Edit point

In order to edit an existing point, you must type in the original poster's email address.

Original poster's email address:		required
Original poster's Name:
	Publicly display my name on site.         (check this & save to edit name)
Photo:		optional (MAX file size 3MB)
Lat:		required
Long:		required
Building Type	- Choose - Residential Commercial Institutional Hospital, Police, Fire Station Bridge or Transit Structure Other, Mixed, or Don't Know	required
Title:	The title can be the building name, an address, or any other short descriptor, such as "Third Street Office Building," "Hayward church," or "My Oakland condo."	required
Description:	The original structural system of Hildebrand Hall, originally built in 1966, consisted of pre-stressed nonductile concrete floor slab and columns without any adequate earthquake resisting elements. A 1997 engineering study also showed that the interior columns as well as the library mezzanine could collapse and the building’s precast wall panels’ connections could fail during an earthquake. To strengthen the seismic performance of the building, a new lateral resisting system was added to the building. This new system consists of unbonded braces (also called buckling restrained braces) in the north and south ends of the building and new concrete shear walls on the east and west ends of the building. The unbonded braces are made from a steel brace element encased by concrete so they are strong in both compression and tension during lateral motion. For the Hildebrand Hall retrofit, the unbonded braces are arranged in concentric pairs and are located on the exterior of the building. To prevent the failures predicted in the 1997 analysis, strengthening was also completed for the walls around the stair, columns-to-slab connections, and the precast panel hangers. This University of California Berkeley building was retrofitted as a part of the SAFER Program (Seismic Action for Facilities Enhancement & Renewal) which systematically reviewed, prioritized, and constructed building retrofits for all UC Berkeley owned and operated buildings. Retrofit Engineer: Forell/Elsesser Engineers Retrofit Architect: Anshen and Allen This is optional, but we hope you'll share what's significant or interesting to you about this retrofit. What prompted the retrofit project? Was it part of a larger project or program? What was the retrofit objective? Feel free to give engineering or cost details. What's your relationship to the project? You may add your company's name or a link to another site with more project details, as long as your Description is not soliciting business.	optional
Original Structure Type	- Choose - Wood Unreinforced Brick Reinforced Masonry Concrete Steel Other Don't Know	optional
Retrofit System Type	- Choose - Wood Reinforced Masonry Concrete Steel Isolation Hybrid or Other Don't Know	optional
Year of Retrofit:	- Year - Don't know pre-Loma Prieta 1989, post-Loma Prieta 199019911992199319941995199619971998199920002001200220032004200520062007200820092010	optional
Verification:	Enter in the letters and/or numbers you see in the image.	required
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