NEHRP Clearinghouse
- Title
- Recommended Performance-Based Criteria for the Design of Manufactured Home Foundation Systems to Resist Wind and Seismic Loads.
- File
- PB96128285.pdf
- Author(s)
- Marshall, R. D.; Yokel, F. Y.
- Source
- Department of Housing and Urban Development, Washington, DC. Office of Research Evaluation and Monitoring., August 1995, 86 p.
- Identifying Number(s)
- NISTIR-5664
- Abstract
- This report addresses the issue of tornado wind speeds as a basis for the design of manufactured homes and compares base shears due to earthquake excitation with base shears due to wind loading for various seismic and wind zones. In view of the accepted probabilities of attaining or exceeding design limit states for ordinary buildings, it is concluded that tornadoes should not be a part of the wind load design criteria for manufactured homes. Also, it is concluded that base shears due to wind loading will always govern the design of anchor and tiedown systems in the direction normal to the axis for a manufactured home, regardless of seismic zone. There are several alternative systems on the market or under development that show considerable promise for providing the required resistance to wind and earthquake loads. Finally, a set of performance-based criteria for anchoring manufactured homes against wind and earthquake loads is proposed.
- Keywords
- Structural vibrations; Wind effects; Soils; Prefabricated buildings; Hurricanes; Wind loads; Anchors (Structural); Wind engineering; Dynamic structural analysis; Earthquake engineering; Foundations (Structures); Performance evaluation; Soil structure interactions; Seismic effects; Design criteria; Building codes