Nature of Ground Motion and Its Effect on Buildings

Notes:
Earthquake forces are "attracted" to the stiff elements in a building. Drift, or "Delta" is the measure of stiffness. This diagram shows that, by using the formula for deflection, a column that is half the length of another of the same cross section will be approximately eight times as stiff and will attract a corresponding share of the earthquake forces. If this phenomenon is not undestood the column may be seriously under-designed. Digitized from a set of 35 mm slides from AIA/ACSA Council on Architectural Research; showing details effect of earthquake on building structures. Illustration by Chris Arnold.
Topics:
Architecture -- United States -- 20th century -- (YVRC)
Culture:
American
Accession Number:
3734-020
Genre:
diagrams (AAT)
Format:
Image
Content Type:
Paintings & Drawings
Rights:
The use of this image may be subject to the copyright law of the United States (Title 17, United States Code) or to site license or other rights management terms and conditions. The person using the image is liable for any infringement.
Access Restrictions:
Yale Community Only
Source Note:
Buildings at Risk: Seismic Design Basics for Practicing Architects, Washington, DC., 1994
Yale Collection:
Visual Resources Collection
Digital Collection:
Visual Resources Collection
Local Record Number:
Portfolio Item ID: 331469
OID:
10004492
PID:
digcoll:1787401