Page 10 - Green Builder's Resilient Housing Design Guide 2018
P. 10

Quake Readiness: What Homeowners Can Do



            Loose Ends. As this illustration shows,
            a lot of injuries to occupants can be                                .
            easily avoided if homeowners take a                                                          Brace or replace
            few preemptive steps.                  Securely fasten                                       masonry
                                                   or relocate heavy
                                                                                                         chimneys
                                                   pictures and mirrors
                                                   over beds
                             Strap down computers  Strengthen garages
                                              that have living
                                              space above them
                                                                                                         Secure ceiling fans
                                                                                                         and hanging light
                                                                                                         fixtures


            Strap bookcases
            and shelves to
            walls to prevent
            tipping

                                                                                                         Know how and when
                                                                                                         to shut off utilities

            Know how and
            when to shut off
            utilities


                              Brace water heaters
                                                                Secure cabinets
                                                                to wall studs; use
                                   Upgrade unbraced    Ensure that   latches to keep       Strap down televisions
                                   crawlspace walls   gas appliances   cabinet doors from   Prevent rolling   and other expensive
                                   (or other foundation   have flexible   flying open during   or tilting of   or hazardous electrical
                                   problems)        connections  an earthquake  refrigerators  components






                                                                   to turn minor storm damage into a total property loss.
                                                                     The powerful succession of storms and tornadoes in the last decade
                                                                   have led to a lot better understanding of how and why homes “fail”
                                                                   in storm winds.
                                                                     A few years back, I visited the sites of both the La Plata, Maryland,
                                                                   tornado and Hurricane Katrina immediately following those storms,
                                                                   so I got a first-hand look at why things fall apart. In extreme winds,
                                                                   homes typically go to rack and ruin because of either wind uplift
                                                                   or pressure differentials as air enters the home.
                                                                     Oddly enough, homes from the 1920s and ’30s sometimes fare
                                                                   better than ones built in the 1950s. Those old homes were overbuilt,
                                                                   mortared to their foundations, and so on, while homes in the age of
                                                                   Levittown subdivisions were built light, with minimal connection
                                                                   to foundations and no added straps or tie-downs.
                                                                     Lots of recent research offers clear advice on how the homes and
            Siding Test. A burning brand applied to a test wall assembly at UC Davis   multi-family properties of the future can weather severe winds. Here
            set alight the composite wood siding (left side), but the fiber-cement-  are seven rules to live by:
            covered wall did not ignite.                             1. Remove or Reinforce Soffits. Windblown rain entering soffits has


            10  GREEN BUILDER MEDIA Resilient Housing Design Guide                                www.greenbuildermedia.com
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