Need any info and or tips on shooting sewers, the sewer is 7' in circumference 40' long and 30' underground. Any advive or tips would be greatly appreciated.

Make sure your hepatitis shot is good

that's the least of my worries.....

what size pump you running?

Many years ago we were involved in a irrigation pond dam.They of course drained the pond and all the rotting fish was sufficating.One of the operators (RIP) found an old gas mask and used it.Concerns? ventalation and the smell.

C50S

It's a brick storm sewer, they are not using it at the moment, but want to put a shotcrete liner, and then start reusing this line.

Like I said,ventilation.Although it may not be in use I would be aware of what methane gas does,a possibility.30' foot down there's no air,make sure you have a escape plan in order.I'm only refering to personal safety,a what if,not to many places to run for cover.

The Company that hired us, is supplying us with breathing equipement, and they will be checking the air at all times. What I really need as this is my first sewer, is info on the best way to shot it. I looked up eveything possible on the net. But did not really tell me what info i needed. 

Point and shute!

DIRTY JOBS

MIKE ROWE did this on a episode in a salt mine I think, try looking at the discovery website for it. I am not a shot- crete guy, but it looked like the same methods used for swimming pools

we have to have a "confined spaces" ticket to work in situations like that, where they go thru all aspects of working in places with restricted access. Make sure you are covered on your method statement and risk assesment.

79 can help you he lurks around here offen he is in Mobile ,AL

I think would lookup guys who shotcrete wine caves! They would probably know the most about close quarters shotcrete methods and materials!

If your pipe is 7' in diameter we can talk but 7' in circumference is less than 3' ID. Wrong application there.

the I.D of pipe is seven feet...

I have never shot overhead with wet process shotcrete before. I use dry process for most of my jobs. First of all you have the safety issue, confined space. Now that it is going to be tough. Paperwork, sniffer and maybe a personal alarm for H2S. Body harness and rope tied to you. Your concrete and air hose, lights and extension cords. All of this crap getting tangled up. You need good lighting to be able to see what you are doing. Forced air (ventilation) blowing by you, now this is turning into a major pain. Now you also have to stay in constant communication with the pump. As far as shooting you have to clean the surface first. Then put what ever kind of reinforcing on. If wet process I would start about 4 or 8 o'clock and shoot to the other if you can walk in the bottom( packing in rebound). If not shoot the bottom first so you can clean up the rebound on the finished area. When you get towards the top you might have to make two or three layers depending on depth. Air pressure and nozzle distance along with the mix will dictate also how deep you can go overhead. Keep the nozzle pointing 90 degrees from the wall. Just remember the rebound will be in every pocket and inside all your clothes. Carry plenty of vinegar to bath in to kill the burn (lime). Now if it were me I would be talking someone into a nice thick 100 mil epoxy coating. In and out easy job. Good luck

Can I call you to get more info from you, I would really appreciated.

My number is 416-710-9930 if you dont want to give out your number, my name is frank.

Thanks again,

By far the best in the business is Kristian...303-567-4871. Everything you need including the hands on. We did this same type of job in Chicago using a small robotic arm. Tell him Ric sent you-

Thanks a million I really appreciate your help...

Frank.

Hey Ric. I remeber that job.