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How Design and Construct an Earthquake Resistant House

Quiz Questions

1.Earthquakes result in ground motions, both horizontal and vertical, which can be compared to waves. The motion is generally vibratory and will cause a structure to move rapidly first in one direction and then another.
2. Which one of the following is considered a "Qualified Site" for which guide is applicable?
Stable and solid geologic formations – bedrock
Firm, stable soil deposits
Stable hillside slopes
Engineered land fill placed over stable soils FILL
Sites recommended by a professional soil consultant.
All of the above
3.The Guide has been developed for application to simple, conventional plans with regular and typical architectural features, see Appendix A. The Guide is most useful for dwellings with the following characteristics.

  1. Regular or symmetrical floor plans.
  2. Floor plans with balanced widths of shear wall or bracing in each exterior wall.
  3. Elevations with limited openings.
  4. Roof shapes that are symmetrical with minimal offsets and limited openings.
  5. Conventional wall framing systems. Typically these are wood stud walls, steel stud walls, clay masonry walls and concrete masonry walls.
  6. Chimneys located and anchored as described in the Guide.
4.The following dwelling types and configurations listed below are not included in this Guide. Table No. 1 on page 11 illustrates 5 common examples.

  1. Platform framing on stilt supports.
  2. Post and beam framing with long, uninterrupted expanses of glass.
  3. Overhanging two-story construction where the exterior walls do not continue to the ground.
  4. Staggered floor systems involving more than two levels.
  5. Exterior glass walls without shear panels.
  6. Floors and roofs with extreme overhangs and balconies.
  7. Pole-supported framing.
  8. Attached carports with open sides and corner posts.
  9. Open courtyards with all glass building wall enclosures. 10) Buildings constructed on slopes steeper than 3:1.
5.Landsliding is a particular hazard where poorly compacted fill has been placed on a hillside slope. Landsliding may cause damage in the absence of earthquake shaking and should be of concern even in low seismic risk areas.
6.Table No. 1 shows:
Architectural exclusions for this guide
Architectural inclusions for this guide.
How to build on a hill
Various foundation designs
7.Liquefaction is a phenomenon:
where loose saturated sandy soil loses bearing capacity and becomes like quicksand during earthquake shaking.
Water leak from a failed sewer pipe mixing with the soil underneath the foundation.
Too much water in the concrete mix
8.Figure 22 shows:
A 7.2 Richter scale earthquake
Surface fault displacement
9.In figure 62; Shear walls resist earthquake loads transmitted to them by floor and roof diaphragms. A shear wall is required along each side of the perimeter of the floor or roof (horizontal) diaphragm, usually in each exterior elevation. The most effective locations for the exterior shear walls are at the corners of the building where the walls are mutually perpendicular to each other and have a common point of intersection.
10.The home builder check list on page 77 is provided for the home builder to use to determine whether important recommendations for seismic resistant design have been considered when constructing a residence. The builder should refer to the Guide for information on each of the items listed. This list should not be considered as being all inclusive.
11.The appendix on page 80 shows:
A typical floor plan for an earthquake resistant house
A floor plan for an storm resistant house
A floor plan for house in the flood zone.