SEISMIC SAFETY
Bad Examples
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HERE ARE SOME EXAMPLES OF JOBS THAT HAVE BEEN DONE INCORRECTLY
SOUTH PASADENA:
EAGLE ROCK:
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This photo highlights the absence of connectors which would be required in the transfer of earthquake loads to the anchored sill. Interesting that this contractor postures himself and his wife as a community minded team dedicated to safety for senior citizens, schools, churches, zoos, and animal shelters. He further boasts that unlike other contractors he oversees all of his work. These photos are the documented results of his personal touch. |
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Contractor properly installed plywood, vents, nails, and blocking for this cripple wall. Any investigator should ask why does contractor omit required joist blocking and framing anchors above the plywood? |
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Why would this contractor brace the wall in the photo above and then leave these walls unprotected? Could it be that the work space in this area of the home was difficult? Who would suspect that the good contractor would leave this work out just because it is hidden from easy viewing? |
GLENDALE:
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These lag bolts were hurriedly screwed in without the benefit of a predrilled pilot hole. This "time-saving" method split the sill plate rendering the bolts useless. |
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These bolts were placed in hole that was too big for the bolt. This method made it quick to just drop the bolts in the hole. Who would be the wiser if they didn’t put a wrench to each bolt. We were able to lift these bolts out easily with our finger tips. |
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This quick installation
of slapping up a piece of plywood offers little resistance to lateral forces. 1. The nails don’t cinch the plywood to the nailing surface. 2. There is no required blocking. 3. In a strong seismic event these nails would simply bend over and allow the cripple wall to collapse. |
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Here is another example of bolts being placed in a large hole. The bolts do not serve their design function. Again we were able to remove these bolts from the foundation with our bare fingers. This installation offers no resistance to an earthquake. |
1-800-300-BOLT (2658)
or (626) 791-2300-mail us
Seismic Safety - Ed Sylvis Construction
1410 North Lake Avenue
Pasadena, California 91104