[pug_ster]

Hello,

I own an 80 year old 6 family, 3 story building. Sometimes I would hear the water pipe vibrating. We noticed that the water pipe vibrating right after when the cold water got shut off (IE turning water off a sink). It would vibrate for about 3-4 seconds and it would stop vibrating. When the cold water vibrating, it would go from the walls upstairs in the apartment to the basement next to the water meter. I had contractors who would come in from time to time but doesn't know what what caused the pipe to vibrate. Thanks.