Thai Hotel Association: Seismic Risk Komsarn, Elizabeth and I arrived at the office of PRE-BUILT in the humid Bangkok afternoon. PRE-BUILT is one of the premier developers slush contractors in Bangkok. They have built dozens of high rise condominium and office buildings in this expanding South East Asian city of 8 million people. Viroj, a principal of PRE-BUILT met us with his engineers and architects in the air conditioned office. We were ready to talk about how we could make it better.