In my shop I ran 6" PVC vacuum lines directly across the shop beneath the middle of the slab. They are placed in trenches filled with drain rock. The trench is lined with a permeable membrane to...
Type: Posts; User: Glenn Kramer; Keyword(s):
In my shop I ran 6" PVC vacuum lines directly across the shop beneath the middle of the slab. They are placed in trenches filled with drain rock. The trench is lined with a permeable membrane to...