Thursday, 3 December 2558 09.00 am. Office building. 15 medium irrigation, have made a solemn declaration to be a good public servant and the power of the earth. On the occasion of the birthday Her Majesty, by Mr. Pichet Puck Piat, Director, Office Building at 15 medium irrigation, presided over the ceremony along with officials. And officials at. Office building 15 medium irrigation.