Tuesday, August 5, 2008

Seismic upgrade cost calculator

For owners/engineers/architects looking to estimate how much it would cost to do an actual seismic renovation or upgrade to an existing building, see this online calculator.

You have a few options to get an answer, but I recommend using the detailed option and form entry. When I go through the exercise using my own building, I get ~$82 per sq. ft. which works out to a total cost of $500k for a complete seismic retrofit. I promise to get around to that as soon as I can...

Note that the choices you make can have large consequences on the overall cost. When I choose a lower the lowest goal of "risk reduction" and limit other anticipated work then the cost drops to half of the original $82/sq.ft.

The methodology is based on a database of retrofit projects. It knows how much those projects ended up costing, so it can compare the variables chosen for your project against the database and come up with an accurate market driven answer. Pretty nifty. Now you can tell your clients that you have a pretty good idea how much the work will cost. Of course, you might want to really investigate the options and help menus before you submit any numbers from it. And don't forget to convert the answer to today's values, because the cost it gives you is in terms of 2002 dollar values.

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