On April 2, 1994, about 1847 eastern standard time, a Piper PA-28-180, N4298Y was substantially damaged following a forced landing near Winston-Salem, North Carolina. Neither the private pilot nor his passenger were injured in the accident. The aircraft was being operated under 14 CFR Part 91 by the pilot. Visual meteorological conditions existed, and no flight plan had been filed for the personal flight. The flight departed Walnut Grove, North Carolina about 1647. The pilot reported that the engine began to run roughly, and he elected to attempt an emergency landing in a field. The aircraft struck a building prior to coming to rest in the field. Examination of the aircraft revealed that the right fuel tank had one pint of fuel remaining in the tank. The left fuel tank had approximately 10 gallons of fuel remaining. The aircraft fuel tank selector was selected to the right fuel tank. The aircraft fuel line to the carburetor was dry, and the carburetor bowl was empty. The aircraft fuel pump was checked and was working properly. The aircraft fuel gages were checked, and were working properly. A test run of the aircraft engine showed the engine to start easily, and operate normally at various speeds.