> 229 If a builder builds a house for someone, and does not construct it properly, and the house which he built falls and kills its owner, then that builder shall be put to death.

http://faculty.collin.edu/mbailey/hammurabi%27s%20laws.htm

Thus the builders guild began to charge 50 silver for insurrance yearly from its members, which resulted to all road projects having a yearly 100 silver talent cost-addition on start. 5 years after the code, the empire went bankrupt