In Taipei I went to see a contracting engineering firm for data on prestressed concrete. The name is King Shiu which is run by graduates of St. John's and National Chiao Tung University. They built a number of bridges and stadiums with this method and is tested for a year since they imported the set of equipment from W. Germany. So in the building the gym. and library, this method will give us more speed and savings. They told me that it is possible to cast 6 roof bents in one mold on top of each other although they have never done or heard of it before. They have 2 thirty-ton cranes which would be sufficient to erect them. After the tie beams are casted on the bents, precasted purlin beams can be hoisted up and joined in place.