3 KiB
3 KiB
Foundation Design Notes
Foundation Movement Considerations:
The foundation design parameters do not eliminate post-construction movement. Measures should be taken to improve structural tolerance, including:
- Frequent control joints in masonry, brick, stone, or stucco veneers (maximum 15’-0”)
- Vertically slotted clips to attach roof trusses to non-load-bearing walls
- Other measures as needed to accommodate minor foundation movement
Abnormal Conditions
If construction occurs during extreme dry or wet periods, the contractor must notify both the geotechnical engineer and foundation engineer before beginning work. This may require soil conditioning or foundation redesign.
Foundation Movement
The foundation is designed assuming movement within standard performance limits.
| Performance Limit | Value |
|---|---|
| Deflection Limit | L/260 |
| Tilt Limit | 1% |
Soil Moisture
A reasonably uniform soil moisture level should be maintained around the foundation throughout the life of the structure.
Foundation Maintenance
- Positive drainage away from the structure must be maintained for the life of the building.
- The contractor must inform the owner of this requirement.
- The foundation should be maintained in accordance with the Foundation Performance Association (FPA) document FPA-SC-07, Foundation Maintenance and Inspection Guide for Residential and Low-Rise Buildings, available at www.foundationperformance.org.
- The contractor must provide a copy of this guide to the owner.
Expiration of Plans
- Plans are valid for 6 months from the issue or revision date.
- Contact the engineer for review if construction has not commenced within this time frame or if plans have expired.