List several steps that can be taken to “retrofit” an older structure to withstand earthquakes
What will be an ideal response?
ANSWER: A successful answer will include at least four of the following (or equivalent correct statements). All statements must be retrofits of existing structures.
- wood frame houses can be firmly attached to their foundations so that they will not be shaken off of them
- small ground floors of multi-story houses can be shored up to provide support
- reinforced concrete pillars can be sheathed in steel to prevent collapse.
- buildings surrounded by windows can be supported with external diagonal bracing
- base isolators can be placed under existing buildings
- glass can be covered with window film or replaced with safety glass
- building codes can specify that repairs to existing buildings use earthquake-safety features
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Fill in the blank(s) with correct word