I have a job coming up that will require hanging 160ft of 4" pvc under a slab floor. My question is does anyone (maybe hilti or ect.)make an anchor for a powder activated gun that will shoot an attachment point for 3/8" allthread.All of my experience has been in small town usa. so I dont see some of the things out there that are available.Also, what kind of luck have yall had with these types of mounting.I am going to be in a wet enviroment so hammerdrilling really isnt an option.Any thoughts men??