Masonry Buildings, over 2, soft-story apartment buildings as well as manufacturing facilities and office buildings.

Our. Our specialized capabilities include: • Soft Story Seismic Upgrades • Underground structures • New foundations • Concrete restoration and strengthening At SteelCore Builders, our crew and management have set the standard for structural concrete and structural strengthening throughout the San Francisco Bay Area since Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to better understanding of seismic demand on structures and with our recent experiences with large earthquakes near urban centers, the need of seismic retrofitting is well acknowledged.

Prior to the introduction of modern seismic. Of San Mateo's 12 unreinforced masonry buildings (URMs), 1 has been retrofitted, 3 are presently undergoing retrofit construction, and engineering plans have been prepared for the remaining structures. CONTACTS Fred Cullum Chief Building Offier () Bob Muehlbauer Housing and Economic Development () Adding to Amy's excellent answer above - the standard that California strives for in seismic standards is life safety, meaning that in the largest expected earthquake (aka The Big One), the lives of the occupants should have the greatest chance of.

Seismic Retrofitting Basics. The horizontal (lateral) shaking in earthquakes create the forces that can be damaging to our wood framed homes.

Homes tend to fail in one of three ways - all between the foundation and the first floor joists. First, the sill plate can slide off of the foundation. Second, the cripple wall (or pony wall) can fail. Why is Earthquake retrofitting important. Recent earthquakes have shown that if a building has weak cripple wall bracing or is unbolted,it may slide off its foundation even in certain moderate earthquake retrofitting experts have seen buildings whose Cripple stud walls have toppled over,and the buildings have collapsed and buildings may catch fire or need extensive.

Guidelines for the Seismic Retrofitting of Historic Adobe Structures Tolles Edna E. Kimbro William G C I S c i e n t i f i c P r o g r a m R e p o r t s CALIB FILM PROOF CYAN MAGENTA YELLOW BLACK DATE BOOK COVER-JAN NORTHRIDGE QUAKE PROOF # TRIM SIZE BLEED SIZE MSTR# 0 R G B 50K 50C 41M 41Y.

The Earthquake Retrofit exclusion mainly includes construction of seismic retrofitting improvements or other improvements that utilize earthquake hazard mitigation technologies on an existing building. Construction of entirely new buildings would also not qualify for this exclusion.

Priority 1: Unreinforced Masonry Buildings and Concrete Tilt-Up Buildings Priority 2: Soft-Story Buildings with 3 or more stories Priority 3: Soft-Story Buildings with 16 or more units Priority 4: Non-Ductile Concrete Buildings and Steel Moment Frame Buildings Priority 5: Soft-Story Buildings with 7 to 15 units.

The Basics of Cripple Wall Retrofits. The most common seismic retrofits are cripple wall retrofits. Unlike most other home improvement projects, they should be designed using the engineering calculations behind Standard Plan A Therefore, I suggest you watch this video on designing a retrofit In the event you have less than 3 steps leading into the house, you probably need a no cripple wall.Typical types of older buildings that benefit from a seismic retrofit include the following: Concrete tilt-ups; Soft-Story Structures, such as those with tuck under parking or large store fronts at the 1st floor; Unreinforced masonry buildings (URM) Non-Ductile concrete buildings.

Seismic retrofitting technologies Excerpt from NOVA's Making Stuff Safer. #making-stuff-safer Copyrig.